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