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Cflags parser: fix special chars matching algorithm

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This commit is contained in:
François-Xavier Carton 2019-01-09 16:00:10 +01:00
parent f23811770a
commit 4bbb10b46a
1 changed files with 34 additions and 11 deletions
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45
autoload/ale/c.vim
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@ -46,6 +46,38 @@ function! ale#c#FindProjectRoot(buffer) abort
return ''
endfunction
function! ale#c#AreSpecialCharsBalanced(option) abort
" Escape \"
let l:option_escaped = substitute(a:option, '\\"', '', 'g')
" Retain special chars only
let l:special_chars = substitute(l:option_escaped, '[^"''()`]', '', 'g')
let l:special_chars = split(l:special_chars, '\zs')
" Check if they are balanced
let l:stack = []
for l:char in l:special_chars
if l:char is# ')'
if len(l:stack) == 0 || get(l:stack, -1) isnot# '('
return 0
endif
call remove(l:stack, -1)
elseif l:char is# '('
call add(l:stack, l:char)
else
if len(l:stack) > 0 && get(l:stack, -1) is# l:char
call remove(l:stack, -1)
else
call add(l:stack, l:char)
endif
endif
endfor
return len(l:stack) == 0
endfunction
function! ale#c#ParseCFlags(path_prefix, cflag_line) abort
let l:cflags_list = []
let l:previous_options = ''
@ -57,17 +89,8 @@ function! ale#c#ParseCFlags(path_prefix, cflag_line) abort
let l:option = l:previous_options . l:split_lines[l:option_index]
let l:option_index = l:option_index + 1
" Check if cflag contained an unmatched characters and should not have been splitted
let l:option_special = substitute(l:option, '\\"', '', 'g')
let l:option_special = substitute(l:option_special, '[^"''()`]', '', 'g')
let l:option_special = substitute(l:option_special, '""', '', 'g')
let l:option_special = substitute(l:option_special, '''''', '', 'g')
let l:option_special = substitute(l:option_special, '``', '', 'g')
let l:option_special = substitute(l:option_special, '((', '(', 'g')
let l:option_special = substitute(l:option_special, '))', ')', 'g')
let l:option_special = substitute(l:option_special, '()', '', 'g')
if len(l:option_special) > 0 && l:option_index < len(l:split_lines)
" Check if cflag contained an unmatched special character and should not have been splitted
if ale#c#AreSpecialCharsBalanced(l:option) == 0 && l:option_index < len(l:split_lines)
let l:previous_options = l:option . ' '
continue
endif