30 lines
872 B
Rust
30 lines
872 B
Rust
// Copyright 2013 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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#![feature(macro_rules)]
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macro_rules! print_hd_tl (
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($field_hd:ident, $($field_tl:ident),+) => ({
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print!("{}", stringify!($field)); //~ ERROR unknown macro variable
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print!("::[");
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$(
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print!("{}", stringify!($field_tl));
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print!(", ");
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)+
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// FIXME: #9970
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print!("{}", "]\n");
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})
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)
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fn main() {
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print_hd_tl!(x, y, z, w)
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}
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