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

//! # mattro-rs
//!
//! `mattro` is a **proc_macro** attribute parser for Rust.
//!
//! ## Usage
//! Add this to your Cargo.toml:
//! ```
//! [dependencies]
//! mattro = "0.1.2"
//! ```
//!
//! You can parse:
//! - `Attribute` using `MacroAttribute::new(attribute)`
//! - `AttributeArgs` using `MacroAttribute::from_attribute_args(path, args, style)`
//!
//! ## Example
//! Parsing `AttributeArgs`:
//!
//! `main.rs`
//! ```rust
//! #[my_attribute(text="some text", number=120, array=1,2,3)]
//! fn main() {}
//! ```
//!
//! `lib.rs`
//! ```rust
//! use mattro::MacroAttribute;
//! use proc_macro::TokenStream;
//!
//! #[proc_macro_attribute]
//! pub fn my_attribute(attribute: TokenStream, item: TokenStream) -> TokenStream {
//!     let tokens = attribute.clone();
//!     let attribute_args: syn::AttributeArgs = syn::parse_macro_input!(tokens);
//!
//!     // Creates a `MacroAttribute` from `AttributeArgs`.
//!     let attr = MacroAttribute::from_attribute_args(
//!         // Path of the attribute
//!         "my_attribute",
//!
//!         // The `AttributeArgs`
//!         attribute_args,
//!
//!         // The attribute style `inner` or `outer`
//!         syn::AttrStyle::Outer
//!     );
//!
//!     // Prints all the `MetaItem`s
//!     for meta_item in &attr {
//!         println!("{:#?}", meta_item);
//!     }
//!
//!     // Returns the decorated item
//!     item
//! }
//! ```
//!
//! This prints out:
//! ```scala
//! NameValue(
//!     NameValue {
//!         name: "text",
//!         value: Literal(
//!             Str(
//!                 LitStr {
//!                     token: "some text",
//!                 },
//!             ),
//!         ),
//!     },
//! )
//! NameValue(
//!     NameValue {
//!         name: "number",
//!         value: Literal(
//!             Int(
//!                 LitInt {
//!                     token: 120,
//!                 },
//!             ),
//!         ),
//!     },
//! )
//! NameValue(
//!     NameValue {
//!         name: "array",
//!         value: Array(
//!             [
//!                 Int(
//!                     LitInt {
//!                         token: 1,
//!                     },
//!                 ),
//!                 Int(
//!                     LitInt {
//!                         token: 2,
//!                     },
//!                 ),
//!                 Int(
//!                     LitInt {
//!                         token: 3,
//!                     },
//!                 ),
//!             ],
//!         ),
//!     },
//! )
//! ```
//!
//! ### You could convert the attribute into a `name-value` pairs
//!
//! ```rust
//! // Converts the attribute into a `name-value` attribute
//! let name_values_attributes = attr.into_name_values().unwrap();
//!
//! // Iterate over the `name-value` pairs
//! for (name, value) in &name_values_attributes {
//!     println!("{:7} => {}", name, value);
//! }
//! ```
//!
//! This prints out:
//! ```js
//! text    => "some text"
//! number  => 120
//! array   => [1, 2, 3]
//! ```

mod macro_attr;
mod name_value_attr;
mod visitor;
mod name_value;

pub use crate::{
    macro_attr::*,
    name_value_attr::*,
    name_value::*
};