588 lines
20 KiB
VimL
588 lines
20 KiB
VimL
" Author: gagbo <gagbobada@gmail.com>, w0rp <devw0rp@gmail.com>, roel0 <postelmansroel@gmail.com>
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" Description: Functions for integrating with C-family linters.
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call ale#Set('c_parse_makefile', 0)
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call ale#Set('c_always_make', has('unix') && !has('macunix'))
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call ale#Set('c_parse_compile_commands', 1)
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let s:sep = has('win32') ? '\' : '/'
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" Set just so tests can override it.
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let g:__ale_c_project_filenames = ['.git/HEAD', 'configure', 'Makefile', 'CMakeLists.txt']
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let g:ale_c_build_dir_names = get(g:, 'ale_c_build_dir_names', [
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\ 'build',
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\ 'bin',
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\])
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function! s:CanParseMakefile(buffer) abort
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" Something somewhere seems to delete this setting in tests, so ensure we
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" always have a default value.
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call ale#Set('c_parse_makefile', 0)
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return ale#Var(a:buffer, 'c_parse_makefile')
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endfunction
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function! ale#c#GetBuildDirectory(buffer) abort
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let l:build_dir = ale#Var(a:buffer, 'c_build_dir')
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" c_build_dir has the priority if defined
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if !empty(l:build_dir)
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return l:build_dir
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endif
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let [l:root, l:json_file] = ale#c#FindCompileCommands(a:buffer)
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return ale#path#Dirname(l:json_file)
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endfunction
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function! ale#c#ShellSplit(line) abort
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let l:stack = []
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let l:args = ['']
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let l:prev = ''
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for l:char in split(a:line, '\zs')
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if l:char is# ''''
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if len(l:stack) > 0 && get(l:stack, -1) is# ''''
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call remove(l:stack, -1)
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elseif (len(l:stack) == 0 || get(l:stack, -1) isnot# '"') && l:prev isnot# '\'
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call add(l:stack, l:char)
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endif
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elseif (l:char is# '"' || l:char is# '`') && l:prev isnot# '\'
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if len(l:stack) > 0 && get(l:stack, -1) is# l:char
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call remove(l:stack, -1)
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elseif len(l:stack) == 0 || get(l:stack, -1) isnot# ''''
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call add(l:stack, l:char)
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endif
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elseif (l:char is# '(' || l:char is# '[' || l:char is# '{') && l:prev isnot# '\'
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if len(l:stack) == 0 || get(l:stack, -1) isnot# ''''
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call add(l:stack, l:char)
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endif
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elseif (l:char is# ')' || l:char is# ']' || l:char is# '}') && l:prev isnot# '\'
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if len(l:stack) > 0 && get(l:stack, -1) is# {')': '(', ']': '[', '}': '{'}[l:char]
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call remove(l:stack, -1)
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endif
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elseif l:char is# ' ' && len(l:stack) == 0
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if len(get(l:args, -1)) > 0
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call add(l:args, '')
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endif
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continue
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endif
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let l:args[-1] = get(l:args, -1) . l:char
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endfor
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return l:args
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endfunction
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" Takes the path prefix and a list of cflags and expands @file arguments to
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" the contents of the file.
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"
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" @file arguments are command line arguments recognised by gcc and clang. For
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" instance, if @./path/to/file was given to gcc, it would load .path/to/file
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" and use the contents of that file as arguments.
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function! ale#c#ExpandAtArgs(path_prefix, raw_split_lines) abort
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let l:out_lines = []
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for l:option in a:raw_split_lines
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if stridx(l:option, '@') == 0
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" This is an argument specifying a location of a file containing other arguments
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let l:path = join(split(l:option, '\zs')[1:], '')
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" Make path absolute
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if !ale#path#IsAbsolute(l:path)
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let l:rel_path = substitute(l:path, '"', '', 'g')
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let l:rel_path = substitute(l:rel_path, '''', '', 'g')
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let l:path = ale#path#GetAbsPath(a:path_prefix, l:rel_path)
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endif
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" Read the file and add all the arguments
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try
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let l:additional_args = readfile(l:path)
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catch
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continue " All we can really do is skip this argument
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endtry
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let l:file_lines = []
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for l:line in l:additional_args
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let l:file_lines += ale#c#ShellSplit(l:line)
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endfor
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" @file arguments can include other @file arguments, so we must
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" recurse.
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let l:out_lines += ale#c#ExpandAtArgs(a:path_prefix, l:file_lines)
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else
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" This is not an @file argument, so don't touch it.
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let l:out_lines += [l:option]
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endif
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endfor
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return l:out_lines
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endfunction
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" Quote C/C++ a compiler argument, if needed.
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"
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" Quoting arguments might cause issues with some systems/compilers, so we only
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" quote them if we need to.
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function! ale#c#QuoteArg(arg) abort
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if a:arg !~# '\v[#$&*()\\|[\]{};''"<>/?! ^%]'
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return a:arg
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endif
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return ale#Escape(a:arg)
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endfunction
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function! ale#c#ParseCFlags(path_prefix, should_quote, raw_arguments) abort
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" Expand @file arguments now before parsing
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let l:arguments = ale#c#ExpandAtArgs(a:path_prefix, a:raw_arguments)
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" A list of [already_quoted, argument]
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let l:items = []
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let l:option_index = 0
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while l:option_index < len(l:arguments)
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let l:option = l:arguments[l:option_index]
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let l:option_index = l:option_index + 1
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" Include options, that may need relative path fix
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if stridx(l:option, '-I') == 0
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\ || stridx(l:option, '-iquote') == 0
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\ || stridx(l:option, '-isystem') == 0
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\ || stridx(l:option, '-idirafter') == 0
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\ || stridx(l:option, '-iframework') == 0
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if stridx(l:option, '-I') == 0 && l:option isnot# '-I'
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let l:arg = join(split(l:option, '\zs')[2:], '')
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let l:option = '-I'
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else
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let l:arg = l:arguments[l:option_index]
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let l:option_index = l:option_index + 1
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endif
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" Fix relative paths if needed
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if !ale#path#IsAbsolute(l:arg)
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let l:rel_path = substitute(l:arg, '"', '', 'g')
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let l:rel_path = substitute(l:rel_path, '''', '', 'g')
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let l:arg = ale#path#GetAbsPath(a:path_prefix, l:rel_path)
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endif
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call add(l:items, [1, l:option])
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call add(l:items, [1, ale#Escape(l:arg)])
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" Options with arg that can be grouped with the option or separate
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elseif stridx(l:option, '-D') == 0 || stridx(l:option, '-B') == 0
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if l:option is# '-D' || l:option is# '-B'
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call add(l:items, [1, l:option])
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call add(l:items, [0, l:arguments[l:option_index]])
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let l:option_index = l:option_index + 1
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else
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call add(l:items, [0, l:option])
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endif
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" Options that have an argument (always separate)
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elseif l:option is# '-iprefix' || stridx(l:option, '-iwithprefix') == 0
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\ || l:option is# '-isysroot' || l:option is# '-imultilib'
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\ || l:option is# '-include' || l:option is# '-imacros'
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call add(l:items, [0, l:option])
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call add(l:items, [0, l:arguments[l:option_index]])
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let l:option_index = l:option_index + 1
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" Options without argument
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elseif (stridx(l:option, '-W') == 0 && stridx(l:option, '-Wa,') != 0 && stridx(l:option, '-Wl,') != 0 && stridx(l:option, '-Wp,') != 0)
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\ || l:option is# '-w' || stridx(l:option, '-pedantic') == 0
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\ || l:option is# '-ansi' || stridx(l:option, '-std=') == 0
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\ || stridx(l:option, '-f') == 0 && l:option !~# '\v^-f(dump|diagnostics|no-show-column|stack-usage)'
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\ || stridx(l:option, '-O') == 0
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\ || l:option is# '-C' || l:option is# '-CC' || l:option is# '-trigraphs'
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\ || stridx(l:option, '-nostdinc') == 0 || stridx(l:option, '-iplugindir=') == 0
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\ || stridx(l:option, '--sysroot=') == 0 || l:option is# '--no-sysroot-suffix'
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\ || stridx(l:option, '-m') == 0
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call add(l:items, [0, l:option])
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endif
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endwhile
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if a:should_quote
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" Quote C arguments that haven't already been quoted above.
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" If and only if we've been asked to quote them.
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call map(l:items, 'v:val[0] ? v:val[1] : ale#c#QuoteArg(v:val[1])')
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else
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call map(l:items, 'v:val[1]')
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endif
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return join(l:items, ' ')
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endfunction
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function! ale#c#ParseCFlagsFromMakeOutput(buffer, make_output) abort
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if !s:CanParseMakefile(a:buffer)
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return v:null
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endif
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let l:buffer_filename = expand('#' . a:buffer . ':t')
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let l:cflag_line = ''
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" Find a line matching this buffer's filename in the make output.
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for l:line in a:make_output
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if stridx(l:line, l:buffer_filename) >= 0
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let l:cflag_line = l:line
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break
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endif
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endfor
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let l:makefile_path = ale#path#FindNearestFile(a:buffer, 'Makefile')
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let l:makefile_dir = fnamemodify(l:makefile_path, ':p:h')
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return ale#c#ParseCFlags(l:makefile_dir, 0, ale#c#ShellSplit(l:cflag_line))
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endfunction
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" Given a buffer number, find the project directory containing
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" compile_commands.json, and the path to the compile_commands.json file.
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"
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" If compile_commands.json cannot be found, two empty strings will be
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" returned.
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function! ale#c#FindCompileCommands(buffer) abort
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" Look above the current source file to find compile_commands.json
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let l:json_file = ale#path#FindNearestFile(a:buffer, 'compile_commands.json')
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if !empty(l:json_file)
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return [fnamemodify(l:json_file, ':h'), l:json_file]
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endif
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" Search in build directories if we can't find it in the project.
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for l:path in ale#path#Upwards(expand('#' . a:buffer . ':p:h'))
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for l:dirname in ale#Var(a:buffer, 'c_build_dir_names')
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let l:c_build_dir = l:path . s:sep . l:dirname
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let l:json_file = l:c_build_dir . s:sep . 'compile_commands.json'
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if filereadable(l:json_file)
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return [l:path, l:json_file]
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endif
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endfor
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endfor
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return ['', '']
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endfunction
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" Find the project root for C/C++ projects.
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"
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" The location of compile_commands.json will be used to find project roots.
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"
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" If compile_commands.json cannot be found, other common configuration files
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" will be used to detect the project root.
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function! ale#c#FindProjectRoot(buffer) abort
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let [l:root, l:json_file] = ale#c#FindCompileCommands(a:buffer)
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" Fall back on detecting the project root based on other filenames.
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if empty(l:root)
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for l:project_filename in g:__ale_c_project_filenames
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let l:full_path = ale#path#FindNearestFile(a:buffer, l:project_filename)
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if !empty(l:full_path)
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let l:path = fnamemodify(l:full_path, ':h')
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" Correct .git path detection.
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if fnamemodify(l:path, ':t') is# '.git'
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let l:path = fnamemodify(l:path, ':h')
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endif
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return l:path
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endif
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endfor
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endif
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return l:root
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endfunction
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" Cache compile_commands.json data in a Dictionary, so we don't need to read
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" the same files over and over again. The key in the dictionary will include
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" the last modified time of the file.
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if !exists('s:compile_commands_cache')
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let s:compile_commands_cache = {}
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endif
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function! ale#c#ResetCompileCommandsCache() abort
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let s:compile_commands_cache = {}
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endfunction
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function! s:GetLookupFromCompileCommandsFile(compile_commands_file) abort
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let l:empty = [{}, {}]
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if empty(a:compile_commands_file)
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return l:empty
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endif
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let l:time = getftime(a:compile_commands_file)
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if l:time < 0
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return l:empty
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endif
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let l:key = a:compile_commands_file . ':' . l:time
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if has_key(s:compile_commands_cache, l:key)
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return s:compile_commands_cache[l:key]
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endif
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let l:raw_data = []
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silent! let l:raw_data = json_decode(join(readfile(a:compile_commands_file), ''))
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if type(l:raw_data) isnot v:t_list
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let l:raw_data = []
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endif
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let l:file_lookup = {}
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let l:dir_lookup = {}
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for l:entry in (type(l:raw_data) is v:t_list ? l:raw_data : [])
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let l:filename = ale#path#GetAbsPath(l:entry.directory, l:entry.file)
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" Store a key for lookups by the absolute path to the filename.
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let l:file_lookup[l:filename] = get(l:file_lookup, l:filename, []) + [l:entry]
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" Store a key for fuzzy lookups by the absolute path to the directory.
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let l:dirname = fnamemodify(l:filename, ':h')
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let l:dir_lookup[l:dirname] = get(l:dir_lookup, l:dirname, []) + [l:entry]
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" Store a key for fuzzy lookups by just the basename of the file.
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let l:basename = tolower(fnamemodify(l:entry.file, ':t'))
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let l:file_lookup[l:basename] = get(l:file_lookup, l:basename, []) + [l:entry]
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" Store a key for fuzzy lookups by just the basename of the directory.
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let l:dirbasename = tolower(fnamemodify(l:entry.directory, ':p:h:t'))
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let l:dir_lookup[l:dirbasename] = get(l:dir_lookup, l:dirbasename, []) + [l:entry]
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endfor
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if !empty(l:file_lookup) && !empty(l:dir_lookup)
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let l:result = [l:file_lookup, l:dir_lookup]
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let s:compile_commands_cache[l:key] = l:result
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return l:result
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endif
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return l:empty
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endfunction
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" Get [should_quote, arguments] from either 'command' or 'arguments'
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" 'arguments' should be quoted later, the split 'command' strings should not.
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function! s:GetArguments(json_item) abort
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if has_key(a:json_item, 'arguments')
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return [1, a:json_item.arguments]
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elseif has_key(a:json_item, 'command')
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return [0, ale#c#ShellSplit(a:json_item.command)]
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endif
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return [0, []]
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endfunction
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function! ale#c#ParseCompileCommandsFlags(buffer, file_lookup, dir_lookup) abort
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let l:buffer_filename = ale#path#Simplify(expand('#' . a:buffer . ':p'))
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let l:basename = tolower(fnamemodify(l:buffer_filename, ':t'))
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" Look for any file in the same directory if we can't find an exact match.
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let l:dir = fnamemodify(l:buffer_filename, ':h')
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" Search for an exact file match first.
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let l:file_list = get(a:file_lookup, l:buffer_filename, [])
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" We may have to look for /foo/bar instead of C:\foo\bar
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if empty(l:file_list) && has('win32')
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let l:file_list = get(
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\ a:file_lookup,
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\ ale#path#RemoveDriveLetter(l:buffer_filename),
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\ []
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\)
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endif
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" Try the absolute path to the directory second.
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let l:dir_list = get(a:dir_lookup, l:dir, [])
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if empty(l:dir_list) && has('win32')
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let l:dir_list = get(
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\ a:dir_lookup,
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\ ale#path#RemoveDriveLetter(l:dir),
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\ []
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\)
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endif
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if empty(l:file_list) && empty(l:dir_list)
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" If we can't find matches with the path to the file, try a
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" case-insensitive match for any similarly-named file.
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let l:file_list = get(a:file_lookup, l:basename, [])
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" If we can't find matches with the path to the directory, try a
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" case-insensitive match for anything in similarly-named directory.
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let l:dir_list = get(a:dir_lookup, tolower(fnamemodify(l:dir, ':t')), [])
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endif
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" A source file matching the header filename.
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let l:source_file = ''
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if empty(l:file_list) && l:basename =~? '\.h$\|\.hpp$'
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for l:suffix in ['.c', '.cpp']
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" Try to find a source file by an absolute path first.
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let l:key = fnamemodify(l:buffer_filename, ':r') . l:suffix
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let l:file_list = get(a:file_lookup, l:key, [])
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if empty(l:file_list) && has('win32')
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let l:file_list = get(
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\ a:file_lookup,
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\ ale#path#RemoveDriveLetter(l:key),
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\ []
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\)
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endif
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if empty(l:file_list)
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" Look fuzzy matches on the basename second.
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let l:key = fnamemodify(l:basename, ':r') . l:suffix
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let l:file_list = get(a:file_lookup, l:key, [])
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endif
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if !empty(l:file_list)
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let l:source_file = l:key
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break
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endif
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endfor
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endif
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for l:item in l:file_list
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let l:filename = ale#path#GetAbsPath(l:item.directory, l:item.file)
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" Load the flags for this file, or for a source file matching the
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" header file.
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if (
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\ bufnr(l:filename) is a:buffer
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\ || (
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\ !empty(l:source_file)
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\ && l:filename[-len(l:source_file):] is? l:source_file
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\ )
|
|
\)
|
|
let [l:should_quote, l:args] = s:GetArguments(l:item)
|
|
|
|
return ale#c#ParseCFlags(l:item.directory, l:should_quote, l:args)
|
|
endif
|
|
endfor
|
|
|
|
for l:item in l:dir_list
|
|
let l:filename = ale#path#GetAbsPath(l:item.directory, l:item.file)
|
|
|
|
if ale#path#RemoveDriveLetter(fnamemodify(l:filename, ':h'))
|
|
\ is? ale#path#RemoveDriveLetter(l:dir)
|
|
let [l:should_quote, l:args] = s:GetArguments(l:item)
|
|
|
|
return ale#c#ParseCFlags(l:item.directory, l:should_quote, l:args)
|
|
endif
|
|
endfor
|
|
|
|
return ''
|
|
endfunction
|
|
|
|
function! ale#c#FlagsFromCompileCommands(buffer, compile_commands_file) abort
|
|
let l:lookups = s:GetLookupFromCompileCommandsFile(a:compile_commands_file)
|
|
let l:file_lookup = l:lookups[0]
|
|
let l:dir_lookup = l:lookups[1]
|
|
|
|
return ale#c#ParseCompileCommandsFlags(a:buffer, l:file_lookup, l:dir_lookup)
|
|
endfunction
|
|
|
|
function! ale#c#GetCFlags(buffer, output) abort
|
|
let l:cflags = v:null
|
|
|
|
if ale#Var(a:buffer, 'c_parse_compile_commands')
|
|
let [l:root, l:json_file] = ale#c#FindCompileCommands(a:buffer)
|
|
|
|
if !empty(l:json_file)
|
|
let l:cflags = ale#c#FlagsFromCompileCommands(a:buffer, l:json_file)
|
|
endif
|
|
endif
|
|
|
|
if empty(l:cflags) && s:CanParseMakefile(a:buffer) && !empty(a:output)
|
|
let l:cflags = ale#c#ParseCFlagsFromMakeOutput(a:buffer, a:output)
|
|
endif
|
|
|
|
if l:cflags is v:null
|
|
let l:cflags = ale#c#IncludeOptions(ale#c#FindLocalHeaderPaths(a:buffer))
|
|
endif
|
|
|
|
return l:cflags isnot v:null ? l:cflags : ''
|
|
endfunction
|
|
|
|
function! ale#c#GetMakeCommand(buffer) abort
|
|
if s:CanParseMakefile(a:buffer)
|
|
let l:path = ale#path#FindNearestFile(a:buffer, 'Makefile')
|
|
|
|
if empty(l:path)
|
|
let l:path = ale#path#FindNearestFile(a:buffer, 'GNUmakefile')
|
|
endif
|
|
|
|
if !empty(l:path)
|
|
let l:always_make = ale#Var(a:buffer, 'c_always_make')
|
|
|
|
return [
|
|
\ fnamemodify(l:path, ':h'),
|
|
\ 'make -n' . (l:always_make ? ' --always-make' : ''),
|
|
\]
|
|
endif
|
|
endif
|
|
|
|
return ['', '']
|
|
endfunction
|
|
|
|
function! ale#c#RunMakeCommand(buffer, Callback) abort
|
|
let [l:cwd, l:command] = ale#c#GetMakeCommand(a:buffer)
|
|
|
|
if empty(l:command)
|
|
return a:Callback(a:buffer, [])
|
|
endif
|
|
|
|
return ale#command#Run(
|
|
\ a:buffer,
|
|
\ l:command,
|
|
\ {b, output -> a:Callback(a:buffer, output)},
|
|
\ {'cwd': l:cwd},
|
|
\)
|
|
endfunction
|
|
|
|
" Given a buffer number, search for a project root, and output a List
|
|
" of directories to include based on some heuristics.
|
|
"
|
|
" For projects with headers in the project root, the project root will
|
|
" be returned.
|
|
"
|
|
" For projects with an 'include' directory, that directory will be returned.
|
|
function! ale#c#FindLocalHeaderPaths(buffer) abort
|
|
let l:project_root = ale#c#FindProjectRoot(a:buffer)
|
|
|
|
if empty(l:project_root)
|
|
return []
|
|
endif
|
|
|
|
" See if we can find .h files directory in the project root.
|
|
" If we can, that's our include directory.
|
|
if !empty(globpath(l:project_root, '*.h', 0))
|
|
return [l:project_root]
|
|
endif
|
|
|
|
" Look for .hpp files too.
|
|
if !empty(globpath(l:project_root, '*.hpp', 0))
|
|
return [l:project_root]
|
|
endif
|
|
|
|
" If we find an 'include' directory in the project root, then use that.
|
|
if isdirectory(l:project_root . '/include')
|
|
return [ale#path#Simplify(l:project_root . s:sep . 'include')]
|
|
endif
|
|
|
|
return []
|
|
endfunction
|
|
|
|
" Given a List of include paths, create a string containing the -I include
|
|
" options for those paths, with the paths escaped for use in the shell.
|
|
function! ale#c#IncludeOptions(include_paths) abort
|
|
let l:option_list = []
|
|
|
|
for l:path in a:include_paths
|
|
call add(l:option_list, '-I' . ale#Escape(l:path))
|
|
endfor
|
|
|
|
if empty(l:option_list)
|
|
return ''
|
|
endif
|
|
|
|
return join(l:option_list)
|
|
endfunction
|