462 lines
14 KiB
VimL
462 lines
14 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: Chris Paul ( https://github.com/bounceme )
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" URL: https://github.com/pangloss/vim-javascript
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" Last Change: May 16, 2017
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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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" indent correctly if inside <script>
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" vim/vim@690afe1 for the switch from cindent
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let b:html_indent_script1 = 'inc'
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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 autoindent nolisp nosmartindent
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setlocal indentkeys+=0],0)
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" Testable with something like:
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" vim -eNs "+filetype plugin indent on" "+syntax on" "+set ft=javascript" \
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" "+norm! gg=G" '+%print' '+:q!' testfile.js \
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" | diff -uBZ testfile.js -
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let b:undo_indent = 'setlocal indentexpr< smartindent< autoindent< indentkeys<'
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" Regex of syntax group names that are or delimit string or are comments.
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let b:syng_strcom = get(b:,'syng_strcom','string\|comment\|regex\|special\|doc\|template\%(braces\)\@!')
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let b:syng_str = get(b:,'syng_str','string\|template\|special')
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" template strings may want to be excluded when editing graphql:
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" au! Filetype javascript let b:syng_str = '^\%(.*template\)\@!.*string\|special'
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" au! Filetype javascript let b:syng_strcom = '^\%(.*template\)\@!.*string\|comment\|regex\|special\|doc'
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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 &l:shiftwidth ? &l:shiftwidth : &l:tabstop
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endfunction
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endif
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" Performance for forwards search(): start search at pos rather than masking
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" matches before pos.
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let s:z = has('patch-7.4.984') ? 'z' : ''
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let s:syng_com = '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 = "s:syn_at(line('.'),col('.')) =~? b:syng_strcom"
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" searchpair() wrapper
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if has('reltime')
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function s:GetPair(start,end,flags,skip,time,...)
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return searchpair('\m'.a:start,'','\m'.a:end,a:flags,a:skip,max([prevnonblank(v:lnum) - 2000,0] + a:000),a:time)
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endfunction
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else
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function s:GetPair(start,end,flags,skip,...)
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return searchpair('\m'.a:start,'','\m'.a:end,a:flags,a:skip,max([prevnonblank(v:lnum) - 1000,get(a:000,1)]))
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endfunction
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endif
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function s:syn_at(l,c)
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let pos = join([a:l,a:c],',')
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if has_key(s:synId_cache,pos)
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return s:synId_cache[pos]
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endif
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let s:synId_cache[pos] = synIDattr(synID(a:l,a:c,0),'name')
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return s:synId_cache[pos]
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endfunction
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function s:parse_cino(f)
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let [cin, divider, n] = [strridx(&cino,a:f), 0, '']
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if cin == -1
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return
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endif
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let [sign, cstr] = &cino[cin+1] ==# '-' ? [-1, &cino[cin+2:]] : [1, &cino[cin+1:]]
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for c in split(cstr,'\zs')
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if c ==# '.' && !divider
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let divider = 1
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elseif c ==# 's'
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if n is ''
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let n = s:W
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else
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let n = str2nr(n) * s:W
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endif
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break
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elseif c =~ '\d'
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let [n, divider] .= [c, 0]
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else
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break
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endif
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endfor
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return sign * str2nr(n) / max([str2nr(divider),1])
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endfunction
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" Optimized {skip} expr, used only once per GetJavascriptIndent() call
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function s:skip_func()
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if s:topCol == 1 || line('.') < s:scriptTag
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return {} " E728, used as limit condition for loops and searchpair()
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endif
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let s:topCol = col('.')
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if getline('.') =~ '\%<'.s:topCol.'c\/.\{-}\/\|\%>'.s:topCol.'c[''"]\|\\$'
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if eval(s:skip_expr)
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let s:topCol = 0
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endif
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return !s:topCol
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elseif s:checkIn || search('\m`\|\${\|\*\/','nW'.s:z,s:looksyn)
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let s:checkIn = eval(s:skip_expr)
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if s:checkIn
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let s:topCol = 0
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endif
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endif
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let s:looksyn = line('.')
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return s:checkIn
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endfunction
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function s:alternatePair()
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let [l:pos, pat, l:for] = [getpos('.'), '[][(){};]', 3]
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while search('\m'.pat,'bW')
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if s:skip_func() | continue | endif
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let idx = stridx('])};',s:looking_at())
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if idx is 3
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if l:for is 1
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return s:GetPair('{','}','bW','s:skip_func()',2000) > 0 || setpos('.',l:pos)
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endif
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let [pat, l:for] = ['[{}();]', l:for - 1]
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elseif idx + 1
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if s:GetPair(['\[','(','{'][idx], '])}'[idx],'bW','s:skip_func()',2000) < 1
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break
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endif
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else
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return
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endif
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endwhile
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call setpos('.',l:pos)
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endfunction
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function s:looking_at()
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return getline('.')[col('.')-1]
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endfunction
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function s:token()
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return s:looking_at() =~ '\k' ? expand('<cword>') : s:looking_at()
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endfunction
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function s:previous_token()
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let l:pos = getpos('.')
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if search('\m\k\{1,}\|\S','ebW')
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if (strpart(getline('.'),col('.')-2,2) == '*/' || line('.') != l:pos[1] &&
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\ getline('.')[:col('.')-1] =~ '\/\/') && s:syn_at(line('.'),col('.')) =~? s:syng_com
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while search('\m\S\ze\_s*\/[/*]','bW')
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if s:syn_at(line('.'),col('.')) !~? s:syng_com
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return s:token()
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endif
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endwhile
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else
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return s:token()
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endif
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call setpos('.',l:pos)
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endif
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return ''
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endfunction
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for s:__ in ['__previous_token','__IsBlock']
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function s:{s:__}(...)
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let l:pos = getpos('.')
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try
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return call('s:'.matchstr(expand('<sfile>'),'.*__\zs\w\+'),a:000)
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catch
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finally
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call setpos('.',l:pos)
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endtry
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endfunction
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endfor
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function s:expr_col()
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if getline('.')[col('.')-2] == ':'
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return 1
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endif
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let [bal, l:pos] = [0, getpos('.')]
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while bal < 1 && search('\m[{}?:;]','bW',s:scriptTag)
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if eval(s:skip_expr)
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continue
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elseif s:looking_at() == ':'
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let bal -= strpart(getline('.'),col('.')-2,3) !~ '::'
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elseif s:looking_at() == '?'
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let bal += 1
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elseif s:looking_at() == '{' && getpos('.')[1:2] != b:js_cache[1:] && !s:IsBlock()
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let bal = 1
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elseif s:looking_at() != '}' || s:GetPair('{','}','bW',s:skip_expr,200) < 1
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break
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endif
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endwhile
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call setpos('.',l:pos)
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return max([bal,0])
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endfunction
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" configurable regexes that define continuation lines, not including (, {, or [.
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let s:opfirst = '^' . get(g:,'javascript_opfirst',
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\ '\C\%([<>=,?^%|*/&]\|\([-.:+]\)\1\@!\|!=\|in\%(stanceof\)\=\>\)')
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let s:continuation = get(g:,'javascript_continuation',
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\ '\C\%([<=,.~!?/*^%|&:]\|+\@<!+\|-\@<!-\|=\@<!>\|\<\%(typeof\|new\|delete\|void\|in\|instanceof\|await\)\)') . '$'
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function s:continues(ln,con)
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let token = matchstr(a:con[-15:],s:continuation)
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if strlen(token)
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call cursor(a:ln,strlen(a:con))
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if token =~ '[/>]'
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return s:syn_at(a:ln,col('.')) !~? (token == '>' ? 'jsflow\|^html' : 'regex')
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elseif token =~ '\l'
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return s:previous_token() != '.'
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elseif token == ':'
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return s:expr_col()
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endif
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return 1
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endif
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endfunction
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function s:Trim(ln)
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let pline = substitute(getline(a:ln),'\s*$','','')
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let l:max = max([strridx(pline,'//'), strridx(pline,'/*')])
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while l:max != -1 && s:syn_at(a:ln, strlen(pline)) =~? s:syng_com
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let pline = pline[: l:max]
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let l:max = max([strridx(pline,'//'), strridx(pline,'/*')])
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let pline = substitute(pline[:-2],'\s*$','','')
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endwhile
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return pline
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endfunction
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" Find line above 'lnum' that isn't empty or in a comment
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function s:PrevCodeLine(lnum)
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let l:n = prevnonblank(a:lnum)
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while l:n
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if getline(l:n) =~ '^\s*\/[/*]'
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if (stridx(getline(l:n),'`') > 0 || getline(l:n-1)[-1:] == '\') &&
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\ s:syn_at(l:n,1) =~? b:syng_str
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break
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endif
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let l:n = prevnonblank(l:n-1)
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elseif stridx(getline(l:n), '*/') + 1 && s:syn_at(l:n,1) =~? s:syng_com
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let l:pos = getpos('.')
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call cursor(l:n,1)
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let l:n = search('\m\S\_s*\/\*','nbW')
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call setpos('.',l:pos)
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else
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break
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endif
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endwhile
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return l:n
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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 l:open = 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 s:syn_at(a:lnum,pos + 1) !~? b:syng_strcom
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let l:open += match(' ' . l:line[pos],'[[({]')
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if l:open < 0
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return
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endif
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endif
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let pos = match(l:line, (l:open ?
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\ '['.matchstr(['][','()','{}'],l:line[pos]).']' :
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\ '[][(){}]'), pos + 1)
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endwhile
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return !l:open
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endfunction
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function s:OneScope(lnum)
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let pline = s:Trim(a:lnum)
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call cursor(a:lnum,strlen(pline))
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let kw = 'else do'
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if pline[-1:] == ')' && s:GetPair('(', ')', 'bW', s:skip_expr, 100) > 0
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if s:previous_token() =~# '^\%(await\|each\)$'
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call s:previous_token()
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let kw = 'for'
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else
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let kw = 'for if let while with'
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endif
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endif
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return pline[-2:] == '=>' || index(split(kw),s:token()) + 1 &&
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\ s:__previous_token() != '.' && !s:doWhile()
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endfunction
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function s:doWhile()
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if expand('<cword>') ==# 'while'
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let [bal, l:pos] = [0, getpos('.')]
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call search('\m\<','cbW')
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while bal < 1 && search('\m\C[{}]\|\<\%(do\|while\)\>','bW')
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if eval(s:skip_expr)
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continue
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elseif s:looking_at() ==# 'd'
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let bal += s:__IsBlock(1)
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elseif s:looking_at() ==# 'w'
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let bal -= s:__previous_token() != '.'
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elseif s:looking_at() != '}' || s:GetPair('{','}','bW',s:skip_expr,200) < 1
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break
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endif
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endwhile
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call setpos('.',l:pos)
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return max([bal,0])
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endif
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endfunction
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" returns braceless levels started by 'i' and above lines * &sw. 'num' is the
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" lineNr which encloses the entire context, 'cont' if whether line 'i' + 1 is
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" a continued expression, which could have started in a braceless context
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function s:iscontOne(i,num,cont)
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let [l:i, l:num, bL] = [a:i, a:num + !a:num, 0]
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let pind = a:num ? indent(l:num) + s:W : 0
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let ind = indent(l:i) + (a:cont ? 0 : s:W)
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while l:i >= l:num && (ind > pind || l:i == l:num)
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if indent(l:i) < ind && s:OneScope(l:i)
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let bL += s:W
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let l:i = line('.')
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elseif !a:cont || bL || ind < indent(a:i)
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break
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endif
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let ind = min([ind, indent(l:i)])
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let l:i = s:PrevCodeLine(l:i - 1)
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endwhile
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return bL
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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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if a:0 || s:looking_at() == '{'
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let l:n = line('.')
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let char = s:previous_token()
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if match(s:stack,'\cxml\|jsx') + 1 && s:syn_at(line('.'),col('.')-1) =~? 'xml\|jsx'
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return char != '{'
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elseif char =~ '\k'
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if char ==# 'type'
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return s:__previous_token() !~# '^\%(im\|ex\)port$'
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endif
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return index(split('return const let import export extends yield default delete var await void typeof throw case new of in instanceof')
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\ ,char) < (line('.') != l:n) || s:__previous_token() == '.'
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elseif char == '>'
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return getline('.')[col('.')-2] == '=' || s:syn_at(line('.'),col('.')) =~? 'jsflow\|^html'
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elseif char == '*'
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return s:__previous_token() == ':'
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elseif char == ':'
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return !s:expr_col()
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elseif char == '/'
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return s:syn_at(line('.'),col('.')) =~? 'regex'
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endif
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return char !~ '[=~!<,.?^%|&([]' &&
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\ (char !~ '[-+]' || l:n != line('.') && getline('.')[col('.')-2] == char)
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endif
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endfunction
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function GetJavascriptIndent()
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let b:js_cache = get(b:,'js_cache',[0,0,0])
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let s:synId_cache = {}
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" Get the current line.
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call cursor(v:lnum,1)
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let l:line = getline('.')
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" use synstack as it validates syn state and works in an empty line
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let s:stack = map(synstack(v:lnum,1),"synIDattr(v:val,'name')")
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let syns = get(s:stack,-1,'')
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" start with strings,comments,etc.
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if syns =~? s:syng_com
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if l:line =~ '^\s*\*'
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return cindent(v:lnum)
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elseif l:line !~ '^\s*\/[/*]'
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return -1
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endif
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elseif syns =~? b:syng_str
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if b:js_cache[0] == v:lnum - 1 && s:Balanced(v:lnum-1)
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let b:js_cache[0] = v:lnum
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endif
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return -1
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endif
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let l:lnum = s:PrevCodeLine(v:lnum - 1)
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if !l:lnum
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return
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endif
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let l:line = substitute(l:line,'^\s*','','')
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if l:line[:1] == '/*'
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let l:line = substitute(l:line,'^\%(\/\*.\{-}\*\/\s*\)*','','')
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endif
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if l:line =~ '^\/[/*]'
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let l:line = ''
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endif
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" the containing paren, bracket, or curly. Many hacks for performance
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let [ s:scriptTag, idx ] = [ get(get(b:,'hi_indent',{}),'blocklnr'),
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\ index([']',')','}'],l:line[0]) ]
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if b:js_cache[0] >= l:lnum && b:js_cache[0] < v:lnum &&
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\ (b:js_cache[0] > l:lnum || s:Balanced(l:lnum))
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call call('cursor',b:js_cache[2] ? b:js_cache[1:] : [0,0])
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else
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let [s:looksyn, s:checkIn, s:topCol] = [v:lnum - 1, 0, 0]
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if idx + 1
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call s:GetPair(['\[','(','{'][idx],'])}'[idx],'bW','s:skip_func()',2000)
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elseif getline(v:lnum) !~ '^\S' && syns =~? 'block'
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call s:GetPair('{','}','bW','s:skip_func()',2000)
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else
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call s:alternatePair()
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endif
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endif
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let b:js_cache = [v:lnum] + (line('.') == v:lnum ? [s:scriptTag,0] : getpos('.')[1:2])
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let num = b:js_cache[1]
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let [s:W, isOp, bL, switch_offset] = [s:sw(),0,0,0]
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if !b:js_cache[2] || s:IsBlock()
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let ilnum = line('.')
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let pline = s:Trim(l:lnum)
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if b:js_cache[2] && s:looking_at() == ')' && s:GetPair('(',')','bW',s:skip_expr,100) > 0
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let num = ilnum == num ? line('.') : num
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if idx < 0 && s:previous_token() ==# 'switch' && s:previous_token() != '.'
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let switch_offset = &cino !~ ':' ? s:W : max([-indent(num),s:parse_cino(':')])
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if pline[-1:] != '.' && l:line =~# '^\%(default\|case\)\>'
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return indent(num) + switch_offset
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endif
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endif
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endif
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if idx < 0 && pline[-1:] !~ '[{;]'
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let isOp = (l:line =~# s:opfirst || s:continues(l:lnum,pline)) * s:W
|
|
let bL = s:iscontOne(l:lnum,b:js_cache[1],isOp)
|
|
let bL -= (bL && l:line[0] == '{') * s:W
|
|
endif
|
|
elseif idx < 0 && getline(b:js_cache[1])[b:js_cache[2]-1] == '(' && &cino =~ '('
|
|
let pval = s:parse_cino('(')
|
|
return !pval || !search('\m\S','nbW',num) && !s:parse_cino('U') ?
|
|
\ (s:parse_cino('w') ? 0 : -!!search('\m\S','W'.s:z,num)) + virtcol('.') :
|
|
\ max([indent('.') + pval + s:GetPair('(',')','nbrmW',s:skip_expr,100,num) * s:W,0])
|
|
endif
|
|
|
|
" main return
|
|
if l:line =~ '^[])}]\|^|}'
|
|
return max([indent(num),0])
|
|
elseif num
|
|
return indent(num) + s:W + switch_offset + bL + isOp
|
|
endif
|
|
return bL + isOp
|
|
endfunction
|
|
|
|
let &cpo = s:cpo_save
|
|
unlet s:cpo_save
|
|
|
|
endif
|