08c77a6eb4
"no method" errors on standard library types
The standard library developer can annotate methods on e.g.
`BTreeSet::push` with `#[rustc_confusables("insert")]`. When the user
mistypes `btreeset.push()`, `BTreeSet::insert` will be suggested if
there are no other candidates to suggest.
48 lines
1.2 KiB
Rust
48 lines
1.2 KiB
Rust
// aux-build: rustc_confusables_across_crate.rs
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#![feature(rustc_attrs)]
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extern crate rustc_confusables_across_crate;
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use rustc_confusables_across_crate::BTreeSet;
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fn main() {
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// Misspellings (similarly named methods) take precedence over `rustc_confusables`.
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let x = BTreeSet {};
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x.inser();
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//~^ ERROR no method named
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//~| HELP there is a method with a similar name
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x.foo();
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//~^ ERROR no method named
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x.push();
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//~^ ERROR no method named
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//~| HELP you might have meant to use `insert`
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x.test();
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//~^ ERROR no method named
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x.pulled();
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//~^ ERROR no method named
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//~| HELP there is a method with a similar name
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}
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struct Bar;
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impl Bar {
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#[rustc_confusables()]
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//~^ ERROR expected at least one confusable name
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fn baz() {}
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#[rustc_confusables]
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//~^ ERROR malformed `rustc_confusables` attribute input
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//~| HELP must be of the form
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fn qux() {}
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#[rustc_confusables(invalid_meta_item)]
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//~^ ERROR expected a quoted string literal
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//~| HELP consider surrounding this with quotes
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fn quux() {}
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}
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#[rustc_confusables("blah")]
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//~^ ERROR attribute should be applied to an inherent method
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fn not_inherent_impl_method() {}
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