+" 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',
+\})