090040bf40
for `~str`/`~[]`. Note that `~self` still remains, since I forgot to add support for `Box<self>` before the snapshot. How to update your code: * Instead of `~EXPR`, you should write `box EXPR`. * Instead of `~TYPE`, you should write `Box<Type>`. * Instead of `~PATTERN`, you should write `box PATTERN`. [breaking-change]
43 lines
1.0 KiB
Rust
43 lines
1.0 KiB
Rust
// Copyright 2014 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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// Check that we do not ICE when compiling this
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// macro, which reuses the expression `$id`
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#![feature(macro_rules)]
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struct Foo {
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a: int
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}
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pub enum Bar {
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Bar1, Bar2(int, Box<Bar>),
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}
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impl Foo {
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fn elaborate_stm(&mut self, s: Box<Bar>) -> Box<Bar> {
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macro_rules! declare(
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($id:expr, $rest:expr) => ({
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self.check_id($id);
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box Bar2($id, $rest)
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})
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);
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match s {
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box Bar2(id, rest) => declare!(id, self.elaborate_stm(rest)),
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_ => fail!()
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}
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}
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fn check_id(&mut self, s: int) { fail!() }
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}
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pub fn main() { }
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