6a66b32270
Refactor compare_impl_method into its own file. Modify the code to stop comparing individual parameter bounds. Instead we now use the predicates list attached to the trait and implementation generics. This ensures consistency even when bounds are declared in different places (i.e on a parameter vs. in a where clause).
34 lines
977 B
Rust
34 lines
977 B
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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// Issue #5886: a complex instance of issue #2687.
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trait Iterator<A> {
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fn next(&mut self) -> Option<A>;
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}
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trait IteratorUtil<A> {
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fn zip<B, U: Iterator<U>>(self, other: U) -> ZipIterator<Self, U>;
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}
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impl<A, T: Iterator<A>> IteratorUtil<A> for T {
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fn zip<B, U: Iterator<B>>(self, other: U) -> ZipIterator<T, U> {
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//~^ ERROR the requirement `U : Iterator<B>` appears on the impl method
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ZipIterator{a: self, b: other}
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}
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}
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struct ZipIterator<T, U> {
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a: T, b: U
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}
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fn main() {}
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