pest_generator/
macros.rs

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
10macro_rules! insert_builtin {
11    ($builtin: expr, $name: ident, $pattern: expr) => {
12        $builtin.push((stringify!($name), generate_rule!($name, $pattern)));
13    };
14}
15
16#[cfg(feature = "std")]
17macro_rules! generate_rule {
18    ($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                $pattern
24            }
25        }
26    }
27}
28
29#[cfg(not(feature = "std"))]
30macro_rules! generate_rule {
31    ($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}