| " Vim indent file |
| " Language: Javascript |
| " Maintainer: Chris Paul ( https://github.com/bounceme ) |
| " URL: https://github.com/pangloss/vim-javascript |
| " Last Change: December 31, 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('\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 |
| |
| " 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('\m`\|\*\/','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('\m\/','nbW',s:looksyn) || search('\m[''"]\|\\$','nW',s:looksyn)) && eval(s:skip_expr) |
| endfunction |
| |
| function s:alternatePair(stop) |
| let pos = getpos('.')[1:2] |
| while search('\m[][(){}]','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 call('cursor',pos) |
| endfunction |
| |
| function s:save_pos(f,...) |
| let l:pos = getpos('.')[1:2] |
| let ret = call(a:f,a:000) |
| call call('cursor',l:pos) |
| return ret |
| 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 |
| |
| function s:b_token() |
| if s:looking_at() =~ '\k' |
| call search('\m\<','cbW') |
| endif |
| return search('\m\S','bW') |
| endfunction |
| |
| function s:previous_token() |
| let l:n = line('.') |
| while s:b_token() |
| if (s:looking_at() == '/' || line('.') != l:n && search('\m\/\/','nbW', |
| \ line('.'))) && s:syn_at(line('.'),col('.')) =~? s:syng_com |
| call search('\m\_[^/]\zs\/[/*]','bW') |
| else |
| return s:token() |
| endif |
| endwhile |
| return '' |
| endfunction |
| |
| function s:others(p) |
| return "((line2byte(line('.')) + col('.')) <= ".(line2byte(a:p[0]) + a:p[1]).") || ".s:skip_expr |
| endfunction |
| |
| function s:tern_skip(p) |
| return s:GetPair('{','}','nbW',s:others(a:p),200,a:p[0]) > 0 |
| endfunction |
| |
| function s:tern_col(p) |
| return s:GetPair('?',':\@<!::\@!','nbW',s:others(a:p) |
| \ .' || s:tern_skip('.string(a:p).')',200,a:p[0]) > 0 |
| endfunction |
| |
| function s:label_col() |
| let pos = getpos('.')[1:2] |
| let [s:looksyn,s:free] = pos |
| call s:alternatePair(0) |
| if s:save_pos('s:IsBlock') |
| let poss = getpos('.')[1:2] |
| return call('cursor',pos) || !s:tern_col(poss) |
| elseif s:looking_at() == ':' |
| return !s:tern_col([0,0]) |
| endif |
| 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\)\)') . '$' |
| |
| function s:continues(ln,con) |
| return !cursor(a:ln, match(' '.a:con,s:continuation)) && |
| \ eval((['s:syn_at(line("."),col(".")) !~? "regex"'] + |
| \ repeat(['s:previous_token() != "."'],5) + [1])[ |
| \ index(split('/ typeof in instanceof void delete'),s:token())]) |
| endfunction |
| |
| " get the line of code stripped of comments and move cursor to the last |
| " non-comment char. |
| function s:Trim(ln) |
| let pline = substitute(getline(a:ln),'\s*$','','') |
| 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 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 l:n |
| if getline(l:n) =~ '^\s*\/[/*]' |
| if (stridx(getline(l:n),'`') > 0 || getline(l:n-1)[-1:] == '\') && |
| \ s:syn_at(l:n,1) =~? s:syng_str |
| return l:n |
| endif |
| let l:n = prevnonblank(l:n-1) |
| elseif s:syn_at(l:n,1) =~? s:syng_com |
| let l:n = s:save_pos('eval', |
| \ 'cursor('.l:n.',1) + search(''\m\/\*'',"bW")') |
| else |
| return l:n |
| endif |
| endwhile |
| 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) |
| let kw = 'else do' |
| if pline[-1:] == ')' && s:GetPair('(', ')', 'bW', s:skip_expr, 100) > 0 |
| call s:previous_token() |
| let kw = 'for if let while with' |
| if index(split('await each'),s:token()) + 1 |
| call s:previous_token() |
| let kw = 'for' |
| endif |
| endif |
| return pline[-2:] == '=>' || index(split(kw),s:token()) + 1 && |
| \ s:save_pos('s:previous_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() |
| if s:looking_at() == '{' |
| let l:n = 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 await void typeof throw case new in instanceof') |
| \ ,char) < (line('.') != l:n) || s:previous_token() == '.' |
| elseif char == '>' |
| return getline('.')[col('.')-2] == '=' || syn =~? '^jsflow' |
| elseif char == ':' |
| return getline('.')[col('.')-2] != ':' && s:label_col() |
| endif |
| return syn =~? 'regex' || char !~ '[-=~!<*+,/?^%|&([]' |
| endif |
| endfunction |
| |
| function GetJavascriptIndent() |
| let b:js_cache = get(b:,'js_cache',[0,0,0]) |
| " Get the current line. |
| call cursor(v:lnum,1) |
| let l:line = getline('.') |
| 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 |
| 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 || l:line[:1] == '|}' |
| if idx == 2 && search('\m\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:IsBlock() |
| let pline = s:save_pos('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' && s:previous_token() != '.' |
| 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 =~# '^\%(default\|case\)\>' |
| return indent(num) + switch_offset |
| endif |
| endif |
| endif |
| if pline[-1:] !~ '[{;]' |
| if pline =~# ':\@<!:$' |
| call cursor(l:lnum,strlen(pline)) |
| let isOp = s:tern_col(b:js_cache[1:2]) |
| else |
| let isOp = l:line =~# s:opfirst || s:continues(l:lnum,pline) |
| endif |
| 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 |