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// 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. | ||
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// no-prefer-dynamic | ||
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#![crate_type="proc-macro"] | ||
#![crate_name="some_macros"] | ||
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extern crate proc_macro; | ||
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use proc_macro::TokenStream; | ||
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/// a proc-macro that swallows its input and does nothing. | ||
#[proc_macro] | ||
pub fn some_proc_macro(_input: TokenStream) -> TokenStream { | ||
TokenStream::new() | ||
} | ||
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/// a proc-macro attribute that passes its item through verbatim. | ||
#[proc_macro_attribute] | ||
pub fn some_proc_attr(_attr: TokenStream, item: TokenStream) -> TokenStream { | ||
item | ||
} | ||
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/// a derive attribute that adds nothing to its input. | ||
#[proc_macro_derive(SomeDerive)] | ||
pub fn some_derive(_item: TokenStream) -> TokenStream { | ||
TokenStream::new() | ||
} | ||
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// 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. | ||
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// ignore-stage1 | ||
// aux-build:proc_macro.rs | ||
// build-aux-docs | ||
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// FIXME: if/when proc-macros start exporting their doc attributes across crates, we can turn on | ||
// cross-crate inlining for them | ||
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extern crate some_macros; | ||
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// @has proc_macro/index.html | ||
// @has - '//a/@href' '../some_macros/macro.some_proc_macro.html' | ||
// @has - '//a/@href' '../some_macros/attr.some_proc_attr.html' | ||
// @has - '//a/@href' '../some_macros/derive.SomeDerive.html' | ||
// @!has proc_macro/macro.some_proc_macro.html | ||
// @!has proc_macro/attr.some_proc_attr.html | ||
// @!has proc_macro/derive.SomeDerive.html | ||
pub use some_macros::{some_proc_macro, some_proc_attr, SomeDerive}; |