199 lines
6.5 KiB
VimL
199 lines
6.5 KiB
VimL
" 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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" Acknowledgement: Based off of vim-ruby maintained by Nikolai Weibull http://vim-ruby.rubyforge.org
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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
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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< 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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func s:sw()
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return shiftwidth()
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endfunc
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else
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func s:sw()
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return &sw
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endfunc
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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*:\C'
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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 = '\%(string\|regex\|special\|doc\|comment\|template\)\c'
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" Regex of syntax group names that are strings or documentation.
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let s:syng_comment = '\%(comment\|doc\)\c'
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" Expression used to check whether we should skip a match with searchpair().
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let s:skip_expr = "line('.') < (prevnonblank(v:lnum) - 2000) ? dummy : s:IsSyn(line('.'),col('.'),'')"
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func s:lookForParens(start,end,flags,time)
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try
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return searchpair(a:start,'',a:end,a:flags,s:skip_expr,0,a:time)
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catch /E118/
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return searchpair(a:start,'',a:end,a:flags,0,0)
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endtry
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endfunc
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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\)\=\>\)\C'
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endif
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let g:javascript_opfirst = s:line_pre . g:javascript_opfirst
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if !exists('g:javascript_continuation')
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let g:javascript_continuation = '\%([*,.?:^%]\|+\@<!+\|-\@<!-\|\*\@<!\/\|=\||\|&\|\<in\%(stanceof\)\=\)\C'
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endif
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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\|=>' . (a:add ? '\|\<try\|\<finally' : '' ) . '\)\C' . s:line_term ||
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\ (a:add && a:text =~ s:line_pre . s:line_term && getline(s:PrevCodeLine(a:lnum - 1)) =~ ')' . s:line_term) ||
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\ (cursor(a:lnum, match(a:text, ')' . s:line_term)) > -1 &&
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\ s:lookForParens('(', ')', 'cbW', 100) > 0 &&
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\ search((a:add ? '\%(function\*\|[A-Za-z_$][0-9A-Za-z_$]*\)\C' :
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\ '\<\%(for\%(\s+each\)\=\|if\|let\|switch\|while\|with\)\C') . '\_s*\%#','bW')) &&
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\ (a:add || (expand("<cword>") == 'while' ? !s:lookForParens('\<do\>\C', '\<while\>\C','bW',100) : 1))
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endfunction
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" Auxiliary Functions {{{2
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" Check if the character at lnum:col is inside a string, comment, or is ascii.
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function s:IsSyn(lnum, col, reg)
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return synIDattr(synID(a:lnum, a:col, 1), 'name') =~? (a:reg != '' ? a:reg : s:syng_strcom)
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endfunction
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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 lnum = prevnonblank(a:lnum)
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while lnum > 0
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if !s:IsSyn(lnum, matchend(getline(lnum), '^\s*[^''"]'),'')
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break
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endif
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let lnum = prevnonblank(lnum - 1)
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endwhile
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return lnum
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endfunction
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" Check if line 'lnum' has more opening brackets than closing ones.
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function s:LineHasOpeningBrackets(lnum)
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let open_0 = 0
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let open_2 = 0
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let open_4 = 0
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let line = getline(a:lnum)
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let pos = match(line, '[][(){}]', 0)
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let last = 0
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while pos != -1
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if !s:IsSyn(a:lnum, pos + 1, '')
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let idx = stridx('(){}[]', line[pos])
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if idx % 2 == 0
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let open_{idx} = open_{idx} + 1
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let last = pos
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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(line, '[][(){}]', pos + 1)
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endwhile
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return [(open_0 > 0 ? 1 : (open_0 == 0 ? 0 : 2)) . (open_2 > 0 ? 1 : (open_2 == 0 ? 0 : 2)) .
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\ (open_4 > 0 ? 1 : (open_4 == 0 ? 0 : 2)), last]
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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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end
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" Get the current line.
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let line = getline(v:lnum)
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" previous nonblank line number
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let prevline = prevnonblank(v:lnum - 1)
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" previous line of code
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let lnum = s:PrevCodeLine(v:lnum - 1)
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if lnum == 0
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return 0
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endif
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" start with strings,comments,etc.{{{2
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if (line !~ '^[''"`]' && s:IsSyn(v:lnum,1,'string\|template')) ||
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\ (line !~ '^\s*[/*]' && s:IsSyn(v:lnum,1,s:syng_comment))
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return -1
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endif
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if line !~ '^\%(\/\*\|\s*\/\/\)' && s:IsSyn(v:lnum,1,s:syng_comment)
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return cindent(v:lnum)
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endif
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if (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
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let pcounts = [0]
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if b:js_cache[0] >= lnum && b:js_cache[0] <= v:lnum && b:js_cache[0] &&
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\ (b:js_cache[0] > lnum || map(pcounts,'s:LineHasOpeningBrackets(lnum)')[0][0] !~ '2')
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let num = pcounts[0][0] =~ '1' ? lnum : b:js_cache[1]
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if pcounts[0][0] =~'1'
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call cursor(lnum,pcounts[0][1])
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end
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else
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call cursor(v:lnum,1)
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let syns = synIDattr(synID(v:lnum, 1, 1), 'name')
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if line[0] =~ '\s' && syns != ''
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let pattern = syns =~? 'funcblock' ? ['{','}'] : syns =~? 'jsparen' ? ['(',')'] : syns =~? 'jsbracket'? ['\[','\]'] :
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\ ['(\|{\|\[',')\|}\|\]']
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let num = s:lookForParens(pattern[0],pattern[1],'bW',2000)
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else
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let num = s:lookForParens('(\|{\|\[',')\|}\|\]','bW',2000)
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end
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end
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let b:js_cache = [v:lnum,num,line('.') == v:lnum ? b:js_cache[2] : col('.')]
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" most significant part
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if line =~ s:line_pre . '[])}]'
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return indent(num)
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end
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let inb = num == 0 ? 1 : s:Onescope(num, strpart(getline(num),0,b:js_cache[2] - 1),1)
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let switch_offset = (!inb || num == 0) || expand("<cword>") != 'switch' ? 0 : &cino !~ ':' || !has('float') ? s:sw() :
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\ float2nr(str2float(matchstr(&cino,'.*:\zs[-0-9.]*')) * (match(&cino,'.*:\zs[^,]*s') ? s:sw() : 1))
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if ((line =~ g:javascript_opfirst ||
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\ (getline(lnum) =~ g:javascript_continuation && getline(lnum) !~ s:expr_case)) &&
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\ inb) || (s:Onescope(lnum,getline(lnum),0) && 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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end
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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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