478 lines
15 KiB
VimL
478 lines
15 KiB
VimL
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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: December 4, 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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" 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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" 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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" indent correctly if inside <script>
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" vim/vim@690afe1 for the switch from cindent
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" overridden with b:html_indent_script1
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call extend(g:,{'html_indent_script1': 'inc'},'keep')
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" Regex of syntax group names that are or delimit string or are comments.
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let s:bvars = {
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\ 'syng_strcom': 'string\|comment\|regex\|special\|doc\|template\%(braces\)\@!',
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\ '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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function s:GetVars()
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call extend(b:,extend(s:bvars,{'js_cache': [0,0,0]}),'keep')
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endfunction
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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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" Expression used to check whether we should skip a match with searchpair().
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let s:skip_expr = "s:SynAt(line('.'),col('.')) =~? b:syng_strcom"
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let s:in_comm = s:skip_expr[:-14] . "'comment\\|doc'"
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let s:rel = has('reltime')
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" searchpair() wrapper
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if s:rel
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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,s:l1,a:skip ==# 's:SkipFunc()' ? 2000 : 200)
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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,s:l1)
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endfunction
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endif
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function s:SynAt(l,c)
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let byte = line2byte(a:l) + a:c - 1
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let pos = index(s:synid_cache[0], byte)
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if pos == -1
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let s:synid_cache[:] += [[byte], [synIDattr(synID(a:l, a:c, 0), 'name')]]
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endif
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return s:synid_cache[1][pos]
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endfunction
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function s:ParseCino(f)
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let [s, n, divider] = [strridx(&cino, a:f)+1, '', 0]
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while s && &cino[ s ] =~ '[^,]'
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if &cino[ s ] == '.'
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let divider = 1
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elseif &cino[ s ] ==# 's'
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if n !~ '\d'
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return n . s:sw() + 0
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endif
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let n = str2nr(n) * s:sw()
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break
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else
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let [n, divider] .= [&cino[ s ], 0]
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endif
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let s += 1
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endwhile
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return str2nr(n) / max([divider, 1])
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endfunction
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" Optimized {skip} expr, only callable from the search loop which
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" GetJavascriptIndent does to find the containing [[{(] (side-effects)
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function s:SkipFunc()
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if s:top_col == 1
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throw 'out of bounds'
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elseif s:check_in
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if eval(s:skip_expr)
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return 1
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endif
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let s:check_in = 0
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elseif getline('.') =~ '\%<'.col('.').'c\/.\{-}\/\|\%>'.col('.').'c[''"]\|\\$'
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if eval(s:skip_expr)
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return 1
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endif
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elseif search('\m`\|\${\|\*\/','nW'.s:z,s:looksyn)
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if eval(s:skip_expr)
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let s:check_in = 1
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return 1
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endif
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else
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let s:synid_cache[:] += [[line2byte('.') + col('.') - 1], ['']]
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endif
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let [s:looksyn, s:top_col] = getpos('.')[1:2]
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endfunction
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function s:AlternatePair()
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let [pat, l:for] = ['[][(){};]', 2]
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while s:SearchLoop(pat,'bW','s:SkipFunc()')
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if s:LookingAt() == ';'
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if !l:for
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if s:GetPair('{','}','bW','s:SkipFunc()')
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return
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endif
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break
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else
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let [pat, l:for] = ['[{}();]', l:for - 1]
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endif
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else
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let idx = stridx('])}',s:LookingAt())
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if idx == -1
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return
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elseif !s:GetPair(['\[','(','{'][idx],'])}'[idx],'bW','s:SkipFunc()')
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break
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endif
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endif
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endwhile
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throw 'out of bounds'
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endfunction
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function s:Nat(int)
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return a:int * (a:int > 0)
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endfunction
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function s:LookingAt()
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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:LookingAt() =~ '\k' ? expand('<cword>') : s:LookingAt()
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endfunction
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function s:PreviousToken(...)
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let [l:pos, tok] = [getpos('.'), '']
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if search('\m\k\{1,}\|\S','ebW')
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if getline('.')[col('.')-2:col('.')-1] == '*/'
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if eval(s:in_comm) && !s:SearchLoop('\S\ze\_s*\/[/*]','bW',s:in_comm)
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call setpos('.',l:pos)
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else
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let tok = s:Token()
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endif
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else
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let two = a:0 || line('.') != l:pos[1] ? strridx(getline('.')[:col('.')],'//') + 1 : 0
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if two && eval(s:in_comm)
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call cursor(0,two)
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let tok = s:PreviousToken(1)
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if tok is ''
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call setpos('.',l:pos)
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endif
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else
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let tok = s:Token()
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endif
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endif
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endif
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return tok
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endfunction
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function s:Pure(f,...)
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return eval("[call(a:f,a:000),cursor(a:firstline,".col('.').")][0]")
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endfunction
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function s:SearchLoop(pat,flags,expr)
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return s:GetPair(a:pat,'\_$.',a:flags,a:expr)
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endfunction
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function s:ExprCol()
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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 = 0
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while s:SearchLoop('[{}?:]','bW',s:skip_expr)
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if s:LookingAt() == ':'
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let bal -= !search('\m:\%#','bW')
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elseif s:LookingAt() == '?'
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if getline('.')[col('.'):col('.')+1] =~ '^\.\d\@!'
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" ?. conditional chain, not ternary start
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elseif !bal
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return 1
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else
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let bal += 1
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endif
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elseif s:LookingAt() == '{'
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return !s:IsBlock()
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elseif !s:GetPair('{','}','bW',s:skip_expr)
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break
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endif
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endwhile
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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()
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let tok = matchstr(strpart(getline('.'),col('.')-15,15),s:continuation)
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if tok =~ '[a-z:]'
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return tok == ':' ? s:ExprCol() : s:PreviousToken() != '.'
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elseif tok !~ '[/>]'
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return tok isnot ''
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endif
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return s:SynAt(line('.'),col('.')) !~? (tok == '>' ? 'jsflow\|^html' : 'regex')
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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,line)
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let l:open = 0
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let pos = match(a:line, '[][(){}]')
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while pos != -1
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if s:SynAt(a:lnum,pos + 1) !~? b:syng_strcom
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let l:open += matchend(a: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(a:line, !l:open ? '[][(){}]' : '()' =~ a:line[pos] ?
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\ '[()]' : '{}' =~ a:line[pos] ? '[{}]' : '[][]', 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()
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if s:LookingAt() == ')' && s:GetPair('(', ')', 'bW', s:skip_expr)
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let tok = s:PreviousToken()
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return (count(split('for if let while with'),tok) ||
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\ tok =~# '^await$\|^each$' && s:PreviousToken() ==# 'for') &&
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\ s:Pure('s:PreviousToken') != '.' && !(tok == 'while' && s:DoWhile())
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elseif s:Token() =~# '^else$\|^do$'
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return s:Pure('s:PreviousToken') != '.'
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elseif strpart(getline('.'),col('.')-2,2) == '=>'
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call cursor(0,col('.')-1)
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return s:PreviousToken() != ')' || s:GetPair('(', ')', 'bW', s:skip_expr)
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endif
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endfunction
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function s:DoWhile()
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let cpos = searchpos('\m\<','cbW')
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while s:SearchLoop('\C[{}]\|\<\%(do\|while\)\>','bW',s:skip_expr)
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if s:LookingAt() =~ '\a'
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if s:Pure('s:IsBlock')
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if s:LookingAt() ==# 'd'
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return 1
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endif
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break
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endif
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elseif s:LookingAt() != '}' || !s:GetPair('{','}','bW',s:skip_expr)
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break
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endif
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endwhile
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call call('cursor',cpos)
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endfunction
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" returns total offset from braceless contexts. 'num' is the lineNr which
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" encloses the entire context, 'cont' if whether a:firstline is a continued
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" expression, which could have started in a braceless context
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function s:IsContOne(cont)
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let [l:num, pind] = b:js_cache[1] ?
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\ [b:js_cache[1], indent(b:js_cache[1]) + s:sw()] : [1,0]
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let [ind, b_l] = [indent('.') + !a:cont, 0]
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while line('.') > l:num && ind > pind || line('.') == l:num
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if indent('.') < ind && s:OneScope()
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let b_l += 1
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elseif !a:cont || b_l || ind < indent(a:firstline)
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break
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else
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call cursor(0,1)
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endif
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let ind = min([ind, indent('.')])
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if s:PreviousToken() is ''
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break
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endif
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endwhile
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return b_l
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endfunction
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function s:IsSwitch()
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return search(printf('\m\C\%%%dl\%%%dc%s',b:js_cache[1],b:js_cache[2],
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\ '{\_s*\%(\%(\/\/.*\_$\|\/\*\_.\{-}\*\/\)\@>\_s*\)*\%(case\|default\)\>'),'nW'.s:z)
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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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let tok = s:PreviousToken()
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if join(s:stack) =~? 'xml\|jsx' && s:SynAt(line('.'),col('.')-1) =~? 'xml\|jsx'
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let s:in_jsx = 1
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return tok != '{'
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elseif tok =~ '\k'
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if tok ==# 'type'
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return s:Pure('eval',"s:PreviousToken() !~# '^\\%(im\\|ex\\)port$' || s:PreviousToken() == '.'")
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elseif tok ==# 'of'
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return s:Pure('eval',"!s:GetPair('[[({]','[])}]','bW',s:skip_expr) || s:LookingAt() != '(' ||"
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\ ."s:{s:PreviousToken() ==# 'await' ? 'Previous' : ''}Token() !=# 'for' || s:PreviousToken() == '.'")
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endif
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return index(split('return const let import export extends yield default delete var await void typeof throw case new in instanceof')
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\ ,tok) < (line('.') != a:firstline) || s:Pure('s:PreviousToken') == '.'
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elseif tok == '>'
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return getline('.')[col('.')-2] == '=' || s:SynAt(line('.'),col('.')) =~? 'jsflow\|^html'
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elseif tok == '*'
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return s:Pure('s:PreviousToken') == ':'
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elseif tok == ':'
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return s:Pure('eval',"s:PreviousToken() =~ '^\\K\\k*$' && !s:ExprCol()")
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|
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elseif tok == '/'
|
||
|
|
return s:SynAt(line('.'),col('.')) =~? 'regex'
|
||
|
|
elseif tok !~ '[=~!<,.?^%|&([]'
|
||
|
|
return tok !~ '[-+]' || line('.') != a:firstline && getline('.')[col('.')-2] == tok
|
||
|
|
endif
|
||
|
|
endfunction
|
||
|
|
|
||
|
|
function GetJavascriptIndent()
|
||
|
|
call s:GetVars()
|
||
|
|
let s:synid_cache = [[],[]]
|
||
|
|
let l:line = getline(v:lnum)
|
||
|
|
" use synstack as it validates syn state and works in an empty line
|
||
|
|
let s:stack = [''] + map(synstack(v:lnum,1),"synIDattr(v:val,'name')")
|
||
|
|
|
||
|
|
" start with strings,comments,etc.
|
||
|
|
if s:stack[-1] =~? 'comment\|doc'
|
||
|
|
if l:line !~ '^\s*\/[/*]'
|
||
|
|
return l:line =~ '^\s*\*' ? cindent(v:lnum) : -1
|
||
|
|
endif
|
||
|
|
elseif s:stack[-1] =~? b:syng_str
|
||
|
|
if b:js_cache[0] == v:lnum - 1 && s:Balanced(v:lnum-1,getline(v:lnum-1))
|
||
|
|
let b:js_cache[0] = v:lnum
|
||
|
|
endif
|
||
|
|
return -1
|
||
|
|
endif
|
||
|
|
|
||
|
|
let nest = get(get(b:,'hi_indent',{}),'blocklnr')
|
||
|
|
let s:l1 = max([0, prevnonblank(v:lnum) - (s:rel ? 2000 : 1000), nest])
|
||
|
|
call cursor(v:lnum,1)
|
||
|
|
if s:PreviousToken() is ''
|
||
|
|
return
|
||
|
|
endif
|
||
|
|
let [l:lnum, lcol, pline] = getpos('.')[1:2] + [getline('.')[:col('.')-1]]
|
||
|
|
|
||
|
|
let l:line = substitute(l:line,'^\s*','','')
|
||
|
|
let l:line_s = l:line[0]
|
||
|
|
if l:line[:1] == '/*'
|
||
|
|
let l:line = substitute(l:line,'^\%(\/\*.\{-}\*\/\s*\)*','','')
|
||
|
|
endif
|
||
|
|
if l:line =~ '^\/[/*]'
|
||
|
|
let l:line = ''
|
||
|
|
endif
|
||
|
|
|
||
|
|
" the containing paren, bracket, or curly. Many hacks for performance
|
||
|
|
call cursor(v:lnum,1)
|
||
|
|
let idx = index([']',')','}'],l:line[0])
|
||
|
|
if b:js_cache[0] > l:lnum && b:js_cache[0] < v:lnum ||
|
||
|
|
\ b:js_cache[0] == l:lnum && s:Balanced(l:lnum,pline)
|
||
|
|
call call('cursor',b:js_cache[1:])
|
||
|
|
else
|
||
|
|
let [s:looksyn, s:top_col, s:check_in, s:l1] = [v:lnum - 1,0,0,
|
||
|
|
\ max([s:l1, &smc ? search('\m^.\{'.&smc.',}','nbW',s:l1 + 1) + 1 : 0])]
|
||
|
|
try
|
||
|
|
if idx != -1
|
||
|
|
call s:GetPair(['\[','(','{'][idx],'])}'[idx],'bW','s:SkipFunc()')
|
||
|
|
elseif getline(v:lnum) !~ '^\S' && s:stack[-1] =~? 'block\|^jsobject$'
|
||
|
|
if !s:GetPair('{','}','bW','s:SkipFunc()') && s:stack[-1] ==# 'jsObject'
|
||
|
|
return indent(l:lnum)
|
||
|
|
endif
|
||
|
|
else
|
||
|
|
call s:AlternatePair()
|
||
|
|
endif
|
||
|
|
catch /^\Cout of bounds$/
|
||
|
|
call cursor(v:lnum,1)
|
||
|
|
endtry
|
||
|
|
let b:js_cache[1:] = line('.') == v:lnum ? [0,0] : getpos('.')[1:2]
|
||
|
|
endif
|
||
|
|
|
||
|
|
let [b:js_cache[0], num] = [v:lnum, b:js_cache[1]]
|
||
|
|
|
||
|
|
let [num_ind, is_op, b_l, l:switch_offset, s:in_jsx] = [s:Nat(indent(num)),0,0,0,0]
|
||
|
|
if !num || s:LookingAt() == '{' && s:IsBlock()
|
||
|
|
let ilnum = line('.')
|
||
|
|
if num && !s:in_jsx && s:LookingAt() == ')' && s:GetPair('(',')','bW',s:skip_expr)
|
||
|
|
if ilnum == num
|
||
|
|
let [num, num_ind] = [line('.'), indent('.')]
|
||
|
|
endif
|
||
|
|
if idx == -1 && s:PreviousToken() ==# 'switch' && s:IsSwitch()
|
||
|
|
let l:switch_offset = &cino !~ ':' ? s:sw() : s:ParseCino(':')
|
||
|
|
if pline[-1:] != '.' && l:line =~# '^\%(default\|case\)\>'
|
||
|
|
return s:Nat(num_ind + l:switch_offset)
|
||
|
|
elseif &cino =~ '='
|
||
|
|
let l:case_offset = s:ParseCino('=')
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
if idx == -1 && pline[-1:] !~ '[{;]'
|
||
|
|
call cursor(l:lnum, lcol)
|
||
|
|
let sol = matchstr(l:line,s:opfirst)
|
||
|
|
if sol is '' || sol == '/' && s:SynAt(v:lnum,
|
||
|
|
\ 1 + len(getline(v:lnum)) - len(l:line)) =~? 'regex'
|
||
|
|
if s:Continues()
|
||
|
|
let is_op = s:sw()
|
||
|
|
endif
|
||
|
|
elseif num && sol =~# '^\%(in\%(stanceof\)\=\|\*\)$' &&
|
||
|
|
\ s:LookingAt() == '}' && s:GetPair('{','}','bW',s:skip_expr) &&
|
||
|
|
\ s:PreviousToken() == ')' && s:GetPair('(',')','bW',s:skip_expr) &&
|
||
|
|
\ (s:PreviousToken() == ']' || s:LookingAt() =~ '\k' &&
|
||
|
|
\ s:{s:PreviousToken() == '*' ? 'Previous' : ''}Token() !=# 'function')
|
||
|
|
return num_ind + s:sw()
|
||
|
|
else
|
||
|
|
let is_op = s:sw()
|
||
|
|
endif
|
||
|
|
call cursor(l:lnum, lcol)
|
||
|
|
let b_l = s:Nat(s:IsContOne(is_op) - (!is_op && l:line =~ '^{')) * s:sw()
|
||
|
|
endif
|
||
|
|
elseif idx == -1 && s:LookingAt() == '(' && &cino =~ '(' &&
|
||
|
|
\ (search('\m\S','nbW',num) || s:ParseCino('U'))
|
||
|
|
let pval = s:ParseCino('(')
|
||
|
|
if !pval
|
||
|
|
let [Wval, vcol] = [s:ParseCino('W'), virtcol('.')]
|
||
|
|
if search('\m'.get(g:,'javascript_indent_W_pat','\S'),'W',num)
|
||
|
|
return s:ParseCino('w') ? vcol : virtcol('.')-1
|
||
|
|
endif
|
||
|
|
return Wval ? s:Nat(num_ind + Wval) : vcol
|
||
|
|
endif
|
||
|
|
return s:Nat(num_ind + pval + searchpair('\m(','','\m)','nbrmW',s:skip_expr,num) * s:sw())
|
||
|
|
endif
|
||
|
|
|
||
|
|
" main return
|
||
|
|
if l:line =~ '^[])}]\|^|}'
|
||
|
|
if l:line_s == ')'
|
||
|
|
if s:ParseCino('M')
|
||
|
|
return indent(l:lnum)
|
||
|
|
elseif num && &cino =~# 'm' && !s:ParseCino('m')
|
||
|
|
return virtcol('.') - 1
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
return num_ind
|
||
|
|
elseif num
|
||
|
|
return s:Nat(num_ind + get(l:,'case_offset',s:sw()) + l:switch_offset + b_l + is_op)
|
||
|
|
elseif nest
|
||
|
|
return indent(nextnonblank(nest+1)) + b_l + is_op
|
||
|
|
endif
|
||
|
|
return b_l + is_op
|
||
|
|
endfunction
|
||
|
|
|
||
|
|
let &cpo = s:cpo_save
|
||
|
|
unlet s:cpo_save
|