56 lines
1.7 KiB
Rust
56 lines
1.7 KiB
Rust
// Copyright 2012 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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// Testing that method lookup automatically both borrows vectors to slices
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// and also references them to create the &self pointer
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trait MyIter {
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fn test_imm(&self);
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fn test_const(&const self);
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}
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impl<'self> MyIter for &'self [int] {
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fn test_imm(&self) { assert_eq!(self[0], 1) }
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fn test_const(&const self) { assert_eq!(self[0], 1) }
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}
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impl<'self> MyIter for &'self str {
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fn test_imm(&self) { assert_eq!(*self, "test") }
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fn test_const(&const self) { assert_eq!(self[0], 't' as u8) }
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}
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pub fn main() {
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// NB: Associativity of ~, etc. in this context is surprising. These must be parenthesized
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([1]).test_imm();
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(~[1]).test_imm();
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(@[1]).test_imm();
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(&[1]).test_imm();
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("test").test_imm();
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(~"test").test_imm();
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(@"test").test_imm();
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(&"test").test_imm();
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// XXX: Other types of mutable vecs don't currently exist
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([1]).test_const();
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(~[1]).test_const();
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(@[1]).test_const();
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(&[1]).test_const();
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("test").test_const();
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(~"test").test_const();
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(@"test").test_const();
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(&"test").test_const();
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// NB: We don't do this double autoreffing for &mut self because that would
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// allow creating a mutable pointer to a temporary, which would be a source
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// of confusion
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}
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