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1 | // Copyright 2016 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
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11 | // no-prefer-dynamic |
12 | ||
13 | #![crate_type = "proc-macro"] | |
94b46f34 | 14 | #![feature(proc_macro, proc_macro_non_items)] |
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15 | |
16 | extern crate proc_macro; | |
17 | ||
83c7162d | 18 | use proc_macro::*; |
9e0c209e | 19 | |
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20 | #[proc_macro_attribute] |
21 | pub fn attr_tru(_attr: TokenStream, item: TokenStream) -> TokenStream { | |
22 | let name = item.into_iter().skip(1).next().unwrap(); | |
23 | quote!(fn $name() -> bool { true }) | |
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24 | } |
25 | ||
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26 | #[proc_macro_attribute] |
27 | pub fn attr_identity(_attr: TokenStream, item: TokenStream) -> TokenStream { | |
cc61c64b | 28 | quote!($item) |
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29 | } |
30 | ||
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31 | #[proc_macro] |
32 | pub fn tru(_ts: TokenStream) -> TokenStream { | |
cc61c64b | 33 | quote!(true) |
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34 | } |
35 | ||
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36 | #[proc_macro] |
37 | pub fn ret_tru(_ts: TokenStream) -> TokenStream { | |
cc61c64b | 38 | quote!(return true;) |
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39 | } |
40 | ||
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41 | #[proc_macro] |
42 | pub fn identity(ts: TokenStream) -> TokenStream { | |
cc61c64b | 43 | quote!($ts) |
9e0c209e | 44 | } |