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Diffstat (limited to '')
| -rw-r--r-- | runtime/indent/javascript.vim | 486 |
1 files changed, 486 insertions, 0 deletions
diff --git a/runtime/indent/javascript.vim b/runtime/indent/javascript.vim new file mode 100644 index 0000000..8077442 --- /dev/null +++ b/runtime/indent/javascript.vim @@ -0,0 +1,486 @@ +" Vim indent file +" Language: Javascript +" Maintainer: Chris Paul ( https://github.com/bounceme ) +" URL: https://github.com/pangloss/vim-javascript +" Last Change: December 4, 2017 + +" 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) +" 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<' + +" Only define the function once. +if exists('*GetJavascriptIndent') + finish +endif + +let s:cpo_save = &cpo +set cpo&vim + +" indent correctly if inside <script> +" vim/vim@690afe1 for the switch from cindent +" overridden with b:html_indent_script1 +call extend(g:,{'html_indent_script1': 'inc'},'keep') + +" Regex of syntax group names that are or delimit string or are comments. +let s:bvars = { + \ 'syng_strcom': 'string\|comment\|regex\|special\|doc\|template\%(braces\)\@!', + \ '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' + +function s:GetVars() + call extend(b:,extend(s:bvars,{'js_cache': [0,0,0]}),'keep') +endfunction + +" 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' : '' + +" Expression used to check whether we should skip a match with searchpair(). +let s:skip_expr = "s:SynAt(line('.'),col('.')) =~? b:syng_strcom" +let s:in_comm = s:skip_expr[:-14] . "'comment\\|doc'" + +let s:rel = has('reltime') +" searchpair() wrapper +if s:rel + function s:GetPair(start,end,flags,skip) + return searchpair('\m'.a:start,'','\m'.a:end,a:flags,a:skip,s:l1,a:skip ==# 's:SkipFunc()' ? 2000 : 200) + endfunction +else + function s:GetPair(start,end,flags,skip) + return searchpair('\m'.a:start,'','\m'.a:end,a:flags,a:skip,s:l1) + endfunction +endif + +function s:SynAt(l,c) + let byte = line2byte(a:l) + a:c - 1 + let pos = index(s:synid_cache[0], byte) + if pos == -1 + let s:synid_cache[:] += [[byte], [synIDattr(synID(a:l, a:c, 0), 'name')]] + endif + return s:synid_cache[1][pos] +endfunction + +function s:ParseCino(f) + let [divider, n, cstr] = [0] + matchlist(&cino, + \ '\%(.*,\)\=\%(\%d'.char2nr(a:f).'\(-\)\=\([.s0-9]*\)\)\=')[1:2] + for c in split(cstr,'\zs') + if c == '.' && !divider + let divider = 1 + elseif c ==# 's' + if n !~ '\d' + return n . s:sw() + 0 + endif + let n = str2nr(n) * s:sw() + break + else + let [n, divider] .= [c, 0] + endif + endfor + return str2nr(n) / max([str2nr(divider),1]) +endfunction + +" Optimized {skip} expr, only callable from the search loop which +" GetJavascriptIndent does to find the containing [[{(] (side-effects) +function s:SkipFunc() + if s:top_col == 1 + throw 'out of bounds' + elseif s:check_in + if eval(s:skip_expr) + return 1 + endif + let s:check_in = 0 + elseif getline('.') =~ '\%<'.col('.').'c\/.\{-}\/\|\%>'.col('.').'c[''"]\|\\$' + if eval(s:skip_expr) + return 1 + endif + elseif search('\m`\|\${\|\*\/','nW'.s:z,s:looksyn) + if eval(s:skip_expr) + let s:check_in = 1 + return 1 + endif + else + let s:synid_cache[:] += [[line2byte('.') + col('.') - 1], ['']] + endif + let [s:looksyn, s:top_col] = getpos('.')[1:2] +endfunction + +function s:AlternatePair() + let [pat, l:for] = ['[][(){};]', 2] + while s:SearchLoop(pat,'bW','s:SkipFunc()') + if s:LookingAt() == ';' + if !l:for + if s:GetPair('{','}','bW','s:SkipFunc()') + return + endif + break + else + let [pat, l:for] = ['[{}();]', l:for - 1] + endif + else + let idx = stridx('])}',s:LookingAt()) + if idx == -1 + return + elseif !s:GetPair(['\[','(','{'][idx],'])}'[idx],'bW','s:SkipFunc()') + break + endif + endif + endwhile + throw 'out of bounds' +endfunction + +function s:Nat(int) + return a:int * (a:int > 0) +endfunction + +function s:LookingAt() + return getline('.')[col('.')-1] +endfunction + +function s:Token() + return s:LookingAt() =~ '\k' ? expand('<cword>') : s:LookingAt() +endfunction + +function s:PreviousToken(...) + let [l:pos, tok] = [getpos('.'), ''] + if search('\m\k\{1,}\|\S','ebW') + if getline('.')[col('.')-2:col('.')-1] == '*/' + if eval(s:in_comm) && !s:SearchLoop('\S\ze\_s*\/[/*]','bW',s:in_comm) + call setpos('.',l:pos) + else + let tok = s:Token() + endif + else + let two = a:0 || line('.') != l:pos[1] ? strridx(getline('.')[:col('.')],'//') + 1 : 0 + if two && eval(s:in_comm) + call cursor(0,two) + let tok = s:PreviousToken(1) + if tok is '' + call setpos('.',l:pos) + endif + else + let tok = s:Token() + endif + endif + endif + return tok +endfunction + +function s:Pure(f,...) + return eval("[call(a:f,a:000),cursor(a:firstline,".col('.').")][0]") +endfunction + +function s:SearchLoop(pat,flags,expr) + return s:GetPair(a:pat,'\_$.',a:flags,a:expr) +endfunction + +function s:ExprCol() + if getline('.')[col('.')-2] == ':' + return 1 + endif + let bal = 0 + while s:SearchLoop('[{}?:]','bW',s:skip_expr) + if s:LookingAt() == ':' + if getline('.')[col('.')-2] == ':' + call cursor(0,col('.')-1) + continue + endif + let bal -= 1 + elseif s:LookingAt() == '?' + if getline('.')[col('.'):col('.')+1] =~ '^\.\d\@!' + continue + elseif !bal + return 1 + endif + let bal += 1 + elseif s:LookingAt() == '{' + return !s:IsBlock() + elseif !s:GetPair('{','}','bW',s:skip_expr) + break + endif + endwhile +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\)\)') . '$' + +function s:Continues() + let tok = matchstr(strpart(getline('.'),col('.')-15,15),s:continuation) + if tok =~ '[a-z:]' + return tok == ':' ? s:ExprCol() : s:PreviousToken() != '.' + elseif tok !~ '[/>]' + return tok isnot '' + endif + return s:SynAt(line('.'),col('.')) !~? (tok == '>' ? 'jsflow\|^html' : 'regex') +endfunction + +" Check if line 'lnum' has a balanced amount of parentheses. +function s:Balanced(lnum,line) + let l:open = 0 + let pos = match(a:line, '[][(){}]') + while pos != -1 + if s:SynAt(a:lnum,pos + 1) !~? b:syng_strcom + let l:open += match(' ' . a:line[pos],'[[({]') + if l:open < 0 + return + endif + endif + let pos = match(a:line, !l:open ? '[][(){}]' : '()' =~ a:line[pos] ? + \ '[()]' : '{}' =~ a:line[pos] ? '[{}]' : '[][]', pos + 1) + endwhile + return !l:open +endfunction + +function s:OneScope() + if s:LookingAt() == ')' && s:GetPair('(', ')', 'bW', s:skip_expr) + let tok = s:PreviousToken() + return (count(split('for if let while with'),tok) || + \ tok =~# '^await$\|^each$' && s:PreviousToken() ==# 'for') && + \ s:Pure('s:PreviousToken') != '.' && !(tok == 'while' && s:DoWhile()) + elseif s:Token() =~# '^else$\|^do$' + return s:Pure('s:PreviousToken') != '.' + elseif strpart(getline('.'),col('.')-2,2) == '=>' + call cursor(0,col('.')-1) + if s:PreviousToken() == ')' + return s:GetPair('(', ')', 'bW', s:skip_expr) + endif + return 1 + endif +endfunction + +function s:DoWhile() + let cpos = searchpos('\m\<','cbW') + while s:SearchLoop('\C[{}]\|\<\%(do\|while\)\>','bW',s:skip_expr) + if s:LookingAt() =~ '\a' + if s:Pure('s:IsBlock') + if s:LookingAt() ==# 'd' + return 1 + endif + break + endif + elseif s:LookingAt() != '}' || !s:GetPair('{','}','bW',s:skip_expr) + break + endif + endwhile + call call('cursor',cpos) +endfunction + +" returns total offset from braceless contexts. 'num' is the lineNr which +" encloses the entire context, 'cont' if whether a:firstline is a continued +" expression, which could have started in a braceless context +function s:IsContOne(cont) + let [l:num, b_l] = [b:js_cache[1] + !b:js_cache[1], 0] + let pind = b:js_cache[1] ? indent(b:js_cache[1]) + s:sw() : 0 + let ind = indent('.') + !a:cont + while line('.') > l:num && ind > pind || line('.') == l:num + if indent('.') < ind && s:OneScope() + let b_l += 1 + elseif !a:cont || b_l || ind < indent(a:firstline) + break + else + call cursor(0,1) + endif + let ind = min([ind, indent('.')]) + if s:PreviousToken() is '' + break + endif + endwhile + return b_l +endfunction + +function s:IsSwitch() + call call('cursor',b:js_cache[1:]) + return search('\m\C\%#.\_s*\%(\%(\/\/.*\_$\|\/\*\_.\{-}\*\/\)\@>\_s*\)*\%(case\|default\)\>','nWc'.s:z) +endfunction + +" https://github.com/sweet-js/sweet.js/wiki/design#give-lookbehind-to-the-reader +function s:IsBlock() + let tok = s:PreviousToken() + if join(s:stack) =~? 'xml\|jsx' && s:SynAt(line('.'),col('.')-1) =~? 'xml\|jsx' + let s:in_jsx = 1 + return tok != '{' + elseif tok =~ '\k' + if tok ==# 'type' + return s:Pure('eval',"s:PreviousToken() !~# '^\\%(im\\|ex\\)port$' || s:PreviousToken() == '.'") + elseif tok ==# 'of' + return s:Pure('eval',"!s:GetPair('[[({]','[])}]','bW',s:skip_expr) || s:LookingAt() != '(' ||" + \ ."s:{s:PreviousToken() ==# 'await' ? 'Previous' : ''}Token() !=# 'for' || s:PreviousToken() == '.'") + endif + return index(split('return const let import export extends yield default delete var await void typeof throw case new in instanceof') + \ ,tok) < (line('.') != a:firstline) || s:Pure('s:PreviousToken') == '.' + elseif tok == '>' + return getline('.')[col('.')-2] == '=' || s:SynAt(line('.'),col('.')) =~? 'jsflow\|^html' + elseif tok == '*' + return s:Pure('s:PreviousToken') == ':' + elseif tok == ':' + return s:Pure('eval',"s:PreviousToken() =~ '^\\K\\k*$' && !s:ExprCol()") + 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 cindent(v:lnum) + elseif l:line !~ '^\s*\/[/*]' + return -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 s:l1 = max([0,prevnonblank(v:lnum) - (s:rel ? 2000 : 1000), + \ get(get(b:,'hi_indent',{}),'blocklnr')]) + call cursor(v:lnum,1) + if s:PreviousToken() is '' + return + endif + let [l:lnum, pline] = [line('.'), getline('.')[:col('.')-1]] + + let l:line = substitute(l:line,'^\s*','','') + let l:line_raw = l:line + 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$' + call s:GetPair('{','}','bW','s:SkipFunc()') + else + call s:AlternatePair() + endif + catch /^\Cout of bounds$/ + 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, len(pline)) + 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, len(pline)) + let b_l = s:Nat(s:IsContOne(is_op) - (!is_op && l:line =~ '^{')) * s:sw() + endif + elseif idx.s:LookingAt().&cino =~ '^-1(.*(' && (search('\m\S','nbW',num) || s:ParseCino('U')) + let pval = s:ParseCino('(') + if !pval + let [Wval, vcol] = [s:ParseCino('W'), virtcol('.')] + if search('\m\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_raw[0] == ')' + 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) + endif + + let nest = get(get(b:, 'hi_indent', {}), 'blocklnr') + if 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 |