rust/compiler/rustc_session/src
Dan Aloni 07e7823c01 pretty: trim paths of unique symbols
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.
2020-09-02 22:26:37 +03:00
..
lint mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
cgu_reuse_tracker.rs mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
code_stats.rs mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
config.rs pretty: trim paths of unique symbols 2020-09-02 22:26:37 +03:00
filesearch.rs mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
lib.rs datastructures: replace once_cell crate with an impl from std 2020-08-30 20:06:14 +01:00
lint.rs mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
options.rs pretty: trim paths of unique symbols 2020-09-02 22:26:37 +03:00
output.rs mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
parse.rs mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
search_paths.rs mv compiler to compiler/ 2020-08-30 18:45:07 +03:00
session.rs rustc_{errors,session}: add delay_good_path_bug 2020-09-02 10:43:17 +03:00
utils.rs mv compiler to compiler/ 2020-08-30 18:45:07 +03:00