1 // pest. The Elegant Parser
2 // Copyright (c) 2018 Dragoș Tiselice
3 //
4 // Licensed under the Apache License, Version 2.0
5 // <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
6 // license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
7 // option. All files in the project carrying such notice may not be copied,
8 // modified, or distributed except according to those terms.
9 
10 macro_rules! insert_builtin {
11     ($builtin: expr, $name: ident, $pattern: expr) => {
12         $builtin.push((stringify!($name), generate_rule!($name, $pattern)));
13     };
14 }
15 
16 #[cfg(feature = "std")]
17 macro_rules! generate_rule {
18     ($name: ident, $pattern: expr) => {
19         quote! {
20             #[inline]
21             #[allow(dead_code, non_snake_case, unused_variables)]
22             pub fn $name(state: ::std::boxed::Box<::pest::ParserState<'_, Rule>>) -> ::pest::ParseResult<::std::boxed::Box<::pest::ParserState<'_, Rule>>> {
23                 $pattern
24             }
25         }
26     }
27 }
28 
29 #[cfg(not(feature = "std"))]
30 macro_rules! generate_rule {
31     ($name: ident, $pattern: expr) => {
32         quote! {
33             #[inline]
34             #[allow(dead_code, non_snake_case, unused_variables)]
35             pub fn $name(state: ::alloc::boxed::Box<::pest::ParserState<'_, Rule>>) -> ::pest::ParseResult<::alloc::boxed::Box<::pest::ParserState<'_, Rule>>> {
36                 $pattern
37             }
38         }
39     }
40 }
41