199 lines
6.9 KiB
VimL
199 lines
6.9 KiB
VimL
if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'javascript') == -1
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" Vim indent file
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" Language: Javascript
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" Maintainer: vim-javascript community
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" URL: https://github.com/pangloss/vim-javascript
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" Last Change: August 20, 2016
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" Only load this indent file when no other was loaded.
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if exists('b:did_indent')
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finish
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endif
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let b:did_indent = 1
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" Now, set up our indentation expression and keys that trigger it.
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setlocal indentexpr=GetJavascriptIndent()
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setlocal nolisp noautoindent nosmartindent
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setlocal indentkeys=0{,0},0),0],:,!^F,o,O,e
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setlocal cinoptions+=j1,J1
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let b:undo_indent = 'setlocal indentexpr< smartindent< autoindent< indentkeys< cinoptions<'
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" Only define the function once.
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if exists('*GetJavascriptIndent')
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finish
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endif
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let s:cpo_save = &cpo
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set cpo&vim
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" Get shiftwidth value
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if exists('*shiftwidth')
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function s:sw()
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return shiftwidth()
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endfunction
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else
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function s:sw()
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return &sw
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endfunction
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endif
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let s:line_pre = '^\s*\%(\%(\%(\/\*.\{-}\)\=\*\+\/\s*\)\=\)\@>'
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let s:expr_case = s:line_pre . '\%(\%(case\>.\+\)\|default\)\s*:'
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" Regex of syntax group names that are or delimit string or are comments.
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let s:syng_strcom = '\%(s\%(tring\|pecial\)\|comment\|regex\|doc\|template\)'
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" Regex of syntax group names that are strings or documentation.
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let s:syng_comment = '\%(comment\|doc\)'
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" Expression used to check whether we should skip a match with searchpair().
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let s:skip_expr = "synIDattr(synID(line('.'),col('.'),0),'name') =~? '".s:syng_strcom."'"
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if has('reltime')
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function s:GetPair(start,end,flags,time)
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return searchpair(a:start,'',a:end,a:flags,s:skip_expr,max([prevnonblank(v:lnum) - 2000,0]),a:time)
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endfunction
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else
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function s:GetPair(start,end,flags,n)
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return searchpair(a:start,'',a:end,a:flags,0,max([prevnonblank(v:lnum) - 2000,0]))
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endfunction
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endif
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let s:line_term = '\s*\%(\%(\/\%(\%(\*.\{-}\*\/\)\|\%(\*\+\)\)\)\s*\)\=$'
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" configurable regexes that define continuation lines, not including (, {, or [.
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if !exists('g:javascript_opfirst')
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let g:javascript_opfirst = '\%([<>,:?^%|*&]\|\([-/.+]\)\1\@!\|=>\@!\|in\%(stanceof\)\=\>\)'
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endif
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if !exists('g:javascript_continuation')
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let g:javascript_continuation = '\%([<=,.?/*:^%|&]\|+\@<!+\|-\@<!-\|=\@<!>\|\<in\%(stanceof\)\=\)'
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endif
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let g:javascript_opfirst = s:line_pre . g:javascript_opfirst
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let g:javascript_continuation .= s:line_term
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function s:OneScope(lnum,text,add)
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return a:text =~# '\%(\<else\|\<do\|=>\)' . s:line_term ? 'no b' :
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\ ((a:add && a:text =~ s:line_pre . '$' && search('\%' . s:PrevCodeLine(a:lnum - 1) . 'l.)' . s:line_term)) ||
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\ cursor(a:lnum, match(a:text, ')' . s:line_term)) > -1) &&
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\ s:GetPair('(', ')', 'cbW', 100) > 0 && search('\C\l\+\_s*\%#','bW') &&
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\ (a:add || ((expand('<cword>') !=# 'while' || !s:GetPair('\C\<do\>', '\C\<while\>','nbW',100)) &&
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\ expand('cword') !=# 'each' || search('\C\<for\_s\+\%#','nbW'))) ? expand('<cword>') : ''
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endfunction
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" https://github.com/sweet-js/sweet.js/wiki/design#give-lookbehind-to-the-reader
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function s:IsBlock()
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return getline(line('.'))[col('.')-1] == '{' && !search(
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\ '\C\%(\<return\s*\|\%([-=~!<*+,.?^%|&\[(]\|=\@<!>\|\*\@<!\/\|\<\%(var\|const\|let\|yield\|delete\|void\|t\%(ypeof\|hrow\)\|new\|\<in\%(stanceof\)\=\)\)\_s*\)\%#','bnW') &&
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\ (!search(':\_s*\%#','bW') || (!s:GetPair('[({[]','[])}]','bW',200) || s:IsBlock()))
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endfunction
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" Auxiliary Functions {{{2
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" Find line above 'lnum' that isn't empty, in a comment, or in a string.
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function s:PrevCodeLine(lnum)
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let l:lnum = prevnonblank(a:lnum)
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while l:lnum
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if synIDattr(synID(l:lnum,matchend(getline(l:lnum), '^\s*[^''"]'),0),'name') !~? s:syng_strcom
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return l:lnum
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endif
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let l:lnum = prevnonblank(l:lnum - 1)
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endwhile
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endfunction
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" Check if line 'lnum' has a balanced amount of parentheses.
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function s:Balanced(lnum)
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let [open_0,open_2,open_4] = [0,0,0]
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let l:line = getline(a:lnum)
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let pos = match(l:line, '[][(){}]', 0)
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while pos != -1
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if synIDattr(synID(a:lnum,pos + 1,0),'name') !~? s:syng_strcom
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let idx = stridx('(){}[]', l:line[pos])
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if idx % 2 == 0
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let open_{idx} = open_{idx} + 1
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else
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let open_{idx - 1} = open_{idx - 1} - 1
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endif
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endif
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let pos = match(l:line, '[][(){}]', pos + 1)
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endwhile
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return (!open_4 + !open_2 + !open_0) - 2
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endfunction
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" }}}
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function GetJavascriptIndent()
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if !exists('b:js_cache')
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let b:js_cache = [0,0,0]
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endif
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" Get the current line.
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let l:line = getline(v:lnum)
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let syns = synIDattr(synID(v:lnum, 1, 0), 'name')
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" start with strings,comments,etc.{{{2
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if (l:line !~ '^[''"`]' && syns =~? '\%(string\|template\)') ||
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\ (l:line !~ '^\s*[/*]' && syns =~? s:syng_comment)
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return -1
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endif
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if l:line !~ '^\%(\/\*\|\s*\/\/\)' && syns =~? s:syng_comment
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return cindent(v:lnum)
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endif
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let l:lnum = s:PrevCodeLine(v:lnum - 1)
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if l:lnum == 0
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return 0
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endif
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if (l:line =~# s:expr_case)
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let cpo_switch = &cpo
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set cpo+=%
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let ind = cindent(v:lnum)
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let &cpo = cpo_switch
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return ind
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endif
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"}}}
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" the containing paren, bracket, curly. Memoize, last lineNr either has the
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" same scope or starts a new one, unless if it closed a scope.
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call cursor(v:lnum,1)
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if b:js_cache[0] >= l:lnum && b:js_cache[0] < v:lnum && b:js_cache[0] &&
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\ (b:js_cache[0] > l:lnum || s:Balanced(l:lnum) > 0)
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let num = b:js_cache[1]
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elseif syns != '' && l:line[0] =~ '\s'
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let pattern = syns =~? 'block' ? ['{','}'] : syns =~? 'jsparen' ? ['(',')'] :
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\ syns =~? 'jsbracket'? ['\[','\]'] : ['[({[]','[])}]']
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let num = s:GetPair(pattern[0],pattern[1],'bW',2000)
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else
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let num = s:GetPair('[({[]','[])}]','bW',2000)
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endif
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let b:js_cache = [v:lnum,num,line('.') == v:lnum ? b:js_cache[2] : col('.')]
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if l:line =~ s:line_pre . '[])}]'
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return indent(num)
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endif
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call cursor(b:js_cache[1],b:js_cache[2])
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let swcase = getline(l:lnum) =~# s:expr_case
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let pline = swcase ? getline(l:lnum) : substitute(getline(l:lnum), '\%(:\@<!\/\/.*\)$', '','')
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let inb = num == 0 || num < l:lnum && ((l:line !~ s:line_pre . ',' && pline !~ ',' . s:line_term) || s:IsBlock())
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let switch_offset = num == 0 || s:OneScope(num, strpart(getline(num),0,b:js_cache[2] - 1),1) !=# 'switch' ? 0 :
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\ &cino !~ ':' || !has('float') ? s:sw() :
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\ float2nr(str2float(matchstr(&cino,'.*:\zs[-0-9.]*')) * (&cino =~# '.*:[^,]*s' ? s:sw() : 1))
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" most significant, find the indent amount
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if inb && !swcase && ((l:line =~# g:javascript_opfirst || pline =~# g:javascript_continuation) ||
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\ num < l:lnum && s:OneScope(l:lnum,pline,0) =~# '\<\%(for\|each\|if\|let\|no\sb\|w\%(hile\|ith\)\)\>' &&
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\ l:line !~ s:line_pre . '{')
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return (num > 0 ? indent(num) : -s:sw()) + (s:sw() * 2) + switch_offset
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elseif num > 0
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return indent(num) + s:sw() + switch_offset
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endif
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endfunction
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let &cpo = s:cpo_save
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unlet s:cpo_save
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endif
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