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.
39 lines
630 B
Rust
39 lines
630 B
Rust
// compile-flags: --crate-type lib
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#![deny(missing_debug_implementations)]
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#![allow(unused)]
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use std::fmt;
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pub enum A {} //~ ERROR type does not implement `Debug`
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#[derive(Debug)]
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pub enum B {}
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pub enum C {}
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impl fmt::Debug for C {
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fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
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Ok(())
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}
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}
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pub struct Foo; //~ ERROR type does not implement `Debug`
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#[derive(Debug)]
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pub struct Bar;
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pub struct Baz;
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impl fmt::Debug for Baz {
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fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
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Ok(())
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}
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}
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struct PrivateStruct;
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enum PrivateEnum {}
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#[derive(Debug)]
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struct GenericType<T>(T);
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