b4bbf3a88d
Also change several error messages to refer to "items" rather than "methods", since associated items that require resolution during type checking are not always methods.
88 lines
2.3 KiB
Rust
88 lines
2.3 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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// Test the mechanism for warning about possible missing `self` declarations.
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trait CtxtFn {
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fn f8(self, usize) -> usize;
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fn f9(usize) -> usize; //~ NOTE candidate
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}
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trait OtherTrait {
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fn f9(usize) -> usize; //~ NOTE candidate
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}
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// Note: this trait is not implemented, but we can't really tell
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// whether or not an impl would match anyhow without a self
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// declaration to match against, so we wind up prisizeing it as a
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// candidate. This seems not unreasonable -- perhaps the user meant to
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// implement it, after all.
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trait UnusedTrait {
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fn f9(usize) -> usize; //~ NOTE candidate
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}
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impl CtxtFn for usize {
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fn f8(self, i: usize) -> usize {
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i * 4
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}
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fn f9(i: usize) -> usize {
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i * 4
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}
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}
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impl OtherTrait for usize {
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fn f9(i: usize) -> usize {
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i * 8
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}
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}
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struct Myisize(isize);
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impl Myisize {
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fn fff(i: isize) -> isize { //~ NOTE candidate
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i
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}
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}
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trait ManyImplTrait {
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fn is_str() -> bool { //~ NOTE candidate
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false
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}
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}
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impl ManyImplTrait for String {
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fn is_str() -> bool {
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true
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}
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}
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impl ManyImplTrait for usize {}
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impl ManyImplTrait for isize {}
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impl ManyImplTrait for char {}
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impl ManyImplTrait for Myisize {}
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fn no_param_bound(u: usize, m: Myisize) -> usize {
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u.f8(42) + u.f9(342) + m.fff(42)
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//~^ ERROR no method named `f9` found for type `usize` in the current scope
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//~^^ NOTE found defined static methods, maybe a `self` is missing?
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//~^^^ ERROR no method named `fff` found for type `Myisize` in the current scope
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//~^^^^ NOTE found defined static methods, maybe a `self` is missing?
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}
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fn param_bound<T: ManyImplTrait>(t: T) -> bool {
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t.is_str()
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//~^ ERROR no method named `is_str` found for type `T` in the current scope
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//~^^ NOTE found defined static methods, maybe a `self` is missing?
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}
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fn main() {
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}
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