99 lines
3.2 KiB
VimL
99 lines
3.2 KiB
VimL
" Author: Daniel Schemala <istjanichtzufassen@gmail.com>
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" Description: rustc for rust files
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if !exists('g:ale_rust_ignore_error_codes')
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let g:ale_rust_ignore_error_codes = []
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endif
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function! ale_linters#rust#rustc#HandleRustcErrors(buffer_number, errorlines) abort
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let l:file_name = fnamemodify(bufname(a:buffer_number), ':t')
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let l:output = []
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for l:errorline in a:errorlines
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" ignore everything that is not Json
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if l:errorline !~# '^{'
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continue
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endif
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let l:error = json_decode(l:errorline)
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if !empty(l:error.code) && index(g:ale_rust_ignore_error_codes, l:error.code.code) > -1
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continue
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endif
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for l:span in l:error.spans
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if l:span.is_primary &&
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\ (l:span.file_name ==# l:file_name || l:span.file_name ==# '<anon>')
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call add(l:output, {
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\ 'bufnr': a:buffer_number,
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\ 'lnum': l:span.line_start,
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\ 'vcol': 0,
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\ 'col': l:span.byte_start,
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\ 'nr': -1,
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\ 'text': l:error.message,
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\ 'type': toupper(l:error.level[0]),
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\})
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else
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" when the error is caused in the expansion of a macro, we have
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" to bury deeper
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let l:root_cause = s:FindErrorInExpansion(l:span, l:file_name)
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if !empty(l:root_cause)
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call add(l:output, {
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\ 'bufnr': a:buffer_number,
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\ 'lnum': l:root_cause[0],
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\ 'vcol': 0,
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\ 'col': l:root_cause[1],
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\ 'nr': -1,
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\ 'text': l:error.message,
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\ 'type': toupper(l:error.level[0]),
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\})
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endif
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endif
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endfor
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endfor
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return l:output
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endfunction
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" returns: a list [lnum, col] with the location of the error or []
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function! s:FindErrorInExpansion(span, file_name) abort
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if a:span.file_name ==# a:file_name
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return [a:span.line_start, a:span.byte_start]
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endif
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if !empty(a:span.expansion)
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return s:FindErrorInExpansion(a:span.expansion.span, a:file_name)
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endif
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return []
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endfunction
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function! ale_linters#rust#rustc#RustcCommand(buffer_number) abort
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" Try to guess the library search path. If the project is managed by cargo,
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" it's usually <project root>/target/debug/deps/ or
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" <project root>/target/release/deps/
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let l:cargo_file = ale#util#FindNearestFile(a:buffer_number, 'Cargo.toml')
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if l:cargo_file !=# ''
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let l:project_root = fnamemodify(l:cargo_file, ':h')
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let l:dependencies = '-L ' . l:project_root . '/target/debug/deps -L ' .
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\ l:project_root . '/target/release/deps'
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else
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let l:dependencies = ''
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endif
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return 'rustc --error-format=json -Z no-trans ' . l:dependencies . ' -'
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endfunction
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call ale#linter#Define('rust', {
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\ 'name': 'rustc',
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\ 'executable': 'rustc',
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\ 'command_callback': 'ale_linters#rust#rustc#RustcCommand',
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\ 'callback': 'ale_linters#rust#rustc#HandleRustcErrors',
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\ 'output_stream': 'stderr',
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\})
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