Make call suggestions more general and more accurate #101100
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| // This test case checks the behavior of typeck::check::method::suggest::is_fn on Ty::Error. | |||
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| struct Foo; | |||
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Had to fix this test since we no longer say "perhaps you wish to call it" on a method that doesn't exist.
| @@ -6,7 +6,7 @@ enum Foo{ | |||
| Tup() | |||
| } | |||
| impl Foo { | |||
| fn foo() { } | |||
| fn foo(&self) { } | |||
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Had to fix this test because the suggestion makes no sense without it
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| self.flags | ||
| .treat_err_as_bug | ||
| .map_or(false, |c| self.err_count() + self.lint_err_count >= c.get()) | ||
| self.flags.treat_err_as_bug.map_or(false, |c| { |
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Well, I didn't mean to include this, but this is a fix to -Ztreat-err-as-bug which doesn't count delayed bugs correctly. I can remove it and put it into another PR if needed.
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detailed explanation: If we emit an error A, delay a bug B, then emit error C. Then:
- running
-Ztreat-err-as-bug=1will make it ICE on A. - running
-Ztreat-err-as-bug=2will make it ICE on B. - running
-Ztreat-err-as-bug=3will skip over B and will make rust skip over C.
So there's literally no value N such that -Ztreat-err-as-bug=N will properly work to catch C. We add the delayed good path and span bugs into the count here so this works properly now.
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…ggestions, r=petrochenkov Make call suggestions more general and more accurate Cleans up some suggestions that have to do with adding `()` to make typeck happy. 1. Drive-by rename of `expr_t` to `base_ty` since it's the type of the `base_expr` 1. Autoderef until we get to a callable type in `suggest_fn_call`. 1. Don't erroneously suggest calling constructor when a method/field does not exist on it. 1. Suggest calling a method receiver if its function output has a method (e.g. `fn.method()` => `fn().method()`) 1. Extend call suggestions to type parameters, fn pointers, trait objects where possible 1. Suggest calling in operators too (fixes rust-lang#101054) 1. Use `/* {ty} */` as argument placeholder instead of just `_`, which is confusing and makes suggestions look less like `if let` syntax.
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…iaskrgr Rollup of 8 pull requests Successful merges: - rust-lang#100970 (Allow deriving multipart suggestions) - rust-lang#100984 (Reinstate preloading of some dll imports) - rust-lang#101011 (Use getentropy when possible on all Apple platforms) - rust-lang#101025 (Add tier-3 support for powerpc64 and riscv64 openbsd) - rust-lang#101049 (Remove span fatal from ast lowering) - rust-lang#101100 (Make call suggestions more general and more accurate) - rust-lang#101171 (Fix UB from misalignment and provenance widening in `std::sys::windows`) - rust-lang#101185 (Tweak `WellFormedLoc`s a bit) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Cleans up some suggestions that have to do with adding
()to make typeck happy.expr_ttobase_tysince it's the type of thebase_exprsuggest_fn_call.fn.method()=>fn().method())size_ofwhen it is missing parens in a comparison #101054)/* {ty} */as argument placeholder instead of just_, which is confusing and makes suggestions look less likeif letsyntax.