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: December 14, 2016
" Only load this indent file when no other was loaded.
if exists('b:did_indent')
finish
endif
let b:did_indent = 1
" Now, set up our indentation expression and keys that trigger it.
setlocal indentexpr=GetJavascriptIndent()
setlocal autoindent nolisp nosmartindent
setlocal indentkeys+=0],0)
let b:undo_indent = 'setlocal indentexpr< smartindent< autoindent< indentkeys<'
" 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 &sw
endfunction
endif
" searchpair() wrapper
if has('reltime')
function s:GetPair(start,end,flags,skip,time,...)
return searchpair(a:start,'',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(a:start,'',a:end,a:flags,a:skip,max([prevnonblank(v:lnum) - 1000,get(a:000,1)]))
endfunction
endif
" Regex of syntax group names that are or delimit string or are comments.
let s:syng_strcom = 'string\|comment\|regex\|special\|doc\|template'
let s:syng_str = 'string\|template'
let s:syng_com = 'comment\|doc'
" Expression used to check whether we should skip a match with searchpair().
let s:skip_expr = "synIDattr(synID(line('.'),col('.'),0),'name') =~? '".s:syng_strcom."'"
function s:skip_func()
if !s:free || search('`\|\*\/','nW',s:looksyn)
let s:free = !eval(s:skip_expr)
let s:looksyn = s:free ? line('.') : s:looksyn
return !s:free
endif
let s:looksyn = line('.')
return (search('\/','nbW',s:looksyn) || search('[''"\\]','nW',s:looksyn)) && eval(s:skip_expr)
endfunction
function s:alternatePair(stop)
while search('[][(){}]','bW',a:stop)
if !s:skip_func()
let idx = stridx('])}',s:looking_at())
if idx + 1
if !s:GetPair(['\[','(','{'][idx], '])}'[idx],'bW','s:skip_func()',2000,a:stop)
break
endif
else
return
endif
endif
endwhile
call cursor(v:lnum,1)
endfunction
function s:syn_at(l,c)
return synIDattr(synID(a:l,a:c,0),'name')
endfunction
function s:looking_at()
return getline('.')[col('.')-1]
endfunction
function s:token()
return s:looking_at() =~ '\k' ? expand('<cword>') : s:looking_at()
endfunction
" NOTE: Moves the cursor, unless a arg is supplied.
function s:previous_token(...)
let l:pos = getpos('.')[1:2]
return [search('.\>\|[^[:alnum:][:space:]_$]','bW') ?
\ (s:looking_at() == '/' || line('.') != l:pos[0] && getline('.') =~ '\/\/') &&
\ s:syn_at(line('.'),col('.')) =~? s:syng_com ?
\ search('\_[^/]\zs\/[/*]','bW') ? s:previous_token() : ''
\ : s:token()
\ : ''][a:0 && call('cursor',l:pos)]
endfunction
" switch case label pattern
let s:case_stmt = '\<\%(case\>\s*[^ \t:].*\|default\s*\):\C'
function s:label_end(ln,con)
return !cursor(a:ln,match(' '.a:con, '.*\zs' . s:case_stmt . '$')) &&
\ (expand('<cword>') !=# 'default' || s:previous_token(1) !~ '[{,.]')
endfunction
" configurable regexes that define continuation lines, not including (, {, or [.
let s:opfirst = '^' . get(g:,'javascript_opfirst',
\ '\%([<>=,?^%|*/&]\|\([-.:+]\)\1\@!\|!=\|in\%(stanceof\)\=\>\)')
let s:continuation = get(g:,'javascript_continuation',
\ '\%([<=,.~!?/*^%|&:]\|+\@<!+\|-\@<!-\|=\@<!>\|\<\%(typeof\|delete\|void\|in\|instanceof\)\)') . '$'
function s:continues(ln,con)
return !cursor(a:ln, match(' '.a:con,s:continuation)) &&
\ eval((['s:syn_at(line("."),col(".")) !~? "regex"'] +
\ repeat(['s:previous_token() != "."'],5) + [1])[
\ index(split('/ typeof in instanceof void delete'),s:token())])
endfunction
" get the line of code stripped of comments. if called with two args, leave
" cursor at the last non-comment char.
function s:Trim(ln,...)
let pline = substitute(getline(a:ln),'\s*$','','')
let l:max = max([match(pline,'.*[^/]\zs\/[/*]'),0])
while l:max && s:syn_at(a:ln, strlen(pline)) =~? s:syng_com
let pline = substitute(strpart(pline, 0, l:max),'\s*$','','')
let l:max = max([match(pline,'.*[^/]\zs\/[/*]'),0])
endwhile
return !a:0 || cursor(a:ln,strlen(pline)) ? pline : 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 getline(l:n) =~ '^\s*\/[/*]' || s:syn_at(l:n,1) =~? s:syng_com
let l:n = prevnonblank(l:n-1)
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) !~? s:syng_strcom
let l:open += match(' ' . l:line[pos],'[[({]')
if l:open < 0
return
endif
endif
let pos = match(l:line, '[][(){}]', pos + 1)
endwhile
return !l:open
endfunction
function s:OneScope(lnum)
let pline = s:Trim(a:lnum,1)
if pline[-1:] == ')' && s:GetPair('(', ')', 'bW', s:skip_expr, 100) > 0
let token = s:previous_token()
if index(split('await each'),token) + 1
return s:previous_token() ==# 'for'
endif
return index(split('for if let while with'),token) + 1
endif
return eval((['getline(".")[col(".")-2] == "="'] +
\ repeat(['s:previous_token(1) != "."'],2) + [0])[
\ index(split('> else do'),s:token())])
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()
let l:ln = line('.')
let char = s:previous_token()
let syn = char =~ '[{>/]' ? s:syn_at(line('.'),col('.')-(char == '{')) : ''
if syn =~? 'xml\|jsx'
return char != '{'
elseif char =~ '\k'
return index(split('return const let import export yield default delete var void typeof throw new in instanceof')
\ ,char) < (0 + (line('.') != l:ln)) || s:previous_token() == '.'
elseif char == '>'
return getline('.')[col('.')-2] == '=' || syn =~? '^jsflow'
elseif char == ':'
return s:label_end(0,strpart(getline('.'),0,col('.')))
endif
return syn =~? 'regex' || char !~ '[-=~!<*+,/?^%|&([]'
endfunction
function GetJavascriptIndent()
let b:js_cache = get(b:,'js_cache',[0,0,0])
" Get the current line.
let l:line = getline(v:lnum)
let syns = s:syn_at(v:lnum, 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 =~? s:syng_str && l:line !~ '^[''"]'
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
call cursor(v:lnum,1)
let idx = strlen(l:line) ? stridx('])}',l:line[0]) : -1
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[1:])
else
let [s:looksyn, s:free, top] = [v:lnum - 1, 1, (!indent(l:lnum) &&
\ s:syn_at(l:lnum,1) !~? s:syng_str) * l:lnum]
if idx + 1
call s:GetPair(['\[','(','{'][idx], '])}'[idx],'bW','s:skip_func()',2000,top)
elseif indent(v:lnum) && syns =~? 'block'
call s:GetPair('{','}','bW','s:skip_func()',2000,top)
else
call s:alternatePair(top)
endif
endif
if idx + 1
if idx == 2 && search('\S','bW',line('.')) && s:looking_at() == ')'
call s:GetPair('(',')','bW',s:skip_expr,200)
endif
return indent('.')
endif
let b:js_cache = [v:lnum] + (line('.') == v:lnum ? [0,0] : getpos('.')[1:2])
let num = b:js_cache[1]
let [s:W, isOp, bL, switch_offset] = [s:sw(),0,0,0]
if !num || s:looking_at() == '{' && s:IsBlock()
let pline = s:Trim(l:lnum)
if num && s:looking_at() == ')' && s:GetPair('(', ')', 'bW', s:skip_expr, 100) > 0
let num = line('.')
if s:previous_token() ==# 'switch'
if &cino !~ ':' || !has('float')
let switch_offset = s:W
else
let cinc = matchlist(&cino,'.*:\(-\)\=\([0-9.]*\)\(s\)\=\C')
let switch_offset = float2nr(str2float(cinc[1].(strlen(cinc[2]) ? cinc[2] : strlen(cinc[3])))
\ * (strlen(cinc[3]) ? s:W : 1))
endif
if pline[-1:] != '.' && l:line =~# '^' . s:case_stmt
return indent(num) + switch_offset
elseif s:label_end(l:lnum,pline)
return indent(l:lnum) + s:W
endif
endif
endif
if pline[-1:] !~ '[{;]'
let isOp = l:line =~# s:opfirst || s:continues(l:lnum,pline)
let bL = s:iscontOne(l:lnum,num,isOp)
let bL -= (bL && l:line[0] == '{') * s:W
endif
endif
" main return
if isOp
return (num ? indent(num) : -s:W) + (s:W * 2) + switch_offset + bL
elseif num
return indent(num) + s:W + switch_offset + bL
endif
return bL
endfunction
let &cpo = s:cpo_save
unlet s:cpo_save
endif
