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Include span label in rust lints (#601) 

* Include span label in rust lints

This turns relatively unhelpful error messages like

    mismatched types

into more expressive messages along the lines of

    mismatched types: expected bool, found integral variable

Fixes #597.

* Exclude rust lint span label if empty

* Use single-quoted strings in vimscript

* Add test for detailed rust errors

* Prune Cargo JSON

* Use matching error file name

* Byte offsets not char offsets
This commit is contained in:
Jon Gjengset 2017-05-31 13:16:49 -04:00 committed by w0rp
parent 42efd51723
commit 88948e0ee3
2 changed files with 20 additions and 1 deletions
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2
autoload/ale/handlers/rust.vim
View File

@ -55,7 +55,7 @@ function! ale#handlers#rust#HandleRustErrorsForFile(buffer, full_filename, lines
\ 'end_lnum': l:span.line_end,
\ 'col': l:span.byte_start,
\ 'end_col': l:span.byte_end,
\ 'text': l:error.message,
\ 'text': empty(l:span.label) ? l:error.message : printf('%s: %s', l:error.message, l:span.label),
\ 'type': toupper(l:error.level[0]),
\})
else

19
test/handler/test_rust_handler.vader
View File

@ -55,6 +55,25 @@ Execute(The Rust handler should handle cargo output):
\ '{"message":{"children":[],"code":null,"level":"error","message":"aborting due to previous error","rendered":null,"spans":[]},"package_id":"update 0.0.1 (path+file:///home/w0rp/Downloads/rust-by-example)","reason":"compiler-message","target":{"kind":["bin"],"name":"update","src_path":"/home/w0rp/Downloads/rust-by-example/src/main.rs"}}',
\ ])
Execute(The Rust handler should show detailed errors):
AssertEqual
\ [
\ {
\ 'lnum': 4,
\ 'end_lnum': 4,
\ 'type': 'E',
\ 'col': 52,
\ 'end_col': 54,
\ 'text': 'mismatched types: expected bool, found integral variable',
\ },
\ ],
\ ale#handlers#rust#HandleRustErrorsForFile(347, 'src/playpen.rs', [
\ '',
\ 'ignore this',
\ '{"message":{"children":[],"code":null,"level":"error","message":"mismatched types","rendered":null,"spans":[{"byte_end":54,"byte_start":52,"column_end":23,"column_start":21,"expansion":null,"file_name":"src/playpen.rs","is_primary":true,"label":"expected bool, found integral variable","line_end":4,"line_start":4,"suggested_replacement":null,"text":[{"highlight_end":23,"highlight_start":21,"text":" let foo: bool = 42;"}]}]},"package_id":"ale-rust-details 0.1.1 (path+file:///home/jon/tmp/ale-rust-details)","reason":"compiler-message","target":{"crate_types":["bin"],"kind":["bin"],"name":"ale-rust-details","src_path":"/home/jon/tmp/ale-rust-details/src/main.rs"}}',
\ '{"message":{"children":[],"code":null,"level":"error","message":"aborting due to previous error(s)","rendered":null,"spans":[]},"package_id":"ale-rust-details 0.1.1 (path+file:///home/jon/tmp/ale-rust-details)","reason":"compiler-message","target":{"crate_types":["bin"],"kind":["bin"],"name":"ale-rust-details","src_path":"/home/jon/tmp/ale-rust-details/src/main.rs"}}',
\ ])
Execute(The Rust handler should find correct files):
AssertEqual
\ [],