| // Copyright 2018 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // ignore-stage1 |
| |
| #![crate_type="proc-macro"] |
| #![crate_name="some_macros"] |
| |
| extern crate proc_macro; |
| |
| use proc_macro::TokenStream; |
| |
| // @has some_macros/index.html |
| // @has - '//h2' 'Macros' |
| // @has - '//h2' 'Attribute Macros' |
| // @has - '//h2' 'Derive Macros' |
| // @!has - '//h2' 'Functions' |
| |
| // @has some_macros/all.html |
| // @has - '//a[@href="macro.some_proc_macro.html"]' 'some_proc_macro' |
| // @has - '//a[@href="attr.some_proc_attr.html"]' 'some_proc_attr' |
| // @has - '//a[@href="derive.SomeDerive.html"]' 'SomeDerive' |
| // @!has - '//a/@href' 'fn.some_proc_macro.html' |
| // @!has - '//a/@href' 'fn.some_proc_attr.html' |
| // @!has - '//a/@href' 'fn.some_derive.html' |
| |
| // @has some_macros/index.html '//a/@href' 'macro.some_proc_macro.html' |
| // @!has - '//a/@href' 'fn.some_proc_macro.html' |
| // @has some_macros/macro.some_proc_macro.html |
| // @!has some_macros/fn.some_proc_macro.html |
| /// a proc-macro that swallows its input and does nothing. |
| #[proc_macro] |
| pub fn some_proc_macro(_input: TokenStream) -> TokenStream { |
| TokenStream::new() |
| } |
| |
| // @has some_macros/index.html '//a/@href' 'attr.some_proc_attr.html' |
| // @!has - '//a/@href' 'fn.some_proc_attr.html' |
| // @has some_macros/attr.some_proc_attr.html |
| // @!has some_macros/fn.some_proc_attr.html |
| /// a proc-macro attribute that passes its item through verbatim. |
| #[proc_macro_attribute] |
| pub fn some_proc_attr(_attr: TokenStream, item: TokenStream) -> TokenStream { |
| item |
| } |
| |
| // @has some_macros/index.html '//a/@href' 'derive.SomeDerive.html' |
| // @!has - '//a/@href' 'fn.some_derive.html' |
| // @has some_macros/derive.SomeDerive.html |
| // @!has some_macros/fn.some_derive.html |
| /// a derive attribute that adds nothing to its input. |
| #[proc_macro_derive(SomeDerive)] |
| pub fn some_derive(_item: TokenStream) -> TokenStream { |
| TokenStream::new() |
| } |
