| " Vim indent file |
| " Language: Javascript |
| " Maintainer: Chris Paul ( https://github.com/bounceme ) |
| " URL: https://github.com/pangloss/vim-javascript |
| " Last Change: August 25, 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 noautoindent nosmartindent |
| setlocal indentkeys=0{,0},0),0],:,!^F,o,O,e |
| setlocal cinoptions+=j1,J1 |
| |
| let b:undo_indent = 'setlocal indentexpr< smartindent< autoindent< 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 = "synIDattr(synID(line('.'),col('.'),0),'name') =~? '".s:syng_strcom."'" |
| |
| if has('reltime') |
| function s:GetPair(start,end,flags,time) |
| return searchpair(a:start,'',a:end,a:flags,s:skip_expr,max([prevnonblank(v:lnum) - 2000,0]),a:time) |
| endfunction |
| else |
| function s:GetPair(start,end,flags,n) |
| return searchpair(a:start,'',a:end,a:flags,0,max([prevnonblank(v:lnum) - 2000,0])) |
| endfunction |
| endif |
| |
| 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 |
| if !exists('g:javascript_continuation') |
| let g:javascript_continuation = '\%([<=,.?/*:^%|&]\|+\@<!+\|-\@<!-\|=\@<!>\|\<in\%(stanceof\)\=\)' |
| endif |
| |
| let g:javascript_opfirst = s:line_pre . g:javascript_opfirst |
| let g:javascript_continuation .= s:line_term |
| |
| function s:OneScope(lnum,text,add) |
| return a:text =~# '\%(\<else\|\<do\|=>\)' . s:line_term ? 'no b' : |
| \ ((a:add && a:text =~ s:line_pre . '$' && search('\%' . s:PrevCodeLine(a:lnum - 1) . 'l.)' . s:line_term)) || |
| \ cursor(a:lnum, match(a:text, ')' . s:line_term)) > -1) && |
| \ s:GetPair('(', ')', 'cbW', 100) > 0 && search('\C\l\+\_s*\%#','bW') && |
| \ (a:add || ((expand('<cword>') !=# 'while' || !s:GetPair('\C\<do\>', '\C\<while\>','nbW',100)) && |
| \ (expand('<cword>') !=# 'each' || search('\C\<for\_s\+\%#','nbW')))) ? expand('<cword>') : '' |
| endfunction |
| |
| " https://github.com/sweet-js/sweet.js/wiki/design#give-lookbehind-to-the-reader |
| function s:IsBlock() |
| return getline(line('.'))[col('.')-1] == '{' && !search( |
| \ '\C\%(\<return\s*\|\%([-=~!<*+,.?^%|&\[(]\|=\@<!>\|\*\@<!\/\|\<\%(var\|const\|let\|import\|export\%(\_s\+default\)\=\|yield\|delete\|void\|t\%(ypeof\|hrow\)\|new\|in\%(stanceof\)\=\)\)\_s*\)\%#','bnW') && |
| \ (!search(':\_s*\%#','bW') || (!s:GetPair('[({[]','[])}]','bW',200) || s:IsBlock())) |
| endfunction |
| |
| " Auxiliary Functions {{{2 |
| |
| " Find line above 'lnum' that isn't empty, in a comment, or in a string. |
| function s:PrevCodeLine(lnum) |
| let l:lnum = prevnonblank(a:lnum) |
| while l:lnum |
| if synIDattr(synID(l:lnum,matchend(getline(l:lnum), '^\s*[^''"]'),0),'name') !~? s:syng_strcom |
| return l:lnum |
| endif |
| let l:lnum = prevnonblank(l:lnum - 1) |
| endwhile |
| endfunction |
| |
| " Check if line 'lnum' has a balanced amount of parentheses. |
| function s:Balanced(lnum) |
| let [open_0,open_2,open_4] = [0,0,0] |
| let l:line = getline(a:lnum) |
| let pos = match(l:line, '[][(){}]', 0) |
| while pos != -1 |
| if synIDattr(synID(a:lnum,pos + 1,0),'name') !~? s:syng_strcom |
| let idx = stridx('(){}[]', l: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(l: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 l:line = getline(v:lnum) |
| let syns = synIDattr(synID(v:lnum, 1, 0), 'name') |
| |
| " start with strings,comments,etc.{{{2 |
| if (l:line !~ '^[''"`]' && syns =~? '\%(string\|template\)') || |
| \ (l:line !~ '^\s*[/*]' && syns =~? s:syng_comment) |
| return -1 |
| endif |
| if l:line !~ '^\%(\/\*\|\s*\/\/\)' && syns =~? s:syng_comment |
| return cindent(v:lnum) |
| endif |
| let l:lnum = s:PrevCodeLine(v:lnum - 1) |
| if l:lnum == 0 |
| return 0 |
| endif |
| |
| if (l: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] >= l:lnum && b:js_cache[0] < v:lnum && b:js_cache[0] && |
| \ (b:js_cache[0] > l:lnum || s:Balanced(l:lnum) > 0) |
| let num = b:js_cache[1] |
| elseif syns != '' && l:line[0] =~ '\s' |
| let pattern = syns =~? 'block' ? ['{','}'] : syns =~? 'jsparen' ? ['(',')'] : |
| \ syns =~? 'jsbracket'? ['\[','\]'] : ['[({[]','[])}]'] |
| let num = s:GetPair(pattern[0],pattern[1],'bW',2000) |
| else |
| let num = s:GetPair('[({[]','[])}]','bW',2000) |
| endif |
| let b:js_cache = [v:lnum,num,line('.') == v:lnum ? b:js_cache[2] : col('.')] |
| |
| if l:line =~ s:line_pre . '[])}]' |
| return indent(num) |
| endif |
| |
| call cursor(b:js_cache[1],b:js_cache[2]) |
| |
| let swcase = getline(l:lnum) =~# s:expr_case |
| let pline = swcase ? getline(l:lnum) : substitute(getline(l:lnum), '\%(:\@<!\/\/.*\)$', '','') |
| let inb = num == 0 || num < l:lnum && ((l:line !~ s:line_pre . ',' && pline !~ ',' . s:line_term) || s:IsBlock()) |
| let switch_offset = num == 0 || s:OneScope(num, strpart(getline(num),0,b:js_cache[2] - 1),1) !=# '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 && !swcase && ((l:line =~# g:javascript_opfirst || pline =~# g:javascript_continuation) || |
| \ num < l:lnum && s:OneScope(l:lnum,pline,0) =~# '\<\%(for\|each\|if\|let\|no\sb\|w\%(hile\|ith\)\)\>' && |
| \ l: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 |