rust/src/test/run-pass/macro-meta-items.rs
2015-03-15 09:08:21 -07:00

41 lines
973 B
Rust

// Copyright 2013-2014 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-pretty - token trees can't pretty print
// compile-flags: --cfg foo
macro_rules! compiles_fine {
($at:meta) => {
#[cfg($at)]
static MISTYPED: () = "foo";
}
}
macro_rules! emit {
($at:meta) => {
#[cfg($at)]
static MISTYPED: &'static str = "foo";
}
}
// item
compiles_fine!(bar);
emit!(foo);
fn foo() {
println!("{}", MISTYPED);
}
pub fn main() {
// statement
compiles_fine!(baz);
emit!(baz);
println!("{}", MISTYPED);
}