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tests: add two new run-pass tests for method behavior after UFCS.
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// Copyright 2015 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. | ||
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// Ensure that an user-defined type admits multiple inherent methods | ||
// with the same name, which can be called on values that have a | ||
// precise enough type to allow distinguishing between the methods. | ||
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struct Foo<T>(T); | ||
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impl Foo<usize> { | ||
fn bar(&self) -> i32 { self.0 as i32 } | ||
} | ||
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impl Foo<isize> { | ||
fn bar(&self) -> i32 { -(self.0 as i32) } | ||
} | ||
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fn main() { | ||
let foo_u = Foo::<usize>(5); | ||
assert_eq!(foo_u.bar(), 5); | ||
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let foo_i = Foo::<isize>(3); | ||
assert_eq!(foo_i.bar(), -3); | ||
} |
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// Copyright 2015 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. | ||
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struct Foo; | ||
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trait Trait { | ||
fn bar(&self); | ||
} | ||
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// Inherent impls should be preferred over trait ones. | ||
impl Foo { | ||
fn bar(&self) {} | ||
} | ||
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impl Trait { | ||
fn baz(_: &Foo) {} | ||
} | ||
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impl Trait for Foo { | ||
fn bar(&self) { panic!("wrong method called!") } | ||
} | ||
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fn main() { | ||
Foo.bar(); | ||
Foo::bar(&Foo); | ||
<Foo>::bar(&Foo); | ||
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// Should work even if Trait::baz doesn't exist. | ||
// N.B: `<Trait>::bar` would be ambiguous. | ||
<Trait>::baz(&Foo); | ||
} |