" Vim indent file " Language: Javascript " Maintainer: vim-javascript community " URL: https://github.com/pangloss/vim-javascript " Last Change: August 6, 2016 " Only load this indent file when no other was loaded. if exists("b:did_indent") finish endif let b:did_indent = 1 " Now, set up our indentation expression and keys that trigger it. setlocal indentexpr=GetJavascriptIndent() setlocal nolisp setlocal indentkeys=0{,0},0),0],:,!^F,o,O,e setlocal cinoptions+=j1,J1 let b:undo_indent = 'setlocal indentexpr< indentkeys< cinoptions<' " Only define the function once. if exists("*GetJavascriptIndent") finish endif let s:cpo_save = &cpo set cpo&vim " Get shiftwidth value if exists('*shiftwidth') function s:sw() return shiftwidth() endfunction else function s:sw() return &sw endfunction endif let s:line_pre = '^\s*\%(\/\*.\{-}\*\/\s*\)*' let s:expr_case = s:line_pre . '\%(\%(case\>.*\)\|default\)\s*:' " Regex of syntax group names that are or delimit string or are comments. let s:syng_strcom = '\%(s\%(tring\|pecial\)\|comment\|regex\|doc\|template\)' " Regex of syntax group names that are strings or documentation. let s:syng_comment = '\%(comment\|doc\)' " Expression used to check whether we should skip a match with searchpair(). let s:skip_expr = "line('.') < (prevnonblank(v:lnum) - 2000) ? dummy : s:IsSyn(line('.'),col('.'),'')" function s:lookForParens(start,end,flags,time) try return searchpair(a:start,'',a:end,a:flags,s:skip_expr,0,a:time) catch /E118/ return searchpair(a:start,'',a:end,a:flags,0,0) endtry endfunction let s:line_term = '\%(\s*\%(\/\*.\{-}\*\/\s*\)\=\)\@>$' " configurable regexes that define continuation lines, not including (, {, or [. if !exists('g:javascript_opfirst') let g:javascript_opfirst = '\%([<>,:?^%]\|\([-/.+]\)\%(\1\|\*\|\/\)\@!\|\*\/\@!\|=>\@!\||\|&\|in\%(stanceof\)\=\>\)' endif let g:javascript_opfirst = s:line_pre . g:javascript_opfirst if !exists('g:javascript_continuation') let g:javascript_continuation = '\%([<*,.?:^%]\|+\@<!+\|-\@<!-\|=\@<!>\|\*\@<!\/\|=\||\|&\|\' . (a:add ? '\|\ -1) && \ s:lookForParens('(', ')', 'cbW', 100) > 0 && search((a:add ? \ '\%(function\*\|[[:lower:][:upper:]_$][[:digit:][:lower:][:upper:]_$]*\)' : \ '\<\%(for\%(\s+each\)\=\|if\|let\|w\%(hile\|ith\)\)') . '\_s*\%#\C','bW') && \ (a:add || (expand("") ==# 'while' ? !s:lookForParens('\\C', '\\C','bW',100) : 1)) endfunction " Auxiliary Functions {{{2 " strip line of comment function s:StripLine(c) return a:c !~# s:expr_case ? substitute(a:c, '\%(:\@<!\/\/.*\)$', '','') : a:c endfunction " Check if the character at lnum:col is inside a string, comment, or is ascii. function s:IsSyn(lnum, col, reg) return synIDattr(synID(a:lnum, a:col, 0), 'name') =~? (a:reg != '' ? a:reg : s:syng_strcom) endfunction " Find line above 'lnum' that isn't empty, in a comment, or in a string. function s:PrevCodeLine(lnum) let lnum = prevnonblank(a:lnum) while lnum > 0 if !s:IsSyn(lnum, matchend(getline(lnum), '^\s*[^''"]'),'') break endif let lnum = prevnonblank(lnum - 1) endwhile return lnum endfunction " Check if line 'lnum' has more opening brackets than closing ones. function s:Balanced(lnum) let open_0 = 0 let open_2 = 0 let open_4 = 0 let line = getline(a:lnum) let pos = match(line, '[][(){}]', 0) while pos != -1 if !s:IsSyn(a:lnum, pos + 1, '') let idx = stridx('(){}[]', line[pos]) if idx % 2 == 0 let open_{idx} = open_{idx} + 1 else let open_{idx - 1} = open_{idx - 1} - 1 endif endif let pos = match(line, '[][(){}]', pos + 1) endwhile return (!open_4 + !open_2 + !open_0) - 2 endfunction " }}} function GetJavascriptIndent() if !exists('b:js_cache') let b:js_cache = [0,0,0] endif " Get the current line. let line = getline(v:lnum) " previous nonblank line number let prevline = prevnonblank(v:lnum - 1) " start with strings,comments,etc.{{{2 if (line !~ '^[''"`]' && s:IsSyn(v:lnum,1,'string\|template')) || \ (line !~ '^\s*[/*]' && s:IsSyn(v:lnum,1,s:syng_comment)) return -1 endif if line !~ '^\%(\/\*\|\s*\/\/\)' && s:IsSyn(v:lnum,1,s:syng_comment) return cindent(v:lnum) endif let lnum = s:PrevCodeLine(v:lnum - 1) if lnum == 0 return 0 endif if (line =~# s:expr_case) let cpo_switch = &cpo set cpo+=% let ind = cindent(v:lnum) let &cpo = cpo_switch return ind endif "}}} " the containing paren, bracket, curly. Memoize, last lineNr either has the " same scope or starts a new one, unless if it closed a scope. call cursor(v:lnum,1) if b:js_cache[0] >= lnum && b:js_cache[0] <= v:lnum && b:js_cache[0] && \ (b:js_cache[0] > lnum || s:Balanced(lnum) > 0) let num = b:js_cache[1] elseif line[0] =~ '\s' let syns = synIDattr(synID(v:lnum, 1, 0), 'name') let pattern = syns =~? 'block' ? ['{','}'] : syns =~? 'jsparen' ? ['(',')'] : \ syns =~? 'jsbracket'? ['\[','\]'] : ['[({[]','[])}]'] let num = s:lookForParens(pattern[0],pattern[1],'bW',2000) else let num = s:lookForParens('[({[]','[])}]','bW',2000) endif let b:js_cache = [v:lnum,num,line('.') == v:lnum ? b:js_cache[2] : col('.')] if line =~ s:line_pre . '[])}]' return indent(num) endif let pline = s:StripLine(getline(lnum)) let inb = num == 0 ? 1 : (s:Onescope(num, s:StripLine(strpart(getline(num),0,b:js_cache[2] - 1)),1) || \ (line !~ s:line_pre . ',' && pline !~ ',' . s:line_term)) && num < lnum let switch_offset = (!inb || num == 0) || expand("") !=# 'switch' ? 0 : &cino !~ ':' || !has('float') ? s:sw() : \ float2nr(str2float(matchstr(&cino,'.*:\zs[-0-9.]*')) * (&cino =~# '.*:[^,]*s' ? s:sw() : 1)) " most significant, find the indent amount if (inb && (line =~# g:javascript_opfirst || \ (pline =~# g:javascript_continuation && pline !~# s:expr_case && (pline !~ ':' . s:line_term || line !~# \ s:line_pre . '\%(d\%(o\|ebugger\)\|else\|f\%(or\|inally\)\|if\|let\|switch\|t\%(hrow\|ry\)\|w\%(hile\|ith\)\)\>')))) || \ (num < lnum && s:Onescope(lnum,pline,0) && line !~ s:line_pre . '{') return (num > 0 ? indent(num) : -s:sw()) + (s:sw() * 2) + switch_offset elseif num > 0 return indent(num) + s:sw() + switch_offset endif endfunction let &cpo = s:cpo_save unlet s:cpo_save