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scriptencoding utf-8
" Author: w0rp <devw0rp@gmail.com>
" Description: This file defines a handler function which ought to work for
" any program which outputs errors in the format that GCC uses.
let s:pragma_error = '#pragma once in main file'
" Look for lines like the following.
"
" <stdin>:8:5: warning: conversion lacks type at end of format [-Wformat=]
" <stdin>:10:27: error: invalid operands to binary - (have ‘int’ and ‘char *’)
" -:189:7: note: $/${} is unnecessary on arithmetic variables. [SC2004]
let s:pattern = '\v^([a-zA-Z]?:?[^:]+):(\d+)?:?(\d+)?:? ([^:]+): (.+)$'
let s:inline_pattern = '\v inlined from .* at \<stdin\>:(\d+):(\d+):$'
function! s:IsHeaderFile(filename) abort
return a:filename =~? '\v\.(h|hpp)$'
endfunction
function! s:RemoveUnicodeQuotes(text) abort
let l:text = a:text
let l:text = substitute(l:text, '[`´‘’]', '''', 'g')
let l:text = substitute(l:text, '\v\\u2018([^\\]+)\\u2019', '''\1''', 'g')
let l:text = substitute(l:text, '[“”]', '"', 'g')
return l:text
endfunction
function! s:ParseInlinedFunctionProblems(buffer, lines) abort
let l:output = []
let l:pos_match = []
for l:line in a:lines
let l:match = matchlist(l:line, s:pattern)
if !empty(l:match) && !empty(l:pos_match)
call add(l:output, {
\ 'lnum': str2nr(l:pos_match[1]),
\ 'col': str2nr(l:pos_match[2]),
\ 'type': (l:match[4] is# 'error' || l:match[4] is# 'fatal error') ? 'E' : 'W',
\ 'text': s:RemoveUnicodeQuotes(l:match[5]),
\})
endif
let l:pos_match = matchlist(l:line, s:inline_pattern)
endfor
return l:output
endfunction
" Report problems inside of header files just for gcc and clang
function! s:ParseProblemsInHeaders(buffer, lines) abort
let l:output = []
let l:include_item = {}
for l:line in a:lines[: -2]
let l:include_match = matchlist(l:line, '\v^In file included from')
if !empty(l:include_item)
let l:pattern_match = matchlist(l:line, s:pattern)
if !empty(l:pattern_match) && l:pattern_match[1] is# '<stdin>'
if has_key(l:include_item, 'lnum')
call add(l:output, l:include_item)
endif
let l:include_item = {}
continue
endif
let l:include_item.detail .= "\n" . l:line
endif
if !empty(l:include_match)
if empty(l:include_item)
let l:include_item = {
\ 'text': 'Error found in header. See :ALEDetail',
\ 'detail': l:line,
\}
endif
endif
if !empty(l:include_item)
let l:stdin_match = matchlist(l:line, '\vfrom \<stdin\>:(\d+):(\d*):?$')
if !empty(l:stdin_match)
let l:include_item.lnum = str2nr(l:stdin_match[1])
if str2nr(l:stdin_match[2])
let l:include_item.col = str2nr(l:stdin_match[2])
endif
endif
endif
endfor
if !empty(l:include_item) && has_key(l:include_item, 'lnum')
call add(l:output, l:include_item)
endif
return l:output
endfunction
function! ale#handlers#gcc#HandleGCCFormat(buffer, lines) abort
let l:output = []
for l:match in ale#util#GetMatches(a:lines, s:pattern)
" Filter out the pragma errors
if s:IsHeaderFile(bufname(bufnr('')))
\&& l:match[5][:len(s:pragma_error) - 1] is# s:pragma_error
continue
endif
" If the 'error type' is a note, make it detail related to
" the previous error parsed in output
if l:match[4] is# 'note'
if !empty(l:output)
if !has_key(l:output[-1], 'detail')
let l:output[-1].detail = l:output[-1].text
" handle macro expansion errors/notes
if l:match[5] =~? '^in expansion of macro ‘\w*\w’$'
" if the macro expansion is in the file we're in, add
" the lnum and col keys to the previous error
if l:match[1] is# '<stdin>'
\ && !has_key(l:output[-1], 'col')
let l:output[-1].lnum = str2nr(l:match[2])
let l:output[-1].col = str2nr(l:match[3])
else
" the error is not in the current file, and since
" macro expansion errors don't show the full path to
" the error from the current file, we have to just
" give out a generic error message
let l:output[-1].text = 'Error found in macro expansion. See :ALEDetail'
endif
endif
endif
let l:output[-1].detail = l:output[-1].detail . "\n"
\ . s:RemoveUnicodeQuotes(l:match[0])
endif
continue
endif
let l:item = {
\ 'lnum': str2nr(l:match[2]),
\ 'type': (l:match[4] is# 'error' || l:match[4] is# 'fatal error') ? 'E' : 'W',
\ 'text': s:RemoveUnicodeQuotes(l:match[5]),
\}
if !empty(l:match[3])
let l:item.col = str2nr(l:match[3])
endif
" If the filename is something like <stdin>, <nofile> or -, then
" this is an error for the file we checked.
if l:match[1] isnot# '-' && l:match[1][0] isnot# '<'
let l:item['filename'] = l:match[1]
endif
call add(l:output, l:item)
endfor
return l:output
endfunction
" Handle problems with the GCC format, but report problems inside of headers.
function! ale#handlers#gcc#HandleGCCFormatWithIncludes(buffer, lines) abort
let l:output = ale#handlers#gcc#HandleGCCFormat(a:buffer, a:lines)
call extend(l:output, s:ParseInlinedFunctionProblems(a:buffer, a:lines))
call extend(l:output, s:ParseProblemsInHeaders(a:buffer, a:lines))
return l:output
endfunction
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