1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158

//! Json String Literal Generator
//!
//! Write json with Rust syntax instead of hard to read inline strings.
//! This crate doesn't evaluate any expressions, it just converts a Rust _token tree_ into a
//! minified json string.
//!
//! # Usage
//!
//! This crate is on [crates.io](https://crates.io/crates/json_str).
//!
//! There are two ways to reference `json_str` in your projects, depending on whether you're on
//! the `stable`/`beta` or `nightly` channels.
//!
//! ## Stable
//!
//! To get started, add `json_str` to your `Cargo.toml`:
//!
//! ```ignore
//! [dependencies]
//! json_str = "*"
//! ```
//!
//! And reference it in your crate root:
//!
//! ```ignore
//! #[macro_use]
//! extern crate json_str;
//! ```
//!
//! ## Nightly
//!
//! To get started, add `json_str` to your `Cargo.toml`:
//!
//! ```ignore
//! [dependencies]
//! json_str = { version = "*", features = "nightly" }
//! ```
//!
//! And reference it in your crate root:
//!
//! ```ignore
//! #![feature(plugin)]
//! #![plugin(json_str)]
//! ```
//!
//! If you're on the `nightly` channel, it's better to use the above `plugin` version with the `nightly`
//! feature because the conversion and sanitisation takes place at compile-time instead of runtime,
//! saving precious runtime cycles.
//!
//! ## Examples
//!
//! The `json_str!` macro will take an inline token tree and return a sanitised json `String`:
//!
//! ```
//! # #![feature(plugin)]
//! # #![plugin(json_str)]
//! # fn main() {
//! let json = json_str!({
//! 	"query": {
//! 		"filtered": {
//! 			"query": {
//! 				"match_all": {}
//! 			},
//! 			"filter": {
//! 				"geo_distance": {
//! 					"distance": "20km",
//! 					"location": {
//! 						"lat": 37.776,
//! 						"lon": -122.41
//! 					}
//! 				}
//! 			}
//! 		}
//! 	}
//! });
//! # }
//! ```
//!
//! This will also work for unquoted keys for something a bit more `rusty`:
//!
//! ```
//! # #![feature(plugin)]
//! # #![plugin(json_str)]
//! # fn main() {
//! let json = json_str!({
//! 	query: {
//! 		filtered: {
//! 			query: {
//! 				match_all: {}
//! 			},
//! 			filter: {
//! 				geo_distance: {
//! 					distance: "20km",
//! 					location: {
//! 						lat: 37.776,
//! 						lon: -122.41
//! 					}
//! 				}
//! 			}
//! 		}
//! 	}
//! });
//! # }
//! ```
//!
//! On `nightly`, there's an additional plugin called `json_lit` that returns a `&'static str`
//! instead of a `String`, so you can avoid allocating each time. The syntax is otherwise the same
//! as `json_str`:
//!
//! ```
//! # #![feature(plugin)]
//! # #![plugin(json_str)]
//! # fn main() {
//! let json = json_lit!({
//! 	"query": {
//! 		"filtered": {
//! 			"query": {
//! 				"match_all": {}
//! 			},
//! 			"filter": {
//! 				"geo_distance": {
//! 					"distance": "20km",
//! 					"location": {
//! 						"lat": 37.776,
//! 						"lon": -122.41
//! 					}
//! 				}
//! 			}
//! 		}
//! 	}
//! });
//! # }
//! ```
//!
//! For json values that can't be fully determined at compile-time,
//! use [json_macros](https://github.com/tomjakubowski/json_macros) instead.

#![doc(html_root_url = "http://kodraus.github.io/rustdoc/json_str/")]
#![cfg_attr(feature = "nightly", crate_type="dylib")]
#![cfg_attr(feature = "nightly", feature(plugin_registrar, rustc_private, quote, plugin, stmt_expr_attributes))]

#[doc(hidden)]
pub mod parse;

#[cfg(feature = "nightly")]
include!("lib.rs.in");

#[cfg_attr(not(feature = "nightly"), macro_export)]
#[cfg(not(feature = "nightly"))]
macro_rules! json_str {
	($j:tt) => ({
		let json_raw = stringify!($j);
		let mut json = String::with_capacity(json_raw.len());
		$crate::parse::sanitise(json_raw.as_bytes(), &mut json);

		json
	})
}