32 lines
894 B
Rust
32 lines
894 B
Rust
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// 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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// force-host
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// no-prefer-dynamic
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#![feature(rustc_macro)]
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#![feature(rustc_macro_lib)]
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#![crate_type = "rustc-macro"]
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extern crate rustc_macro;
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use rustc_macro::TokenStream;
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#[rustc_macro_derive(Append)]
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pub fn derive_a(input: TokenStream) -> TokenStream {
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let mut input = input.to_string();
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input.push_str("
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impl Append for A {
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fn foo(&self) {}
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}
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");
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input.parse().unwrap()
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}
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