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</pre><pre class='rust '>
<span class='comment'>// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT</span>
<span class='comment'>// file at the top-level directory of this distribution and at</span>
<span class='comment'>// http://rust-lang.org/COPYRIGHT.</span>
<span class='comment'>//</span>
<span class='comment'>// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class='comment'>// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class='comment'>// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
<span class='comment'>// option. This file may not be copied, modified, or distributed</span>
<span class='comment'>// except according to those terms.</span>
<span class='comment'>// Rust JSON serialization library</span>
<span class='comment'>// Copyright (c) 2011 Google Inc.</span>
<span class='doccomment'>//! JSON parsing and serialization</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! # What is JSON?</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! JSON (JavaScript Object Notation) is a way to write data in Javascript.</span>
<span class='doccomment'>//! Like XML, it allows encoding structured data in a text format that can be</span>
<span class='doccomment'>//! easily read by humans. Its simple syntax and native compatibility with</span>
<span class='doccomment'>//! JavaScript have made it a widely used format.</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! Data types that can be encoded are JavaScript types (see the `Json` enum</span>
<span class='doccomment'>//! for more details):</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! * `I64`: equivalent to rust's `i64`</span>
<span class='doccomment'>//! * `U64`: equivalent to rust's `u64`</span>
<span class='doccomment'>//! * `F64`: equivalent to rust's `f64`</span>
<span class='doccomment'>//! * `Boolean`: equivalent to rust's `bool`</span>
<span class='doccomment'>//! * `String`: equivalent to rust's `String`</span>
<span class='doccomment'>//! * `Array`: equivalent to rust's `Vec<T>`, but also allowing objects of</span>
<span class='doccomment'>//! different types in the</span>
<span class='doccomment'>//! same array</span>
<span class='doccomment'>//! * `Object`: equivalent to rust's `BTreeMap<String, json::Json>`</span>
<span class='doccomment'>//! * `Null`</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! An object is a series of string keys mapping to values, in `"key": value`</span>
<span class='doccomment'>//! format. Arrays are enclosed in square brackets ([ ... ]) and objects in</span>
<span class='doccomment'>//! curly brackets ({ ... }). A simple JSON document encoding a person,</span>
<span class='doccomment'>//! their age, address and phone numbers could look like</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! ```ignore</span>
<span class='doccomment'>//! {</span>
<span class='doccomment'>//! "FirstName": "John",</span>
<span class='doccomment'>//! "LastName": "Doe",</span>
<span class='doccomment'>//! "Age": 43,</span>
<span class='doccomment'>//! "Address": {</span>
<span class='doccomment'>//! "Street": "Downing Street 10",</span>
<span class='doccomment'>//! "City": "London",</span>
<span class='doccomment'>//! "Country": "Great Britain"</span>
<span class='doccomment'>//! },</span>
<span class='doccomment'>//! "PhoneNumbers": [</span>
<span class='doccomment'>//! "+44 1234567",</span>
<span class='doccomment'>//! "+44 2345678"</span>
<span class='doccomment'>//! ]</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//! ```</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! # Rust Type-based Encoding and Decoding</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! Rust provides a mechanism for low boilerplate encoding & decoding of values</span>
<span class='doccomment'>//! to and from JSON via the serialization API. To be able to encode a piece</span>
<span class='doccomment'>//! of data, it must implement the `rustc_serialize::Encodable` trait. To be</span>
<span class='doccomment'>//! able to decode a piece of data, it must implement the</span>
<span class='doccomment'>//! `rustc_serialize::Decodable` trait. The Rust compiler provides an</span>
<span class='doccomment'>//! annotation to automatically generate the code for these traits:</span>
<span class='doccomment'>//! `#[derive(RustcDecodable, RustcEncodable)]`</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! The JSON API provides an enum `json::Json` and a trait `ToJson` to encode</span>
<span class='doccomment'>//! objects. The `ToJson` trait provides a `to_json` method to convert an</span>
<span class='doccomment'>//! object into a `json::Json` value. A `json::Json` value can be encoded as a</span>
<span class='doccomment'>//! string or buffer using the functions described above. You can also use the</span>
<span class='doccomment'>//! `json::Encoder` object, which implements the `Encoder` trait.</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! When using `ToJson`, the `Encodable` trait implementation is not</span>
<span class='doccomment'>//! mandatory.</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! # Examples of use</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! ## Using Autoserialization</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! Create a struct called `TestStruct` and serialize and deserialize it to and</span>
<span class='doccomment'>//! from JSON using the serialization API, using the derived serialization code.</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! ```rust</span>
<span class='doccomment'>//! extern crate rustc_serialize;</span>
<span class='doccomment'>//! use rustc_serialize::json;</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! // Automatically generate `RustcDecodable` and `RustcEncodable` trait</span>
<span class='doccomment'>//! // implementations</span>
<span class='doccomment'>//! #[derive(RustcDecodable, RustcEncodable)]</span>
<span class='doccomment'>//! pub struct TestStruct {</span>
<span class='doccomment'>//! data_int: u8,</span>
<span class='doccomment'>//! data_str: String,</span>
<span class='doccomment'>//! data_vector: Vec<u8>,</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! fn main() {</span>
<span class='doccomment'>//! let object = TestStruct {</span>
<span class='doccomment'>//! data_int: 1,</span>
<span class='doccomment'>//! data_str: "homura".to_string(),</span>
<span class='doccomment'>//! data_vector: vec![2,3,4,5],</span>
<span class='doccomment'>//! };</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! // Serialize using `json::encode`</span>
<span class='doccomment'>//! let encoded = json::encode(&object).unwrap();</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! // Deserialize using `json::decode`</span>
<span class='doccomment'>//! let decoded: TestStruct = json::decode(&encoded).unwrap();</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//! ```</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! ## Using the `ToJson` trait</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! The examples below use the `ToJson` trait to generate the JSON string,</span>
<span class='doccomment'>//! which is required for custom mappings.</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! ### Simple example of `ToJson` usage</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! ```rust</span>
<span class='doccomment'>//! extern crate rustc_serialize;</span>
<span class='doccomment'>//! use rustc_serialize::json::{self, ToJson, Json};</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! // A custom data structure</span>
<span class='doccomment'>//! struct ComplexNum {</span>
<span class='doccomment'>//! a: f64,</span>
<span class='doccomment'>//! b: f64,</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! // JSON value representation</span>
<span class='doccomment'>//! impl ToJson for ComplexNum {</span>
<span class='doccomment'>//! fn to_json(&self) -> Json {</span>
<span class='doccomment'>//! Json::String(format!("{}+{}i", self.a, self.b))</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! // Only generate `RustcEncodable` trait implementation</span>
<span class='doccomment'>//! #[derive(RustcEncodable)]</span>
<span class='doccomment'>//! pub struct ComplexNumRecord {</span>
<span class='doccomment'>//! uid: u8,</span>
<span class='doccomment'>//! dsc: String,</span>
<span class='doccomment'>//! val: Json,</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! fn main() {</span>
<span class='doccomment'>//! let num = ComplexNum { a: 0.0001, b: 12.539 };</span>
<span class='doccomment'>//! let data: String = json::encode(&ComplexNumRecord{</span>
<span class='doccomment'>//! uid: 1,</span>
<span class='doccomment'>//! dsc: "test".to_string(),</span>
<span class='doccomment'>//! val: num.to_json(),</span>
<span class='doccomment'>//! }).unwrap();</span>
<span class='doccomment'>//! println!("data: {}", data);</span>
<span class='doccomment'>//! // data: {"uid":1,"dsc":"test","val":"0.0001+12.539i"};</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//! ```</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! ### Verbose example of `ToJson` usage</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! ```rust</span>
<span class='doccomment'>//! extern crate rustc_serialize;</span>
<span class='doccomment'>//! use std::collections::BTreeMap;</span>
<span class='doccomment'>//! use rustc_serialize::json::{self, Json, ToJson};</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! // Only generate `Decodable` trait implementation</span>
<span class='doccomment'>//! #[derive(RustcDecodable)]</span>
<span class='doccomment'>//! pub struct TestStruct {</span>
<span class='doccomment'>//! data_int: u8,</span>
<span class='doccomment'>//! data_str: String,</span>
<span class='doccomment'>//! data_vector: Vec<u8>,</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! // Specify encoding method manually</span>
<span class='doccomment'>//! impl ToJson for TestStruct {</span>
<span class='doccomment'>//! fn to_json(&self) -> Json {</span>
<span class='doccomment'>//! let mut d = BTreeMap::new();</span>
<span class='doccomment'>//! // All standard types implement `to_json()`, so use it</span>
<span class='doccomment'>//! d.insert("data_int".to_string(), self.data_int.to_json());</span>
<span class='doccomment'>//! d.insert("data_str".to_string(), self.data_str.to_json());</span>
<span class='doccomment'>//! d.insert("data_vector".to_string(), self.data_vector.to_json());</span>
<span class='doccomment'>//! Json::Object(d)</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! fn main() {</span>
<span class='doccomment'>//! // Serialize using `ToJson`</span>
<span class='doccomment'>//! let input_data = TestStruct {</span>
<span class='doccomment'>//! data_int: 1,</span>
<span class='doccomment'>//! data_str: "madoka".to_string(),</span>
<span class='doccomment'>//! data_vector: vec![2,3,4,5],</span>
<span class='doccomment'>//! };</span>
<span class='doccomment'>//! let json_obj: Json = input_data.to_json();</span>
<span class='doccomment'>//! let json_str: String = json_obj.to_string();</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! // Deserialize like before</span>
<span class='doccomment'>//! let decoded: TestStruct = json::decode(&json_str).unwrap();</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//! ```</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! ## Parsing a `str` to `Json` and reading the result</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! ```rust</span>
<span class='doccomment'>//! extern crate rustc_serialize;</span>
<span class='doccomment'>//! use rustc_serialize::json::Json;</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! fn main() {</span>
<span class='doccomment'>//! let data = Json::from_str("{\"foo\": 13, \"bar\": \"baz\"}").unwrap();</span>
<span class='doccomment'>//! println!("data: {}", data);</span>
<span class='doccomment'>//! // data: {"bar":"baz","foo":13}</span>
<span class='doccomment'>//! println!("object? {}", data.is_object());</span>
<span class='doccomment'>//! // object? true</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! let obj = data.as_object().unwrap();</span>
<span class='doccomment'>//! let foo = obj.get("foo").unwrap();</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! println!("array? {:?}", foo.as_array());</span>
<span class='doccomment'>//! // array? None</span>
<span class='doccomment'>//! println!("u64? {:?}", foo.as_u64());</span>
<span class='doccomment'>//! // u64? Some(13u64)</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! for (key, value) in obj.iter() {</span>
<span class='doccomment'>//! println!("{}: {}", key, match *value {</span>
<span class='doccomment'>//! Json::U64(v) => format!("{} (u64)", v),</span>
<span class='doccomment'>//! Json::String(ref v) => format!("{} (string)", v),</span>
<span class='doccomment'>//! _ => format!("other")</span>
<span class='doccomment'>//! });</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//! // bar: baz (string)</span>
<span class='doccomment'>//! // foo: 13 (u64)</span>
<span class='doccomment'>//! }</span>
<span class='doccomment'>//! ```</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! # The status of this library</span>
<span class='doccomment'>//!</span>
<span class='doccomment'>//! While this library is the standard way of working with JSON in Rust,</span>
<span class='doccomment'>//! there is a next-generation library called Serde that's in the works (it's</span>
<span class='doccomment'>//! faster, overcomes some design limitations of rustc-serialize and has more</span>
<span class='doccomment'>//! features). You might consider using it when starting a new project or</span>
<span class='doccomment'>//! evaluating Rust JSON performance.</span>
<span class='kw'>use</span> <span class='self'>self</span>::<span class='ident'>JsonEvent</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='self'>self</span>::<span class='ident'>ErrorCode</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='self'>self</span>::<span class='ident'>ParserError</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='self'>self</span>::<span class='ident'>DecoderError</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='self'>self</span>::<span class='ident'>ParserState</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='self'>self</span>::<span class='ident'>InternalStackElement</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::{<span class='ident'>HashMap</span>, <span class='ident'>BTreeMap</span>};
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>error</span>::<span class='ident'>Error</span> <span class='kw'>as</span> <span class='ident'>StdError</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>i64</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>io</span>::<span class='ident'>prelude</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>mem</span>::<span class='ident'>swap</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>ops</span>::<span class='ident'>Index</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>str</span>::<span class='ident'>FromStr</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>string</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::{<span class='ident'>char</span>, <span class='ident'>f64</span>, <span class='ident'>fmt</span>, <span class='ident'>io</span>, <span class='ident'>str</span>};
<span class='kw'>use</span> <span class='ident'>Encodable</span>;
<span class='doccomment'>/// Represents a json value</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Clone</span>, <span class='ident'>PartialEq</span>, <span class='ident'>PartialOrd</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='ident'>Json</span> {
<span class='ident'>I64</span>(<span class='ident'>i64</span>),
<span class='ident'>U64</span>(<span class='ident'>u64</span>),
<span class='ident'>F64</span>(<span class='ident'>f64</span>),
<span class='ident'>String</span>(<span class='ident'>string</span>::<span class='ident'>String</span>),
<span class='ident'>Boolean</span>(<span class='ident'>bool</span>),
<span class='ident'>Array</span>(<span class='self'>self</span>::<span class='ident'>Array</span>),
<span class='ident'>Object</span>(<span class='self'>self</span>::<span class='ident'>Object</span>),
<span class='ident'>Null</span>,
}
<span class='kw'>pub</span> <span class='kw'>type</span> <span class='ident'>Array</span> <span class='op'>=</span> <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>Json</span><span class='op'>></span>;
<span class='kw'>pub</span> <span class='kw'>type</span> <span class='ident'>Object</span> <span class='op'>=</span> <span class='ident'>BTreeMap</span><span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span>, <span class='ident'>Json</span><span class='op'>></span>;
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>PrettyJson</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> { <span class='ident'>inner</span>: <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>Json</span> }
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>AsJson</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span>: <span class='lifetime'>'a</span><span class='op'>></span> { <span class='ident'>inner</span>: <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>T</span> }
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>AsPrettyJson</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span>: <span class='lifetime'>'a</span><span class='op'>></span> { <span class='ident'>inner</span>: <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>T</span>, <span class='ident'>indent</span>: <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>u32</span><span class='op'>></span> }
<span class='doccomment'>/// The errors that can arise while parsing a JSON stream.</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Clone</span>, <span class='ident'>Copy</span>, <span class='ident'>PartialEq</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='ident'>ErrorCode</span> {
<span class='ident'>InvalidSyntax</span>,
<span class='ident'>InvalidNumber</span>,
<span class='ident'>EOFWhileParsingObject</span>,
<span class='ident'>EOFWhileParsingArray</span>,
<span class='ident'>EOFWhileParsingValue</span>,
<span class='ident'>EOFWhileParsingString</span>,
<span class='ident'>KeyMustBeAString</span>,
<span class='ident'>ExpectedColon</span>,
<span class='ident'>TrailingCharacters</span>,
<span class='ident'>TrailingComma</span>,
<span class='ident'>InvalidEscape</span>,
<span class='ident'>InvalidUnicodeCodePoint</span>,
<span class='ident'>LoneLeadingSurrogateInHexEscape</span>,
<span class='ident'>UnexpectedEndOfHexEscape</span>,
<span class='ident'>UnrecognizedHex</span>,
<span class='ident'>NotFourDigit</span>,
<span class='ident'>ControlCharacterInString</span>,
<span class='ident'>NotUtf8</span>,
}
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Debug</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='ident'>ParserError</span> {
<span class='doccomment'>/// msg, line, col</span>
<span class='ident'>SyntaxError</span>(<span class='ident'>ErrorCode</span>, <span class='ident'>usize</span>, <span class='ident'>usize</span>),
<span class='ident'>IoError</span>(<span class='ident'>io</span>::<span class='ident'>Error</span>),
}
<span class='kw'>impl</span> <span class='ident'>PartialEq</span> <span class='kw'>for</span> <span class='ident'>ParserError</span> {
<span class='kw'>fn</span> <span class='ident'>eq</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='ident'>ParserError</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>match</span> (<span class='self'>self</span>, <span class='ident'>other</span>) {
(<span class='kw-2'>&</span><span class='ident'>SyntaxError</span>(<span class='ident'>msg0</span>, <span class='ident'>line0</span>, <span class='ident'>col0</span>), <span class='kw-2'>&</span><span class='ident'>SyntaxError</span>(<span class='ident'>msg1</span>, <span class='ident'>line1</span>, <span class='ident'>col1</span>)) <span class='op'>=></span>
<span class='ident'>msg0</span> <span class='op'>==</span> <span class='ident'>msg1</span> <span class='op'>&&</span> <span class='ident'>line0</span> <span class='op'>==</span> <span class='ident'>line1</span> <span class='op'>&&</span> <span class='ident'>col0</span> <span class='op'>==</span> <span class='ident'>col1</span>,
(<span class='kw-2'>&</span><span class='ident'>IoError</span>(_), _) <span class='op'>=></span> <span class='bool-val'>false</span>,
(_, <span class='kw-2'>&</span><span class='ident'>IoError</span>(_)) <span class='op'>=></span> <span class='bool-val'>false</span>,
}
}
}
<span class='comment'>// Builder and Parser have the same errors.</span>
<span class='kw'>pub</span> <span class='kw'>type</span> <span class='ident'>BuilderError</span> <span class='op'>=</span> <span class='ident'>ParserError</span>;
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>PartialEq</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='ident'>DecoderError</span> {
<span class='ident'>ParseError</span>(<span class='ident'>ParserError</span>),
<span class='ident'>ExpectedError</span>(<span class='ident'>string</span>::<span class='ident'>String</span>, <span class='ident'>string</span>::<span class='ident'>String</span>),
<span class='ident'>MissingFieldError</span>(<span class='ident'>string</span>::<span class='ident'>String</span>),
<span class='ident'>UnknownVariantError</span>(<span class='ident'>string</span>::<span class='ident'>String</span>),
<span class='ident'>ApplicationError</span>(<span class='ident'>string</span>::<span class='ident'>String</span>),
<span class='ident'>EOF</span>,
}
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Copy</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='ident'>EncoderError</span> {
<span class='ident'>FmtError</span>(<span class='ident'>fmt</span>::<span class='ident'>Error</span>),
<span class='ident'>BadHashmapKey</span>,
}
<span class='kw'>impl</span> <span class='ident'>PartialEq</span> <span class='kw'>for</span> <span class='ident'>EncoderError</span> {
<span class='kw'>fn</span> <span class='ident'>eq</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='ident'>EncoderError</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>match</span> (<span class='kw-2'>*</span><span class='self'>self</span>, <span class='kw-2'>*</span><span class='ident'>other</span>) {
(<span class='ident'>EncoderError</span>::<span class='ident'>FmtError</span>(_), <span class='ident'>EncoderError</span>::<span class='ident'>FmtError</span>(_)) <span class='op'>=></span> <span class='bool-val'>true</span>,
(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>, <span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>) <span class='op'>=></span> <span class='bool-val'>true</span>,
_ <span class='op'>=></span> <span class='bool-val'>false</span>,
}
}
}
<span class='kw'>impl</span> <span class='ident'>Clone</span> <span class='kw'>for</span> <span class='ident'>EncoderError</span> {
<span class='kw'>fn</span> <span class='ident'>clone</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='self'>Self</span> { <span class='kw-2'>*</span><span class='self'>self</span> }
}
<span class='doccomment'>/// Returns a readable error string for a given error code.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>error_str</span>(<span class='ident'>error</span>: <span class='ident'>ErrorCode</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'static</span> <span class='ident'>str</span> {
<span class='kw'>match</span> <span class='ident'>error</span> {
<span class='ident'>InvalidSyntax</span> <span class='op'>=></span> <span class='string'>"invalid syntax"</span>,
<span class='ident'>InvalidNumber</span> <span class='op'>=></span> <span class='string'>"invalid number"</span>,
<span class='ident'>EOFWhileParsingObject</span> <span class='op'>=></span> <span class='string'>"EOF While parsing object"</span>,
<span class='ident'>EOFWhileParsingArray</span> <span class='op'>=></span> <span class='string'>"EOF While parsing array"</span>,
<span class='ident'>EOFWhileParsingValue</span> <span class='op'>=></span> <span class='string'>"EOF While parsing value"</span>,
<span class='ident'>EOFWhileParsingString</span> <span class='op'>=></span> <span class='string'>"EOF While parsing string"</span>,
<span class='ident'>KeyMustBeAString</span> <span class='op'>=></span> <span class='string'>"key must be a string"</span>,
<span class='ident'>ExpectedColon</span> <span class='op'>=></span> <span class='string'>"expected `:`"</span>,
<span class='ident'>TrailingCharacters</span> <span class='op'>=></span> <span class='string'>"trailing characters"</span>,
<span class='ident'>TrailingComma</span> <span class='op'>=></span> <span class='string'>"trailing comma"</span>,
<span class='ident'>InvalidEscape</span> <span class='op'>=></span> <span class='string'>"invalid escape"</span>,
<span class='ident'>UnrecognizedHex</span> <span class='op'>=></span> <span class='string'>"invalid \\u{ esc}ape (unrecognized hex)"</span>,
<span class='ident'>NotFourDigit</span> <span class='op'>=></span> <span class='string'>"invalid \\u{ esc}ape (not four digits)"</span>,
<span class='ident'>ControlCharacterInString</span> <span class='op'>=></span> <span class='string'>"unescaped control character in string"</span>,
<span class='ident'>NotUtf8</span> <span class='op'>=></span> <span class='string'>"contents not utf-8"</span>,
<span class='ident'>InvalidUnicodeCodePoint</span> <span class='op'>=></span> <span class='string'>"invalid Unicode code point"</span>,
<span class='ident'>LoneLeadingSurrogateInHexEscape</span> <span class='op'>=></span> <span class='string'>"lone leading surrogate in hex escape"</span>,
<span class='ident'>UnexpectedEndOfHexEscape</span> <span class='op'>=></span> <span class='string'>"unexpected end of hex escape"</span>,
}
}
<span class='doccomment'>/// Shortcut function to decode a JSON `&str` into an object</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>decode</span><span class='op'><</span><span class='ident'>T</span>: ::<span class='ident'>Decodable</span><span class='op'>></span>(<span class='ident'>s</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='ident'>json</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='ident'>s</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>x</span>) <span class='op'>=></span> <span class='ident'>x</span>,
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>(<span class='ident'>e</span>))
};
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>decoder</span> <span class='op'>=</span> <span class='ident'>Decoder</span>::<span class='ident'>new</span>(<span class='ident'>json</span>);
::<span class='ident'>Decodable</span>::<span class='ident'>decode</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>decoder</span>)
}
<span class='doccomment'>/// Shortcut function to encode a `T` into a JSON `String`</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>encode</span><span class='op'><</span><span class='ident'>T</span>: ::<span class='ident'>Encodable</span><span class='op'>></span>(<span class='ident'>object</span>: <span class='kw-2'>&</span><span class='ident'>T</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='ident'>String</span>::<span class='ident'>new</span>();
{
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>encoder</span> <span class='op'>=</span> <span class='ident'>Encoder</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>s</span>);
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>object</span>.<span class='ident'>encode</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>encoder</span>));
}
<span class='prelude-val'>Ok</span>(<span class='ident'>s</span>)
}
<span class='kw'>impl</span> <span class='ident'>fmt</span>::<span class='ident'>Debug</span> <span class='kw'>for</span> <span class='ident'>ErrorCode</span> {
<span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='ident'>error_str</span>(<span class='kw-2'>*</span><span class='self'>self</span>).<span class='ident'>fmt</span>(<span class='ident'>f</span>)
}
}
<span class='kw'>impl</span> <span class='ident'>StdError</span> <span class='kw'>for</span> <span class='ident'>DecoderError</span> {
<span class='kw'>fn</span> <span class='ident'>description</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='ident'>str</span> { <span class='string'>"decoder error"</span> }
<span class='kw'>fn</span> <span class='ident'>cause</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='ident'>StdError</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='ident'>DecoderError</span>::<span class='ident'>ParseError</span>(<span class='kw-2'>ref</span> <span class='ident'>e</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>e</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>,
}
}
}
<span class='kw'>impl</span> <span class='ident'>fmt</span>::<span class='ident'>Display</span> <span class='kw'>for</span> <span class='ident'>DecoderError</span> {
<span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='ident'>fmt</span>::<span class='ident'>Debug</span>::<span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>)
}
}
<span class='kw'>impl</span> <span class='ident'>From</span><span class='op'><</span><span class='ident'>ParserError</span><span class='op'>></span> <span class='kw'>for</span> <span class='ident'>DecoderError</span> {
<span class='kw'>fn</span> <span class='ident'>from</span>(<span class='ident'>err</span>: <span class='ident'>ParserError</span>) <span class='op'>-></span> <span class='ident'>DecoderError</span> {
<span class='ident'>ParseError</span>(<span class='ident'>From</span>::<span class='ident'>from</span>(<span class='ident'>err</span>))
}
}
<span class='kw'>impl</span> <span class='ident'>StdError</span> <span class='kw'>for</span> <span class='ident'>ParserError</span> {
<span class='kw'>fn</span> <span class='ident'>description</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='ident'>str</span> { <span class='string'>"failed to parse json"</span> }
}
<span class='kw'>impl</span> <span class='ident'>fmt</span>::<span class='ident'>Display</span> <span class='kw'>for</span> <span class='ident'>ParserError</span> {
<span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='ident'>fmt</span>::<span class='ident'>Debug</span>::<span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>)
}
}
<span class='kw'>impl</span> <span class='ident'>From</span><span class='op'><</span><span class='ident'>io</span>::<span class='ident'>Error</span><span class='op'>></span> <span class='kw'>for</span> <span class='ident'>ParserError</span> {
<span class='kw'>fn</span> <span class='ident'>from</span>(<span class='ident'>err</span>: <span class='ident'>io</span>::<span class='ident'>Error</span>) <span class='op'>-></span> <span class='ident'>ParserError</span> {
<span class='ident'>IoError</span>(<span class='ident'>err</span>)
}
}
<span class='kw'>impl</span> <span class='ident'>StdError</span> <span class='kw'>for</span> <span class='ident'>EncoderError</span> {
<span class='kw'>fn</span> <span class='ident'>description</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='ident'>str</span> { <span class='string'>"encoder error"</span> }
}
<span class='kw'>impl</span> <span class='ident'>fmt</span>::<span class='ident'>Display</span> <span class='kw'>for</span> <span class='ident'>EncoderError</span> {
<span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='ident'>fmt</span>::<span class='ident'>Debug</span>::<span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>)
}
}
<span class='kw'>impl</span> <span class='ident'>From</span><span class='op'><</span><span class='ident'>fmt</span>::<span class='ident'>Error</span><span class='op'>></span> <span class='kw'>for</span> <span class='ident'>EncoderError</span> {
<span class='kw'>fn</span> <span class='ident'>from</span>(<span class='ident'>err</span>: <span class='ident'>fmt</span>::<span class='ident'>Error</span>) <span class='op'>-></span> <span class='ident'>EncoderError</span> { <span class='ident'>EncoderError</span>::<span class='ident'>FmtError</span>(<span class='ident'>err</span>) }
}
<span class='kw'>pub</span> <span class='kw'>type</span> <span class='ident'>EncodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>EncoderError</span><span class='op'>></span>;
<span class='kw'>pub</span> <span class='kw'>type</span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>DecoderError</span><span class='op'>></span>;
<span class='kw'>fn</span> <span class='ident'>escape_str</span>(<span class='ident'>wr</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Write</span>, <span class='ident'>v</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>wr</span>.<span class='ident'>write_str</span>(<span class='string'>"\""</span>));
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>start</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>for</span> (<span class='ident'>i</span>, <span class='ident'>byte</span>) <span class='kw'>in</span> <span class='ident'>v</span>.<span class='ident'>bytes</span>().<span class='ident'>enumerate</span>() {
<span class='kw'>let</span> <span class='ident'>escaped</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>byte</span> {
<span class='string'>b'"'</span> <span class='op'>=></span> <span class='string'>"\\\""</span>,
<span class='string'>b'\\'</span> <span class='op'>=></span> <span class='string'>"\\\\"</span>,
<span class='string'>b'\x00'</span> <span class='op'>=></span> <span class='string'>"\\u0000"</span>,
<span class='string'>b'\x01'</span> <span class='op'>=></span> <span class='string'>"\\u0001"</span>,
<span class='string'>b'\x02'</span> <span class='op'>=></span> <span class='string'>"\\u0002"</span>,
<span class='string'>b'\x03'</span> <span class='op'>=></span> <span class='string'>"\\u0003"</span>,
<span class='string'>b'\x04'</span> <span class='op'>=></span> <span class='string'>"\\u0004"</span>,
<span class='string'>b'\x05'</span> <span class='op'>=></span> <span class='string'>"\\u0005"</span>,
<span class='string'>b'\x06'</span> <span class='op'>=></span> <span class='string'>"\\u0006"</span>,
<span class='string'>b'\x07'</span> <span class='op'>=></span> <span class='string'>"\\u0007"</span>,
<span class='string'>b'\x08'</span> <span class='op'>=></span> <span class='string'>"\\b"</span>,
<span class='string'>b'\t'</span> <span class='op'>=></span> <span class='string'>"\\t"</span>,
<span class='string'>b'\n'</span> <span class='op'>=></span> <span class='string'>"\\n"</span>,
<span class='string'>b'\x0b'</span> <span class='op'>=></span> <span class='string'>"\\u000b"</span>,
<span class='string'>b'\x0c'</span> <span class='op'>=></span> <span class='string'>"\\f"</span>,
<span class='string'>b'\r'</span> <span class='op'>=></span> <span class='string'>"\\r"</span>,
<span class='string'>b'\x0e'</span> <span class='op'>=></span> <span class='string'>"\\u000e"</span>,
<span class='string'>b'\x0f'</span> <span class='op'>=></span> <span class='string'>"\\u000f"</span>,
<span class='string'>b'\x10'</span> <span class='op'>=></span> <span class='string'>"\\u0010"</span>,
<span class='string'>b'\x11'</span> <span class='op'>=></span> <span class='string'>"\\u0011"</span>,
<span class='string'>b'\x12'</span> <span class='op'>=></span> <span class='string'>"\\u0012"</span>,
<span class='string'>b'\x13'</span> <span class='op'>=></span> <span class='string'>"\\u0013"</span>,
<span class='string'>b'\x14'</span> <span class='op'>=></span> <span class='string'>"\\u0014"</span>,
<span class='string'>b'\x15'</span> <span class='op'>=></span> <span class='string'>"\\u0015"</span>,
<span class='string'>b'\x16'</span> <span class='op'>=></span> <span class='string'>"\\u0016"</span>,
<span class='string'>b'\x17'</span> <span class='op'>=></span> <span class='string'>"\\u0017"</span>,
<span class='string'>b'\x18'</span> <span class='op'>=></span> <span class='string'>"\\u0018"</span>,
<span class='string'>b'\x19'</span> <span class='op'>=></span> <span class='string'>"\\u0019"</span>,
<span class='string'>b'\x1a'</span> <span class='op'>=></span> <span class='string'>"\\u001a"</span>,
<span class='string'>b'\x1b'</span> <span class='op'>=></span> <span class='string'>"\\u001b"</span>,
<span class='string'>b'\x1c'</span> <span class='op'>=></span> <span class='string'>"\\u001c"</span>,
<span class='string'>b'\x1d'</span> <span class='op'>=></span> <span class='string'>"\\u001d"</span>,
<span class='string'>b'\x1e'</span> <span class='op'>=></span> <span class='string'>"\\u001e"</span>,
<span class='string'>b'\x1f'</span> <span class='op'>=></span> <span class='string'>"\\u001f"</span>,
<span class='string'>b'\x7f'</span> <span class='op'>=></span> <span class='string'>"\\u007f"</span>,
_ <span class='op'>=></span> { <span class='kw'>continue</span>; }
};
<span class='kw'>if</span> <span class='ident'>start</span> <span class='op'><</span> <span class='ident'>i</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>wr</span>.<span class='ident'>write_str</span>(<span class='kw-2'>&</span><span class='ident'>v</span>[<span class='ident'>start</span>..<span class='ident'>i</span>]));
}
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>wr</span>.<span class='ident'>write_str</span>(<span class='ident'>escaped</span>));
<span class='ident'>start</span> <span class='op'>=</span> <span class='ident'>i</span> <span class='op'>+</span> <span class='number'>1</span>;
}
<span class='kw'>if</span> <span class='ident'>start</span> <span class='op'>!=</span> <span class='ident'>v</span>.<span class='ident'>len</span>() {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>wr</span>.<span class='ident'>write_str</span>(<span class='kw-2'>&</span><span class='ident'>v</span>[<span class='ident'>start</span>..]));
}
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>wr</span>.<span class='ident'>write_str</span>(<span class='string'>"\""</span>));
<span class='prelude-val'>Ok</span>(())
}
<span class='kw'>fn</span> <span class='ident'>escape_char</span>(<span class='ident'>writer</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Write</span>, <span class='ident'>v</span>: <span class='ident'>char</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>buf</span> <span class='op'>=</span> [<span class='number'>0</span>; <span class='number'>4</span>];
<span class='kw'>let</span> _ <span class='op'>=</span> <span class='macro'>write</span><span class='macro'>!</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>buf</span>[..], <span class='string'>"{}"</span>, <span class='ident'>v</span>);
<span class='kw'>let</span> <span class='ident'>buf</span> <span class='op'>=</span> <span class='kw'>unsafe</span> { <span class='ident'>str</span>::<span class='ident'>from_utf8_unchecked</span>(<span class='kw-2'>&</span><span class='ident'>buf</span>[..<span class='ident'>v</span>.<span class='ident'>len_utf8</span>()]) };
<span class='ident'>escape_str</span>(<span class='ident'>writer</span>, <span class='ident'>buf</span>)
}
<span class='kw'>fn</span> <span class='ident'>spaces</span>(<span class='ident'>wr</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Write</span>, <span class='ident'>n</span>: <span class='ident'>u32</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>n</span> <span class='op'>=</span> <span class='ident'>n</span> <span class='kw'>as</span> <span class='ident'>usize</span>;
<span class='kw'>const</span> <span class='ident'>BUF</span>: <span class='kw-2'>&</span><span class='lifetime'>'static</span> <span class='ident'>str</span> <span class='op'>=</span> <span class='string'>" "</span>;
<span class='kw'>while</span> <span class='ident'>n</span> <span class='op'>>=</span> <span class='ident'>BUF</span>.<span class='ident'>len</span>() {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>wr</span>.<span class='ident'>write_str</span>(<span class='ident'>BUF</span>));
<span class='ident'>n</span> <span class='op'>-=</span> <span class='ident'>BUF</span>.<span class='ident'>len</span>();
}
<span class='kw'>if</span> <span class='ident'>n</span> <span class='op'>></span> <span class='number'>0</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>wr</span>.<span class='ident'>write_str</span>(<span class='kw-2'>&</span><span class='ident'>BUF</span>[..<span class='ident'>n</span>]));
}
<span class='prelude-val'>Ok</span>(())
}
<span class='kw'>fn</span> <span class='ident'>fmt_number_or_null</span>(<span class='ident'>v</span>: <span class='ident'>f64</span>) <span class='op'>-></span> <span class='ident'>string</span>::<span class='ident'>String</span> {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>num</span>::<span class='ident'>FpCategory</span>::{<span class='ident'>Nan</span>, <span class='ident'>Infinite</span>};
<span class='kw'>match</span> <span class='ident'>v</span>.<span class='ident'>classify</span>() {
<span class='ident'>Nan</span> <span class='op'>|</span> <span class='ident'>Infinite</span> <span class='op'>=></span> <span class='string'>"null"</span>.<span class='ident'>to_string</span>(),
_ <span class='op'>=></span> {
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='ident'>v</span>.<span class='ident'>to_string</span>();
<span class='kw'>if</span> <span class='ident'>s</span>.<span class='ident'>contains</span>(<span class='string'>"."</span>) {<span class='ident'>s</span>} <span class='kw'>else</span> {<span class='ident'>s</span> <span class='op'>+</span> <span class='string'>".0"</span>}
}
}
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>emit_enquoted_if_mapkey</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>enc</span>:<span class='ident'>ident</span>,<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>e</span>:<span class='ident'>expr</span>) <span class='op'>=></span> {
<span class='kw'>if</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>enc</span>.<span class='ident'>is_emitting_map_key</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>enc</span>.<span class='ident'>writer</span>, <span class='string'>"\"{}\""</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>e</span>));
<span class='prelude-val'>Ok</span>(())
} <span class='kw'>else</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>enc</span>.<span class='ident'>writer</span>, <span class='string'>"{}"</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>e</span>));
<span class='prelude-val'>Ok</span>(())
}
}
}
<span class='kw'>enum</span> <span class='ident'>EncodingFormat</span> {
<span class='ident'>Compact</span>,
<span class='ident'>Pretty</span> {
<span class='ident'>curr_indent</span>: <span class='ident'>u32</span>,
<span class='ident'>indent</span>: <span class='ident'>u32</span>
}
}
<span class='doccomment'>/// A structure for implementing serialization to JSON.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>writer</span>: <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> (<span class='ident'>fmt</span>::<span class='ident'>Write</span><span class='op'>+</span><span class='lifetime'>'a</span>),
<span class='ident'>format</span> : <span class='ident'>EncodingFormat</span>,
<span class='ident'>is_emitting_map_key</span>: <span class='ident'>bool</span>,
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> {
<span class='doccomment'>/// Creates a new encoder whose output will be written in human-readable</span>
<span class='doccomment'>/// JSON to the specified writer</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new_pretty</span>(<span class='ident'>writer</span>: <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Write</span>) <span class='op'>-></span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>Encoder</span> {
<span class='ident'>writer</span>: <span class='ident'>writer</span>,
<span class='ident'>format</span>: <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span> {
<span class='ident'>curr_indent</span>: <span class='number'>0</span>,
<span class='ident'>indent</span>: <span class='number'>2</span>,
},
<span class='ident'>is_emitting_map_key</span>: <span class='bool-val'>false</span>,
}
}
<span class='doccomment'>/// Creates a new encoder whose output will be written in compact</span>
<span class='doccomment'>/// JSON to the specified writer</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>writer</span>: <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Write</span>) <span class='op'>-></span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>Encoder</span> {
<span class='ident'>writer</span>: <span class='ident'>writer</span>,
<span class='ident'>format</span>: <span class='ident'>EncodingFormat</span>::<span class='ident'>Compact</span>,
<span class='ident'>is_emitting_map_key</span>: <span class='bool-val'>false</span>,
}
}
<span class='doccomment'>/// Set the number of spaces to indent for each level.</span>
<span class='doccomment'>/// This is safe to set during encoding.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>set_indent</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>new_indent</span>: <span class='ident'>u32</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span>(), ()<span class='op'>></span> {
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>curr_indent</span>, <span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>indent</span>} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='comment'>// self.indent very well could be 0 so we need to use checked division.</span>
<span class='kw'>let</span> <span class='ident'>level</span> <span class='op'>=</span> <span class='ident'>curr_indent</span>.<span class='ident'>checked_div</span>(<span class='kw-2'>*</span><span class='ident'>indent</span>).<span class='ident'>unwrap_or</span>(<span class='number'>0</span>);
<span class='kw-2'>*</span><span class='ident'>indent</span> <span class='op'>=</span> <span class='ident'>new_indent</span>;
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>=</span> <span class='ident'>level</span> <span class='op'>*</span> <span class='kw-2'>*</span><span class='ident'>indent</span>;
<span class='prelude-val'>Ok</span>(())
} <span class='kw'>else</span> {
<span class='prelude-val'>Err</span>(())
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> ::<span class='ident'>Encoder</span> <span class='kw'>for</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Error</span> <span class='op'>=</span> <span class='ident'>EncoderError</span>;
<span class='kw'>fn</span> <span class='ident'>emit_nil</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"null"</span>));
<span class='prelude-val'>Ok</span>(())
}
<span class='kw'>fn</span> <span class='ident'>emit_usize</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> { <span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>v</span>) }
<span class='kw'>fn</span> <span class='ident'>emit_u64</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>u64</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> { <span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>v</span>) }
<span class='kw'>fn</span> <span class='ident'>emit_u32</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>u32</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> { <span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>v</span>) }
<span class='kw'>fn</span> <span class='ident'>emit_u16</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>u16</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> { <span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>v</span>) }
<span class='kw'>fn</span> <span class='ident'>emit_u8</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>u8</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> { <span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>v</span>) }
<span class='kw'>fn</span> <span class='ident'>emit_isize</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>isize</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> { <span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>v</span>) }
<span class='kw'>fn</span> <span class='ident'>emit_i64</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>i64</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> { <span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>v</span>) }
<span class='kw'>fn</span> <span class='ident'>emit_i32</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>i32</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> { <span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>v</span>) }
<span class='kw'>fn</span> <span class='ident'>emit_i16</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>i16</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> { <span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>v</span>) }
<span class='kw'>fn</span> <span class='ident'>emit_i8</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>i8</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> { <span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>v</span>) }
<span class='kw'>fn</span> <span class='ident'>emit_bool</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>bool</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='kw'>if</span> <span class='ident'>v</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"true"</span>));
} <span class='kw'>else</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"false"</span>));
}
<span class='prelude-val'>Ok</span>(())
}
<span class='kw'>fn</span> <span class='ident'>emit_f64</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>f64</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='macro'>emit_enquoted_if_mapkey</span><span class='macro'>!</span>(<span class='self'>self</span>, <span class='ident'>fmt_number_or_null</span>(<span class='ident'>v</span>))
}
<span class='kw'>fn</span> <span class='ident'>emit_f32</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>f32</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>emit_f64</span>(<span class='ident'>v</span> <span class='kw'>as</span> <span class='ident'>f64</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_char</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>char</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='ident'>escape_char</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='ident'>v</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_str</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='ident'>escape_str</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='ident'>v</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_enum</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>_name</span>: <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_enum_variant</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>,
<span class='ident'>name</span>: <span class='kw-2'>&</span><span class='ident'>str</span>,
<span class='ident'>_id</span>: <span class='ident'>usize</span>,
<span class='ident'>cnt</span>: <span class='ident'>usize</span>,
<span class='ident'>f</span>: <span class='ident'>F</span>)
<span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='comment'>// enums are encoded as strings or objects</span>
<span class='comment'>// Bunny => "Bunny"</span>
<span class='comment'>// Kangaroo(34,"William") => {"variant": "Kangaroo", "fields": [34,"William"]}</span>
<span class='kw'>if</span> <span class='ident'>cnt</span> <span class='op'>==</span> <span class='number'>0</span> {
<span class='ident'>escape_str</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='ident'>name</span>)
} <span class='kw'>else</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>curr_indent</span>, <span class='ident'>indent</span>} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"{{\n"</span>));
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>+=</span> <span class='ident'>indent</span>;
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='kw-2'>*</span><span class='ident'>curr_indent</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"\"variant\": "</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>escape_str</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='ident'>name</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>",\n"</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='kw-2'>*</span><span class='ident'>curr_indent</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"\"fields\": [\n"</span>));
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>+=</span> <span class='ident'>indent</span>;
} <span class='kw'>else</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"{{\"variant\":"</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>escape_str</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='ident'>name</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>",\"fields\":["</span>));
}
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>f</span>(<span class='self'>self</span>));
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>curr_indent</span>, <span class='ident'>indent</span>} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>-=</span> <span class='ident'>indent</span>;
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"\n"</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='kw-2'>*</span><span class='ident'>curr_indent</span>));
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>-=</span> <span class='ident'>indent</span>;
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"]\n"</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='kw-2'>*</span><span class='ident'>curr_indent</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"}}"</span>));
} <span class='kw'>else</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"]}}"</span>));
}
<span class='prelude-val'>Ok</span>(())
}
}
<span class='kw'>fn</span> <span class='ident'>emit_enum_variant_arg</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='kw'>if</span> <span class='ident'>idx</span> <span class='op'>!=</span> <span class='number'>0</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>","</span>));
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{..} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"\n"</span>));
}
}
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='ident'>curr_indent</span>, ..} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='ident'>curr_indent</span>));
}
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_enum_struct_variant</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>,
<span class='ident'>name</span>: <span class='kw-2'>&</span><span class='ident'>str</span>,
<span class='ident'>id</span>: <span class='ident'>usize</span>,
<span class='ident'>cnt</span>: <span class='ident'>usize</span>,
<span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='self'>self</span>.<span class='ident'>emit_enum_variant</span>(<span class='ident'>name</span>, <span class='ident'>id</span>, <span class='ident'>cnt</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_enum_struct_variant_field</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>,
_: <span class='kw-2'>&</span><span class='ident'>str</span>,
<span class='ident'>idx</span>: <span class='ident'>usize</span>,
<span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='self'>self</span>.<span class='ident'>emit_enum_variant_arg</span>(<span class='ident'>idx</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_struct</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, _: <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>len</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='kw'>if</span> <span class='ident'>len</span> <span class='op'>==</span> <span class='number'>0</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"{{}}"</span>));
} <span class='kw'>else</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"{{"</span>));
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>curr_indent</span>, <span class='ident'>indent</span>} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>+=</span> <span class='ident'>indent</span>;
}
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>f</span>(<span class='self'>self</span>));
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>curr_indent</span>, <span class='ident'>indent</span>} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>-=</span> <span class='ident'>indent</span>;
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"\n"</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='kw-2'>*</span><span class='ident'>curr_indent</span>));
}
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"}}"</span>));
}
<span class='prelude-val'>Ok</span>(())
}
<span class='kw'>fn</span> <span class='ident'>emit_struct_field</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>name</span>: <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='kw'>if</span> <span class='ident'>idx</span> <span class='op'>!=</span> <span class='number'>0</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>","</span>));
}
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='ident'>curr_indent</span>, ..} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"\n"</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='ident'>curr_indent</span>));
}
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>escape_str</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='ident'>name</span>));
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{..} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>": "</span>));
} <span class='kw'>else</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>":"</span>));
}
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_tuple</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>len</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='self'>self</span>.<span class='ident'>emit_seq</span>(<span class='ident'>len</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_tuple_arg</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='self'>self</span>.<span class='ident'>emit_seq_elt</span>(<span class='ident'>idx</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_tuple_struct</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, _: <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>len</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='self'>self</span>.<span class='ident'>emit_seq</span>(<span class='ident'>len</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_tuple_struct_arg</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='self'>self</span>.<span class='ident'>emit_seq_elt</span>(<span class='ident'>idx</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_option</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_option_none</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='self'>self</span>.<span class='ident'>emit_nil</span>()
}
<span class='kw'>fn</span> <span class='ident'>emit_option_some</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_seq</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>len</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='kw'>if</span> <span class='ident'>len</span> <span class='op'>==</span> <span class='number'>0</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"[]"</span>));
} <span class='kw'>else</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"["</span>));
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>curr_indent</span>, <span class='ident'>indent</span>} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>+=</span> <span class='ident'>indent</span>;
}
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>f</span>(<span class='self'>self</span>));
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>curr_indent</span>, <span class='ident'>indent</span>} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>-=</span> <span class='ident'>indent</span>;
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"\n"</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='kw-2'>*</span><span class='ident'>curr_indent</span>));
}
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"]"</span>));
}
<span class='prelude-val'>Ok</span>(())
}
<span class='kw'>fn</span> <span class='ident'>emit_seq_elt</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='kw'>if</span> <span class='ident'>idx</span> <span class='op'>!=</span> <span class='number'>0</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>","</span>));
}
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>curr_indent</span>, ..} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"\n"</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='kw-2'>*</span><span class='ident'>curr_indent</span>));
}
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>emit_map</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>len</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='kw'>if</span> <span class='ident'>len</span> <span class='op'>==</span> <span class='number'>0</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"{{}}"</span>));
} <span class='kw'>else</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"{{"</span>));
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>curr_indent</span>, <span class='ident'>indent</span>} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>+=</span> <span class='ident'>indent</span>;
}
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>f</span>(<span class='self'>self</span>));
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>curr_indent</span>, <span class='ident'>indent</span>} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='kw-2'>*</span><span class='ident'>curr_indent</span> <span class='op'>-=</span> <span class='ident'>indent</span>;
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"\n"</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='kw-2'>*</span><span class='ident'>curr_indent</span>));
}
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"}}"</span>));
}
<span class='prelude-val'>Ok</span>(())
}
<span class='kw'>fn</span> <span class='ident'>emit_map_elt_key</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='kw'>if</span> <span class='ident'>idx</span> <span class='op'>!=</span> <span class='number'>0</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>","</span>));
}
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{<span class='ident'>curr_indent</span>, ..} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>"\n"</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>spaces</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='ident'>curr_indent</span>));
}
<span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> <span class='op'>=</span> <span class='bool-val'>true</span>;
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>f</span>(<span class='self'>self</span>));
<span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> <span class='op'>=</span> <span class='bool-val'>false</span>;
<span class='prelude-val'>Ok</span>(())
}
<span class='kw'>fn</span> <span class='ident'>emit_map_elt_val</span><span class='op'><</span><span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>_idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Encoder</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>EncodeResult</span><span class='op'><</span>()<span class='op'>></span>,
{
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_emitting_map_key</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span>); }
<span class='kw'>if</span> <span class='kw'>let</span> <span class='ident'>EncodingFormat</span>::<span class='ident'>Pretty</span>{..} <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>format</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>": "</span>));
} <span class='kw'>else</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>writer</span>, <span class='string'>":"</span>));
}
<span class='ident'>f</span>(<span class='self'>self</span>)
}
}
<span class='kw'>impl</span> <span class='ident'>Encodable</span> <span class='kw'>for</span> <span class='ident'>Json</span> {
<span class='kw'>fn</span> <span class='ident'>encode</span><span class='op'><</span><span class='ident'>S</span>: ::<span class='ident'>Encoder</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>e</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>S</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span>(), <span class='ident'>S</span>::<span class='ident'>Error</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>I64</span>(<span class='ident'>v</span>) <span class='op'>=></span> <span class='ident'>v</span>.<span class='ident'>encode</span>(<span class='ident'>e</span>),
<span class='ident'>Json</span>::<span class='ident'>U64</span>(<span class='ident'>v</span>) <span class='op'>=></span> <span class='ident'>v</span>.<span class='ident'>encode</span>(<span class='ident'>e</span>),
<span class='ident'>Json</span>::<span class='ident'>F64</span>(<span class='ident'>v</span>) <span class='op'>=></span> <span class='ident'>v</span>.<span class='ident'>encode</span>(<span class='ident'>e</span>),
<span class='ident'>Json</span>::<span class='ident'>String</span>(<span class='kw-2'>ref</span> <span class='ident'>v</span>) <span class='op'>=></span> <span class='ident'>v</span>.<span class='ident'>encode</span>(<span class='ident'>e</span>),
<span class='ident'>Json</span>::<span class='ident'>Boolean</span>(<span class='ident'>v</span>) <span class='op'>=></span> <span class='ident'>v</span>.<span class='ident'>encode</span>(<span class='ident'>e</span>),
<span class='ident'>Json</span>::<span class='ident'>Array</span>(<span class='kw-2'>ref</span> <span class='ident'>v</span>) <span class='op'>=></span> <span class='ident'>v</span>.<span class='ident'>encode</span>(<span class='ident'>e</span>),
<span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='kw-2'>ref</span> <span class='ident'>v</span>) <span class='op'>=></span> <span class='ident'>v</span>.<span class='ident'>encode</span>(<span class='ident'>e</span>),
<span class='ident'>Json</span>::<span class='ident'>Null</span> <span class='op'>=></span> <span class='ident'>e</span>.<span class='ident'>emit_nil</span>(),
}
}
}
<span class='doccomment'>/// Create an `AsJson` wrapper which can be used to print a value as JSON</span>
<span class='doccomment'>/// on-the-fly via `write!`</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_json</span><span class='op'><</span><span class='ident'>T</span>: <span class='ident'>Encodable</span><span class='op'>></span>(<span class='ident'>t</span>: <span class='kw-2'>&</span><span class='ident'>T</span>) <span class='op'>-></span> <span class='ident'>AsJson</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='ident'>AsJson</span> { <span class='ident'>inner</span>: <span class='ident'>t</span> }
}
<span class='doccomment'>/// Create an `AsPrettyJson` wrapper which can be used to print a value as JSON</span>
<span class='doccomment'>/// on-the-fly via `write!`</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_pretty_json</span><span class='op'><</span><span class='ident'>T</span>: <span class='ident'>Encodable</span><span class='op'>></span>(<span class='ident'>t</span>: <span class='kw-2'>&</span><span class='ident'>T</span>) <span class='op'>-></span> <span class='ident'>AsPrettyJson</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='ident'>AsPrettyJson</span> { <span class='ident'>inner</span>: <span class='ident'>t</span>, <span class='ident'>indent</span>: <span class='prelude-val'>None</span> }
}
<span class='kw'>impl</span> <span class='ident'>Json</span> {
<span class='doccomment'>/// Decodes a json value from an `&mut io::Read`</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>from_reader</span>(<span class='ident'>rdr</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>io</span>::<span class='ident'>Read</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='self'>Self</span>, <span class='ident'>BuilderError</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='ident'>contents</span> <span class='op'>=</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>c</span> <span class='op'>=</span> <span class='ident'>Vec</span>::<span class='ident'>new</span>();
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>rdr</span>.<span class='ident'>read_to_end</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>c</span>));
<span class='ident'>c</span>
};
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>str</span>::<span class='ident'>from_utf8</span>(<span class='kw-2'>&</span><span class='ident'>contents</span>).<span class='ident'>ok</span>() {
<span class='prelude-val'>Some</span>(<span class='ident'>s</span>) <span class='op'>=></span> <span class='ident'>s</span>,
_ <span class='op'>=></span> <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>NotUtf8</span>, <span class='number'>0</span>, <span class='number'>0</span>))
};
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>builder</span> <span class='op'>=</span> <span class='ident'>Builder</span>::<span class='ident'>new</span>(<span class='ident'>s</span>.<span class='ident'>chars</span>());
<span class='ident'>builder</span>.<span class='ident'>build</span>()
}
<span class='doccomment'>/// Decodes a json value from a string</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>from_str</span>(<span class='ident'>s</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='self'>Self</span>, <span class='ident'>BuilderError</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>builder</span> <span class='op'>=</span> <span class='ident'>Builder</span>::<span class='ident'>new</span>(<span class='ident'>s</span>.<span class='ident'>chars</span>());
<span class='ident'>builder</span>.<span class='ident'>build</span>()
}
<span class='doccomment'>/// Borrow this json object as a pretty object to generate a pretty</span>
<span class='doccomment'>/// representation for it via `Display`.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>pretty</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>PrettyJson</span> {
<span class='ident'>PrettyJson</span> { <span class='ident'>inner</span>: <span class='self'>self</span> }
}
<span class='doccomment'>/// If the Json value is an Object, returns the value associated with the provided key.</span>
<span class='doccomment'>/// Otherwise, returns None.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>find</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>, <span class='ident'>key</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>Json</span><span class='op'>></span>{
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='kw-2'>&</span><span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='kw-2'>ref</span> <span class='ident'>map</span>) <span class='op'>=></span> <span class='ident'>map</span>.<span class='ident'>get</span>(<span class='ident'>key</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// Attempts to get a nested Json Object for each key in `keys`.</span>
<span class='doccomment'>/// If any key is found not to exist, find_path will return None.</span>
<span class='doccomment'>/// Otherwise, it will return the Json value associated with the final key.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>find_path</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>, <span class='ident'>keys</span>: <span class='kw-2'>&</span>[<span class='kw-2'>&</span><span class='ident'>str</span>]) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>Json</span><span class='op'>></span>{
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>target</span> <span class='op'>=</span> <span class='self'>self</span>;
<span class='kw'>for</span> <span class='ident'>key</span> <span class='kw'>in</span> <span class='ident'>keys</span>.<span class='ident'>iter</span>() {
<span class='kw'>match</span> <span class='ident'>target</span>.<span class='ident'>find</span>(<span class='kw-2'>*</span><span class='ident'>key</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>t</span>) <span class='op'>=></span> { <span class='ident'>target</span> <span class='op'>=</span> <span class='ident'>t</span>; },
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='kw'>return</span> <span class='prelude-val'>None</span>
}
}
<span class='prelude-val'>Some</span>(<span class='ident'>target</span>)
}
<span class='doccomment'>/// If the Json value is an Object, performs a depth-first search until</span>
<span class='doccomment'>/// a value associated with the provided key is found. If no value is found</span>
<span class='doccomment'>/// or the Json value is not an Object, returns None.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>search</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>, <span class='ident'>key</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>Json</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='kw-2'>&</span><span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='kw-2'>ref</span> <span class='ident'>map</span>) <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>map</span>.<span class='ident'>get</span>(<span class='ident'>key</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>json_value</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>json_value</span>),
<span class='prelude-val'>None</span> <span class='op'>=></span> {
<span class='kw'>for</span> (_, <span class='ident'>v</span>) <span class='kw'>in</span> <span class='ident'>map</span>.<span class='ident'>iter</span>() {
<span class='kw'>match</span> <span class='ident'>v</span>.<span class='ident'>search</span>(<span class='ident'>key</span>) {
<span class='ident'>x</span> <span class='kw'>if</span> <span class='ident'>x</span>.<span class='ident'>is_some</span>() <span class='op'>=></span> <span class='kw'>return</span> <span class='ident'>x</span>,
_ <span class='op'>=></span> ()
}
}
<span class='prelude-val'>None</span>
}
}
},
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// Returns true if the Json value is an Object. Returns false otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_object</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='self'>self</span>.<span class='ident'>as_object</span>().<span class='ident'>is_some</span>()
}
<span class='doccomment'>/// If the Json value is an Object, returns a reference to the associated BTreeMap.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_object</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>Object</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='kw-2'>&</span><span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='kw-2'>ref</span> <span class='ident'>map</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>map</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// If the Json value is an Object, returns a mutable reference to the associated BTreeMap.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_object_mut</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>Object</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>map</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>map</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// If the Json value is an Object, returns the associated BTreeMap.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>into_object</span>(<span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>Object</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='ident'>map</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>map</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// Returns true if the Json value is an Array. Returns false otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_array</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='self'>self</span>.<span class='ident'>as_array</span>().<span class='ident'>is_some</span>()
}
<span class='doccomment'>/// If the Json value is an Array, returns a reference to the associated vector.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_array</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>Array</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='kw-2'>&</span><span class='ident'>Json</span>::<span class='ident'>Array</span>(<span class='kw-2'>ref</span> <span class='ident'>array</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='kw-2'>&</span><span class='kw-2'>*</span><span class='ident'>array</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// If the Json value is an Array, returns a mutable reference to the associated vector.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_array_mut</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>Array</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Json</span>::<span class='ident'>Array</span>(<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>list</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>list</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// If the Json value is an Array, returns the associated vector.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>into_array</span>(<span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>Array</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>Array</span>(<span class='ident'>array</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>array</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// Returns true if the Json value is a String. Returns false otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_string</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='self'>self</span>.<span class='ident'>as_string</span>().<span class='ident'>is_some</span>()
}
<span class='doccomment'>/// If the Json value is a String, returns the associated str.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_string</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>str</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>String</span>(<span class='kw-2'>ref</span> <span class='ident'>s</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='kw-2'>&</span><span class='ident'>s</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// Returns true if the Json value is a Number. Returns false otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_number</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>I64</span>(_) <span class='op'>|</span> <span class='ident'>Json</span>::<span class='ident'>U64</span>(_) <span class='op'>|</span> <span class='ident'>Json</span>::<span class='ident'>F64</span>(_) <span class='op'>=></span> <span class='bool-val'>true</span>,
_ <span class='op'>=></span> <span class='bool-val'>false</span>,
}
}
<span class='doccomment'>/// Returns true if the Json value is a i64. Returns false otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_i64</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>I64</span>(_) <span class='op'>=></span> <span class='bool-val'>true</span>,
_ <span class='op'>=></span> <span class='bool-val'>false</span>,
}
}
<span class='doccomment'>/// Returns true if the Json value is a u64. Returns false otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_u64</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>U64</span>(_) <span class='op'>=></span> <span class='bool-val'>true</span>,
_ <span class='op'>=></span> <span class='bool-val'>false</span>,
}
}
<span class='doccomment'>/// Returns true if the Json value is a f64. Returns false otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_f64</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>F64</span>(_) <span class='op'>=></span> <span class='bool-val'>true</span>,
_ <span class='op'>=></span> <span class='bool-val'>false</span>,
}
}
<span class='doccomment'>/// If the Json value is a number, return or cast it to a i64.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_i64</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>i64</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>I64</span>(<span class='ident'>n</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>n</span>),
<span class='ident'>Json</span>::<span class='ident'>U64</span>(<span class='ident'>n</span>) <span class='kw'>if</span> <span class='ident'>n</span> <span class='op'>>=</span> <span class='ident'>i64</span>::<span class='ident'>MAX</span> <span class='kw'>as</span> <span class='ident'>u64</span> <span class='op'>=></span> <span class='prelude-val'>None</span>,
<span class='ident'>Json</span>::<span class='ident'>U64</span>(<span class='ident'>n</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>n</span> <span class='kw'>as</span> <span class='ident'>i64</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// If the Json value is a number, return or cast it to a u64.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_u64</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>u64</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>I64</span>(<span class='ident'>n</span>) <span class='kw'>if</span> <span class='ident'>n</span> <span class='op'>>=</span> <span class='number'>0</span> <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>n</span> <span class='kw'>as</span> <span class='ident'>u64</span>),
<span class='ident'>Json</span>::<span class='ident'>U64</span>(<span class='ident'>n</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>n</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// If the Json value is a number, return or cast it to a f64.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_f64</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>f64</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='ident'>Json</span>::<span class='ident'>I64</span>(<span class='ident'>n</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>n</span> <span class='kw'>as</span> <span class='ident'>f64</span>),
<span class='ident'>Json</span>::<span class='ident'>U64</span>(<span class='ident'>n</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>n</span> <span class='kw'>as</span> <span class='ident'>f64</span>),
<span class='ident'>Json</span>::<span class='ident'>F64</span>(<span class='ident'>n</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>n</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// Returns true if the Json value is a Boolean. Returns false otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_boolean</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='self'>self</span>.<span class='ident'>as_boolean</span>().<span class='ident'>is_some</span>()
}
<span class='doccomment'>/// If the Json value is a Boolean, returns the associated bool.</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_boolean</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>bool</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='kw-2'>&</span><span class='ident'>Json</span>::<span class='ident'>Boolean</span>(<span class='ident'>b</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>b</span>),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// Returns true if the Json value is a Null. Returns false otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_null</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='self'>self</span>.<span class='ident'>as_null</span>().<span class='ident'>is_some</span>()
}
<span class='doccomment'>/// If the Json value is a Null, returns ().</span>
<span class='doccomment'>/// Returns None otherwise.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>as_null</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>()<span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='kw-2'>&</span><span class='ident'>Json</span>::<span class='ident'>Null</span> <span class='op'>=></span> <span class='prelude-val'>Some</span>(()),
_ <span class='op'>=></span> <span class='prelude-val'>None</span>
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> <span class='ident'>Index</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>str</span><span class='op'>></span> <span class='kw'>for</span> <span class='ident'>Json</span> {
<span class='kw'>type</span> <span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>Json</span>;
<span class='kw'>fn</span> <span class='ident'>index</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>idx</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='ident'>Json</span> {
<span class='self'>self</span>.<span class='ident'>find</span>(<span class='ident'>idx</span>).<span class='ident'>unwrap</span>()
}
}
<span class='kw'>impl</span> <span class='ident'>Index</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span> <span class='kw'>for</span> <span class='ident'>Json</span> {
<span class='kw'>type</span> <span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>Json</span>;
<span class='kw'>fn</span> <span class='ident'>index</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>, <span class='ident'>idx</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>Json</span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='kw-2'>&</span><span class='ident'>Json</span>::<span class='ident'>Array</span>(<span class='kw-2'>ref</span> <span class='ident'>v</span>) <span class='op'>=></span> <span class='kw-2'>&</span><span class='ident'>v</span>[<span class='ident'>idx</span>],
_ <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"can only index Json with usize if it is an array"</span>)
}
}
}
<span class='doccomment'>/// The output of the streaming parser.</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>PartialEq</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='ident'>JsonEvent</span> {
<span class='ident'>ObjectStart</span>,
<span class='ident'>ObjectEnd</span>,
<span class='ident'>ArrayStart</span>,
<span class='ident'>ArrayEnd</span>,
<span class='ident'>BooleanValue</span>(<span class='ident'>bool</span>),
<span class='ident'>I64Value</span>(<span class='ident'>i64</span>),
<span class='ident'>U64Value</span>(<span class='ident'>u64</span>),
<span class='ident'>F64Value</span>(<span class='ident'>f64</span>),
<span class='ident'>StringValue</span>(<span class='ident'>string</span>::<span class='ident'>String</span>),
<span class='ident'>NullValue</span>,
<span class='ident'>Error</span>(<span class='ident'>ParserError</span>),
}
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>PartialEq</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>enum</span> <span class='ident'>ParserState</span> {
<span class='comment'>// Parse a value in an array, true means first element.</span>
<span class='ident'>ParseArray</span>(<span class='ident'>bool</span>),
<span class='comment'>// Parse ',' or ']' after an element in an array.</span>
<span class='ident'>ParseArrayComma</span>,
<span class='comment'>// Parse a key:value in an object, true means first element.</span>
<span class='ident'>ParseObject</span>(<span class='ident'>bool</span>),
<span class='comment'>// Parse ',' or ']' after an element in an object.</span>
<span class='ident'>ParseObjectComma</span>,
<span class='comment'>// Initial state.</span>
<span class='ident'>ParseStart</span>,
<span class='comment'>// Expecting the stream to end.</span>
<span class='ident'>ParseBeforeFinish</span>,
<span class='comment'>// Parsing can't continue.</span>
<span class='ident'>ParseFinished</span>,
}
<span class='doccomment'>/// A Stack represents the current position of the parser in the logical</span>
<span class='doccomment'>/// structure of the JSON stream.</span>
<span class='doccomment'>/// For example foo.bar[3].x</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Stack</span> {
<span class='ident'>stack</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>InternalStackElement</span><span class='op'>></span>,
<span class='ident'>str_buffer</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span>,
}
<span class='doccomment'>/// StackElements compose a Stack.</span>
<span class='doccomment'>/// For example, Key("foo"), Key("bar"), Index(3) and Key("x") are the</span>
<span class='doccomment'>/// StackElements compositing the stack that represents foo.bar[3].x</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>PartialEq</span>, <span class='ident'>Clone</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='ident'>StackElement</span><span class='op'><</span><span class='lifetime'>'l</span><span class='op'>></span> {
<span class='ident'>Index</span>(<span class='ident'>u32</span>),
<span class='ident'>Key</span>(<span class='kw-2'>&</span><span class='lifetime'>'l</span> <span class='ident'>str</span>),
}
<span class='comment'>// Internally, Key elements are stored as indices in a buffer to avoid</span>
<span class='comment'>// allocating a string for every member of an object.</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>PartialEq</span>, <span class='ident'>Clone</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>enum</span> <span class='ident'>InternalStackElement</span> {
<span class='ident'>InternalIndex</span>(<span class='ident'>u32</span>),
<span class='ident'>InternalKey</span>(<span class='ident'>u16</span>, <span class='ident'>u16</span>), <span class='comment'>// start, size</span>
}
<span class='kw'>impl</span> <span class='ident'>Stack</span> {
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-></span> <span class='ident'>Stack</span> {
<span class='ident'>Stack</span> { <span class='ident'>stack</span>: <span class='ident'>Vec</span>::<span class='ident'>new</span>(), <span class='ident'>str_buffer</span>: <span class='ident'>Vec</span>::<span class='ident'>new</span>() }
}
<span class='doccomment'>/// Returns The number of elements in the Stack.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>len</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> { <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>len</span>() }
<span class='doccomment'>/// Returns true if the stack is empty.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_empty</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> { <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>is_empty</span>() }
<span class='doccomment'>/// Provides access to the StackElement at a given index.</span>
<span class='doccomment'>/// lower indices are at the bottom of the stack while higher indices are</span>
<span class='doccomment'>/// at the top.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>get</span><span class='op'><</span><span class='lifetime'>'l</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'l</span> <span class='self'>self</span>, <span class='ident'>idx</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>StackElement</span><span class='op'><</span><span class='lifetime'>'l</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>stack</span>[<span class='ident'>idx</span>] {
<span class='ident'>InternalIndex</span>(<span class='ident'>i</span>) <span class='op'>=></span> <span class='ident'>StackElement</span>::<span class='ident'>Index</span>(<span class='ident'>i</span>),
<span class='ident'>InternalKey</span>(<span class='ident'>start</span>, <span class='ident'>size</span>) <span class='op'>=></span> {
<span class='ident'>StackElement</span>::<span class='ident'>Key</span>(<span class='ident'>str</span>::<span class='ident'>from_utf8</span>(
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>str_buffer</span>[<span class='ident'>start</span> <span class='kw'>as</span> <span class='ident'>usize</span> .. <span class='ident'>start</span> <span class='kw'>as</span> <span class='ident'>usize</span> <span class='op'>+</span> <span class='ident'>size</span> <span class='kw'>as</span> <span class='ident'>usize</span>]).<span class='ident'>unwrap</span>())
}
}
}
<span class='doccomment'>/// Compares this stack with an array of StackElements.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_equal_to</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>rhs</span>: <span class='kw-2'>&</span>[<span class='ident'>StackElement</span>]) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>len</span>() <span class='op'>!=</span> <span class='ident'>rhs</span>.<span class='ident'>len</span>() { <span class='kw'>return</span> <span class='bool-val'>false</span>; }
<span class='kw'>for</span> <span class='ident'>i</span> <span class='kw'>in</span> <span class='number'>0</span>..<span class='ident'>rhs</span>.<span class='ident'>len</span>() {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>get</span>(<span class='ident'>i</span>) <span class='op'>!=</span> <span class='ident'>rhs</span>[<span class='ident'>i</span>] { <span class='kw'>return</span> <span class='bool-val'>false</span>; }
}
<span class='kw'>return</span> <span class='bool-val'>true</span>;
}
<span class='doccomment'>/// Returns true if the bottom-most elements of this stack are the same as</span>
<span class='doccomment'>/// the ones passed as parameter.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>starts_with</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>rhs</span>: <span class='kw-2'>&</span>[<span class='ident'>StackElement</span>]) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>len</span>() <span class='op'><</span> <span class='ident'>rhs</span>.<span class='ident'>len</span>() { <span class='kw'>return</span> <span class='bool-val'>false</span>; }
<span class='kw'>for</span> <span class='ident'>i</span> <span class='kw'>in</span> <span class='number'>0</span>..<span class='ident'>rhs</span>.<span class='ident'>len</span>() {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>get</span>(<span class='ident'>i</span>) <span class='op'>!=</span> <span class='ident'>rhs</span>[<span class='ident'>i</span>] { <span class='kw'>return</span> <span class='bool-val'>false</span>; }
}
<span class='kw'>return</span> <span class='bool-val'>true</span>;
}
<span class='doccomment'>/// Returns true if the top-most elements of this stack are the same as</span>
<span class='doccomment'>/// the ones passed as parameter.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>ends_with</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>rhs</span>: <span class='kw-2'>&</span>[<span class='ident'>StackElement</span>]) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>len</span>() <span class='op'><</span> <span class='ident'>rhs</span>.<span class='ident'>len</span>() { <span class='kw'>return</span> <span class='bool-val'>false</span>; }
<span class='kw'>let</span> <span class='ident'>offset</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>len</span>() <span class='op'>-</span> <span class='ident'>rhs</span>.<span class='ident'>len</span>();
<span class='kw'>for</span> <span class='ident'>i</span> <span class='kw'>in</span> <span class='number'>0</span>..<span class='ident'>rhs</span>.<span class='ident'>len</span>() {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>get</span>(<span class='ident'>i</span> <span class='op'>+</span> <span class='ident'>offset</span>) <span class='op'>!=</span> <span class='ident'>rhs</span>[<span class='ident'>i</span>] { <span class='kw'>return</span> <span class='bool-val'>false</span>; }
}
<span class='kw'>return</span> <span class='bool-val'>true</span>;
}
<span class='doccomment'>/// Returns the top-most element (if any).</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>top</span><span class='op'><</span><span class='lifetime'>'l</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'l</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>StackElement</span><span class='op'><</span><span class='lifetime'>'l</span><span class='op'>>></span> {
<span class='kw'>return</span> <span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>last</span>() {
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>None</span>,
<span class='prelude-val'>Some</span>(<span class='kw-2'>&</span><span class='ident'>InternalIndex</span>(<span class='ident'>i</span>)) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>StackElement</span>::<span class='ident'>Index</span>(<span class='ident'>i</span>)),
<span class='prelude-val'>Some</span>(<span class='kw-2'>&</span><span class='ident'>InternalKey</span>(<span class='ident'>start</span>, <span class='ident'>size</span>)) <span class='op'>=></span> {
<span class='prelude-val'>Some</span>(<span class='ident'>StackElement</span>::<span class='ident'>Key</span>(<span class='ident'>str</span>::<span class='ident'>from_utf8</span>(
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>str_buffer</span>[<span class='ident'>start</span> <span class='kw'>as</span> <span class='ident'>usize</span> .. (<span class='ident'>start</span><span class='op'>+</span><span class='ident'>size</span>) <span class='kw'>as</span> <span class='ident'>usize</span>]
).<span class='ident'>unwrap</span>()))
}
}
}
<span class='comment'>// Used by Parser to insert Key elements at the top of the stack.</span>
<span class='kw'>fn</span> <span class='ident'>push_key</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>key</span>: <span class='ident'>string</span>::<span class='ident'>String</span>) {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push</span>(<span class='ident'>InternalKey</span>(<span class='self'>self</span>.<span class='ident'>str_buffer</span>.<span class='ident'>len</span>() <span class='kw'>as</span> <span class='ident'>u16</span>, <span class='ident'>key</span>.<span class='ident'>len</span>() <span class='kw'>as</span> <span class='ident'>u16</span>));
<span class='kw'>for</span> <span class='ident'>c</span> <span class='kw'>in</span> <span class='ident'>key</span>.<span class='ident'>as_bytes</span>().<span class='ident'>iter</span>() {
<span class='self'>self</span>.<span class='ident'>str_buffer</span>.<span class='ident'>push</span>(<span class='kw-2'>*</span><span class='ident'>c</span>);
}
}
<span class='comment'>// Used by Parser to insert Index elements at the top of the stack.</span>
<span class='kw'>fn</span> <span class='ident'>push_index</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>index</span>: <span class='ident'>u32</span>) {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push</span>(<span class='ident'>InternalIndex</span>(<span class='ident'>index</span>));
}
<span class='comment'>// Used by Parser to remove the top-most element of the stack.</span>
<span class='kw'>fn</span> <span class='ident'>pop</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='self'>self</span>.<span class='ident'>is_empty</span>());
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>last</span>().<span class='ident'>unwrap</span>() {
<span class='ident'>InternalKey</span>(_, <span class='ident'>sz</span>) <span class='op'>=></span> {
<span class='kw'>let</span> <span class='ident'>new_size</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>str_buffer</span>.<span class='ident'>len</span>() <span class='op'>-</span> <span class='ident'>sz</span> <span class='kw'>as</span> <span class='ident'>usize</span>;
<span class='self'>self</span>.<span class='ident'>str_buffer</span>.<span class='ident'>truncate</span>(<span class='ident'>new_size</span>);
}
<span class='ident'>InternalIndex</span>(_) <span class='op'>=></span> {}
}
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>pop</span>();
}
<span class='comment'>// Used by Parser to test whether the top-most element is an index.</span>
<span class='kw'>fn</span> <span class='ident'>last_is_index</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>is_empty</span>() { <span class='kw'>return</span> <span class='bool-val'>false</span>; }
<span class='kw'>return</span> <span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>last</span>().<span class='ident'>unwrap</span>() {
<span class='ident'>InternalIndex</span>(_) <span class='op'>=></span> <span class='bool-val'>true</span>,
_ <span class='op'>=></span> <span class='bool-val'>false</span>,
}
}
<span class='comment'>// Used by Parser to increment the index of the top-most element.</span>
<span class='kw'>fn</span> <span class='ident'>bump_index</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
<span class='kw'>let</span> <span class='ident'>len</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>len</span>();
<span class='kw'>let</span> <span class='ident'>idx</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>last</span>().<span class='ident'>unwrap</span>() {
<span class='ident'>InternalIndex</span>(<span class='ident'>i</span>) <span class='op'>=></span> { <span class='ident'>i</span> <span class='op'>+</span> <span class='number'>1</span> }
_ <span class='op'>=></span> { <span class='macro'>panic</span><span class='macro'>!</span>(); }
};
<span class='self'>self</span>.<span class='ident'>stack</span>[<span class='ident'>len</span> <span class='op'>-</span> <span class='number'>1</span>] <span class='op'>=</span> <span class='ident'>InternalIndex</span>(<span class='ident'>idx</span>);
}
}
<span class='doccomment'>/// A streaming JSON parser implemented as an iterator of JsonEvent, consuming</span>
<span class='doccomment'>/// an iterator of char.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Parser</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='ident'>rdr</span>: <span class='ident'>T</span>,
<span class='ident'>ch</span>: <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>char</span><span class='op'>></span>,
<span class='ident'>line</span>: <span class='ident'>usize</span>,
<span class='ident'>col</span>: <span class='ident'>usize</span>,
<span class='comment'>// We maintain a stack representing where we are in the logical structure</span>
<span class='comment'>// of the JSON stream.</span>
<span class='ident'>stack</span>: <span class='ident'>Stack</span>,
<span class='comment'>// A state machine is kept to make it possible to interrupt and resume parsing.</span>
<span class='ident'>state</span>: <span class='ident'>ParserState</span>,
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>T</span>: <span class='ident'>Iterator</span><span class='op'><</span><span class='ident'>Item</span> <span class='op'>=</span> <span class='ident'>char</span><span class='op'>>></span> <span class='ident'>Iterator</span> <span class='kw'>for</span> <span class='ident'>Parser</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Item</span> <span class='op'>=</span> <span class='ident'>JsonEvent</span>;
<span class='kw'>fn</span> <span class='ident'>next</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>JsonEvent</span><span class='op'>></span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>==</span> <span class='ident'>ParseFinished</span> {
<span class='kw'>return</span> <span class='prelude-val'>None</span>;
}
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>==</span> <span class='ident'>ParseBeforeFinish</span> {
<span class='self'>self</span>.<span class='ident'>parse_whitespace</span>();
<span class='comment'>// Make sure there is no trailing characters.</span>
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>eof</span>() {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>ParseFinished</span>;
<span class='kw'>return</span> <span class='prelude-val'>None</span>;
} <span class='kw'>else</span> {
<span class='kw'>return</span> <span class='prelude-val'>Some</span>(<span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>TrailingCharacters</span>));
}
}
<span class='kw'>return</span> <span class='prelude-val'>Some</span>(<span class='self'>self</span>.<span class='ident'>parse</span>());
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>T</span>: <span class='ident'>Iterator</span><span class='op'><</span><span class='ident'>Item</span> <span class='op'>=</span> <span class='ident'>char</span><span class='op'>>></span> <span class='ident'>Parser</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='doccomment'>/// Creates the JSON parser.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>rdr</span>: <span class='ident'>T</span>) <span class='op'>-></span> <span class='ident'>Parser</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>p</span> <span class='op'>=</span> <span class='ident'>Parser</span> {
<span class='ident'>rdr</span>: <span class='ident'>rdr</span>,
<span class='ident'>ch</span>: <span class='prelude-val'>Some</span>(<span class='string'>'\x00'</span>),
<span class='ident'>line</span>: <span class='number'>1</span>,
<span class='ident'>col</span>: <span class='number'>0</span>,
<span class='ident'>stack</span>: <span class='ident'>Stack</span>::<span class='ident'>new</span>(),
<span class='ident'>state</span>: <span class='ident'>ParseStart</span>,
};
<span class='ident'>p</span>.<span class='ident'>bump</span>();
<span class='kw'>return</span> <span class='ident'>p</span>;
}
<span class='doccomment'>/// Provides access to the current position in the logical structure of the</span>
<span class='doccomment'>/// JSON stream.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>stack</span><span class='op'><</span><span class='lifetime'>'l</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'l</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'l</span> <span class='ident'>Stack</span> {
<span class='kw'>return</span> <span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>stack</span>;
}
<span class='kw'>fn</span> <span class='ident'>eof</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> { <span class='self'>self</span>.<span class='ident'>ch</span>.<span class='ident'>is_none</span>() }
<span class='kw'>fn</span> <span class='ident'>ch_or_null</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>char</span> { <span class='self'>self</span>.<span class='ident'>ch</span>.<span class='ident'>unwrap_or</span>(<span class='string'>'\x00'</span>) }
<span class='kw'>fn</span> <span class='ident'>bump</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
<span class='self'>self</span>.<span class='ident'>ch</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>rdr</span>.<span class='ident'>next</span>();
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'\n'</span>) {
<span class='self'>self</span>.<span class='ident'>line</span> <span class='op'>+=</span> <span class='number'>1</span>;
<span class='self'>self</span>.<span class='ident'>col</span> <span class='op'>=</span> <span class='number'>1</span>;
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>col</span> <span class='op'>+=</span> <span class='number'>1</span>;
}
}
<span class='kw'>fn</span> <span class='ident'>next_char</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>char</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='self'>self</span>.<span class='ident'>ch</span>
}
<span class='kw'>fn</span> <span class='ident'>ch_is</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>c</span>: <span class='ident'>char</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='self'>self</span>.<span class='ident'>ch</span> <span class='op'>==</span> <span class='prelude-val'>Some</span>(<span class='ident'>c</span>)
}
<span class='kw'>fn</span> <span class='ident'>error</span><span class='op'><</span><span class='ident'>E</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>reason</span>: <span class='ident'>ErrorCode</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>E</span>, <span class='ident'>ParserError</span><span class='op'>></span> {
<span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>reason</span>, <span class='self'>self</span>.<span class='ident'>line</span>, <span class='self'>self</span>.<span class='ident'>col</span>))
}
<span class='kw'>fn</span> <span class='ident'>parse_whitespace</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
<span class='kw'>while</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>' '</span>) <span class='op'>||</span>
<span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'\n'</span>) <span class='op'>||</span>
<span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'\t'</span>) <span class='op'>||</span>
<span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'\r'</span>) { <span class='self'>self</span>.<span class='ident'>bump</span>(); }
}
<span class='kw'>fn</span> <span class='ident'>parse_number</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>JsonEvent</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>neg</span> <span class='op'>=</span> <span class='bool-val'>false</span>;
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'-'</span>) {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='ident'>neg</span> <span class='op'>=</span> <span class='bool-val'>true</span>;
}
<span class='kw'>let</span> <span class='ident'>res</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>parse_u64</span>() {
<span class='prelude-val'>Ok</span>(<span class='ident'>res</span>) <span class='op'>=></span> <span class='ident'>res</span>,
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> { <span class='kw'>return</span> <span class='ident'>Error</span>(<span class='ident'>e</span>); }
};
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'.'</span>) <span class='op'>||</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'e'</span>) <span class='op'>||</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'E'</span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>res</span> <span class='op'>=</span> <span class='ident'>res</span> <span class='kw'>as</span> <span class='ident'>f64</span>;
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'.'</span>) {
<span class='ident'>res</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>parse_decimal</span>(<span class='ident'>res</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>res</span>) <span class='op'>=></span> <span class='ident'>res</span>,
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> { <span class='kw'>return</span> <span class='ident'>Error</span>(<span class='ident'>e</span>); }
};
}
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'e'</span>) <span class='op'>||</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'E'</span>) {
<span class='ident'>res</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>parse_exponent</span>(<span class='ident'>res</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>res</span>) <span class='op'>=></span> <span class='ident'>res</span>,
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> { <span class='kw'>return</span> <span class='ident'>Error</span>(<span class='ident'>e</span>); }
};
}
<span class='kw'>if</span> <span class='ident'>neg</span> {
<span class='ident'>res</span> <span class='op'>*=</span> <span class='op'>-</span><span class='number'>1.0</span>;
}
<span class='ident'>F64Value</span>(<span class='ident'>res</span>)
} <span class='kw'>else</span> {
<span class='kw'>if</span> <span class='ident'>neg</span> {
<span class='comment'>// Make sure we don't underflow.</span>
<span class='kw'>if</span> <span class='ident'>res</span> <span class='op'>></span> (<span class='ident'>i64</span>::<span class='ident'>MAX</span> <span class='kw'>as</span> <span class='ident'>u64</span>) <span class='op'>+</span> <span class='number'>1</span> {
<span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidNumber</span>, <span class='self'>self</span>.<span class='ident'>line</span>, <span class='self'>self</span>.<span class='ident'>col</span>))
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='ident'>res</span> <span class='op'>==</span> <span class='number'>0</span> {
<span class='ident'>I64Value</span>(<span class='ident'>res</span> <span class='kw'>as</span> <span class='ident'>i64</span>)
} <span class='kw'>else</span> {
<span class='ident'>I64Value</span>((<span class='op'>!</span><span class='ident'>res</span> <span class='op'>+</span> <span class='number'>1</span>) <span class='kw'>as</span> <span class='ident'>i64</span>)
}
} <span class='kw'>else</span> {
<span class='ident'>U64Value</span>(<span class='ident'>res</span>)
}
}
}
<span class='kw'>fn</span> <span class='ident'>parse_u64</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u64</span>, <span class='ident'>ParserError</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>accum</span>: <span class='ident'>u64</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() {
<span class='string'>'0'</span> <span class='op'>=></span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='comment'>// A leading '0' must be the only digit before the decimal point.</span>
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() {
<span class='string'>'0'</span> ... <span class='string'>'9'</span> <span class='op'>=></span> <span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>InvalidNumber</span>),
_ <span class='op'>=></span> ()
}
},
<span class='string'>'1'</span> ... <span class='string'>'9'</span> <span class='op'>=></span> {
<span class='kw'>while</span> <span class='op'>!</span><span class='self'>self</span>.<span class='ident'>eof</span>() {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() {
<span class='ident'>c</span> @ <span class='string'>'0'</span> ... <span class='string'>'9'</span> <span class='op'>=></span> {
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>try_or_invalid</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>e</span>: <span class='ident'>expr</span>) <span class='op'>=></span> {
<span class='kw'>match</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>e</span> {
<span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=></span> <span class='ident'>v</span>,
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>InvalidNumber</span>)
}
}
}
<span class='ident'>accum</span> <span class='op'>=</span> <span class='macro'>try_or_invalid</span><span class='macro'>!</span>(<span class='ident'>accum</span>.<span class='ident'>checked_mul</span>(<span class='number'>10</span>));
<span class='ident'>accum</span> <span class='op'>=</span> <span class='macro'>try_or_invalid</span><span class='macro'>!</span>(<span class='ident'>accum</span>.<span class='ident'>checked_add</span>((<span class='ident'>c</span> <span class='kw'>as</span> <span class='ident'>u64</span>) <span class='op'>-</span> (<span class='string'>'0'</span> <span class='kw'>as</span> <span class='ident'>u64</span>)));
<span class='self'>self</span>.<span class='ident'>bump</span>();
}
_ <span class='op'>=></span> <span class='kw'>break</span>,
}
}
}
_ <span class='op'>=></span> <span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>InvalidNumber</span>),
}
<span class='prelude-val'>Ok</span>(<span class='ident'>accum</span>)
}
<span class='kw'>fn</span> <span class='ident'>parse_decimal</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='kw-2'>mut</span> <span class='ident'>res</span>: <span class='ident'>f64</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>f64</span>, <span class='ident'>ParserError</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='comment'>// Make sure a digit follows the decimal place.</span>
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() {
<span class='string'>'0'</span> ... <span class='string'>'9'</span> <span class='op'>=></span> (),
_ <span class='op'>=></span> <span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>InvalidNumber</span>)
}
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>dec</span> <span class='op'>=</span> <span class='number'>1.0</span>;
<span class='kw'>while</span> <span class='op'>!</span><span class='self'>self</span>.<span class='ident'>eof</span>() {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() {
<span class='ident'>c</span> @ <span class='string'>'0'</span> ... <span class='string'>'9'</span> <span class='op'>=></span> {
<span class='ident'>dec</span> <span class='op'>/=</span> <span class='number'>10.0</span>;
<span class='ident'>res</span> <span class='op'>+=</span> (((<span class='ident'>c</span> <span class='kw'>as</span> <span class='ident'>isize</span>) <span class='op'>-</span> (<span class='string'>'0'</span> <span class='kw'>as</span> <span class='ident'>isize</span>)) <span class='kw'>as</span> <span class='ident'>f64</span>) <span class='op'>*</span> <span class='ident'>dec</span>;
<span class='self'>self</span>.<span class='ident'>bump</span>();
}
_ <span class='op'>=></span> <span class='kw'>break</span>,
}
}
<span class='prelude-val'>Ok</span>(<span class='ident'>res</span>)
}
<span class='kw'>fn</span> <span class='ident'>parse_exponent</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='kw-2'>mut</span> <span class='ident'>res</span>: <span class='ident'>f64</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>f64</span>, <span class='ident'>ParserError</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>exp</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>neg_exp</span> <span class='op'>=</span> <span class='bool-val'>false</span>;
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'+'</span>) {
<span class='self'>self</span>.<span class='ident'>bump</span>();
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'-'</span>) {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='ident'>neg_exp</span> <span class='op'>=</span> <span class='bool-val'>true</span>;
}
<span class='comment'>// Make sure a digit follows the exponent place.</span>
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() {
<span class='string'>'0'</span> ... <span class='string'>'9'</span> <span class='op'>=></span> (),
_ <span class='op'>=></span> <span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>InvalidNumber</span>)
}
<span class='kw'>while</span> <span class='op'>!</span><span class='self'>self</span>.<span class='ident'>eof</span>() {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() {
<span class='ident'>c</span> @ <span class='string'>'0'</span> ... <span class='string'>'9'</span> <span class='op'>=></span> {
<span class='ident'>exp</span> <span class='op'>*=</span> <span class='number'>10</span>;
<span class='ident'>exp</span> <span class='op'>+=</span> (<span class='ident'>c</span> <span class='kw'>as</span> <span class='ident'>usize</span>) <span class='op'>-</span> (<span class='string'>'0'</span> <span class='kw'>as</span> <span class='ident'>usize</span>);
<span class='self'>self</span>.<span class='ident'>bump</span>();
}
_ <span class='op'>=></span> <span class='kw'>break</span>
}
}
<span class='kw'>let</span> <span class='ident'>exp</span> <span class='op'>=</span> <span class='number'>10_f64</span>.<span class='ident'>powi</span>(<span class='ident'>exp</span> <span class='kw'>as</span> <span class='ident'>i32</span>);
<span class='kw'>if</span> <span class='ident'>neg_exp</span> {
<span class='ident'>res</span> <span class='op'>/=</span> <span class='ident'>exp</span>;
} <span class='kw'>else</span> {
<span class='ident'>res</span> <span class='op'>*=</span> <span class='ident'>exp</span>;
}
<span class='prelude-val'>Ok</span>(<span class='ident'>res</span>)
}
<span class='kw'>fn</span> <span class='ident'>decode_hex_escape</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>u16</span>, <span class='ident'>ParserError</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>i</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>n</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>while</span> <span class='ident'>i</span> <span class='op'><</span> <span class='number'>4</span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='ident'>n</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() {
<span class='ident'>c</span> @ <span class='string'>'0'</span> ... <span class='string'>'9'</span> <span class='op'>=></span> <span class='ident'>n</span> <span class='op'>*</span> <span class='number'>16</span> <span class='op'>+</span> ((<span class='ident'>c</span> <span class='kw'>as</span> <span class='ident'>u16</span>) <span class='op'>-</span> (<span class='string'>'0'</span> <span class='kw'>as</span> <span class='ident'>u16</span>)),
<span class='ident'>c</span> @ <span class='string'>'a'</span> ... <span class='string'>'f'</span> <span class='op'>=></span> <span class='ident'>n</span> <span class='op'>*</span> <span class='number'>16</span> <span class='op'>+</span> (<span class='number'>10</span> <span class='op'>+</span> (<span class='ident'>c</span> <span class='kw'>as</span> <span class='ident'>u16</span>) <span class='op'>-</span> (<span class='string'>'a'</span> <span class='kw'>as</span> <span class='ident'>u16</span>)),
<span class='ident'>c</span> @ <span class='string'>'A'</span> ... <span class='string'>'F'</span> <span class='op'>=></span> <span class='ident'>n</span> <span class='op'>*</span> <span class='number'>16</span> <span class='op'>+</span> (<span class='number'>10</span> <span class='op'>+</span> (<span class='ident'>c</span> <span class='kw'>as</span> <span class='ident'>u16</span>) <span class='op'>-</span> (<span class='string'>'A'</span> <span class='kw'>as</span> <span class='ident'>u16</span>)),
_ <span class='op'>=></span> <span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>InvalidEscape</span>)
};
<span class='ident'>i</span> <span class='op'>+=</span> <span class='number'>1</span>;
}
<span class='prelude-val'>Ok</span>(<span class='ident'>n</span>)
}
<span class='kw'>fn</span> <span class='ident'>parse_str</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span>, <span class='ident'>ParserError</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>escape</span> <span class='op'>=</span> <span class='bool-val'>false</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>res</span> <span class='op'>=</span> <span class='ident'>string</span>::<span class='ident'>String</span>::<span class='ident'>new</span>();
<span class='kw'>loop</span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>eof</span>() {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>EOFWhileParsingString</span>);
}
<span class='kw'>if</span> <span class='ident'>escape</span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() {
<span class='string'>'"'</span> <span class='op'>=></span> <span class='ident'>res</span>.<span class='ident'>push</span>(<span class='string'>'"'</span>),
<span class='string'>'\\'</span> <span class='op'>=></span> <span class='ident'>res</span>.<span class='ident'>push</span>(<span class='string'>'\\'</span>),
<span class='string'>'/'</span> <span class='op'>=></span> <span class='ident'>res</span>.<span class='ident'>push</span>(<span class='string'>'/'</span>),
<span class='string'>'b'</span> <span class='op'>=></span> <span class='ident'>res</span>.<span class='ident'>push</span>(<span class='string'>'\x08'</span>),
<span class='string'>'f'</span> <span class='op'>=></span> <span class='ident'>res</span>.<span class='ident'>push</span>(<span class='string'>'\x0c'</span>),
<span class='string'>'n'</span> <span class='op'>=></span> <span class='ident'>res</span>.<span class='ident'>push</span>(<span class='string'>'\n'</span>),
<span class='string'>'r'</span> <span class='op'>=></span> <span class='ident'>res</span>.<span class='ident'>push</span>(<span class='string'>'\r'</span>),
<span class='string'>'t'</span> <span class='op'>=></span> <span class='ident'>res</span>.<span class='ident'>push</span>(<span class='string'>'\t'</span>),
<span class='string'>'u'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>decode_hex_escape</span>()) {
<span class='number'>0xDC00</span> ... <span class='number'>0xDFFF</span> <span class='op'>=></span> {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>LoneLeadingSurrogateInHexEscape</span>)
}
<span class='comment'>// Non-BMP characters are encoded as a sequence of</span>
<span class='comment'>// two hex escapes, representing UTF-16 surrogates.</span>
<span class='ident'>n1</span> @ <span class='number'>0xD800</span> ... <span class='number'>0xDBFF</span> <span class='op'>=></span> {
<span class='kw'>match</span> (<span class='self'>self</span>.<span class='ident'>next_char</span>(), <span class='self'>self</span>.<span class='ident'>next_char</span>()) {
(<span class='prelude-val'>Some</span>(<span class='string'>'\\'</span>), <span class='prelude-val'>Some</span>(<span class='string'>'u'</span>)) <span class='op'>=></span> (),
_ <span class='op'>=></span> <span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>UnexpectedEndOfHexEscape</span>),
}
<span class='kw'>let</span> <span class='ident'>n2</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>decode_hex_escape</span>());
<span class='kw'>if</span> <span class='ident'>n2</span> <span class='op'><</span> <span class='number'>0xDC00</span> <span class='op'>||</span> <span class='ident'>n2</span> <span class='op'>></span> <span class='number'>0xDFFF</span> {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>LoneLeadingSurrogateInHexEscape</span>)
}
<span class='kw'>let</span> <span class='ident'>c</span> <span class='op'>=</span> (((<span class='ident'>n1</span> <span class='op'>-</span> <span class='number'>0xD800</span>) <span class='kw'>as</span> <span class='ident'>u32</span>) <span class='op'><<</span> <span class='number'>10</span> <span class='op'>|</span>
(<span class='ident'>n2</span> <span class='op'>-</span> <span class='number'>0xDC00</span>) <span class='kw'>as</span> <span class='ident'>u32</span>) <span class='op'>+</span> <span class='number'>0x1_0000</span>;
<span class='ident'>res</span>.<span class='ident'>push</span>(<span class='ident'>char</span>::<span class='ident'>from_u32</span>(<span class='ident'>c</span>).<span class='ident'>unwrap</span>());
}
<span class='ident'>n</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>char</span>::<span class='ident'>from_u32</span>(<span class='ident'>n</span> <span class='kw'>as</span> <span class='ident'>u32</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>c</span>) <span class='op'>=></span> <span class='ident'>res</span>.<span class='ident'>push</span>(<span class='ident'>c</span>),
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>InvalidUnicodeCodePoint</span>),
},
},
_ <span class='op'>=></span> <span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>InvalidEscape</span>),
}
<span class='ident'>escape</span> <span class='op'>=</span> <span class='bool-val'>false</span>;
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'\\'</span>) {
<span class='ident'>escape</span> <span class='op'>=</span> <span class='bool-val'>true</span>;
} <span class='kw'>else</span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch</span> {
<span class='prelude-val'>Some</span>(<span class='string'>'"'</span>) <span class='op'>=></span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>res</span>);
},
<span class='prelude-val'>Some</span>(<span class='ident'>c</span>) <span class='kw'>if</span> <span class='ident'>c</span> <span class='op'><=</span> <span class='string'>'\u{1F}'</span> <span class='op'>=></span>
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error</span>(<span class='ident'>ControlCharacterInString</span>),
<span class='prelude-val'>Some</span>(<span class='ident'>c</span>) <span class='op'>=></span> <span class='ident'>res</span>.<span class='ident'>push</span>(<span class='ident'>c</span>),
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='macro'>unreachable</span><span class='macro'>!</span>()
}
}
}
}
<span class='comment'>// Invoked at each iteration, consumes the stream until it has enough</span>
<span class='comment'>// information to return a JsonEvent.</span>
<span class='comment'>// Manages an internal state so that parsing can be interrupted and resumed.</span>
<span class='comment'>// Also keeps track of the position in the logical structure of the json</span>
<span class='comment'>// stream int the form of a stack that can be queried by the user using the</span>
<span class='comment'>// stack() method.</span>
<span class='kw'>fn</span> <span class='ident'>parse</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>JsonEvent</span> {
<span class='kw'>loop</span> {
<span class='comment'>// The only paths where the loop can spin a new iteration</span>
<span class='comment'>// are in the cases ParseArrayComma and ParseObjectComma if ','</span>
<span class='comment'>// is parsed. In these cases the state is set to (respectively)</span>
<span class='comment'>// ParseArray(false) and ParseObject(false), which always return,</span>
<span class='comment'>// so there is no risk of getting stuck in an infinite loop.</span>
<span class='comment'>// All other paths return before the end of the loop's iteration.</span>
<span class='self'>self</span>.<span class='ident'>parse_whitespace</span>();
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>state</span> {
<span class='ident'>ParseStart</span> <span class='op'>=></span> {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>parse_start</span>();
}
<span class='ident'>ParseArray</span>(<span class='ident'>first</span>) <span class='op'>=></span> {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>parse_array</span>(<span class='ident'>first</span>);
}
<span class='ident'>ParseArrayComma</span> <span class='op'>=></span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>parse_array_comma_or_end</span>() {
<span class='prelude-val'>Some</span>(<span class='ident'>evt</span>) <span class='op'>=></span> { <span class='kw'>return</span> <span class='ident'>evt</span>; }
<span class='prelude-val'>None</span> <span class='op'>=></span> {}
}
}
<span class='ident'>ParseObject</span>(<span class='ident'>first</span>) <span class='op'>=></span> {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>parse_object</span>(<span class='ident'>first</span>);
}
<span class='ident'>ParseObjectComma</span> <span class='op'>=></span> {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>pop</span>();
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>','</span>) {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>ParseObject</span>(<span class='bool-val'>false</span>);
<span class='self'>self</span>.<span class='ident'>bump</span>();
} <span class='kw'>else</span> {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>parse_object_end</span>();
}
}
_ <span class='op'>=></span> {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>InvalidSyntax</span>);
}
}
}
}
<span class='kw'>fn</span> <span class='ident'>parse_start</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>JsonEvent</span> {
<span class='kw'>let</span> <span class='ident'>val</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>parse_value</span>();
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>val</span> {
<span class='ident'>Error</span>(_) <span class='op'>=></span> <span class='ident'>ParseFinished</span>,
<span class='ident'>ArrayStart</span> <span class='op'>=></span> <span class='ident'>ParseArray</span>(<span class='bool-val'>true</span>),
<span class='ident'>ObjectStart</span> <span class='op'>=></span> <span class='ident'>ParseObject</span>(<span class='bool-val'>true</span>),
_ <span class='op'>=></span> <span class='ident'>ParseBeforeFinish</span>,
};
<span class='kw'>return</span> <span class='ident'>val</span>;
}
<span class='kw'>fn</span> <span class='ident'>parse_array</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>first</span>: <span class='ident'>bool</span>) <span class='op'>-></span> <span class='ident'>JsonEvent</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>']'</span>) {
<span class='kw'>if</span> <span class='op'>!</span><span class='ident'>first</span> {
<span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>InvalidSyntax</span>)
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>is_empty</span>() {
<span class='ident'>ParseBeforeFinish</span>
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>last_is_index</span>() {
<span class='ident'>ParseArrayComma</span>
} <span class='kw'>else</span> {
<span class='ident'>ParseObjectComma</span>
};
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='ident'>ArrayEnd</span>
}
} <span class='kw'>else</span> {
<span class='kw'>if</span> <span class='ident'>first</span> {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push_index</span>(<span class='number'>0</span>);
}
<span class='kw'>let</span> <span class='ident'>val</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>parse_value</span>();
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>val</span> {
<span class='ident'>Error</span>(_) <span class='op'>=></span> <span class='ident'>ParseFinished</span>,
<span class='ident'>ArrayStart</span> <span class='op'>=></span> <span class='ident'>ParseArray</span>(<span class='bool-val'>true</span>),
<span class='ident'>ObjectStart</span> <span class='op'>=></span> <span class='ident'>ParseObject</span>(<span class='bool-val'>true</span>),
_ <span class='op'>=></span> <span class='ident'>ParseArrayComma</span>,
};
<span class='ident'>val</span>
}
}
<span class='kw'>fn</span> <span class='ident'>parse_array_comma_or_end</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>JsonEvent</span><span class='op'>></span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>','</span>) {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>bump_index</span>();
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>ParseArray</span>(<span class='bool-val'>false</span>);
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='prelude-val'>None</span>
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>']'</span>) {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>pop</span>();
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>is_empty</span>() {
<span class='ident'>ParseBeforeFinish</span>
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>last_is_index</span>() {
<span class='ident'>ParseArrayComma</span>
} <span class='kw'>else</span> {
<span class='ident'>ParseObjectComma</span>
};
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='prelude-val'>Some</span>(<span class='ident'>ArrayEnd</span>)
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>eof</span>() {
<span class='prelude-val'>Some</span>(<span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>EOFWhileParsingArray</span>))
} <span class='kw'>else</span> {
<span class='prelude-val'>Some</span>(<span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>InvalidSyntax</span>))
}
}
<span class='kw'>fn</span> <span class='ident'>parse_object</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>first</span>: <span class='ident'>bool</span>) <span class='op'>-></span> <span class='ident'>JsonEvent</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'}'</span>) {
<span class='kw'>if</span> <span class='op'>!</span><span class='ident'>first</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>is_empty</span>() {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>TrailingComma</span>);
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>pop</span>();
}
}
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>is_empty</span>() {
<span class='ident'>ParseBeforeFinish</span>
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>last_is_index</span>() {
<span class='ident'>ParseArrayComma</span>
} <span class='kw'>else</span> {
<span class='ident'>ParseObjectComma</span>
};
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='kw'>return</span> <span class='ident'>ObjectEnd</span>;
}
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>eof</span>() {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>EOFWhileParsingObject</span>);
}
<span class='kw'>if</span> <span class='op'>!</span><span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'"'</span>) {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>KeyMustBeAString</span>);
}
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>parse_str</span>() {
<span class='prelude-val'>Ok</span>(<span class='ident'>s</span>) <span class='op'>=></span> <span class='ident'>s</span>,
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>ParseFinished</span>;
<span class='kw'>return</span> <span class='ident'>Error</span>(<span class='ident'>e</span>);
}
};
<span class='self'>self</span>.<span class='ident'>parse_whitespace</span>();
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>eof</span>() {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>EOFWhileParsingObject</span>);
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() <span class='op'>!=</span> <span class='string'>':'</span> {
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>ExpectedColon</span>);
}
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push_key</span>(<span class='ident'>s</span>);
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='self'>self</span>.<span class='ident'>parse_whitespace</span>();
<span class='kw'>let</span> <span class='ident'>val</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>parse_value</span>();
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>val</span> {
<span class='ident'>Error</span>(_) <span class='op'>=></span> <span class='ident'>ParseFinished</span>,
<span class='ident'>ArrayStart</span> <span class='op'>=></span> <span class='ident'>ParseArray</span>(<span class='bool-val'>true</span>),
<span class='ident'>ObjectStart</span> <span class='op'>=></span> <span class='ident'>ParseObject</span>(<span class='bool-val'>true</span>),
_ <span class='op'>=></span> <span class='ident'>ParseObjectComma</span>,
};
<span class='kw'>return</span> <span class='ident'>val</span>;
}
<span class='kw'>fn</span> <span class='ident'>parse_object_end</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>JsonEvent</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>ch_is</span>(<span class='string'>'}'</span>) {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>is_empty</span>() {
<span class='ident'>ParseBeforeFinish</span>
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>last_is_index</span>() {
<span class='ident'>ParseArrayComma</span>
} <span class='kw'>else</span> {
<span class='ident'>ParseObjectComma</span>
};
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='ident'>ObjectEnd</span>
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>eof</span>() {
<span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>EOFWhileParsingObject</span>)
} <span class='kw'>else</span> {
<span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>InvalidSyntax</span>)
}
}
<span class='kw'>fn</span> <span class='ident'>parse_value</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>JsonEvent</span> {
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>eof</span>() { <span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>EOFWhileParsingValue</span>); }
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>ch_or_null</span>() {
<span class='string'>'n'</span> <span class='op'>=></span> { <span class='self'>self</span>.<span class='ident'>parse_ident</span>(<span class='string'>"ull"</span>, <span class='ident'>NullValue</span>) }
<span class='string'>'t'</span> <span class='op'>=></span> { <span class='self'>self</span>.<span class='ident'>parse_ident</span>(<span class='string'>"rue"</span>, <span class='ident'>BooleanValue</span>(<span class='bool-val'>true</span>)) }
<span class='string'>'f'</span> <span class='op'>=></span> { <span class='self'>self</span>.<span class='ident'>parse_ident</span>(<span class='string'>"alse"</span>, <span class='ident'>BooleanValue</span>(<span class='bool-val'>false</span>)) }
<span class='string'>'0'</span> ... <span class='string'>'9'</span> <span class='op'>|</span> <span class='string'>'-'</span> <span class='op'>=></span> <span class='self'>self</span>.<span class='ident'>parse_number</span>(),
<span class='string'>'"'</span> <span class='op'>=></span> <span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>parse_str</span>() {
<span class='prelude-val'>Ok</span>(<span class='ident'>s</span>) <span class='op'>=></span> <span class='ident'>StringValue</span>(<span class='ident'>s</span>),
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> <span class='ident'>Error</span>(<span class='ident'>e</span>),
},
<span class='string'>'['</span> <span class='op'>=></span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='ident'>ArrayStart</span>
}
<span class='string'>'{'</span> <span class='op'>=></span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='ident'>ObjectStart</span>
}
_ <span class='op'>=></span> { <span class='self'>self</span>.<span class='ident'>error_event</span>(<span class='ident'>InvalidSyntax</span>) }
}
}
<span class='kw'>fn</span> <span class='ident'>parse_ident</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>ident</span>: <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>value</span>: <span class='ident'>JsonEvent</span>) <span class='op'>-></span> <span class='ident'>JsonEvent</span> {
<span class='kw'>if</span> <span class='ident'>ident</span>.<span class='ident'>chars</span>().<span class='ident'>all</span>(<span class='op'>|</span><span class='ident'>c</span><span class='op'>|</span> <span class='prelude-val'>Some</span>(<span class='ident'>c</span>) <span class='op'>==</span> <span class='self'>self</span>.<span class='ident'>next_char</span>()) {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='ident'>value</span>
} <span class='kw'>else</span> {
<span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='self'>self</span>.<span class='ident'>line</span>, <span class='self'>self</span>.<span class='ident'>col</span>))
}
}
<span class='kw'>fn</span> <span class='ident'>error_event</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>reason</span>: <span class='ident'>ErrorCode</span>) <span class='op'>-></span> <span class='ident'>JsonEvent</span> {
<span class='self'>self</span>.<span class='ident'>state</span> <span class='op'>=</span> <span class='ident'>ParseFinished</span>;
<span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>reason</span>, <span class='self'>self</span>.<span class='ident'>line</span>, <span class='self'>self</span>.<span class='ident'>col</span>))
}
}
<span class='doccomment'>/// A Builder consumes a json::Parser to create a generic Json structure.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Builder</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='ident'>parser</span>: <span class='ident'>Parser</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
<span class='ident'>token</span>: <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>JsonEvent</span><span class='op'>></span>,
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>T</span>: <span class='ident'>Iterator</span><span class='op'><</span><span class='ident'>Item</span> <span class='op'>=</span> <span class='ident'>char</span><span class='op'>>></span> <span class='ident'>Builder</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='doccomment'>/// Create a JSON Builder.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>src</span>: <span class='ident'>T</span>) <span class='op'>-></span> <span class='ident'>Builder</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='ident'>Builder</span> { <span class='ident'>parser</span>: <span class='ident'>Parser</span>::<span class='ident'>new</span>(<span class='ident'>src</span>), <span class='ident'>token</span>: <span class='prelude-val'>None</span>, }
}
<span class='comment'>// Decode a Json value from a Parser.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>build</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>Json</span>, <span class='ident'>BuilderError</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='kw'>let</span> <span class='ident'>result</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>build_value</span>();
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>token</span>.<span class='ident'>take</span>() {
<span class='prelude-val'>None</span> <span class='op'>=></span> {}
<span class='prelude-val'>Some</span>(<span class='ident'>Error</span>(<span class='ident'>e</span>)) <span class='op'>=></span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>e</span>); }
_ <span class='op'>=></span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='self'>self</span>.<span class='ident'>parser</span>.<span class='ident'>line</span>, <span class='self'>self</span>.<span class='ident'>parser</span>.<span class='ident'>col</span>)); }
}
<span class='ident'>result</span>
}
<span class='kw'>fn</span> <span class='ident'>bump</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) {
<span class='self'>self</span>.<span class='ident'>token</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>parser</span>.<span class='ident'>next</span>();
}
<span class='kw'>fn</span> <span class='ident'>build_value</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>Json</span>, <span class='ident'>BuilderError</span><span class='op'>></span> {
<span class='kw'>return</span> <span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>token</span>.<span class='ident'>take</span>() {
<span class='prelude-val'>Some</span>(<span class='ident'>NullValue</span>) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>Json</span>::<span class='ident'>Null</span>),
<span class='prelude-val'>Some</span>(<span class='ident'>I64Value</span>(<span class='ident'>n</span>)) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>Json</span>::<span class='ident'>I64</span>(<span class='ident'>n</span>)),
<span class='prelude-val'>Some</span>(<span class='ident'>U64Value</span>(<span class='ident'>n</span>)) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>Json</span>::<span class='ident'>U64</span>(<span class='ident'>n</span>)),
<span class='prelude-val'>Some</span>(<span class='ident'>F64Value</span>(<span class='ident'>n</span>)) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>Json</span>::<span class='ident'>F64</span>(<span class='ident'>n</span>)),
<span class='prelude-val'>Some</span>(<span class='ident'>BooleanValue</span>(<span class='ident'>b</span>)) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>Json</span>::<span class='ident'>Boolean</span>(<span class='ident'>b</span>)),
<span class='prelude-val'>Some</span>(<span class='ident'>StringValue</span>(<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>s</span>)) <span class='op'>=></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>temp</span> <span class='op'>=</span> <span class='ident'>string</span>::<span class='ident'>String</span>::<span class='ident'>new</span>();
<span class='ident'>swap</span>(<span class='ident'>s</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>temp</span>);
<span class='prelude-val'>Ok</span>(<span class='ident'>Json</span>::<span class='ident'>String</span>(<span class='ident'>temp</span>))
}
<span class='prelude-val'>Some</span>(<span class='ident'>Error</span>(<span class='ident'>e</span>)) <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>e</span>),
<span class='prelude-val'>Some</span>(<span class='ident'>ArrayStart</span>) <span class='op'>=></span> <span class='self'>self</span>.<span class='ident'>build_array</span>(),
<span class='prelude-val'>Some</span>(<span class='ident'>ObjectStart</span>) <span class='op'>=></span> <span class='self'>self</span>.<span class='ident'>build_object</span>(),
<span class='prelude-val'>Some</span>(<span class='ident'>ObjectEnd</span>) <span class='op'>=></span> <span class='self'>self</span>.<span class='ident'>parser</span>.<span class='ident'>error</span>(<span class='ident'>InvalidSyntax</span>),
<span class='prelude-val'>Some</span>(<span class='ident'>ArrayEnd</span>) <span class='op'>=></span> <span class='self'>self</span>.<span class='ident'>parser</span>.<span class='ident'>error</span>(<span class='ident'>InvalidSyntax</span>),
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='self'>self</span>.<span class='ident'>parser</span>.<span class='ident'>error</span>(<span class='ident'>EOFWhileParsingValue</span>),
}
}
<span class='kw'>fn</span> <span class='ident'>build_array</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>Json</span>, <span class='ident'>BuilderError</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>values</span> <span class='op'>=</span> <span class='ident'>Vec</span>::<span class='ident'>new</span>();
<span class='kw'>loop</span> {
<span class='kw'>if</span> <span class='kw'>let</span> <span class='prelude-val'>Some</span>(<span class='ident'>ArrayEnd</span>) <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>token</span> {
<span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>Json</span>::<span class='ident'>Array</span>(<span class='ident'>values</span>.<span class='ident'>into_iter</span>().<span class='ident'>collect</span>()));
}
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>build_value</span>() {
<span class='prelude-val'>Ok</span>(<span class='ident'>v</span>) <span class='op'>=></span> <span class='ident'>values</span>.<span class='ident'>push</span>(<span class='ident'>v</span>),
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>e</span>) }
}
<span class='self'>self</span>.<span class='ident'>bump</span>();
}
}
<span class='kw'>fn</span> <span class='ident'>build_object</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>Json</span>, <span class='ident'>BuilderError</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>bump</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>values</span> <span class='op'>=</span> <span class='ident'>BTreeMap</span>::<span class='ident'>new</span>();
<span class='kw'>loop</span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>token</span>.<span class='ident'>take</span>() {
<span class='prelude-val'>Some</span>(<span class='ident'>ObjectEnd</span>) <span class='op'>=></span> { <span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='ident'>values</span>)); }
<span class='prelude-val'>Some</span>(<span class='ident'>Error</span>(<span class='ident'>e</span>)) <span class='op'>=></span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>e</span>); }
<span class='prelude-val'>None</span> <span class='op'>=></span> { <span class='kw'>break</span>; }
<span class='ident'>token</span> <span class='op'>=></span> { <span class='self'>self</span>.<span class='ident'>token</span> <span class='op'>=</span> <span class='ident'>token</span>; }
}
<span class='kw'>let</span> <span class='ident'>key</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>parser</span>.<span class='ident'>stack</span>().<span class='ident'>top</span>() {
<span class='prelude-val'>Some</span>(<span class='ident'>StackElement</span>::<span class='ident'>Key</span>(<span class='ident'>k</span>)) <span class='op'>=></span> { <span class='ident'>k</span>.<span class='ident'>to_string</span>() }
_ <span class='op'>=></span> { <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"invalid state"</span>); }
};
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>build_value</span>() {
<span class='prelude-val'>Ok</span>(<span class='ident'>value</span>) <span class='op'>=></span> { <span class='ident'>values</span>.<span class='ident'>insert</span>(<span class='ident'>key</span>, <span class='ident'>value</span>); }
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>e</span>); }
}
<span class='self'>self</span>.<span class='ident'>bump</span>();
}
<span class='kw'>return</span> <span class='self'>self</span>.<span class='ident'>parser</span>.<span class='ident'>error</span>(<span class='ident'>EOFWhileParsingObject</span>);
}
}
<span class='doccomment'>/// A structure to decode JSON to values in rust.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Decoder</span> {
<span class='ident'>stack</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>Json</span><span class='op'>></span>,
}
<span class='kw'>impl</span> <span class='ident'>Decoder</span> {
<span class='doccomment'>/// Creates a new decoder instance for decoding the specified JSON value.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>(<span class='ident'>json</span>: <span class='ident'>Json</span>) <span class='op'>-></span> <span class='ident'>Decoder</span> {
<span class='ident'>Decoder</span> { <span class='ident'>stack</span>: <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>json</span>] }
}
}
<span class='kw'>impl</span> <span class='ident'>Decoder</span> {
<span class='kw'>fn</span> <span class='ident'>pop</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>Json</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>pop</span>() {
<span class='prelude-val'>Some</span>(<span class='ident'>s</span>) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>s</span>),
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>EOF</span>),
}
}
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>expect</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>e</span>:<span class='ident'>expr</span>, <span class='ident'>Null</span>) <span class='op'>=></span> ({
<span class='kw'>match</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>e</span>) {
<span class='ident'>Json</span>::<span class='ident'>Null</span> <span class='op'>=></span> <span class='prelude-val'>Ok</span>(()),
<span class='ident'>other</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"Null"</span>.<span class='ident'>to_string</span>(),
<span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='ident'>other</span>)))
}
});
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>e</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span>:<span class='ident'>ident</span>) <span class='op'>=></span> ({
<span class='kw'>match</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>e</span>) {
<span class='ident'>Json</span>::<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span>(<span class='ident'>v</span>) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>v</span>),
<span class='ident'>other</span> <span class='op'>=></span> {
<span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='macro'>stringify</span><span class='macro'>!</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span>).<span class='ident'>to_string</span>(),
<span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='ident'>other</span>)))
}
}
})
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>read_primitive</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>:<span class='ident'>ident</span>) <span class='op'>=></span> {
<span class='attribute'>#[<span class='ident'>allow</span>(<span class='ident'>unused_comparisons</span>)]</span>
<span class='kw'>fn</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>()) {
<span class='ident'>Json</span>::<span class='ident'>I64</span>(<span class='ident'>i</span>) <span class='op'>=></span> {
<span class='kw'>let</span> <span class='ident'>other</span> <span class='op'>=</span> <span class='ident'>i</span> <span class='kw'>as</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>;
<span class='kw'>if</span> <span class='ident'>i</span> <span class='op'>==</span> <span class='ident'>other</span> <span class='kw'>as</span> <span class='ident'>i64</span> <span class='op'>&&</span> (<span class='ident'>other</span> <span class='op'>></span> <span class='number'>0</span>) <span class='op'>==</span> (<span class='ident'>i</span> <span class='op'>></span> <span class='number'>0</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>other</span>)
} <span class='kw'>else</span> {
<span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"Number"</span>.<span class='ident'>to_string</span>(), <span class='ident'>i</span>.<span class='ident'>to_string</span>()))
}
}
<span class='ident'>Json</span>::<span class='ident'>U64</span>(<span class='ident'>u</span>) <span class='op'>=></span> {
<span class='kw'>let</span> <span class='ident'>other</span> <span class='op'>=</span> <span class='ident'>u</span> <span class='kw'>as</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>;
<span class='kw'>if</span> <span class='ident'>u</span> <span class='op'>==</span> <span class='ident'>other</span> <span class='kw'>as</span> <span class='ident'>u64</span> <span class='op'>&&</span> <span class='ident'>other</span> <span class='op'>>=</span> <span class='number'>0</span> {
<span class='prelude-val'>Ok</span>(<span class='ident'>other</span>)
} <span class='kw'>else</span> {
<span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"Number"</span>.<span class='ident'>to_string</span>(), <span class='ident'>u</span>.<span class='ident'>to_string</span>()))
}
}
<span class='ident'>Json</span>::<span class='ident'>F64</span>(<span class='ident'>f</span>) <span class='op'>=></span> {
<span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"Integer"</span>.<span class='ident'>to_string</span>(), <span class='ident'>f</span>.<span class='ident'>to_string</span>()))
}
<span class='comment'>// re: #12967.. a type w/ numeric keys (ie HashMap<usize, V> etc)</span>
<span class='comment'>// is going to have a string here, as per JSON spec.</span>
<span class='ident'>Json</span>::<span class='ident'>String</span>(<span class='ident'>s</span>) <span class='op'>=></span> <span class='kw'>match</span> <span class='ident'>s</span>.<span class='ident'>parse</span>() {
<span class='prelude-val'>Ok</span>(<span class='ident'>f</span>) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>f</span>),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"Number"</span>.<span class='ident'>to_string</span>(), <span class='ident'>s</span>)),
},
<span class='ident'>value</span> <span class='op'>=></span> {
<span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"Number"</span>.<span class='ident'>to_string</span>(), <span class='ident'>value</span>.<span class='ident'>to_string</span>()))
}
}
}
}
}
<span class='kw'>impl</span> ::<span class='ident'>Decoder</span> <span class='kw'>for</span> <span class='ident'>Decoder</span> {
<span class='kw'>type</span> <span class='ident'>Error</span> <span class='op'>=</span> <span class='ident'>DecoderError</span>;
<span class='kw'>fn</span> <span class='ident'>read_nil</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span>()<span class='op'>></span> {
<span class='macro'>expect</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>(), <span class='ident'>Null</span>)
}
<span class='macro'>read_primitive</span><span class='macro'>!</span> { <span class='ident'>read_usize</span>, <span class='ident'>usize</span> }
<span class='macro'>read_primitive</span><span class='macro'>!</span> { <span class='ident'>read_u8</span>, <span class='ident'>u8</span> }
<span class='macro'>read_primitive</span><span class='macro'>!</span> { <span class='ident'>read_u16</span>, <span class='ident'>u16</span> }
<span class='macro'>read_primitive</span><span class='macro'>!</span> { <span class='ident'>read_u32</span>, <span class='ident'>u32</span> }
<span class='macro'>read_primitive</span><span class='macro'>!</span> { <span class='ident'>read_u64</span>, <span class='ident'>u64</span> }
<span class='macro'>read_primitive</span><span class='macro'>!</span> { <span class='ident'>read_isize</span>, <span class='ident'>isize</span> }
<span class='macro'>read_primitive</span><span class='macro'>!</span> { <span class='ident'>read_i8</span>, <span class='ident'>i8</span> }
<span class='macro'>read_primitive</span><span class='macro'>!</span> { <span class='ident'>read_i16</span>, <span class='ident'>i16</span> }
<span class='macro'>read_primitive</span><span class='macro'>!</span> { <span class='ident'>read_i32</span>, <span class='ident'>i32</span> }
<span class='macro'>read_primitive</span><span class='macro'>!</span> { <span class='ident'>read_i64</span>, <span class='ident'>i64</span> }
<span class='kw'>fn</span> <span class='ident'>read_f32</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>f32</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>read_f64</span>().<span class='ident'>map</span>(<span class='op'>|</span><span class='ident'>x</span><span class='op'>|</span> <span class='ident'>x</span> <span class='kw'>as</span> <span class='ident'>f32</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_f64</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>f64</span><span class='op'>></span> {
<span class='kw'>match</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>()) {
<span class='ident'>Json</span>::<span class='ident'>I64</span>(<span class='ident'>f</span>) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>f</span> <span class='kw'>as</span> <span class='ident'>f64</span>),
<span class='ident'>Json</span>::<span class='ident'>U64</span>(<span class='ident'>f</span>) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>f</span> <span class='kw'>as</span> <span class='ident'>f64</span>),
<span class='ident'>Json</span>::<span class='ident'>F64</span>(<span class='ident'>f</span>) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>f</span>),
<span class='ident'>Json</span>::<span class='ident'>String</span>(<span class='ident'>s</span>) <span class='op'>=></span> {
<span class='comment'>// re: #12967.. a type w/ numeric keys (ie HashMap<usize, V> etc)</span>
<span class='comment'>// is going to have a string here, as per JSON spec.</span>
<span class='kw'>match</span> <span class='ident'>s</span>.<span class='ident'>parse</span>() {
<span class='prelude-val'>Ok</span>(<span class='ident'>f</span>) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>f</span>),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"Number"</span>.<span class='ident'>to_string</span>(), <span class='ident'>s</span>)),
}
},
<span class='ident'>Json</span>::<span class='ident'>Null</span> <span class='op'>=></span> <span class='prelude-val'>Ok</span>(<span class='ident'>f64</span>::<span class='ident'>NAN</span>),
<span class='ident'>value</span> <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"Number"</span>.<span class='ident'>to_string</span>(), <span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='ident'>value</span>)))
}
}
<span class='kw'>fn</span> <span class='ident'>read_bool</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>bool</span><span class='op'>></span> {
<span class='macro'>expect</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>(), <span class='ident'>Boolean</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_char</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>char</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>read_str</span>());
{
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>it</span> <span class='op'>=</span> <span class='ident'>s</span>.<span class='ident'>chars</span>();
<span class='kw'>match</span> (<span class='ident'>it</span>.<span class='ident'>next</span>(), <span class='ident'>it</span>.<span class='ident'>next</span>()) {
<span class='comment'>// exactly one character</span>
(<span class='prelude-val'>Some</span>(<span class='ident'>c</span>), <span class='prelude-val'>None</span>) <span class='op'>=></span> <span class='kw'>return</span> <span class='prelude-val'>Ok</span>(<span class='ident'>c</span>),
_ <span class='op'>=></span> ()
}
}
<span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"single character string"</span>.<span class='ident'>to_string</span>(), <span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='ident'>s</span>)))
}
<span class='kw'>fn</span> <span class='ident'>read_str</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span><span class='op'>></span> {
<span class='macro'>expect</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>(), <span class='ident'>String</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_enum</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>_name</span>: <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_enum_variant</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>names</span>: <span class='kw-2'>&</span>[<span class='kw-2'>&</span><span class='ident'>str</span>],
<span class='kw-2'>mut</span> <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>
<span class='kw'>where</span> <span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>, <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='kw'>let</span> <span class='ident'>name</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>()) {
<span class='ident'>Json</span>::<span class='ident'>String</span>(<span class='ident'>s</span>) <span class='op'>=></span> <span class='ident'>s</span>,
<span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='kw-2'>mut</span> <span class='ident'>o</span>) <span class='op'>=></span> {
<span class='kw'>let</span> <span class='ident'>n</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>o</span>.<span class='ident'>remove</span>(<span class='kw-2'>&</span><span class='string'>"variant"</span>.<span class='ident'>to_string</span>()) {
<span class='prelude-val'>Some</span>(<span class='ident'>Json</span>::<span class='ident'>String</span>(<span class='ident'>s</span>)) <span class='op'>=></span> <span class='ident'>s</span>,
<span class='prelude-val'>Some</span>(<span class='ident'>val</span>) <span class='op'>=></span> {
<span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"String"</span>.<span class='ident'>to_string</span>(), <span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='ident'>val</span>)))
}
<span class='prelude-val'>None</span> <span class='op'>=></span> {
<span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>MissingFieldError</span>(<span class='string'>"variant"</span>.<span class='ident'>to_string</span>()))
}
};
<span class='kw'>match</span> <span class='ident'>o</span>.<span class='ident'>remove</span>(<span class='kw-2'>&</span><span class='string'>"fields"</span>.<span class='ident'>to_string</span>()) {
<span class='prelude-val'>Some</span>(<span class='ident'>Json</span>::<span class='ident'>Array</span>(<span class='ident'>l</span>)) <span class='op'>=></span> {
<span class='kw'>for</span> <span class='ident'>field</span> <span class='kw'>in</span> <span class='ident'>l</span>.<span class='ident'>into_iter</span>().<span class='ident'>rev</span>() {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push</span>(<span class='ident'>field</span>);
}
},
<span class='prelude-val'>Some</span>(<span class='ident'>val</span>) <span class='op'>=></span> {
<span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"Array"</span>.<span class='ident'>to_string</span>(), <span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='ident'>val</span>)))
}
<span class='prelude-val'>None</span> <span class='op'>=></span> {
<span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>MissingFieldError</span>(<span class='string'>"fields"</span>.<span class='ident'>to_string</span>()))
}
}
<span class='ident'>n</span>
}
<span class='ident'>json</span> <span class='op'>=></span> {
<span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"String or Object"</span>.<span class='ident'>to_string</span>(), <span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='ident'>json</span>)))
}
};
<span class='kw'>let</span> <span class='ident'>idx</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>names</span>.<span class='ident'>iter</span>().<span class='ident'>position</span>(<span class='op'>|</span><span class='ident'>n</span><span class='op'>|</span> <span class='kw-2'>*</span><span class='ident'>n</span> <span class='op'>==</span> <span class='ident'>name</span>) {
<span class='prelude-val'>Some</span>(<span class='ident'>idx</span>) <span class='op'>=></span> <span class='ident'>idx</span>,
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>UnknownVariantError</span>(<span class='ident'>name</span>))
};
<span class='ident'>f</span>(<span class='self'>self</span>, <span class='ident'>idx</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_enum_variant_arg</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>_idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_enum_struct_variant</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>names</span>: <span class='kw-2'>&</span>[<span class='kw-2'>&</span><span class='ident'>str</span>], <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>, <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='self'>self</span>.<span class='ident'>read_enum_variant</span>(<span class='ident'>names</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_enum_struct_variant_field</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>,
<span class='ident'>_name</span>: <span class='kw-2'>&</span><span class='ident'>str</span>,
<span class='ident'>idx</span>: <span class='ident'>usize</span>,
<span class='ident'>f</span>: <span class='ident'>F</span>)
<span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='self'>self</span>.<span class='ident'>read_enum_variant_arg</span>(<span class='ident'>idx</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_struct</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>_name</span>: <span class='kw-2'>&</span><span class='ident'>str</span>, <span class='ident'>_len</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='kw'>let</span> <span class='ident'>value</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>f</span>(<span class='self'>self</span>));
<span class='macro'>try</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>());
<span class='prelude-val'>Ok</span>(<span class='ident'>value</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_struct_field</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>,
<span class='ident'>name</span>: <span class='kw-2'>&</span><span class='ident'>str</span>,
<span class='ident'>_idx</span>: <span class='ident'>usize</span>,
<span class='ident'>f</span>: <span class='ident'>F</span>)
<span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>obj</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>expect</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>(), <span class='ident'>Object</span>));
<span class='kw'>let</span> <span class='ident'>value</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>obj</span>.<span class='ident'>remove</span>(<span class='kw-2'>&</span><span class='ident'>name</span>.<span class='ident'>to_string</span>()) {
<span class='prelude-val'>None</span> <span class='op'>=></span> {
<span class='comment'>// Add a Null and try to parse it as an Option<_></span>
<span class='comment'>// to get None as a default value.</span>
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push</span>(<span class='ident'>Json</span>::<span class='ident'>Null</span>);
<span class='kw'>match</span> <span class='ident'>f</span>(<span class='self'>self</span>) {
<span class='prelude-val'>Ok</span>(<span class='ident'>x</span>) <span class='op'>=></span> <span class='ident'>x</span>,
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>MissingFieldError</span>(<span class='ident'>name</span>.<span class='ident'>to_string</span>())),
}
},
<span class='prelude-val'>Some</span>(<span class='ident'>json</span>) <span class='op'>=></span> {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push</span>(<span class='ident'>json</span>);
<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>f</span>(<span class='self'>self</span>))
}
};
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push</span>(<span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='ident'>obj</span>));
<span class='prelude-val'>Ok</span>(<span class='ident'>value</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_tuple</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>tuple_len</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='self'>self</span>.<span class='ident'>read_seq</span>(<span class='kw'>move</span> <span class='op'>|</span><span class='ident'>d</span>, <span class='ident'>len</span><span class='op'>|</span> {
<span class='kw'>if</span> <span class='ident'>len</span> <span class='op'>==</span> <span class='ident'>tuple_len</span> {
<span class='ident'>f</span>(<span class='ident'>d</span>)
} <span class='kw'>else</span> {
<span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"Tuple{}"</span>, <span class='ident'>tuple_len</span>), <span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"Tuple{}"</span>, <span class='ident'>len</span>)))
}
})
}
<span class='kw'>fn</span> <span class='ident'>read_tuple_arg</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='self'>self</span>.<span class='ident'>read_seq_elt</span>(<span class='ident'>idx</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_tuple_struct</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>,
<span class='ident'>_name</span>: <span class='kw-2'>&</span><span class='ident'>str</span>,
<span class='ident'>len</span>: <span class='ident'>usize</span>,
<span class='ident'>f</span>: <span class='ident'>F</span>)
<span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='self'>self</span>.<span class='ident'>read_tuple</span>(<span class='ident'>len</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_tuple_struct_arg</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>,
<span class='ident'>idx</span>: <span class='ident'>usize</span>,
<span class='ident'>f</span>: <span class='ident'>F</span>)
<span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='self'>self</span>.<span class='ident'>read_tuple_arg</span>(<span class='ident'>idx</span>, <span class='ident'>f</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_option</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='kw-2'>mut</span> <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnMut</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>, <span class='ident'>bool</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='kw'>match</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>()) {
<span class='ident'>Json</span>::<span class='ident'>Null</span> <span class='op'>=></span> <span class='ident'>f</span>(<span class='self'>self</span>, <span class='bool-val'>false</span>),
<span class='ident'>value</span> <span class='op'>=></span> { <span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push</span>(<span class='ident'>value</span>); <span class='ident'>f</span>(<span class='self'>self</span>, <span class='bool-val'>true</span>) }
}
}
<span class='kw'>fn</span> <span class='ident'>read_seq</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>, <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='kw'>let</span> <span class='ident'>array</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>expect</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>(), <span class='ident'>Array</span>));
<span class='kw'>let</span> <span class='ident'>len</span> <span class='op'>=</span> <span class='ident'>array</span>.<span class='ident'>len</span>();
<span class='kw'>for</span> <span class='ident'>v</span> <span class='kw'>in</span> <span class='ident'>array</span>.<span class='ident'>into_iter</span>().<span class='ident'>rev</span>() {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push</span>(<span class='ident'>v</span>);
}
<span class='ident'>f</span>(<span class='self'>self</span>, <span class='ident'>len</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_seq_elt</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>_idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_map</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>, <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='kw'>let</span> <span class='ident'>obj</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>expect</span><span class='macro'>!</span>(<span class='self'>self</span>.<span class='ident'>pop</span>(), <span class='ident'>Object</span>));
<span class='kw'>let</span> <span class='ident'>len</span> <span class='op'>=</span> <span class='ident'>obj</span>.<span class='ident'>len</span>();
<span class='kw'>for</span> (<span class='ident'>key</span>, <span class='ident'>value</span>) <span class='kw'>in</span> <span class='ident'>obj</span>.<span class='ident'>into_iter</span>() {
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push</span>(<span class='ident'>value</span>);
<span class='self'>self</span>.<span class='ident'>stack</span>.<span class='ident'>push</span>(<span class='ident'>Json</span>::<span class='ident'>String</span>(<span class='ident'>key</span>));
}
<span class='ident'>f</span>(<span class='self'>self</span>, <span class='ident'>len</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_map_elt_key</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>_idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>read_map_elt_val</span><span class='op'><</span><span class='ident'>T</span>, <span class='ident'>F</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>_idx</span>: <span class='ident'>usize</span>, <span class='ident'>f</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='kw'>where</span>
<span class='ident'>F</span>: <span class='ident'>FnOnce</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>) <span class='op'>-></span> <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>,
{
<span class='ident'>f</span>(<span class='self'>self</span>)
}
<span class='kw'>fn</span> <span class='ident'>error</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>err</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='ident'>DecoderError</span> {
<span class='ident'>ApplicationError</span>(<span class='ident'>err</span>.<span class='ident'>to_string</span>())
}
}
<span class='doccomment'>/// A trait for converting values to JSON</span>
<span class='kw'>pub</span> <span class='kw'>trait</span> <span class='ident'>ToJson</span> {
<span class='doccomment'>/// Converts the value of `self` to an instance of JSON</span>
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span>;
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>to_json_impl_i64</span> {
($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span>:<span class='ident'>ty</span>), <span class='op'>+</span>) <span class='op'>=></span> (
$(<span class='kw'>impl</span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> { <span class='ident'>Json</span>::<span class='ident'>I64</span>(<span class='kw-2'>*</span><span class='self'>self</span> <span class='kw'>as</span> <span class='ident'>i64</span>) }
})<span class='op'>+</span>
)
}
<span class='macro'>to_json_impl_i64</span><span class='macro'>!</span> { <span class='ident'>isize</span>, <span class='ident'>i8</span>, <span class='ident'>i16</span>, <span class='ident'>i32</span>, <span class='ident'>i64</span> }
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>to_json_impl_u64</span> {
($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span>:<span class='ident'>ty</span>), <span class='op'>+</span>) <span class='op'>=></span> (
$(<span class='kw'>impl</span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>t</span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> { <span class='ident'>Json</span>::<span class='ident'>U64</span>(<span class='kw-2'>*</span><span class='self'>self</span> <span class='kw'>as</span> <span class='ident'>u64</span>) }
})<span class='op'>+</span>
)
}
<span class='macro'>to_json_impl_u64</span><span class='macro'>!</span> { <span class='ident'>usize</span>, <span class='ident'>u8</span>, <span class='ident'>u16</span>, <span class='ident'>u32</span>, <span class='ident'>u64</span> }
<span class='kw'>impl</span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='ident'>Json</span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> { <span class='self'>self</span>.<span class='ident'>clone</span>() }
}
<span class='kw'>impl</span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='ident'>f32</span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> { (<span class='kw-2'>*</span><span class='self'>self</span> <span class='kw'>as</span> <span class='ident'>f64</span>).<span class='ident'>to_json</span>() }
}
<span class='kw'>impl</span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='ident'>f64</span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>num</span>::<span class='ident'>FpCategory</span>::{<span class='ident'>Nan</span>, <span class='ident'>Infinite</span>};
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>classify</span>() {
<span class='ident'>Nan</span> <span class='op'>|</span> <span class='ident'>Infinite</span> <span class='op'>=></span> <span class='ident'>Json</span>::<span class='ident'>Null</span>,
_ <span class='op'>=></span> <span class='ident'>Json</span>::<span class='ident'>F64</span>(<span class='kw-2'>*</span><span class='self'>self</span>)
}
}
}
<span class='kw'>impl</span> <span class='ident'>ToJson</span> <span class='kw'>for</span> () {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> { <span class='ident'>Json</span>::<span class='ident'>Null</span> }
}
<span class='kw'>impl</span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='ident'>bool</span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> { <span class='ident'>Json</span>::<span class='ident'>Boolean</span>(<span class='kw-2'>*</span><span class='self'>self</span>) }
}
<span class='kw'>impl</span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='ident'>str</span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> { <span class='ident'>Json</span>::<span class='ident'>String</span>(<span class='self'>self</span>.<span class='ident'>to_string</span>()) }
}
<span class='kw'>impl</span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='ident'>string</span>::<span class='ident'>String</span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> { <span class='ident'>Json</span>::<span class='ident'>String</span>((<span class='kw-2'>*</span><span class='self'>self</span>).<span class='ident'>clone</span>()) }
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>tuple_impl</span> {
<span class='comment'>// use variables to indicate the arity of the tuple</span>
($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tyvar</span>:<span class='ident'>ident</span>),<span class='op'>*</span> ) <span class='op'>=></span> {
<span class='comment'>// the trailing commas are for the 1 tuple</span>
<span class='kw'>impl</span><span class='op'><</span>
$( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tyvar</span> : <span class='ident'>ToJson</span> ),<span class='op'>*</span>
<span class='op'>></span> <span class='ident'>ToJson</span> <span class='kw'>for</span> ( $( <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tyvar</span> ),<span class='op'>*</span> , ) {
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='attribute'>#[<span class='ident'>allow</span>(<span class='ident'>non_snake_case</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
($(<span class='kw-2'>ref</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tyvar</span>),<span class='kw-2'>*</span>,) <span class='op'>=></span> <span class='ident'>Json</span>::<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>tyvar</span>.<span class='ident'>to_json</span>()),<span class='kw-2'>*</span>])
}
}
}
}
}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>, <span class='ident'>C</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>, <span class='ident'>C</span>, <span class='ident'>D</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>, <span class='ident'>C</span>, <span class='ident'>D</span>, <span class='ident'>E</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>, <span class='ident'>C</span>, <span class='ident'>D</span>, <span class='ident'>E</span>, <span class='ident'>F</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>, <span class='ident'>C</span>, <span class='ident'>D</span>, <span class='ident'>E</span>, <span class='ident'>F</span>, <span class='ident'>G</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>, <span class='ident'>C</span>, <span class='ident'>D</span>, <span class='ident'>E</span>, <span class='ident'>F</span>, <span class='ident'>G</span>, <span class='ident'>H</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>, <span class='ident'>C</span>, <span class='ident'>D</span>, <span class='ident'>E</span>, <span class='ident'>F</span>, <span class='ident'>G</span>, <span class='ident'>H</span>, <span class='ident'>I</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>, <span class='ident'>C</span>, <span class='ident'>D</span>, <span class='ident'>E</span>, <span class='ident'>F</span>, <span class='ident'>G</span>, <span class='ident'>H</span>, <span class='ident'>I</span>, <span class='ident'>J</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>, <span class='ident'>C</span>, <span class='ident'>D</span>, <span class='ident'>E</span>, <span class='ident'>F</span>, <span class='ident'>G</span>, <span class='ident'>H</span>, <span class='ident'>I</span>, <span class='ident'>J</span>, <span class='ident'>K</span>}
<span class='macro'>tuple_impl</span><span class='macro'>!</span>{<span class='ident'>A</span>, <span class='ident'>B</span>, <span class='ident'>C</span>, <span class='ident'>D</span>, <span class='ident'>E</span>, <span class='ident'>F</span>, <span class='ident'>G</span>, <span class='ident'>H</span>, <span class='ident'>I</span>, <span class='ident'>J</span>, <span class='ident'>K</span>, <span class='ident'>L</span>}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>A</span>: <span class='ident'>ToJson</span><span class='op'>></span> <span class='ident'>ToJson</span> <span class='kw'>for</span> [<span class='ident'>A</span>] {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> { <span class='ident'>Json</span>::<span class='ident'>Array</span>(<span class='self'>self</span>.<span class='ident'>iter</span>().<span class='ident'>map</span>(<span class='op'>|</span><span class='ident'>elt</span><span class='op'>|</span> <span class='ident'>elt</span>.<span class='ident'>to_json</span>()).<span class='ident'>collect</span>()) }
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>A</span>: <span class='ident'>ToJson</span><span class='op'>></span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> { <span class='ident'>Json</span>::<span class='ident'>Array</span>(<span class='self'>self</span>.<span class='ident'>iter</span>().<span class='ident'>map</span>(<span class='op'>|</span><span class='ident'>elt</span><span class='op'>|</span> <span class='ident'>elt</span>.<span class='ident'>to_json</span>()).<span class='ident'>collect</span>()) }
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>A</span>: <span class='ident'>ToJson</span><span class='op'>></span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='ident'>BTreeMap</span><span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span>, <span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>d</span> <span class='op'>=</span> <span class='ident'>BTreeMap</span>::<span class='ident'>new</span>();
<span class='kw'>for</span> (<span class='ident'>key</span>, <span class='ident'>value</span>) <span class='kw'>in</span> <span class='self'>self</span>.<span class='ident'>iter</span>() {
<span class='ident'>d</span>.<span class='ident'>insert</span>((<span class='kw-2'>*</span><span class='ident'>key</span>).<span class='ident'>clone</span>(), <span class='ident'>value</span>.<span class='ident'>to_json</span>());
}
<span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='ident'>d</span>)
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>A</span>: <span class='ident'>ToJson</span><span class='op'>></span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='ident'>HashMap</span><span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span>, <span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>d</span> <span class='op'>=</span> <span class='ident'>BTreeMap</span>::<span class='ident'>new</span>();
<span class='kw'>for</span> (<span class='ident'>key</span>, <span class='ident'>value</span>) <span class='kw'>in</span> <span class='self'>self</span>.<span class='ident'>iter</span>() {
<span class='ident'>d</span>.<span class='ident'>insert</span>((<span class='kw-2'>*</span><span class='ident'>key</span>).<span class='ident'>clone</span>(), <span class='ident'>value</span>.<span class='ident'>to_json</span>());
}
<span class='ident'>Json</span>::<span class='ident'>Object</span>(<span class='ident'>d</span>)
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>A</span>:<span class='ident'>ToJson</span><span class='op'>></span> <span class='ident'>ToJson</span> <span class='kw'>for</span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>to_json</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Json</span> {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='self'>self</span> {
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='ident'>Json</span>::<span class='ident'>Null</span>,
<span class='prelude-val'>Some</span>(<span class='kw-2'>ref</span> <span class='ident'>value</span>) <span class='op'>=></span> <span class='ident'>value</span>.<span class='ident'>to_json</span>()
}
}
}
<span class='kw'>struct</span> <span class='ident'>FormatShim</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='lifetime'>'b</span>: <span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>inner</span>: <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span><span class='op'><</span><span class='lifetime'>'b</span><span class='op'>></span>,
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='lifetime'>'b</span><span class='op'>></span> <span class='ident'>fmt</span>::<span class='ident'>Write</span> <span class='kw'>for</span> <span class='ident'>FormatShim</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='lifetime'>'b</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>write_str</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>s</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>inner</span>.<span class='ident'>write_str</span>(<span class='ident'>s</span>) {
<span class='prelude-val'>Ok</span>(_) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(()),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>fmt</span>::<span class='ident'>Error</span>)
}
}
}
<span class='kw'>impl</span> <span class='ident'>fmt</span>::<span class='ident'>Display</span> <span class='kw'>for</span> <span class='ident'>Json</span> {
<span class='doccomment'>/// Encodes a json value into a string</span>
<span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>shim</span> <span class='op'>=</span> <span class='ident'>FormatShim</span> { <span class='ident'>inner</span>: <span class='ident'>f</span> };
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>encoder</span> <span class='op'>=</span> <span class='ident'>Encoder</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>shim</span>);
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>encode</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>encoder</span>) {
<span class='prelude-val'>Ok</span>(_) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(()),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>fmt</span>::<span class='ident'>Error</span>)
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> <span class='ident'>fmt</span>::<span class='ident'>Display</span> <span class='kw'>for</span> <span class='ident'>PrettyJson</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span> {
<span class='doccomment'>/// Encodes a json value into a string</span>
<span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>shim</span> <span class='op'>=</span> <span class='ident'>FormatShim</span> { <span class='ident'>inner</span>: <span class='ident'>f</span> };
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>encoder</span> <span class='op'>=</span> <span class='ident'>Encoder</span>::<span class='ident'>new_pretty</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>shim</span>);
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>inner</span>.<span class='ident'>encode</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>encoder</span>) {
<span class='prelude-val'>Ok</span>(_) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(()),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>fmt</span>::<span class='ident'>Error</span>)
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span>: <span class='ident'>Encodable</span><span class='op'>></span> <span class='ident'>fmt</span>::<span class='ident'>Display</span> <span class='kw'>for</span> <span class='ident'>AsJson</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span> {
<span class='doccomment'>/// Encodes a json value into a string</span>
<span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>shim</span> <span class='op'>=</span> <span class='ident'>FormatShim</span> { <span class='ident'>inner</span>: <span class='ident'>f</span> };
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>encoder</span> <span class='op'>=</span> <span class='ident'>Encoder</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>shim</span>);
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>inner</span>.<span class='ident'>encode</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>encoder</span>) {
<span class='prelude-val'>Ok</span>(_) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(()),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>fmt</span>::<span class='ident'>Error</span>)
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span> <span class='ident'>AsPrettyJson</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span> {
<span class='doccomment'>/// Set the indentation level for the emitted JSON</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>indent</span>(<span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>indent</span>: <span class='ident'>u32</span>) <span class='op'>-></span> <span class='ident'>AsPrettyJson</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>indent</span> <span class='op'>=</span> <span class='prelude-val'>Some</span>(<span class='ident'>indent</span>);
<span class='self'>self</span>
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span>: <span class='ident'>Encodable</span><span class='op'>></span> <span class='ident'>fmt</span>::<span class='ident'>Display</span> <span class='kw'>for</span> <span class='ident'>AsPrettyJson</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span> {
<span class='doccomment'>/// Encodes a json value into a string</span>
<span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>shim</span> <span class='op'>=</span> <span class='ident'>FormatShim</span> { <span class='ident'>inner</span>: <span class='ident'>f</span> };
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>encoder</span> <span class='op'>=</span> <span class='ident'>Encoder</span>::<span class='ident'>new_pretty</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>shim</span>);
<span class='kw'>if</span> <span class='kw'>let</span> <span class='prelude-val'>Some</span>(<span class='ident'>n</span>) <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>indent</span> {
<span class='comment'>// unwrap cannot panic for pretty encoders</span>
<span class='kw'>let</span> _ <span class='op'>=</span> <span class='ident'>encoder</span>.<span class='ident'>set_indent</span>(<span class='ident'>n</span>);
}
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>inner</span>.<span class='ident'>encode</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>encoder</span>) {
<span class='prelude-val'>Ok</span>(_) <span class='op'>=></span> <span class='prelude-val'>Ok</span>(()),
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>fmt</span>::<span class='ident'>Error</span>)
}
}
}
<span class='kw'>impl</span> <span class='ident'>FromStr</span> <span class='kw'>for</span> <span class='ident'>Json</span> {
<span class='kw'>type</span> <span class='prelude-val'>Err</span> <span class='op'>=</span> <span class='ident'>ParserError</span>;
<span class='kw'>fn</span> <span class='ident'>from_str</span>(<span class='ident'>s</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>Json</span>, <span class='ident'>ParserError</span><span class='op'>></span> {
<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='ident'>s</span>)
}
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>test</span>)]</span>
<span class='kw'>mod</span> <span class='ident'>tests</span> {
<span class='kw'>use</span> <span class='self'>self</span>::<span class='ident'>Animal</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> {<span class='ident'>Encodable</span>, <span class='ident'>Decodable</span>};
<span class='kw'>use</span> <span class='kw'>super</span>::<span class='ident'>Json</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='kw'>super</span>::<span class='ident'>ErrorCode</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='kw'>super</span>::<span class='ident'>ParserError</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='kw'>super</span>::<span class='ident'>DecoderError</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='kw'>super</span>::<span class='ident'>JsonEvent</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='kw'>super</span>::<span class='ident'>StackElement</span>::<span class='kw-2'>*</span>;
<span class='kw'>use</span> <span class='kw'>super</span>::{<span class='ident'>Json</span>, <span class='ident'>DecodeResult</span>, <span class='ident'>DecoderError</span>, <span class='ident'>JsonEvent</span>, <span class='ident'>Parser</span>,
<span class='ident'>StackElement</span>, <span class='ident'>Stack</span>, <span class='ident'>Decoder</span>, <span class='ident'>Encoder</span>, <span class='ident'>EncoderError</span>};
<span class='kw'>use</span> <span class='ident'>std</span>::{<span class='ident'>i64</span>, <span class='ident'>u64</span>, <span class='ident'>f32</span>, <span class='ident'>f64</span>};
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::<span class='ident'>BTreeMap</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>string</span>;
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>RustcDecodable</span>, <span class='ident'>Eq</span>, <span class='ident'>PartialEq</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>OptionData</span> {
<span class='ident'>opt</span>: <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span>,
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_option_none</span>() {
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span><span class='string'>"{}"</span>;
<span class='kw'>let</span> <span class='ident'>obj</span>: <span class='ident'>OptionData</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='ident'>s</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>obj</span>, <span class='ident'>OptionData</span> { <span class='ident'>opt</span>: <span class='prelude-val'>None</span> });
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_option_some</span>() {
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='string'>"{ \"opt\": 10 }"</span>;
<span class='kw'>let</span> <span class='ident'>obj</span>: <span class='ident'>OptionData</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='ident'>s</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>obj</span>, <span class='ident'>OptionData</span> { <span class='ident'>opt</span>: <span class='prelude-val'>Some</span>(<span class='number'>10</span>) });
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_option_malformed</span>() {
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>OptionData</span><span class='op'>></span>(<span class='string'>"{ \"opt\": [] }"</span>,
<span class='ident'>ExpectedError</span>(<span class='string'>"Number"</span>.<span class='ident'>to_string</span>(), <span class='string'>"[]"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>OptionData</span><span class='op'>></span>(<span class='string'>"{ \"opt\": false }"</span>,
<span class='ident'>ExpectedError</span>(<span class='string'>"Number"</span>.<span class='ident'>to_string</span>(), <span class='string'>"false"</span>.<span class='ident'>to_string</span>()));
}
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>PartialEq</span>, <span class='ident'>RustcEncodable</span>, <span class='ident'>RustcDecodable</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>enum</span> <span class='ident'>Animal</span> {
<span class='ident'>Dog</span>,
<span class='ident'>Frog</span>(<span class='ident'>string</span>::<span class='ident'>String</span>, <span class='ident'>isize</span>)
}
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>PartialEq</span>, <span class='ident'>RustcEncodable</span>, <span class='ident'>RustcDecodable</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>Inner</span> {
<span class='ident'>a</span>: (),
<span class='ident'>b</span>: <span class='ident'>usize</span>,
<span class='ident'>c</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span><span class='op'>></span>,
}
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>PartialEq</span>, <span class='ident'>RustcEncodable</span>, <span class='ident'>RustcDecodable</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>Outer</span> {
<span class='ident'>inner</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>Inner</span><span class='op'>></span>,
}
<span class='kw'>fn</span> <span class='ident'>mk_object</span>(<span class='ident'>items</span>: <span class='kw-2'>&</span>[(<span class='ident'>string</span>::<span class='ident'>String</span>, <span class='ident'>Json</span>)]) <span class='op'>-></span> <span class='ident'>Json</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>d</span> <span class='op'>=</span> <span class='ident'>BTreeMap</span>::<span class='ident'>new</span>();
<span class='kw'>for</span> <span class='ident'>item</span> <span class='kw'>in</span> <span class='ident'>items</span>.<span class='ident'>iter</span>() {
<span class='kw'>match</span> <span class='kw-2'>*</span><span class='ident'>item</span> {
(<span class='kw-2'>ref</span> <span class='ident'>key</span>, <span class='kw-2'>ref</span> <span class='ident'>value</span>) <span class='op'>=></span> { <span class='ident'>d</span>.<span class='ident'>insert</span>((<span class='kw-2'>*</span><span class='ident'>key</span>).<span class='ident'>clone</span>(), (<span class='kw-2'>*</span><span class='ident'>value</span>).<span class='ident'>clone</span>()); },
}
};
<span class='ident'>Object</span>(<span class='ident'>d</span>)
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_from_str_trait</span>() {
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='string'>"null"</span>;
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>s</span>.<span class='ident'>parse</span>::<span class='op'><</span><span class='ident'>Json</span><span class='op'>></span>().<span class='ident'>unwrap</span>() <span class='op'>==</span> <span class='ident'>s</span>.<span class='ident'>parse</span>().<span class='ident'>unwrap</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_null</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Null</span>.<span class='ident'>to_string</span>(), <span class='string'>"null"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Null</span>.<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"null"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_i64</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>U64</span>(<span class='number'>0</span>).<span class='ident'>to_string</span>(), <span class='string'>"0"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>U64</span>(<span class='number'>0</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"0"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>U64</span>(<span class='number'>1234</span>).<span class='ident'>to_string</span>(), <span class='string'>"1234"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>U64</span>(<span class='number'>1234</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"1234"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>I64</span>(<span class='op'>-</span><span class='number'>5678</span>).<span class='ident'>to_string</span>(), <span class='string'>"-5678"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>I64</span>(<span class='op'>-</span><span class='number'>5678</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"-5678"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>U64</span>(<span class='number'>7650007200025252000</span>).<span class='ident'>to_string</span>(), <span class='string'>"7650007200025252000"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>U64</span>(<span class='number'>7650007200025252000</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"7650007200025252000"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_f64</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='number'>3.0</span>).<span class='ident'>to_string</span>(), <span class='string'>"3.0"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='number'>3.0</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"3.0"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='number'>3.1</span>).<span class='ident'>to_string</span>(), <span class='string'>"3.1"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='number'>3.1</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"3.1"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='op'>-</span><span class='number'>1.5</span>).<span class='ident'>to_string</span>(), <span class='string'>"-1.5"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='op'>-</span><span class='number'>1.5</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"-1.5"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='number'>0.5</span>).<span class='ident'>to_string</span>(), <span class='string'>"0.5"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='number'>0.5</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"0.5"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='ident'>f64</span>::<span class='ident'>NAN</span>).<span class='ident'>to_string</span>(), <span class='string'>"null"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='ident'>f64</span>::<span class='ident'>NAN</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"null"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='ident'>f64</span>::<span class='ident'>INFINITY</span>).<span class='ident'>to_string</span>(), <span class='string'>"null"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='ident'>f64</span>::<span class='ident'>INFINITY</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"null"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='ident'>f64</span>::<span class='ident'>NEG_INFINITY</span>).<span class='ident'>to_string</span>(), <span class='string'>"null"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>F64</span>(<span class='ident'>f64</span>::<span class='ident'>NEG_INFINITY</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"null"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_str</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>String</span>(<span class='string'>""</span>.<span class='ident'>to_string</span>()).<span class='ident'>to_string</span>(), <span class='string'>"\"\""</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>String</span>(<span class='string'>""</span>.<span class='ident'>to_string</span>()).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"\"\""</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>String</span>(<span class='string'>"homura"</span>.<span class='ident'>to_string</span>()).<span class='ident'>to_string</span>(), <span class='string'>"\"homura\""</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>String</span>(<span class='string'>"madoka"</span>.<span class='ident'>to_string</span>()).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"\"madoka\""</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_bool</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Boolean</span>(<span class='bool-val'>true</span>).<span class='ident'>to_string</span>(), <span class='string'>"true"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Boolean</span>(<span class='bool-val'>true</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"true"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Boolean</span>(<span class='bool-val'>false</span>).<span class='ident'>to_string</span>(), <span class='string'>"false"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Boolean</span>(<span class='bool-val'>false</span>).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"false"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_array</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[]).<span class='ident'>to_string</span>(), <span class='string'>"[]"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[]).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"[]"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Boolean</span>(<span class='bool-val'>true</span>)]).<span class='ident'>to_string</span>(), <span class='string'>"[true]"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Boolean</span>(<span class='bool-val'>true</span>)]).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(),
<span class='string'>"\
[\n \
true\n\
]"</span>
);
<span class='kw'>let</span> <span class='ident'>long_test_array</span> <span class='op'>=</span> <span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>Boolean</span>(<span class='bool-val'>false</span>),
<span class='ident'>Null</span>,
<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>String</span>(<span class='string'>"foo\nbar"</span>.<span class='ident'>to_string</span>()), <span class='ident'>F64</span>(<span class='number'>3.5</span>)])]);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>long_test_array</span>.<span class='ident'>to_string</span>(),
<span class='string'>"[false,null,[\"foo\\nbar\",3.5]]"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='ident'>long_test_array</span>.<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(),
<span class='string'>"\
[\n \
false,\n \
null,\n \
[\n \
\"foo\\nbar\",\n \
3.5\n \
]\n\
]"</span>
);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_object</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[]).<span class='ident'>to_string</span>(), <span class='string'>"{}"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[]).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(), <span class='string'>"{}"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[
(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Boolean</span>(<span class='bool-val'>true</span>))
]).<span class='ident'>to_string</span>(),
<span class='string'>"{\"a\":true}"</span>
);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Boolean</span>(<span class='bool-val'>true</span>))]).<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(),
<span class='string'>"\
{\n \
\"a\": true\n\
}"</span>
);
<span class='kw'>let</span> <span class='ident'>complex_obj</span> <span class='op'>=</span> <span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[
(<span class='string'>"b"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[(<span class='string'>"c"</span>.<span class='ident'>to_string</span>(), <span class='ident'>String</span>(<span class='string'>"\x0c\r"</span>.<span class='ident'>to_string</span>()))]),
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[(<span class='string'>"d"</span>.<span class='ident'>to_string</span>(), <span class='ident'>String</span>(<span class='string'>""</span>.<span class='ident'>to_string</span>()))])
]))
]);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='ident'>complex_obj</span>.<span class='ident'>to_string</span>(),
<span class='string'>"{\
\"b\":[\
{\"c\":\"\\f\\r\"},\
{\"d\":\"\"}\
]\
}"</span>
);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='ident'>complex_obj</span>.<span class='ident'>pretty</span>().<span class='ident'>to_string</span>(),
<span class='string'>"\
{\n \
\"b\": [\n \
{\n \
\"c\": \"\\f\\r\"\n \
},\n \
{\n \
\"d\": \"\"\n \
}\n \
]\n\
}"</span>
);
<span class='kw'>let</span> <span class='ident'>a</span> <span class='op'>=</span> <span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[
(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Boolean</span>(<span class='bool-val'>true</span>)),
(<span class='string'>"b"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[(<span class='string'>"c"</span>.<span class='ident'>to_string</span>(), <span class='ident'>String</span>(<span class='string'>"\x0c\r"</span>.<span class='ident'>to_string</span>()))]),
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[(<span class='string'>"d"</span>.<span class='ident'>to_string</span>(), <span class='ident'>String</span>(<span class='string'>""</span>.<span class='ident'>to_string</span>()))])
]))
]);
<span class='comment'>// We can't compare the strings directly because the object fields be</span>
<span class='comment'>// printed in a different order.</span>
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>clone</span>(), <span class='ident'>a</span>.<span class='ident'>to_string</span>().<span class='ident'>parse</span>().<span class='ident'>unwrap</span>());
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>clone</span>(), <span class='ident'>a</span>.<span class='ident'>pretty</span>().<span class='ident'>to_string</span>().<span class='ident'>parse</span>().<span class='ident'>unwrap</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_enum</span>() {
<span class='kw'>let</span> <span class='ident'>animal</span> <span class='op'>=</span> <span class='ident'>Dog</span>;
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='kw'>super</span>::<span class='ident'>as_json</span>(<span class='kw-2'>&</span><span class='ident'>animal</span>)),
<span class='string'>"\"Dog\""</span>
);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='kw'>super</span>::<span class='ident'>as_pretty_json</span>(<span class='kw-2'>&</span><span class='ident'>animal</span>)),
<span class='string'>"\"Dog\""</span>
);
<span class='kw'>let</span> <span class='ident'>animal</span> <span class='op'>=</span> <span class='ident'>Frog</span>(<span class='string'>"Henry"</span>.<span class='ident'>to_string</span>(), <span class='number'>349</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='kw'>super</span>::<span class='ident'>as_json</span>(<span class='kw-2'>&</span><span class='ident'>animal</span>)),
<span class='string'>"{\"variant\":\"Frog\",\"fields\":[\"Henry\",349]}"</span>
);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='kw'>super</span>::<span class='ident'>as_pretty_json</span>(<span class='kw-2'>&</span><span class='ident'>animal</span>)),
<span class='string'>"{\n \
\"variant\": \"Frog\",\n \
\"fields\": [\n \
\"Henry\",\n \
349\n \
]\n\
}"</span>
);
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>check_encoder_for_simple</span> {
(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>value</span>:<span class='ident'>expr</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>expected</span>:<span class='ident'>expr</span>) <span class='op'>=></span> ({
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='kw'>super</span>::<span class='ident'>as_json</span>(<span class='kw-2'>&</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>value</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>s</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>expected</span>);
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{}"</span>, <span class='kw'>super</span>::<span class='ident'>as_pretty_json</span>(<span class='kw-2'>&</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>value</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>s</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>expected</span>);
})
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_some</span>() {
<span class='macro'>check_encoder_for_simple</span><span class='macro'>!</span>(<span class='prelude-val'>Some</span>(<span class='string'>"jodhpurs"</span>.<span class='ident'>to_string</span>()), <span class='string'>"\"jodhpurs\""</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_none</span>() {
<span class='macro'>check_encoder_for_simple</span><span class='macro'>!</span>(<span class='prelude-val'>None</span>::<span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span><span class='op'>></span>, <span class='string'>"null"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_write_char</span>() {
<span class='macro'>check_encoder_for_simple</span><span class='macro'>!</span>(<span class='string'>'a'</span>, <span class='string'>"\"a\""</span>);
<span class='macro'>check_encoder_for_simple</span><span class='macro'>!</span>(<span class='string'>'\t'</span>, <span class='string'>"\"\\t\""</span>);
<span class='macro'>check_encoder_for_simple</span><span class='macro'>!</span>(<span class='string'>'\u{0000}'</span>, <span class='string'>"\"\\u0000\""</span>);
<span class='macro'>check_encoder_for_simple</span><span class='macro'>!</span>(<span class='string'>'\u{001b}'</span>, <span class='string'>"\"\\u001b\""</span>);
<span class='macro'>check_encoder_for_simple</span><span class='macro'>!</span>(<span class='string'>'\u{007f}'</span>, <span class='string'>"\"\\u007f\""</span>);
<span class='macro'>check_encoder_for_simple</span><span class='macro'>!</span>(<span class='string'>'\u{00a0}'</span>, <span class='string'>"\"\u{00a0}\""</span>);
<span class='macro'>check_encoder_for_simple</span><span class='macro'>!</span>(<span class='string'>'\u{abcd}'</span>, <span class='string'>"\"\u{abcd}\""</span>);
<span class='macro'>check_encoder_for_simple</span><span class='macro'>!</span>(<span class='string'>'\u{10ffff}'</span>, <span class='string'>"\"\u{10ffff}\""</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_trailing_characters</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"nulla"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>5</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"truea"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>5</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"falsea"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>6</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"1a"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[]a"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{}a"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_read_identifiers</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"n"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"nul"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"t"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"truz"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"f"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"faz"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"null"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Null</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"true"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Boolean</span>(<span class='bool-val'>true</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"false"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Boolean</span>(<span class='bool-val'>false</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>" null "</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Null</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>" true "</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Boolean</span>(<span class='bool-val'>true</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>" false "</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Boolean</span>(<span class='bool-val'>false</span>)));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_identifiers</span>() {
<span class='kw'>let</span> <span class='ident'>v</span>: () <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"null"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, ());
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>bool</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"true"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='bool-val'>true</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>bool</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"false"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='bool-val'>false</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_read_number</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"+"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>1</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"."</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>1</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"NaN"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>1</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"-"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidNumber</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"00"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidNumber</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"1."</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidNumber</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"1e"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidNumber</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"1e+"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidNumber</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"18446744073709551616"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidNumber</span>, <span class='number'>1</span>, <span class='number'>20</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"18446744073709551617"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidNumber</span>, <span class='number'>1</span>, <span class='number'>20</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"-9223372036854775809"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidNumber</span>, <span class='number'>1</span>, <span class='number'>21</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"3"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>U64</span>(<span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"3.1"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>F64</span>(<span class='number'>3.1</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"-1.2"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>F64</span>(<span class='op'>-</span><span class='number'>1.2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"0.4"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>F64</span>(<span class='number'>0.4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"0.4e5"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>F64</span>(<span class='number'>0.4e5</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"0.4e+15"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>F64</span>(<span class='number'>0.4e15</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"0.4e-01"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>F64</span>(<span class='number'>0.4e-01</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>" 3 "</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>U64</span>(<span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"-9223372036854775808"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>I64</span>(<span class='ident'>i64</span>::<span class='ident'>MIN</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"9223372036854775807"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>U64</span>(<span class='ident'>i64</span>::<span class='ident'>MAX</span> <span class='kw'>as</span> <span class='ident'>u64</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"18446744073709551615"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>U64</span>(<span class='ident'>u64</span>::<span class='ident'>MAX</span>)));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_numbers</span>() {
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>f64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"3"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='number'>3.0</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>f64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"3.1"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='number'>3.1</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>f64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"-1.2"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='op'>-</span><span class='number'>1.2</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>f64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"0.4"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='number'>0.4</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>f64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"0.4e5"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='number'>0.4e5</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>f64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"0.4e15"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='number'>0.4e15</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>f64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"0.4e-01"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='number'>0.4e-01</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>u64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"0"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='number'>0</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>u64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"18446744073709551615"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='ident'>u64</span>::<span class='ident'>MAX</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>i64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"-9223372036854775808"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='ident'>i64</span>::<span class='ident'>MIN</span>);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>i64</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"9223372036854775807"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='ident'>i64</span>::<span class='ident'>MAX</span>);
<span class='kw'>let</span> <span class='ident'>res</span>: <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>i64</span><span class='op'>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"765.25252"</span>);
<span class='kw'>match</span> <span class='ident'>res</span> {
<span class='prelude-val'>Ok</span>(..) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"expected an error"</span>),
<span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='kw-2'>ref</span> <span class='ident'>s</span>, _)) <span class='op'>=></span> <span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>s</span>, <span class='string'>"Integer"</span>),
<span class='prelude-val'>Err</span>(..) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"expected an 'expected integer' error"</span>),
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_read_str</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\""</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingString</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"lol"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingString</span>, <span class='number'>1</span>, <span class='number'>5</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\n\""</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>ControlCharacterInString</span>, <span class='number'>2</span>, <span class='number'>1</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\0\""</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>ControlCharacterInString</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\u{1}\""</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>ControlCharacterInString</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\u{1F}\""</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>ControlCharacterInString</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='comment'>// Only C0 control characters are excluded.</span>
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='string'>'\u{7F}'</span>.<span class='ident'>is_control</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='string'>'\u{80}'</span>.<span class='ident'>is_control</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='string'>'\u{9F}'</span>.<span class='ident'>is_control</span>());
<span class='kw'>let</span> <span class='ident'>c1_controls</span> <span class='op'>=</span> <span class='string'>"\u{7F}\u{80}\u{9F}"</span>.<span class='ident'>to_string</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='kw-2'>&</span><span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"\"{}\""</span>, <span class='ident'>c1_controls</span>)), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='ident'>c1_controls</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\""</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='string'>""</span>.<span class='ident'>to_string</span>())));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"foo\""</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='string'>"foo"</span>.<span class='ident'>to_string</span>())));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\\\"\""</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='string'>"\""</span>.<span class='ident'>to_string</span>())));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\\b\""</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='string'>"\x08"</span>.<span class='ident'>to_string</span>())));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\\n\""</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='string'>"\n"</span>.<span class='ident'>to_string</span>())));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\\r\""</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='string'>"\r"</span>.<span class='ident'>to_string</span>())));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\\t\""</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='string'>"\t"</span>.<span class='ident'>to_string</span>())));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>" \"foo\" "</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='string'>"foo"</span>.<span class='ident'>to_string</span>())));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\\u12ab\""</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='string'>"\u{12ab}"</span>.<span class='ident'>to_string</span>())));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"\\uAB12\""</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>String</span>(<span class='string'>"\u{AB12}"</span>.<span class='ident'>to_string</span>())));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_str</span>() {
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> [(<span class='string'>"\"\""</span>, <span class='string'>""</span>),
(<span class='string'>"\"foo\""</span>, <span class='string'>"foo"</span>),
(<span class='string'>"\"\\\"\""</span>, <span class='string'>"\""</span>),
(<span class='string'>"\"\\b\""</span>, <span class='string'>"\x08"</span>),
(<span class='string'>"\"\\n\""</span>, <span class='string'>"\n"</span>),
(<span class='string'>"\"\\r\""</span>, <span class='string'>"\r"</span>),
(<span class='string'>"\"\\t\""</span>, <span class='string'>"\t"</span>),
(<span class='string'>"\"\\u12ab\""</span>, <span class='string'>"\u{12ab}"</span>),
(<span class='string'>"\"\\uAB12\""</span>, <span class='string'>"\u{AB12}"</span>)];
<span class='kw'>for</span> <span class='kw-2'>&</span>(<span class='ident'>i</span>, <span class='ident'>o</span>) <span class='kw'>in</span> <span class='ident'>s</span>.<span class='ident'>iter</span>() {
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>string</span>::<span class='ident'>String</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='ident'>i</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='ident'>o</span>);
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_read_array</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"["</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingValue</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[1"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingArray</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[1,"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingValue</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[1,]"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[6 7]"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[]"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[])));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[ ]"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[])));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[true]"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Boolean</span>(<span class='bool-val'>true</span>)])));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[ false ]"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Boolean</span>(<span class='bool-val'>false</span>)])));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[null]"</span>), <span class='prelude-val'>Ok</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Null</span>])));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[3, 1]"</span>),
<span class='prelude-val'>Ok</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>U64</span>(<span class='number'>3</span>), <span class='ident'>U64</span>(<span class='number'>1</span>)])));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\n[3, 2]\n"</span>),
<span class='prelude-val'>Ok</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>U64</span>(<span class='number'>3</span>), <span class='ident'>U64</span>(<span class='number'>2</span>)])));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[2, [4, 1]]"</span>),
<span class='prelude-val'>Ok</span>(<span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>U64</span>(<span class='number'>2</span>), <span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>U64</span>(<span class='number'>4</span>), <span class='ident'>U64</span>(<span class='number'>1</span>)])])));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_array</span>() {
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>Vec</span><span class='op'><</span>()<span class='op'>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"[]"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>Vec</span><span class='op'><</span>()<span class='op'>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"[null]"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='macro'>vec</span><span class='macro'>!</span>[()]);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>bool</span><span class='op'>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"[true]"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='bool-val'>true</span>]);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>isize</span><span class='op'>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"[3, 1]"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='number'>3</span>, <span class='number'>1</span>]);
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>Vec</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"[[3], [1, 2]]"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='macro'>vec</span><span class='macro'>!</span>[<span class='number'>3</span>], <span class='macro'>vec</span><span class='macro'>!</span>[<span class='number'>1</span>, <span class='number'>2</span>]]);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_tuple</span>() {
<span class='kw'>let</span> <span class='ident'>t</span>: (<span class='ident'>usize</span>, <span class='ident'>usize</span>, <span class='ident'>usize</span>) <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"[1, 2, 3]"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>t</span>, (<span class='number'>1</span>, <span class='number'>2</span>, <span class='number'>3</span>));
<span class='kw'>let</span> <span class='ident'>t</span>: (<span class='ident'>usize</span>, <span class='ident'>string</span>::<span class='ident'>String</span>) <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"[1, \"two\"]"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>t</span>, (<span class='number'>1</span>, <span class='string'>"two"</span>.<span class='ident'>to_string</span>()));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_tuple_malformed_types</span>() {
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='kw'>super</span>::<span class='ident'>decode</span>::<span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>string</span>::<span class='ident'>String</span>)<span class='op'>></span>(<span class='string'>"[1, 2]"</span>).<span class='ident'>is_err</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_tuple_malformed_length</span>() {
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='kw'>super</span>::<span class='ident'>decode</span>::<span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>usize</span>)<span class='op'>></span>(<span class='string'>"[1, 2, 3]"</span>).<span class='ident'>is_err</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_read_object</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{ "</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{1"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>KeyMustBeAString</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{ \"a\""</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>6</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"a\""</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>5</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"a\" "</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>6</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"a\" 1"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>ExpectedColon</span>, <span class='number'>1</span>, <span class='number'>6</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"a\":"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingValue</span>, <span class='number'>1</span>, <span class='number'>6</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"a\":1"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>7</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"a\":1 1"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>8</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"a\":1,"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>8</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{}"</span>).<span class='ident'>unwrap</span>(), <span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[]));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"a\": 3}"</span>).<span class='ident'>unwrap</span>(),
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='ident'>U64</span>(<span class='number'>3</span>))]));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(
<span class='string'>"{ \"a\": null, \"b\" : true }"</span>).<span class='ident'>unwrap</span>(),
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[
(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Null</span>),
(<span class='string'>"b"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Boolean</span>(<span class='bool-val'>true</span>))]));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\n{ \"a\": null, \"b\" : true }\n"</span>).<span class='ident'>unwrap</span>(),
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[
(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Null</span>),
(<span class='string'>"b"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Boolean</span>(<span class='bool-val'>true</span>))]));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(
<span class='string'>"{\"a\" : 1.0 ,\"b\": [ true ]}"</span>).<span class='ident'>unwrap</span>(),
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[
(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='ident'>F64</span>(<span class='number'>1.0</span>)),
(<span class='string'>"b"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Boolean</span>(<span class='bool-val'>true</span>)]))
]));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(
<span class='string'>"{\
\"a\": 1.0, \
\"b\": [\
true,\
\"foo\\nbar\", \
{ \"c\": {\"d\": null} } \
]\
}"</span>).<span class='ident'>unwrap</span>(),
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[
(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='ident'>F64</span>(<span class='number'>1.0</span>)),
(<span class='string'>"b"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>Boolean</span>(<span class='bool-val'>true</span>),
<span class='ident'>String</span>(<span class='string'>"foo\nbar"</span>.<span class='ident'>to_string</span>()),
<span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[
(<span class='string'>"c"</span>.<span class='ident'>to_string</span>(), <span class='ident'>mk_object</span>(<span class='kw-2'>&</span>[(<span class='string'>"d"</span>.<span class='ident'>to_string</span>(), <span class='ident'>Null</span>)]))
])
]))
]));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_struct</span>() {
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='string'>"{
\"inner\": [
{ \"a\": null, \"b\": 2, \"c\": [\"abc\", \"xyz\"] }
]
}"</span>;
<span class='kw'>let</span> <span class='ident'>v</span>: <span class='ident'>Outer</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='ident'>s</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(
<span class='ident'>v</span>,
<span class='ident'>Outer</span> {
<span class='ident'>inner</span>: <span class='macro'>vec</span><span class='macro'>!</span>[
<span class='ident'>Inner</span> { <span class='ident'>a</span>: (), <span class='ident'>b</span>: <span class='number'>2</span>, <span class='ident'>c</span>: <span class='macro'>vec</span><span class='macro'>!</span>[<span class='string'>"abc"</span>.<span class='ident'>to_string</span>(), <span class='string'>"xyz"</span>.<span class='ident'>to_string</span>()] }
]
}
);
}
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>RustcDecodable</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>FloatStruct</span> {
<span class='ident'>f</span>: <span class='ident'>f64</span>,
<span class='ident'>a</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>f64</span><span class='op'>></span>
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_struct_with_nan</span>() {
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='string'>"{\"f\":null,\"a\":[null,123]}"</span>;
<span class='kw'>let</span> <span class='ident'>obj</span>: <span class='ident'>FloatStruct</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='ident'>s</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>obj</span>.<span class='ident'>f</span>.<span class='ident'>is_nan</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>obj</span>.<span class='ident'>a</span>[<span class='number'>0</span>].<span class='ident'>is_nan</span>());
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>obj</span>.<span class='ident'>a</span>[<span class='number'>1</span>], <span class='number'>123f64</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_option</span>() {
<span class='kw'>let</span> <span class='ident'>value</span>: <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span><span class='op'>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"null"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>value</span>, <span class='prelude-val'>None</span>);
<span class='kw'>let</span> <span class='ident'>value</span>: <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span><span class='op'>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"\"jodhpurs\""</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>value</span>, <span class='prelude-val'>Some</span>(<span class='string'>"jodhpurs"</span>.<span class='ident'>to_string</span>()));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_enum</span>() {
<span class='kw'>let</span> <span class='ident'>value</span>: <span class='ident'>Animal</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='string'>"\"Dog\""</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>value</span>, <span class='ident'>Dog</span>);
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='string'>"{\"variant\":\"Frog\",\"fields\":[\"Henry\",349]}"</span>;
<span class='kw'>let</span> <span class='ident'>value</span>: <span class='ident'>Animal</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='ident'>s</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>value</span>, <span class='ident'>Frog</span>(<span class='string'>"Henry"</span>.<span class='ident'>to_string</span>(), <span class='number'>349</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_result</span>() {
<span class='kw'>let</span> <span class='ident'>value</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>i32</span>, <span class='ident'>i8</span><span class='op'>></span> <span class='op'>=</span> <span class='prelude-val'>Ok</span>(<span class='number'>4</span>);
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>encode</span>(<span class='kw-2'>&</span><span class='ident'>value</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>json_value</span>, <span class='string'>"{\"variant\":\"Ok\",\"fields\":[4]}"</span>);
<span class='kw'>let</span> <span class='ident'>decoded_value</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>i32</span>, <span class='ident'>i8</span><span class='op'>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='kw-2'>&</span><span class='ident'>json_value</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>decoded_value</span>, <span class='prelude-val'>Ok</span>(<span class='number'>4</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_map</span>() {
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='string'>"{\"a\": \"Dog\", \"b\": {\"variant\":\"Frog\",\
\"fields\":[\"Henry\", 349]}}"</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span>: <span class='ident'>BTreeMap</span><span class='op'><</span><span class='ident'>string</span>::<span class='ident'>String</span>, <span class='ident'>Animal</span><span class='op'>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='ident'>s</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>remove</span>(<span class='kw-2'>&</span><span class='string'>"a"</span>.<span class='ident'>to_string</span>()), <span class='prelude-val'>Some</span>(<span class='ident'>Dog</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>remove</span>(<span class='kw-2'>&</span><span class='string'>"b"</span>.<span class='ident'>to_string</span>()), <span class='prelude-val'>Some</span>(<span class='ident'>Frog</span>(<span class='string'>"Henry"</span>.<span class='ident'>to_string</span>(), <span class='number'>349</span>)));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_multiline_errors</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\n \"foo\":\n \"bar\""</span>),
<span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>3</span>, <span class='number'>8</span>)));
}
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>RustcDecodable</span>)]</span>
<span class='attribute'>#[<span class='ident'>allow</span>(<span class='ident'>dead_code</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>DecodeStruct</span> {
<span class='ident'>x</span>: <span class='ident'>f64</span>,
<span class='ident'>y</span>: <span class='ident'>bool</span>,
<span class='ident'>z</span>: <span class='ident'>string</span>::<span class='ident'>String</span>,
<span class='ident'>w</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>DecodeStruct</span><span class='op'>></span>
}
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>RustcDecodable</span>)]</span>
<span class='kw'>enum</span> <span class='ident'>DecodeEnum</span> {
<span class='ident'>A</span>(<span class='ident'>f64</span>),
<span class='ident'>B</span>(<span class='ident'>string</span>::<span class='ident'>String</span>)
}
<span class='kw'>fn</span> <span class='ident'>check_err</span><span class='op'><</span><span class='ident'>T</span>: <span class='ident'>Decodable</span><span class='op'>></span>(<span class='ident'>to_parse</span>: <span class='kw-2'>&</span><span class='lifetime'>'static</span> <span class='ident'>str</span>, <span class='ident'>expected</span>: <span class='ident'>DecoderError</span>) {
<span class='kw'>let</span> <span class='ident'>res</span>: <span class='ident'>DecodeResult</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='ident'>to_parse</span>) {
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> <span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>(<span class='ident'>e</span>)),
<span class='prelude-val'>Ok</span>(<span class='ident'>json</span>) <span class='op'>=></span> <span class='ident'>Decodable</span>::<span class='ident'>decode</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>Decoder</span>::<span class='ident'>new</span>(<span class='ident'>json</span>))
};
<span class='kw'>match</span> <span class='ident'>res</span> {
<span class='prelude-val'>Ok</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"`{:?}` parsed & decoded ok, expecting error `{:?}`"</span>,
<span class='ident'>to_parse</span>, <span class='ident'>expected</span>),
<span class='prelude-val'>Err</span>(<span class='ident'>ParseError</span>(<span class='ident'>e</span>)) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"`{}` is not valid json: {:?}"</span>,
<span class='ident'>to_parse</span>, <span class='ident'>e</span>),
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>e</span>, <span class='ident'>expected</span>);
}
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_errors_struct</span>() {
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeStruct</span><span class='op'>></span>(<span class='string'>"[]"</span>, <span class='ident'>ExpectedError</span>(<span class='string'>"Object"</span>.<span class='ident'>to_string</span>(), <span class='string'>"[]"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeStruct</span><span class='op'>></span>(<span class='string'>"{\"x\": true, \"y\": true, \"z\": \"\", \"w\": []}"</span>,
<span class='ident'>ExpectedError</span>(<span class='string'>"Number"</span>.<span class='ident'>to_string</span>(), <span class='string'>"true"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeStruct</span><span class='op'>></span>(<span class='string'>"{\"x\": 1, \"y\": [], \"z\": \"\", \"w\": []}"</span>,
<span class='ident'>ExpectedError</span>(<span class='string'>"Boolean"</span>.<span class='ident'>to_string</span>(), <span class='string'>"[]"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeStruct</span><span class='op'>></span>(<span class='string'>"{\"x\": 1, \"y\": true, \"z\": {}, \"w\": []}"</span>,
<span class='ident'>ExpectedError</span>(<span class='string'>"String"</span>.<span class='ident'>to_string</span>(), <span class='string'>"{}"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeStruct</span><span class='op'>></span>(<span class='string'>"{\"x\": 1, \"y\": true, \"z\": \"\", \"w\": null}"</span>,
<span class='ident'>ExpectedError</span>(<span class='string'>"Array"</span>.<span class='ident'>to_string</span>(), <span class='string'>"null"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeStruct</span><span class='op'>></span>(<span class='string'>"{\"x\": 1, \"y\": true, \"z\": \"\"}"</span>,
<span class='ident'>MissingFieldError</span>(<span class='string'>"w"</span>.<span class='ident'>to_string</span>()));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_decode_errors_enum</span>() {
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeEnum</span><span class='op'>></span>(<span class='string'>"{}"</span>,
<span class='ident'>MissingFieldError</span>(<span class='string'>"variant"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeEnum</span><span class='op'>></span>(<span class='string'>"{\"variant\": 1}"</span>,
<span class='ident'>ExpectedError</span>(<span class='string'>"String"</span>.<span class='ident'>to_string</span>(), <span class='string'>"1"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeEnum</span><span class='op'>></span>(<span class='string'>"{\"variant\": \"A\"}"</span>,
<span class='ident'>MissingFieldError</span>(<span class='string'>"fields"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeEnum</span><span class='op'>></span>(<span class='string'>"{\"variant\": \"A\", \"fields\": null}"</span>,
<span class='ident'>ExpectedError</span>(<span class='string'>"Array"</span>.<span class='ident'>to_string</span>(), <span class='string'>"null"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>check_err</span>::<span class='op'><</span><span class='ident'>DecodeEnum</span><span class='op'>></span>(<span class='string'>"{\"variant\": \"C\", \"fields\": []}"</span>,
<span class='ident'>UnknownVariantError</span>(<span class='string'>"C"</span>.<span class='ident'>to_string</span>()));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_find</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"dog\" : \"cat\"}"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>found_str</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>find</span>(<span class='string'>"dog"</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>found_str</span>.<span class='ident'>unwrap</span>().<span class='ident'>as_string</span>().<span class='ident'>unwrap</span>() <span class='op'>==</span> <span class='string'>"cat"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_find_path</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"dog\":{\"cat\": {\"mouse\" : \"cheese\"}}}"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>found_str</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>find_path</span>(<span class='kw-2'>&</span>[<span class='string'>"dog"</span>, <span class='string'>"cat"</span>, <span class='string'>"mouse"</span>]);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>found_str</span>.<span class='ident'>unwrap</span>().<span class='ident'>as_string</span>().<span class='ident'>unwrap</span>() <span class='op'>==</span> <span class='string'>"cheese"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_search</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"dog\":{\"cat\": {\"mouse\" : \"cheese\"}}}"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>found_str</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>search</span>(<span class='string'>"mouse"</span>).<span class='ident'>and_then</span>(<span class='op'>|</span><span class='ident'>j</span><span class='op'>|</span> <span class='ident'>j</span>.<span class='ident'>as_string</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>found_str</span>.<span class='ident'>unwrap</span>() <span class='op'>==</span> <span class='string'>"cheese"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_index</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"animals\":[\"dog\",\"cat\",\"mouse\"]}"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='kw-2'>ref</span> <span class='ident'>array</span> <span class='op'>=</span> <span class='ident'>json_value</span>[<span class='string'>"animals"</span>];
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>array</span>[<span class='number'>0</span>].<span class='ident'>as_string</span>().<span class='ident'>unwrap</span>(), <span class='string'>"dog"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>array</span>[<span class='number'>1</span>].<span class='ident'>as_string</span>().<span class='ident'>unwrap</span>(), <span class='string'>"cat"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>array</span>[<span class='number'>2</span>].<span class='ident'>as_string</span>().<span class='ident'>unwrap</span>(), <span class='string'>"mouse"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_is_object</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{}"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_value</span>.<span class='ident'>is_object</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_as_object</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{}"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>json_object</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>as_object</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_object</span>.<span class='ident'>is_some</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_is_array</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[1, 2, 3]"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_value</span>.<span class='ident'>is_array</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_as_array</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[1, 2, 3]"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>json_array</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>as_array</span>();
<span class='kw'>let</span> <span class='ident'>expected_length</span> <span class='op'>=</span> <span class='number'>3</span>;
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_array</span>.<span class='ident'>is_some</span>() <span class='op'>&&</span> <span class='ident'>json_array</span>.<span class='ident'>unwrap</span>().<span class='ident'>len</span>() <span class='op'>==</span> <span class='ident'>expected_length</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_is_string</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"dog\""</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_value</span>.<span class='ident'>is_string</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_as_string</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"\"dog\""</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>json_str</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>as_string</span>();
<span class='kw'>let</span> <span class='ident'>expected_str</span> <span class='op'>=</span> <span class='string'>"dog"</span>;
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>json_str</span>, <span class='prelude-val'>Some</span>(<span class='ident'>expected_str</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_is_number</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"12"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_value</span>.<span class='ident'>is_number</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_is_i64</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"-12"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_value</span>.<span class='ident'>is_i64</span>());
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"12"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>json_value</span>.<span class='ident'>is_i64</span>());
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"12.0"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>json_value</span>.<span class='ident'>is_i64</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_is_u64</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"12"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_value</span>.<span class='ident'>is_u64</span>());
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"-12"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>json_value</span>.<span class='ident'>is_u64</span>());
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"12.0"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>json_value</span>.<span class='ident'>is_u64</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_is_f64</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"12"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>json_value</span>.<span class='ident'>is_f64</span>());
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"-12"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>json_value</span>.<span class='ident'>is_f64</span>());
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"12.0"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_value</span>.<span class='ident'>is_f64</span>());
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"-12.0"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_value</span>.<span class='ident'>is_f64</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_as_i64</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"-12"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>json_num</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>as_i64</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>json_num</span>, <span class='prelude-val'>Some</span>(<span class='op'>-</span><span class='number'>12</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_as_u64</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"12"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>json_num</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>as_u64</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>json_num</span>, <span class='prelude-val'>Some</span>(<span class='number'>12</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_as_f64</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"12.0"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>json_num</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>as_f64</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>json_num</span>, <span class='prelude-val'>Some</span>(<span class='number'>12f64</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_is_boolean</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"false"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_value</span>.<span class='ident'>is_boolean</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_as_boolean</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"false"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>json_bool</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>as_boolean</span>();
<span class='kw'>let</span> <span class='ident'>expected_bool</span> <span class='op'>=</span> <span class='bool-val'>false</span>;
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_bool</span>.<span class='ident'>is_some</span>() <span class='op'>&&</span> <span class='ident'>json_bool</span>.<span class='ident'>unwrap</span>() <span class='op'>==</span> <span class='ident'>expected_bool</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_is_null</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"null"</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_value</span>.<span class='ident'>is_null</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_as_null</span>(){
<span class='kw'>let</span> <span class='ident'>json_value</span> <span class='op'>=</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"null"</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>json_null</span> <span class='op'>=</span> <span class='ident'>json_value</span>.<span class='ident'>as_null</span>();
<span class='kw'>let</span> <span class='ident'>expected_null</span> <span class='op'>=</span> ();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>json_null</span>.<span class='ident'>is_some</span>() <span class='op'>&&</span> <span class='ident'>json_null</span>.<span class='ident'>unwrap</span>() <span class='op'>==</span> <span class='ident'>expected_null</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_encode_hashmap_with_numeric_key</span>() {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::<span class='ident'>HashMap</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>hm</span>: <span class='ident'>HashMap</span><span class='op'><</span><span class='ident'>usize</span>, <span class='ident'>bool</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>HashMap</span>::<span class='ident'>new</span>();
<span class='ident'>hm</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='bool-val'>true</span>);
<span class='kw'>let</span> <span class='ident'>json_str</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>as_pretty_json</span>(<span class='kw-2'>&</span><span class='ident'>hm</span>).<span class='ident'>to_string</span>();
<span class='kw'>match</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='kw-2'>&</span><span class='ident'>json_str</span>) {
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Unable to parse json_str: {}"</span>, <span class='ident'>json_str</span>),
_ <span class='op'>=></span> {} <span class='comment'>// it parsed and we are good to go</span>
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_negative_zero</span>() {
<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"test\":-0}"</span>).<span class='ident'>unwrap</span>();
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_prettyencode_hashmap_with_numeric_key</span>() {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::<span class='ident'>HashMap</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>hm</span>: <span class='ident'>HashMap</span><span class='op'><</span><span class='ident'>usize</span>, <span class='ident'>bool</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>HashMap</span>::<span class='ident'>new</span>();
<span class='ident'>hm</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='bool-val'>true</span>);
<span class='kw'>let</span> <span class='ident'>json_str</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>as_pretty_json</span>(<span class='kw-2'>&</span><span class='ident'>hm</span>).<span class='ident'>to_string</span>();
<span class='kw'>match</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='kw-2'>&</span><span class='ident'>json_str</span>) {
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Unable to parse json_str: {}"</span>, <span class='ident'>json_str</span>),
_ <span class='op'>=></span> {} <span class='comment'>// it parsed and we are good to go</span>
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_prettyencoder_indent_level_param</span>() {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::<span class='ident'>BTreeMap</span>;
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>tree</span> <span class='op'>=</span> <span class='ident'>BTreeMap</span>::<span class='ident'>new</span>();
<span class='ident'>tree</span>.<span class='ident'>insert</span>(<span class='string'>"hello"</span>.<span class='ident'>to_string</span>(), <span class='ident'>String</span>(<span class='string'>"guten tag"</span>.<span class='ident'>to_string</span>()));
<span class='ident'>tree</span>.<span class='ident'>insert</span>(<span class='string'>"goodbye"</span>.<span class='ident'>to_string</span>(), <span class='ident'>String</span>(<span class='string'>"sayonara"</span>.<span class='ident'>to_string</span>()));
<span class='kw'>let</span> <span class='ident'>json</span> <span class='op'>=</span> <span class='ident'>Array</span>(
<span class='comment'>// The following layout below should look a lot like</span>
<span class='comment'>// the pretty-printed JSON (indent * x)</span>
<span class='macro'>vec</span><span class='macro'>!</span>
( <span class='comment'>// 0x</span>
<span class='ident'>String</span>(<span class='string'>"greetings"</span>.<span class='ident'>to_string</span>()), <span class='comment'>// 1x</span>
<span class='ident'>Object</span>(<span class='ident'>tree</span>), <span class='comment'>// 1x + 2x + 2x + 1x</span>
) <span class='comment'>// 0x</span>
<span class='comment'>// End JSON array (7 lines)</span>
);
<span class='comment'>// Helper function for counting indents</span>
<span class='kw'>fn</span> <span class='ident'>indents</span>(<span class='ident'>source</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='ident'>usize</span> {
<span class='kw'>let</span> <span class='ident'>trimmed</span> <span class='op'>=</span> <span class='ident'>source</span>.<span class='ident'>trim_left_matches</span>(<span class='string'>' '</span>);
<span class='ident'>source</span>.<span class='ident'>len</span>() <span class='op'>-</span> <span class='ident'>trimmed</span>.<span class='ident'>len</span>()
}
<span class='comment'>// Test up to 4 spaces of indents (more?)</span>
<span class='kw'>for</span> <span class='ident'>i</span> <span class='kw'>in</span> <span class='number'>0</span>..<span class='number'>4</span> {
<span class='kw'>let</span> <span class='ident'>printed</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>as_pretty_json</span>(<span class='kw-2'>&</span><span class='ident'>json</span>).<span class='ident'>indent</span>(<span class='ident'>i</span> <span class='kw'>as</span> <span class='ident'>u32</span>)
.<span class='ident'>to_string</span>();
<span class='comment'>// Check for indents at each line</span>
<span class='kw'>let</span> <span class='ident'>lines</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='kw-2'>&</span><span class='ident'>str</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>printed</span>.<span class='ident'>lines</span>().<span class='ident'>collect</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>lines</span>.<span class='ident'>len</span>(), <span class='number'>7</span>); <span class='comment'>// JSON should be 7 lines</span>
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>indents</span>(<span class='ident'>lines</span>[<span class='number'>0</span>]), <span class='number'>0</span> <span class='op'>*</span> <span class='ident'>i</span>); <span class='comment'>// [</span>
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>indents</span>(<span class='ident'>lines</span>[<span class='number'>1</span>]), <span class='number'>1</span> <span class='op'>*</span> <span class='ident'>i</span>); <span class='comment'>// "greetings",</span>
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>indents</span>(<span class='ident'>lines</span>[<span class='number'>2</span>]), <span class='number'>1</span> <span class='op'>*</span> <span class='ident'>i</span>); <span class='comment'>// {</span>
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>indents</span>(<span class='ident'>lines</span>[<span class='number'>3</span>]), <span class='number'>2</span> <span class='op'>*</span> <span class='ident'>i</span>); <span class='comment'>// "hello": "guten tag",</span>
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>indents</span>(<span class='ident'>lines</span>[<span class='number'>4</span>]), <span class='number'>2</span> <span class='op'>*</span> <span class='ident'>i</span>); <span class='comment'>// "goodbye": "sayonara"</span>
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>indents</span>(<span class='ident'>lines</span>[<span class='number'>5</span>]), <span class='number'>1</span> <span class='op'>*</span> <span class='ident'>i</span>); <span class='comment'>// },</span>
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>indents</span>(<span class='ident'>lines</span>[<span class='number'>6</span>]), <span class='number'>0</span> <span class='op'>*</span> <span class='ident'>i</span>); <span class='comment'>// ]</span>
<span class='comment'>// Finally, test that the pretty-printed JSON is valid</span>
<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='kw-2'>&</span><span class='ident'>printed</span>).<span class='ident'>ok</span>()
.<span class='ident'>expect</span>(<span class='string'>"Pretty-printed JSON is invalid!"</span>);
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_hashmap_with_numeric_key_can_handle_double_quote_delimited_key</span>() {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::<span class='ident'>HashMap</span>;
<span class='kw'>use</span> <span class='ident'>Decodable</span>;
<span class='kw'>let</span> <span class='ident'>json_str</span> <span class='op'>=</span> <span class='string'>"{\"1\":true}"</span>;
<span class='kw'>let</span> <span class='ident'>json_obj</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='ident'>json_str</span>) {
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Unable to parse json_str: {}"</span>, <span class='ident'>json_str</span>),
<span class='prelude-val'>Ok</span>(<span class='ident'>o</span>) <span class='op'>=></span> <span class='ident'>o</span>
};
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>decoder</span> <span class='op'>=</span> <span class='ident'>Decoder</span>::<span class='ident'>new</span>(<span class='ident'>json_obj</span>);
<span class='kw'>let</span> <span class='ident'>_hm</span>: <span class='ident'>HashMap</span><span class='op'><</span><span class='ident'>usize</span>, <span class='ident'>bool</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>Decodable</span>::<span class='ident'>decode</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>decoder</span>).<span class='ident'>unwrap</span>();
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_hashmap_with_enum_key</span>() {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::<span class='ident'>HashMap</span>;
<span class='kw'>use</span> <span class='ident'>json</span>;
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>RustcEncodable</span>, <span class='ident'>Eq</span>, <span class='ident'>Hash</span>, <span class='ident'>PartialEq</span>, <span class='ident'>RustcDecodable</span>, <span class='ident'>Debug</span>)]</span>
<span class='kw'>enum</span> <span class='ident'>Enum</span> {
<span class='ident'>Foo</span>,
<span class='attribute'>#[<span class='ident'>allow</span>(<span class='ident'>dead_code</span>)]</span>
<span class='ident'>Bar</span>,
}
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span> <span class='op'>=</span> <span class='ident'>HashMap</span>::<span class='ident'>new</span>();
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='ident'>Enum</span>::<span class='ident'>Foo</span>, <span class='number'>0</span>);
<span class='kw'>let</span> <span class='ident'>result</span> <span class='op'>=</span> <span class='ident'>json</span>::<span class='ident'>encode</span>(<span class='kw-2'>&</span><span class='ident'>map</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>result</span>, <span class='string'>r#"{"Foo":0}"#</span>);
<span class='kw'>let</span> <span class='ident'>decoded</span>: <span class='ident'>HashMap</span><span class='op'><</span><span class='ident'>Enum</span>, _<span class='op'>></span> <span class='op'>=</span> <span class='ident'>json</span>::<span class='ident'>decode</span>(<span class='kw-2'>&</span><span class='ident'>result</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>, <span class='ident'>decoded</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_hashmap_with_numeric_key_will_error_with_string_keys</span>() {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::<span class='ident'>HashMap</span>;
<span class='kw'>use</span> <span class='ident'>Decodable</span>;
<span class='kw'>let</span> <span class='ident'>json_str</span> <span class='op'>=</span> <span class='string'>"{\"a\":true}"</span>;
<span class='kw'>let</span> <span class='ident'>json_obj</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='ident'>json_str</span>) {
<span class='prelude-val'>Err</span>(_) <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Unable to parse json_str: {}"</span>, <span class='ident'>json_str</span>),
<span class='prelude-val'>Ok</span>(<span class='ident'>o</span>) <span class='op'>=></span> <span class='ident'>o</span>
};
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>decoder</span> <span class='op'>=</span> <span class='ident'>Decoder</span>::<span class='ident'>new</span>(<span class='ident'>json_obj</span>);
<span class='kw'>let</span> <span class='ident'>result</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>HashMap</span><span class='op'><</span><span class='ident'>usize</span>, <span class='ident'>bool</span><span class='op'>></span>, <span class='ident'>DecoderError</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>Decodable</span>::<span class='ident'>decode</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>decoder</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>result</span>, <span class='prelude-val'>Err</span>(<span class='ident'>ExpectedError</span>(<span class='string'>"Number"</span>.<span class='ident'>to_string</span>(), <span class='string'>"a"</span>.<span class='ident'>to_string</span>())));
}
<span class='kw'>fn</span> <span class='ident'>assert_stream_equal</span>(<span class='ident'>src</span>: <span class='kw-2'>&</span><span class='ident'>str</span>,
<span class='ident'>expected</span>: <span class='ident'>Vec</span><span class='op'><</span>(<span class='ident'>JsonEvent</span>, <span class='ident'>Vec</span><span class='op'><</span><span class='ident'>StackElement</span><span class='op'>></span>)<span class='op'>></span>) {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>parser</span> <span class='op'>=</span> <span class='ident'>Parser</span>::<span class='ident'>new</span>(<span class='ident'>src</span>.<span class='ident'>chars</span>());
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>i</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>loop</span> {
<span class='kw'>let</span> <span class='ident'>evt</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>parser</span>.<span class='ident'>next</span>() {
<span class='prelude-val'>Some</span>(<span class='ident'>e</span>) <span class='op'>=></span> <span class='ident'>e</span>,
<span class='prelude-val'>None</span> <span class='op'>=></span> { <span class='kw'>break</span>; }
};
<span class='kw'>let</span> (<span class='kw-2'>ref</span> <span class='ident'>expected_evt</span>, <span class='kw-2'>ref</span> <span class='ident'>expected_stack</span>) <span class='op'>=</span> <span class='ident'>expected</span>[<span class='ident'>i</span>];
<span class='kw'>if</span> <span class='op'>!</span><span class='ident'>parser</span>.<span class='ident'>stack</span>().<span class='ident'>is_equal_to</span>(<span class='kw-2'>&</span><span class='ident'>expected_stack</span>) {
<span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"Parser stack is not equal to {:?}"</span>, <span class='ident'>expected_stack</span>);
}
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='kw-2'>&</span><span class='ident'>evt</span>, <span class='ident'>expected_evt</span>);
<span class='ident'>i</span><span class='op'>+=</span><span class='number'>1</span>;
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='attribute'>#[<span class='ident'>cfg_attr</span>(<span class='ident'>target_word_size</span> <span class='op'>=</span> <span class='string'>"32"</span>, <span class='ident'>ignore</span>)]</span> <span class='comment'>// FIXME(#14064)</span>
<span class='kw'>fn</span> <span class='ident'>test_streaming_parser</span>() {
<span class='ident'>assert_stream_equal</span>(
<span class='string'>r#"{ "foo":"bar", "array" : [0, 1, 2, 3, 4, 5], "idents":[null,true,false]}"#</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ObjectStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>StringValue</span>(<span class='string'>"bar"</span>.<span class='ident'>to_string</span>()), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"foo"</span>)]),
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"array"</span>)]),
(<span class='ident'>U64Value</span>(<span class='number'>0</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"array"</span>), <span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>U64Value</span>(<span class='number'>1</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"array"</span>), <span class='ident'>Index</span>(<span class='number'>1</span>)]),
(<span class='ident'>U64Value</span>(<span class='number'>2</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"array"</span>), <span class='ident'>Index</span>(<span class='number'>2</span>)]),
(<span class='ident'>U64Value</span>(<span class='number'>3</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"array"</span>), <span class='ident'>Index</span>(<span class='number'>3</span>)]),
(<span class='ident'>U64Value</span>(<span class='number'>4</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"array"</span>), <span class='ident'>Index</span>(<span class='number'>4</span>)]),
(<span class='ident'>U64Value</span>(<span class='number'>5</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"array"</span>), <span class='ident'>Index</span>(<span class='number'>5</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"array"</span>)]),
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"idents"</span>)]),
(<span class='ident'>NullValue</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"idents"</span>), <span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>BooleanValue</span>(<span class='bool-val'>true</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"idents"</span>), <span class='ident'>Index</span>(<span class='number'>1</span>)]),
(<span class='ident'>BooleanValue</span>(<span class='bool-val'>false</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"idents"</span>), <span class='ident'>Index</span>(<span class='number'>2</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"idents"</span>)]),
(<span class='ident'>ObjectEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
}
<span class='kw'>fn</span> <span class='ident'>last_event</span>(<span class='ident'>src</span>: <span class='kw-2'>&</span><span class='ident'>str</span>) <span class='op'>-></span> <span class='ident'>JsonEvent</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>parser</span> <span class='op'>=</span> <span class='ident'>Parser</span>::<span class='ident'>new</span>(<span class='ident'>src</span>.<span class='ident'>chars</span>());
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>evt</span> <span class='op'>=</span> <span class='ident'>NullValue</span>;
<span class='kw'>loop</span> {
<span class='ident'>evt</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>parser</span>.<span class='ident'>next</span>() {
<span class='prelude-val'>Some</span>(<span class='ident'>e</span>) <span class='op'>=></span> <span class='ident'>e</span>,
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='kw'>return</span> <span class='ident'>evt</span>,
}
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='attribute'>#[<span class='ident'>cfg_attr</span>(<span class='ident'>target_word_size</span> <span class='op'>=</span> <span class='string'>"32"</span>, <span class='ident'>ignore</span>)]</span> <span class='comment'>// FIXME(#14064)</span>
<span class='kw'>fn</span> <span class='ident'>test_read_object_streaming</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{ "</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{1"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>KeyMustBeAString</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{ \"a\""</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>6</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{\"a\""</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>5</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{\"a\" "</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>6</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{\"a\" 1"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>ExpectedColon</span>, <span class='number'>1</span>, <span class='number'>6</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{\"a\":"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingValue</span>, <span class='number'>1</span>, <span class='number'>6</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{\"a\":1"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>7</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{\"a\":1 1"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>8</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{\"a\":1,"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingObject</span>, <span class='number'>1</span>, <span class='number'>8</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{\"a\":1,}"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingComma</span>, <span class='number'>1</span>, <span class='number'>8</span>)));
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"{}"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[(<span class='ident'>ObjectStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]), (<span class='ident'>ObjectEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[])]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"{\"a\": 3}"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ObjectStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>U64Value</span>(<span class='number'>3</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"a"</span>)]),
(<span class='ident'>ObjectEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"{ \"a\": null, \"b\" : true }"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ObjectStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>NullValue</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"a"</span>)]),
(<span class='ident'>BooleanValue</span>(<span class='bool-val'>true</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>)]),
(<span class='ident'>ObjectEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"{\"a\" : 1.0 ,\"b\": [ true ]}"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ObjectStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>F64Value</span>(<span class='number'>1.0</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"a"</span>)]),
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>)]),
(<span class='ident'>BooleanValue</span>(<span class='bool-val'>true</span>),<span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>), <span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>)]),
(<span class='ident'>ObjectEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>r#"{
"a": 1.0,
"b": [
true,
"foo\nbar",
{ "c": {"d": null} },
"\uD834\uDF06"
]
}"#</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ObjectStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>F64Value</span>(<span class='number'>1.0</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"a"</span>)]),
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>)]),
(<span class='ident'>BooleanValue</span>(<span class='bool-val'>true</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>), <span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>StringValue</span>(<span class='string'>"foo\nbar"</span>.<span class='ident'>to_string</span>()), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>), <span class='ident'>Index</span>(<span class='number'>1</span>)]),
(<span class='ident'>ObjectStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>), <span class='ident'>Index</span>(<span class='number'>2</span>)]),
(<span class='ident'>ObjectStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>), <span class='ident'>Index</span>(<span class='number'>2</span>), <span class='ident'>Key</span>(<span class='string'>"c"</span>)]),
(<span class='ident'>NullValue</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>), <span class='ident'>Index</span>(<span class='number'>2</span>), <span class='ident'>Key</span>(<span class='string'>"c"</span>), <span class='ident'>Key</span>(<span class='string'>"d"</span>)]),
(<span class='ident'>ObjectEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>), <span class='ident'>Index</span>(<span class='number'>2</span>), <span class='ident'>Key</span>(<span class='string'>"c"</span>)]),
(<span class='ident'>ObjectEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>), <span class='ident'>Index</span>(<span class='number'>2</span>)]),
(<span class='ident'>StringValue</span>(<span class='string'>"\u{1D306}"</span>.<span class='ident'>to_string</span>()), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>), <span class='ident'>Index</span>(<span class='number'>3</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Key</span>(<span class='string'>"b"</span>)]),
(<span class='ident'>ObjectEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='attribute'>#[<span class='ident'>cfg_attr</span>(<span class='ident'>target_word_size</span> <span class='op'>=</span> <span class='string'>"32"</span>, <span class='ident'>ignore</span>)]</span> <span class='comment'>// FIXME(#14064)</span>
<span class='kw'>fn</span> <span class='ident'>test_read_array_streaming</span>() {
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"[]"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"[ ]"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"[true]"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>BooleanValue</span>(<span class='bool-val'>true</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"[ false ]"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>BooleanValue</span>(<span class='bool-val'>false</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"[null]"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>NullValue</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"[3, 1]"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>U64Value</span>(<span class='number'>3</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>U64Value</span>(<span class='number'>1</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>1</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"\n[3, 2]\n"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>U64Value</span>(<span class='number'>3</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>U64Value</span>(<span class='number'>2</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>1</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='ident'>assert_stream_equal</span>(
<span class='string'>"[2, [4, 1]]"</span>,
<span class='macro'>vec</span><span class='macro'>!</span>[
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
(<span class='ident'>U64Value</span>(<span class='number'>2</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>ArrayStart</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>1</span>)]),
(<span class='ident'>U64Value</span>(<span class='number'>4</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Index</span>(<span class='number'>0</span>)]),
(<span class='ident'>U64Value</span>(<span class='number'>1</span>), <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Index</span>(<span class='number'>1</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='ident'>Index</span>(<span class='number'>1</span>)]),
(<span class='ident'>ArrayEnd</span>, <span class='macro'>vec</span><span class='macro'>!</span>[]),
]
);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"["</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingValue</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"["</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingValue</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[1"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingArray</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[1,"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>EOFWhileParsingValue</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[1,]"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"[6 7]"</span>), <span class='prelude-val'>Err</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_trailing_characters_streaming</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"nulla"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>5</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"truea"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>5</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"falsea"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>6</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"1a"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"[]a"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"{}a"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>TrailingCharacters</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_read_identifiers_streaming</span>() {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Parser</span>::<span class='ident'>new</span>(<span class='string'>"null"</span>.<span class='ident'>chars</span>()).<span class='ident'>next</span>(), <span class='prelude-val'>Some</span>(<span class='ident'>NullValue</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Parser</span>::<span class='ident'>new</span>(<span class='string'>"true"</span>.<span class='ident'>chars</span>()).<span class='ident'>next</span>(), <span class='prelude-val'>Some</span>(<span class='ident'>BooleanValue</span>(<span class='bool-val'>true</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>Parser</span>::<span class='ident'>new</span>(<span class='string'>"false"</span>.<span class='ident'>chars</span>()).<span class='ident'>next</span>(), <span class='prelude-val'>Some</span>(<span class='ident'>BooleanValue</span>(<span class='bool-val'>false</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"n"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"nul"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"t"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"truz"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"f"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>2</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>last_event</span>(<span class='string'>"faz"</span>), <span class='ident'>Error</span>(<span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>3</span>)));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_stack</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>stack</span> <span class='op'>=</span> <span class='ident'>Stack</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>is_empty</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>len</span>() <span class='op'>==</span> <span class='number'>0</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>stack</span>.<span class='ident'>last_is_index</span>());
<span class='ident'>stack</span>.<span class='ident'>push_index</span>(<span class='number'>0</span>);
<span class='ident'>stack</span>.<span class='ident'>bump_index</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>len</span>() <span class='op'>==</span> <span class='number'>1</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>is_equal_to</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>starts_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>ends_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>last_is_index</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>get</span>(<span class='number'>0</span>) <span class='op'>==</span> <span class='ident'>Index</span>(<span class='number'>1</span>));
<span class='ident'>stack</span>.<span class='ident'>push_key</span>(<span class='string'>"foo"</span>.<span class='ident'>to_string</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>len</span>() <span class='op'>==</span> <span class='number'>2</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>is_equal_to</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Key</span>(<span class='string'>"foo"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>starts_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Key</span>(<span class='string'>"foo"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>starts_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>ends_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Key</span>(<span class='string'>"foo"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>ends_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Key</span>(<span class='string'>"foo"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>stack</span>.<span class='ident'>last_is_index</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>get</span>(<span class='number'>0</span>) <span class='op'>==</span> <span class='ident'>Index</span>(<span class='number'>1</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>get</span>(<span class='number'>1</span>) <span class='op'>==</span> <span class='ident'>Key</span>(<span class='string'>"foo"</span>));
<span class='ident'>stack</span>.<span class='ident'>push_key</span>(<span class='string'>"bar"</span>.<span class='ident'>to_string</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>len</span>() <span class='op'>==</span> <span class='number'>3</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>is_equal_to</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Key</span>(<span class='string'>"foo"</span>), <span class='ident'>Key</span>(<span class='string'>"bar"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>starts_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>starts_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Key</span>(<span class='string'>"foo"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>starts_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Key</span>(<span class='string'>"foo"</span>), <span class='ident'>Key</span>(<span class='string'>"bar"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>ends_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Key</span>(<span class='string'>"bar"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>ends_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Key</span>(<span class='string'>"foo"</span>), <span class='ident'>Key</span>(<span class='string'>"bar"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>ends_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Key</span>(<span class='string'>"foo"</span>), <span class='ident'>Key</span>(<span class='string'>"bar"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>stack</span>.<span class='ident'>last_is_index</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>get</span>(<span class='number'>0</span>) <span class='op'>==</span> <span class='ident'>Index</span>(<span class='number'>1</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>get</span>(<span class='number'>1</span>) <span class='op'>==</span> <span class='ident'>Key</span>(<span class='string'>"foo"</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>get</span>(<span class='number'>2</span>) <span class='op'>==</span> <span class='ident'>Key</span>(<span class='string'>"bar"</span>));
<span class='ident'>stack</span>.<span class='ident'>pop</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>len</span>() <span class='op'>==</span> <span class='number'>2</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>is_equal_to</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Key</span>(<span class='string'>"foo"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>starts_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Key</span>(<span class='string'>"foo"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>starts_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>ends_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Index</span>(<span class='number'>1</span>), <span class='ident'>Key</span>(<span class='string'>"foo"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>ends_with</span>(<span class='kw-2'>&</span>[<span class='ident'>Key</span>(<span class='string'>"foo"</span>)]));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>stack</span>.<span class='ident'>last_is_index</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>get</span>(<span class='number'>0</span>) <span class='op'>==</span> <span class='ident'>Index</span>(<span class='number'>1</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>stack</span>.<span class='ident'>get</span>(<span class='number'>1</span>) <span class='op'>==</span> <span class='ident'>Key</span>(<span class='string'>"foo"</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_to_json</span>() {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::{<span class='ident'>HashMap</span>,<span class='ident'>BTreeMap</span>};
<span class='kw'>use</span> <span class='kw'>super</span>::<span class='ident'>ToJson</span>;
<span class='kw'>let</span> <span class='ident'>array2</span> <span class='op'>=</span> <span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>(<span class='ident'>I64</span>(<span class='number'>1</span>), <span class='ident'>I64</span>(<span class='number'>2</span>)));
<span class='kw'>let</span> <span class='ident'>array3</span> <span class='op'>=</span> <span class='ident'>Array</span>(<span class='macro'>vec</span><span class='macro'>!</span>(<span class='ident'>I64</span>(<span class='number'>1</span>), <span class='ident'>I64</span>(<span class='number'>2</span>), <span class='ident'>I64</span>(<span class='number'>3</span>)));
<span class='kw'>let</span> <span class='ident'>object</span> <span class='op'>=</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>tree_map</span> <span class='op'>=</span> <span class='ident'>BTreeMap</span>::<span class='ident'>new</span>();
<span class='ident'>tree_map</span>.<span class='ident'>insert</span>(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='ident'>U64</span>(<span class='number'>1</span>));
<span class='ident'>tree_map</span>.<span class='ident'>insert</span>(<span class='string'>"b"</span>.<span class='ident'>to_string</span>(), <span class='ident'>U64</span>(<span class='number'>2</span>));
<span class='ident'>Object</span>(<span class='ident'>tree_map</span>)
};
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>array2</span>.<span class='ident'>to_json</span>(), <span class='ident'>array2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>object</span>.<span class='ident'>to_json</span>(), <span class='ident'>object</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>3_isize</span>.<span class='ident'>to_json</span>(), <span class='ident'>I64</span>(<span class='number'>3</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>4_i8</span>.<span class='ident'>to_json</span>(), <span class='ident'>I64</span>(<span class='number'>4</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>5_i16</span>.<span class='ident'>to_json</span>(), <span class='ident'>I64</span>(<span class='number'>5</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>6_i32</span>.<span class='ident'>to_json</span>(), <span class='ident'>I64</span>(<span class='number'>6</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>7_i64</span>.<span class='ident'>to_json</span>(), <span class='ident'>I64</span>(<span class='number'>7</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>8_usize</span>.<span class='ident'>to_json</span>(), <span class='ident'>U64</span>(<span class='number'>8</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>9_u8</span>.<span class='ident'>to_json</span>(), <span class='ident'>U64</span>(<span class='number'>9</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>10_u16</span>.<span class='ident'>to_json</span>(), <span class='ident'>U64</span>(<span class='number'>10</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>11_u32</span>.<span class='ident'>to_json</span>(), <span class='ident'>U64</span>(<span class='number'>11</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>12_u64</span>.<span class='ident'>to_json</span>(), <span class='ident'>U64</span>(<span class='number'>12</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>13.0_f32</span>.<span class='ident'>to_json</span>(), <span class='ident'>F64</span>(<span class='number'>13.0_f64</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='number'>14.0_f64</span>.<span class='ident'>to_json</span>(), <span class='ident'>F64</span>(<span class='number'>14.0_f64</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(().<span class='ident'>to_json</span>(), <span class='ident'>Null</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>f32</span>::<span class='ident'>INFINITY</span>.<span class='ident'>to_json</span>(), <span class='ident'>Null</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>f64</span>::<span class='ident'>NAN</span>.<span class='ident'>to_json</span>(), <span class='ident'>Null</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='bool-val'>true</span>.<span class='ident'>to_json</span>(), <span class='ident'>Boolean</span>(<span class='bool-val'>true</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='bool-val'>false</span>.<span class='ident'>to_json</span>(), <span class='ident'>Boolean</span>(<span class='bool-val'>false</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='string'>"abc"</span>.<span class='ident'>to_json</span>(), <span class='ident'>String</span>(<span class='string'>"abc"</span>.<span class='ident'>to_string</span>()));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='string'>"abc"</span>.<span class='ident'>to_string</span>().<span class='ident'>to_json</span>(), <span class='ident'>String</span>(<span class='string'>"abc"</span>.<span class='ident'>to_string</span>()));
<span class='macro'>assert_eq</span><span class='macro'>!</span>((<span class='number'>1</span>, <span class='number'>2</span>).<span class='ident'>to_json</span>(), <span class='ident'>array2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>((<span class='number'>1</span>, <span class='number'>2</span>, <span class='number'>3</span>).<span class='ident'>to_json</span>(), <span class='ident'>array3</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>([<span class='number'>1</span>, <span class='number'>2</span>].<span class='ident'>to_json</span>(), <span class='ident'>array2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>((<span class='kw-2'>&</span>[<span class='number'>1</span>, <span class='number'>2</span>, <span class='number'>3</span>]).<span class='ident'>to_json</span>(), <span class='ident'>array3</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>((<span class='macro'>vec</span><span class='macro'>!</span>[<span class='number'>1</span>, <span class='number'>2</span>]).<span class='ident'>to_json</span>(), <span class='ident'>array2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='macro'>vec</span><span class='macro'>!</span>(<span class='number'>1</span>, <span class='number'>2</span>, <span class='number'>3</span>).<span class='ident'>to_json</span>(), <span class='ident'>array3</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>tree_map</span> <span class='op'>=</span> <span class='ident'>BTreeMap</span>::<span class='ident'>new</span>();
<span class='ident'>tree_map</span>.<span class='ident'>insert</span>(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='number'>1</span> <span class='kw'>as</span> <span class='ident'>u32</span>);
<span class='ident'>tree_map</span>.<span class='ident'>insert</span>(<span class='string'>"b"</span>.<span class='ident'>to_string</span>(), <span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>tree_map</span>.<span class='ident'>to_json</span>(), <span class='ident'>object</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>hash_map</span> <span class='op'>=</span> <span class='ident'>HashMap</span>::<span class='ident'>new</span>();
<span class='ident'>hash_map</span>.<span class='ident'>insert</span>(<span class='string'>"a"</span>.<span class='ident'>to_string</span>(), <span class='number'>1</span> <span class='kw'>as</span> <span class='ident'>u32</span>);
<span class='ident'>hash_map</span>.<span class='ident'>insert</span>(<span class='string'>"b"</span>.<span class='ident'>to_string</span>(), <span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>hash_map</span>.<span class='ident'>to_json</span>(), <span class='ident'>object</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Some</span>(<span class='number'>15</span>).<span class='ident'>to_json</span>(), <span class='ident'>I64</span>(<span class='number'>15</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>Some</span>(<span class='number'>15</span> <span class='kw'>as</span> <span class='ident'>u32</span>).<span class='ident'>to_json</span>(), <span class='ident'>U64</span>(<span class='number'>15</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='prelude-val'>None</span>::<span class='op'><</span><span class='ident'>isize</span><span class='op'>></span>.<span class='ident'>to_json</span>(), <span class='ident'>Null</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_encode_hashmap_with_arbitrary_key</span>() {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::<span class='ident'>HashMap</span>;
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>PartialEq</span>, <span class='ident'>Eq</span>, <span class='ident'>Hash</span>, <span class='ident'>RustcEncodable</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>ArbitraryType</span>(<span class='ident'>u32</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>hm</span>: <span class='ident'>HashMap</span><span class='op'><</span><span class='ident'>ArbitraryType</span>, <span class='ident'>bool</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>HashMap</span>::<span class='ident'>new</span>();
<span class='ident'>hm</span>.<span class='ident'>insert</span>(<span class='ident'>ArbitraryType</span>(<span class='number'>1</span>), <span class='bool-val'>true</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>mem_buf</span> <span class='op'>=</span> <span class='ident'>string</span>::<span class='ident'>String</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>encoder</span> <span class='op'>=</span> <span class='ident'>Encoder</span>::<span class='ident'>new</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>mem_buf</span>);
<span class='kw'>let</span> <span class='ident'>result</span> <span class='op'>=</span> <span class='ident'>hm</span>.<span class='ident'>encode</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>encoder</span>);
<span class='kw'>match</span> <span class='ident'>result</span>.<span class='ident'>err</span>().<span class='ident'>unwrap</span>() {
<span class='ident'>EncoderError</span>::<span class='ident'>BadHashmapKey</span> <span class='op'>=></span> (),
_ <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(<span class='string'>"expected bad hash map key"</span>)
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_encode_decode_phantom_data</span>() {
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>marker</span>::<span class='ident'>PhantomData</span>;
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Debug</span>, <span class='ident'>RustcDecodable</span>, <span class='ident'>RustcEncodable</span>, <span class='ident'>Eq</span>, <span class='ident'>PartialEq</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>Foo</span><span class='op'><</span><span class='ident'>P</span><span class='op'>></span> {
<span class='ident'>phantom_data</span>: <span class='ident'>PhantomData</span><span class='op'><</span><span class='ident'>P</span><span class='op'>></span>
}
<span class='kw'>let</span> <span class='ident'>f</span>: <span class='ident'>Foo</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span> <span class='op'>=</span> <span class='ident'>Foo</span> {
<span class='ident'>phantom_data</span>: <span class='ident'>PhantomData</span>
};
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>encode</span>(<span class='kw-2'>&</span><span class='ident'>f</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>d</span>: <span class='ident'>Foo</span><span class='op'><</span><span class='ident'>u8</span><span class='op'>></span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='kw-2'>&</span><span class='ident'>s</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>f</span>, <span class='ident'>d</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_bad_json_stack_depleted</span>() {
<span class='kw'>use</span> <span class='ident'>json</span>;
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Debug</span>, <span class='ident'>RustcDecodable</span>)]</span>
<span class='kw'>enum</span> <span class='ident'>ChatEvent</span> {
<span class='ident'>Variant</span>(<span class='ident'>i32</span>)
}
<span class='kw'>let</span> <span class='ident'>serialized</span> <span class='op'>=</span> <span class='string'>"{\"variant\": \"Variant\", \"fields\": []}"</span>;
<span class='kw'>let</span> <span class='ident'>r</span>: <span class='prelude-ty'>Result</span><span class='op'><</span><span class='ident'>ChatEvent</span>, _<span class='op'>></span> <span class='op'>=</span> <span class='ident'>json</span>::<span class='ident'>decode</span>(<span class='ident'>serialized</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>r</span>.<span class='ident'>unwrap_err</span>() <span class='op'>==</span> <span class='ident'>EOF</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>fixed_length_array</span>() {
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Debug</span>, <span class='ident'>RustcDecodable</span>, <span class='ident'>RustcEncodable</span>, <span class='ident'>Eq</span>, <span class='ident'>PartialEq</span>)]</span>
<span class='kw'>struct</span> <span class='ident'>Foo</span> {
<span class='ident'>a</span>: [<span class='ident'>u8</span>; <span class='number'>1</span>],
<span class='ident'>b</span>: [<span class='ident'>i32</span>; <span class='number'>2</span>],
<span class='ident'>c</span>: [<span class='ident'>u64</span>; <span class='number'>3</span>],
}
<span class='kw'>let</span> <span class='ident'>f</span> <span class='op'>=</span> <span class='ident'>Foo</span> {
<span class='ident'>a</span>: [<span class='number'>0</span>],
<span class='ident'>b</span>: [<span class='number'>1</span>, <span class='number'>2</span>],
<span class='ident'>c</span>: [<span class='number'>3</span>, <span class='number'>4</span>, <span class='number'>5</span>],
};
<span class='kw'>let</span> <span class='ident'>s</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>encode</span>(<span class='kw-2'>&</span><span class='ident'>f</span>).<span class='ident'>unwrap</span>();
<span class='kw'>let</span> <span class='ident'>d</span> <span class='op'>=</span> <span class='kw'>super</span>::<span class='ident'>decode</span>(<span class='kw-2'>&</span><span class='ident'>s</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>f</span>, <span class='ident'>d</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_unexpected_token</span>() {
<span class='kw'>match</span> <span class='ident'>Json</span>::<span class='ident'>from_str</span>(<span class='string'>"{\"\":\"\",\"\":{\"\":\"\",\"\":[{\"\":\"\",}}}"</span>) {
<span class='prelude-val'>Err</span>(<span class='ident'>e</span>) <span class='op'>=></span> <span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>e</span>, <span class='ident'>SyntaxError</span>(<span class='ident'>InvalidSyntax</span>, <span class='number'>1</span>, <span class='number'>32</span>)),
_ <span class='op'>=></span> ()
};
}
}
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