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" Author: w0rp <devw0rp@gmail.com>
" Description: A C++ compiler linter for C++ files with gcc/clang, etc.
call ale#Set('cpp_cc_executable', '<auto>')
call ale#Set('cpp_cc_options', '-std=c++14 -Wall')
call ale#Set('cpp_cc_use_header_lang_flag', -1)
call ale#Set('cpp_cc_header_exts', ['h', 'hpp'])
function! ale_linters#cpp#cc#GetExecutable(buffer) abort
let l:executable = ale#Var(a:buffer, 'cpp_cc_executable')
" Default to either clang++ or gcc.
if l:executable is# '<auto>'
if ale#engine#IsExecutable(a:buffer, 'clang++')
let l:executable = 'clang++'
else
let l:executable = 'gcc'
endif
endif
return l:executable
endfunction
function! ale_linters#cpp#cc#GetCommand(buffer, output) abort
let l:cflags = ale#c#GetCFlags(a:buffer, a:output)
let l:ale_flags = ale#Var(a:buffer, 'cpp_cc_options')
if l:cflags =~# '-std='
let l:ale_flags = substitute(
\ l:ale_flags,
\ '-std=\(c\|gnu\)++[0-9]\{2\}',
\ '',
\ 'g')
endif
" Select the correct language flag depending on the executable, options
" and file extension
let l:executable = ale_linters#cpp#cc#GetExecutable(a:buffer)
let l:use_header_lang_flag = ale#Var(a:buffer, 'cpp_cc_use_header_lang_flag')
let l:header_exts = ale#Var(a:buffer, 'cpp_cc_header_exts')
let l:lang_flag = ale#c#GetLanguageFlag(
\ a:buffer,
\ l:executable,
\ l:use_header_lang_flag,
\ l:header_exts,
\ 'c++')
" -iquote with the directory the file is in makes #include work for
" headers in the same directory.
"
" `-o /dev/null` or `-o null` is needed to catch all errors,
" -fsyntax-only doesn't catch everything.
return '%e -S -x ' . l:lang_flag
\ . ' -o ' . g:ale#util#nul_file
\ . ' -iquote %s:h'
\ . ale#Pad(l:cflags)
\ . ale#Pad(l:ale_flags) . ' -'
endfunction
call ale#linter#Define('cpp', {
\ 'name': 'cc',
\ 'aliases': ['gcc', 'clang', 'g++', 'clang++'],
\ 'output_stream': 'stderr',
\ 'executable': function('ale_linters#cpp#cc#GetExecutable'),
\ 'command': {b -> ale#c#RunMakeCommand(b, function('ale_linters#cpp#cc#GetCommand'))},
\ 'callback': 'ale#handlers#gcc#HandleGCCFormatWithIncludes',
\})
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