mirror of
https://github.com/neovim/neovim.git
synced 2025-10-26 12:27:24 +00:00
365 lines
11 KiB
VimL
365 lines
11 KiB
VimL
" 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 31, 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 autoindent nolisp nosmartindent
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setlocal indentkeys+=0],0)
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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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" 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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" 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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" Regex of syntax group names that are or delimit string or are comments.
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let s:syng_strcom = 'string\|comment\|regex\|special\|doc\|template'
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let s:syng_str = 'string\|template'
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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 = "synIDattr(synID(line('.'),col('.'),0),'name') =~? '".s:syng_strcom."'"
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function s:skip_func()
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if !s:free || search('\m`\|\*\/','nW',s:looksyn)
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let s:free = !eval(s:skip_expr)
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let s:looksyn = s:free ? line('.') : s:looksyn
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return !s:free
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endif
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let s:looksyn = line('.')
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return (search('\m\/','nbW',s:looksyn) || search('\m[''"]\|\\$','nW',s:looksyn)) && eval(s:skip_expr)
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endfunction
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function s:alternatePair(stop)
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let pos = getpos('.')[1:2]
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while search('\m[][(){}]','bW',a:stop)
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if !s:skip_func()
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let idx = stridx('])}',s:looking_at())
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if idx + 1
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if !s:GetPair(['\[','(','{'][idx], '])}'[idx],'bW','s:skip_func()',2000,a:stop)
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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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endif
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endwhile
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call call('cursor',pos)
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endfunction
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function s:save_pos(f,...)
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let l:pos = getpos('.')[1:2]
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let ret = call(a:f,a:000)
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call call('cursor',l:pos)
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return ret
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endfunction
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function s:syn_at(l,c)
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return synIDattr(synID(a:l,a:c,0),'name')
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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:b_token()
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if s:looking_at() =~ '\k'
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call search('\m\<','cbW')
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endif
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return search('\m\S','bW')
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endfunction
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function s:previous_token()
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let l:n = line('.')
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while s:b_token()
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if (s:looking_at() == '/' || line('.') != l:n && search('\m\/\/','nbW',
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\ line('.'))) && s:syn_at(line('.'),col('.')) =~? s:syng_com
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call search('\m\_[^/]\zs\/[/*]','bW')
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else
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return s:token()
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endif
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endwhile
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return ''
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endfunction
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function s:others(p)
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return "((line2byte(line('.')) + col('.')) <= ".(line2byte(a:p[0]) + a:p[1]).") || ".s:skip_expr
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endfunction
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function s:tern_skip(p)
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return s:GetPair('{','}','nbW',s:others(a:p),200,a:p[0]) > 0
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endfunction
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function s:tern_col(p)
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return s:GetPair('?',':\@<!::\@!','nbW',s:others(a:p)
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\ .' || s:tern_skip('.string(a:p).')',200,a:p[0]) > 0
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endfunction
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function s:label_col()
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let pos = getpos('.')[1:2]
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let [s:looksyn,s:free] = pos
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call s:alternatePair(0)
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if s:save_pos('s:IsBlock')
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let poss = getpos('.')[1:2]
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return call('cursor',pos) || !s:tern_col(poss)
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elseif s:looking_at() == ':'
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return !s:tern_col([0,0])
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endif
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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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\ '\%([<>=,?^%|*/&]\|\([-.:+]\)\1\@!\|!=\|in\%(stanceof\)\=\>\)')
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let s:continuation = get(g:,'javascript_continuation',
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\ '\%([<=,.~!?/*^%|&:]\|+\@<!+\|-\@<!-\|=\@<!>\|\<\%(typeof\|delete\|void\|in\|instanceof\)\)') . '$'
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function s:continues(ln,con)
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return !cursor(a:ln, match(' '.a:con,s:continuation)) &&
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\ eval((['s:syn_at(line("."),col(".")) !~? "regex"'] +
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\ repeat(['s:previous_token() != "."'],5) + [1])[
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\ index(split('/ typeof in instanceof void delete'),s:token())])
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endfunction
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" get the line of code stripped of comments and move cursor to the last
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" non-comment char.
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function s:Trim(ln)
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let pline = substitute(getline(a:ln),'\s*$','','')
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let l:max = max([match(pline,'.*[^/]\zs\/[/*]'),0])
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while l:max && s:syn_at(a:ln, strlen(pline)) =~? s:syng_com
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let pline = substitute(strpart(pline, 0, l:max),'\s*$','','')
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let l:max = max([match(pline,'.*[^/]\zs\/[/*]'),0])
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endwhile
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return cursor(a:ln,strlen(pline)) ? pline : 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) =~? s:syng_str
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return l:n
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endif
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let l:n = prevnonblank(l:n-1)
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elseif s:syn_at(l:n,1) =~? s:syng_com
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let l:n = s:save_pos('eval',
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\ 'cursor('.l:n.',1) + search(''\m\/\*'',"bW")')
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else
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return l:n
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endif
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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 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) !~? s: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, '[][(){}]', 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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let kw = 'else do'
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if pline[-1:] == ')' && s:GetPair('(', ')', 'bW', s:skip_expr, 100) > 0
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call s:previous_token()
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let kw = 'for if let while with'
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if index(split('await each'),s:token()) + 1
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call s:previous_token()
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let kw = 'for'
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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:save_pos('s:previous_token') != '.'
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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 s:looking_at() == '{'
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let l:n = line('.')
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let char = s:previous_token()
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let syn = char =~ '[{>/]' ? s:syn_at(line('.'),col('.')-(char == '{')) : ''
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if syn =~? 'xml\|jsx'
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return char != '{'
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elseif char =~ '\k'
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return index(split('return const let import export yield default delete var await void typeof throw case new 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] == '=' || syn =~? '^jsflow'
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elseif char == ':'
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return getline('.')[col('.')-2] != ':' && s:label_col()
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endif
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return syn =~? 'regex' || 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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" 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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let syns = s:syn_at(v:lnum, 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 =~? s:syng_str && l:line !~ '^[''"]'
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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 idx = strlen(l:line) ? stridx('])}',l:line[0]) : -1
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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[1:])
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else
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let [s:looksyn, s:free, top] = [v:lnum - 1, 1, (!indent(l:lnum) &&
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\ s:syn_at(l:lnum,1) !~? s:syng_str) * l:lnum]
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if idx + 1
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call s:GetPair(['\[','(','{'][idx], '])}'[idx],'bW','s:skip_func()',2000,top)
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elseif indent(v:lnum) && syns =~? 'block'
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call s:GetPair('{','}','bW','s:skip_func()',2000,top)
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else
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call s:alternatePair(top)
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endif
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endif
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if idx + 1 || l:line[:1] == '|}'
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if idx == 2 && search('\m\S','bW',line('.')) && s:looking_at() == ')'
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call s:GetPair('(',')','bW',s:skip_expr,200)
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endif
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return indent('.')
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endif
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let b:js_cache = [v:lnum] + (line('.') == v:lnum ? [0,0] : 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 !num || s:IsBlock()
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let pline = s:save_pos('s:Trim',l:lnum)
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if num && s:looking_at() == ')' && s:GetPair('(', ')', 'bW', s:skip_expr, 100) > 0
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let num = line('.')
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if s:previous_token() ==# 'switch' && s:previous_token() != '.'
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if &cino !~ ':' || !has('float')
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let switch_offset = s:W
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else
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let cinc = matchlist(&cino,'.*:\(-\)\=\([0-9.]*\)\(s\)\=\C')
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let switch_offset = float2nr(str2float(cinc[1].(strlen(cinc[2]) ? cinc[2] : strlen(cinc[3])))
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\ * (strlen(cinc[3]) ? s:W : 1))
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endif
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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 pline[-1:] !~ '[{;]'
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if pline =~# ':\@<!:$'
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call cursor(l:lnum,strlen(pline))
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let isOp = s:tern_col(b:js_cache[1:2])
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else
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let isOp = l:line =~# s:opfirst || s:continues(l:lnum,pline)
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endif
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let bL = s:iscontOne(l:lnum,num,isOp)
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let bL -= (bL && l:line[0] == '{') * s:W
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endif
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endif
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" main return
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if isOp
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return (num ? indent(num) : -s:W) + (s:W * 2) + switch_offset + bL
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elseif num
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return indent(num) + s:W + switch_offset + bL
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endif
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return bL
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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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