45 lines
1.1 KiB
Rust
45 lines
1.1 KiB
Rust
// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// no-prefer-dynamic
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#![crate_type = "proc-macro"]
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#![feature(proc_macro_non_items)]
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extern crate proc_macro;
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use proc_macro::*;
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#[proc_macro_attribute]
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pub fn attr_tru(_attr: TokenStream, item: TokenStream) -> TokenStream {
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let name = item.into_iter().skip(1).next().unwrap();
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quote!(fn $name() -> bool { true })
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}
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#[proc_macro_attribute]
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pub fn attr_identity(_attr: TokenStream, item: TokenStream) -> TokenStream {
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quote!($item)
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}
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#[proc_macro]
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pub fn tru(_ts: TokenStream) -> TokenStream {
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quote!(true)
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}
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#[proc_macro]
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pub fn ret_tru(_ts: TokenStream) -> TokenStream {
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quote!(return true;)
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}
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#[proc_macro]
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pub fn identity(ts: TokenStream) -> TokenStream {
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quote!($ts)
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}
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