07e7823c01
If a symbol name can only be imported from one place for a type, and as long as it was not glob-imported anywhere in the current crate, we can trim its printed path and print only the name. This has wide implications on error messages with types, for example, shortening `std::vec::Vec` to just `Vec`, as long as there is no other `Vec` importable anywhere. This adds a new '-Z trim-diagnostic-paths=false' option to control this feature. On the good path, with no diagnosis printed, we should try to avoid issuing this query, so we need to prevent trimmed_def_paths query on several cases. This change also relies on a previous commit that differentiates between `Debug` and `Display` on various rustc types, where the latter is trimmed and presented to the user and the former is not.
22 lines
385 B
Rust
22 lines
385 B
Rust
// Be smart about span of parenthesized expression in macro.
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macro_rules! paren {
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($e:expr) => (($e))
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// ^^^^ do not highlight here
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}
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mod m {
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pub struct S {
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x: i32
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}
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pub fn make() -> S {
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S { x: 0 }
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}
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}
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fn main() {
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let s = m::make();
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paren!(s.x); //~ ERROR field `x` of struct `S` is private
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// ^^^ highlight here
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}
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