diff options
Diffstat (limited to 'runtime/indent/javascript.vim')
| -rw-r--r-- | runtime/indent/javascript.vim | 483 |
1 files changed, 370 insertions, 113 deletions
diff --git a/runtime/indent/javascript.vim b/runtime/indent/javascript.vim index 3507e305ed..2861716287 100644 --- a/runtime/indent/javascript.vim +++ b/runtime/indent/javascript.vim @@ -1,8 +1,8 @@ " Vim indent file " Language: Javascript -" Maintainer: vim-javascript community +" Maintainer: Chris Paul ( https://github.com/bounceme ) " URL: https://github.com/pangloss/vim-javascript -" Last Change: August 12, 2016 +" Last Change: September 18, 2017 " Only load this indent file when no other was loaded. if exists('b:did_indent') @@ -10,13 +10,27 @@ if exists('b:did_indent') 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 nolisp -setlocal indentkeys=0{,0},0),0],:,!^F,o,O,e -setlocal cinoptions+=j1,J1 +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<' -let b:undo_indent = 'setlocal indentexpr< indentkeys< cinoptions<' +" 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') @@ -33,160 +47,403 @@ if exists('*shiftwidth') endfunction else function s:sw() - return &sw + return &l:shiftwidth ? &l:shiftwidth : &l:tabstop endfunction endif -let s:line_pre = '^\s*\%(\/\*.\{-}\*\/\s*\)*' -let s:expr_case = s:line_pre . '\%(\%(case\>.\+\)\|default\)\s*:' -" Regex of syntax group names that are or delimit string or are comments. -let s:syng_strcom = '\%(s\%(tring\|pecial\)\|comment\|regex\|doc\|template\)' - -" Regex of syntax group names that are strings or documentation. -let s:syng_comment = '\%(comment\|doc\)' +" 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 = "line('.') < (prevnonblank(v:lnum) - 2000) ? dummy : synIDattr(synID(line('.'),col('.'),0),'name') =~? '".s:syng_strcom."'" +let s:skip_expr = "s:SynAt(line('.'),col('.')) =~? b:syng_strcom" +let s:in_comm = s:skip_expr[:-14] . "'comment\\|doc'" -function s:lookForParens(start,end,flags,time) - if has('reltime') - return searchpair(a:start,'',a:end,a:flags,s:skip_expr,0,a:time) - else - return searchpair(a:start,'',a:end,a:flags,0,0) +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 -let s:line_term = '\%(\s*\%(\/\*.\{-}\*\/\s*\)\=\)\@>$' +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 -" configurable regexes that define continuation lines, not including (, {, or [. -if !exists('g:javascript_opfirst') - let g:javascript_opfirst = '\%([<>,:?^%]\|\([-/.+]\)\%(\1\|\*\|\/\)\@!\|\*\/\@!\|=>\@!\||\|&\|in\%(stanceof\)\=\>\)' -endif -let g:javascript_opfirst = s:line_pre . g:javascript_opfirst +" 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' + endif + let s:top_col = 0 + if 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) + let s:looksyn = a:firstline + return 1 + endif + elseif search('\m`\|\${\|\*\/','nW'.s:z,s:looksyn) && eval(s:skip_expr) + let s:check_in = 1 + return 1 + endif + let [s:looksyn, s:top_col] = getpos('.')[1:2] +endfunction -if !exists('g:javascript_continuation') - let g:javascript_continuation = '\%([<*,.?:^%]\|+\@<!+\|-\@<!-\|=\@<!>\|\*\@<!\/\|=\||\|&\|\<in\%(stanceof\)\=\)' -endif -let g:javascript_continuation .= s:line_term +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:Onescope(lnum,text,add) - return a:text =~# '\%(\<else\|\<do\|=>' . (a:add ? '\|\<try\|\<finally' : '' ) . '\)' . s:line_term || - \ ((a:add && a:text =~ s:line_pre . '$' && search('\%' . s:PrevCodeLine(a:lnum - 1) . 'l.)' . s:line_term)) || - \ cursor(a:lnum, match(a:text, ')' . s:line_term)) > -1) && - \ s:lookForParens('(', ')', 'cbW', 100) > 0 && search((a:add ? - \ '\%(function\*\|[[:lower:][:upper:]_$][[:digit:][:lower:][:upper:]_$]*\)' : - \ '\<\%(for\%(\s\+each\)\=\|if\|let\|w\%(hile\|ith\)\)') . '\_s*\%#\C','bW') && - \ (a:add || (expand('<cword>') ==# 'while' ? !s:lookForParens('\<do\>\C', '\<while\>\C','bW',100) : 1)) +function s:Nat(int) + return a:int * (a:int > 0) endfunction -" Auxiliary Functions {{{2 +function s:LookingAt() + return getline('.')[col('.')-1] +endfunction + +function s:Token() + return s:LookingAt() =~ '\k' ? expand('<cword>') : s:LookingAt() +endfunction -" strip line of comment -function s:StripLine(c) - return a:c !~# s:expr_case ? substitute(a:c, '\%(:\@<!\/\/.*\)$', '','') : a:c +function s:PreviousToken() + let l:col = col('.') + if search('\m\k\{1,}\|\S','ebW') + if search('\m\*\%#\/\|\/\/\%<'.a:firstline.'l','nbW',line('.')) && eval(s:in_comm) + if s:SearchLoop('\S\ze\_s*\/[/*]','bW',s:in_comm) + return s:Token() + endif + call cursor(a:firstline, l:col) + else + return s:Token() + endif + endif + return '' endfunction -" Find line above 'lnum' that isn't empty, in a comment, or in a string. -function s:PrevCodeLine(lnum) - let l:lnum = prevnonblank(a:lnum) - while l:lnum > 0 - if synIDattr(synID(l:lnum,matchend(getline(l:lnum), '^\s*[^''"]'),0),'name') !~? s:syng_strcom +function s:Pure(f,...) + return eval("[call(a:f,a:000),cursor(a:firstline,".col('.').")][0]") +endfunction + +function s:SearchLoop(pat,flags,expr) + return s:GetPair(a:pat,'\_$.',a:flags,a:expr) +endfunction + +function s:ExprCol() + let bal = 0 + while s:SearchLoop('[{}?]\|\_[^:]\zs::\@!','bW',s:skip_expr) + if s:LookingAt() == ':' + let bal -= 1 + elseif s:LookingAt() == '?' + let bal += 1 + if bal == 1 + break + endif + elseif s:LookingAt() == '{' + let bal = !s:IsBlock() + break + elseif !s:GetPair('{','}','bW',s:skip_expr) break endif - let l:lnum = prevnonblank(l:lnum - 1) endwhile - return l:lnum + return s:Nat(bal) +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\)\)') . '$' + +function s:Continues(ln,con) + let tok = matchstr(a:con[-15:],s:continuation) + if tok =~ '[a-z:]' + call cursor(a:ln, len(a:con)) + return tok == ':' ? s:ExprCol() : s:PreviousToken() != '.' + elseif tok !~ '[/>]' + return tok isnot '' + endif + return s:SynAt(a:ln, len(a:con)) !~? (tok == '>' ? 'jsflow\|^html' : 'regex') endfunction " Check if line 'lnum' has a balanced amount of parentheses. function s:Balanced(lnum) - let open_0 = 0 - let open_2 = 0 - let open_4 = 0 - let l:line = getline(a:lnum) - let pos = match(l:line, '[][(){}]', 0) + let [l:open, l:line] = [0, getline(a:lnum)] + let pos = match(l:line, '[][(){}]') while pos != -1 - if synIDattr(synID(a:lnum,pos + 1,0),'name') !~? s:syng_strcom - let idx = stridx('(){}[]', l:line[pos]) - if idx % 2 == 0 - let open_{idx} = open_{idx} + 1 - else - let open_{idx - 1} = open_{idx - 1} - 1 + if s:SynAt(a:lnum,pos + 1) !~? b:syng_strcom + let l:open += match(' ' . l:line[pos],'[[({]') + if l:open < 0 + return endif endif - let pos = match(l:line, '[][(){}]', pos + 1) + let pos = match(l:line, !l:open ? '[][(){}]' : '()' =~ l:line[pos] ? + \ '[()]' : '{}' =~ l:line[pos] ? '[{}]' : '[][]', pos + 1) endwhile - return (!open_4 + !open_2 + !open_0) - 2 + return !l:open endfunction -" }}} -function GetJavascriptIndent() - if !exists('b:js_cache') - let b:js_cache = [0,0,0] +function s:OneScope() + if s:LookingAt() == ')' && s:GetPair('(', ')', 'bW', s:skip_expr) + let tok = s:PreviousToken() + return (count(split('for if let while with'),tok) || + \ tok =~# '^await$\|^each$' && s:PreviousToken() ==# 'for') && + \ s:Pure('s:PreviousToken') != '.' && !(tok == 'while' && s:DoWhile()) + elseif s:Token() =~# '^else$\|^do$' + return s:Pure('s:PreviousToken') != '.' + endif + return strpart(getline('.'),col('.')-2,2) == '=>' +endfunction + +function s:DoWhile() + let cpos = searchpos('\m\<','cbW') + if s:SearchLoop('\C[{}]\|\<\%(do\|while\)\>','bW',s:skip_expr) + if s:{s:LookingAt() == '}' && s:GetPair('{','}','bW',s:skip_expr) ? + \ 'Previous' : ''}Token() ==# 'do' && s:IsBlock() + return 1 + endif + call call('cursor',cpos) endif - " Get the current line. +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(num,cont) + let [l:num, b_l] = [a:num + !a:num, 0] + let pind = a:num ? indent(a:num) + 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:Class() + return (s:Token() ==# 'class' || s:PreviousToken() =~# '^class$\|^extends$') && + \ s:PreviousToken() != '.' +endfunction + +function s:IsSwitch() + return s:PreviousToken() !~ '[.*]' && + \ (!s:GetPair('{','}','cbW',s:skip_expr) || s:IsBlock() && !s:Class()) +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' + 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() + let b:js_cache = get(b:,'js_cache',[0,0,0]) + let s:synid_cache = [[],[]] let l:line = getline(v:lnum) - let syns = synIDattr(synID(v:lnum, 1, 0), 'name') + " 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.{{{2 - if (l:line !~ '^[''"`]' && syns =~? 'string\|template') || - \ (l:line !~ '^\s*[/*]' && syns =~? s:syng_comment) + " 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) + let b:js_cache[0] = v:lnum + endif return -1 endif - if l:line !~ '^\%(\/\*\|\s*\/\/\)' && syns =~? s:syng_comment - return cindent(v:lnum) - endif - let l:lnum = s:PrevCodeLine(v:lnum - 1) - if l:lnum == 0 - return 0 + + 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]] - if (l:line =~# s:expr_case) - let cpo_switch = &cpo - set cpo+=% - let ind = cindent(v:lnum) - let &cpo = cpo_switch - return ind + 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, curly. Memoize, last lineNr either has the - " same scope or starts a new one, unless if it closed a scope. + " the containing paren, bracket, or curly. Many hacks for performance call cursor(v:lnum,1) - if b:js_cache[0] >= l:lnum && b:js_cache[0] <= v:lnum && b:js_cache[0] && - \ (b:js_cache[0] > l:lnum || s:Balanced(l:lnum) > 0) - let num = b:js_cache[1] - elseif syns != '' && l:line[0] =~ '\s' - let pattern = syns =~? 'block' ? ['{','}'] : syns =~? 'jsparen' ? ['(',')'] : - \ syns =~? 'jsbracket'? ['\[','\]'] : ['[({[]','[])}]'] - let num = s:lookForParens(pattern[0],pattern[1],'bW',2000) + 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) + call call('cursor',b:js_cache[1:]) else - let num = s:lookForParens('[({[]','[])}]','bW',2000) + 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 = [v:lnum,num,line('.') == v:lnum ? b:js_cache[2] : col('.')] - if l:line =~ s:line_pre . '[])}]' - return indent(num) - endif + let [b:js_cache[0], num] = [v:lnum, b:js_cache[1]] - let pline = s:StripLine(getline(l:lnum)) - let inb = num == 0 ? 1 : (s:Onescope(num, s:StripLine(strpart(getline(num),0,b:js_cache[2] - 1)),1) || - \ (l:line !~ s:line_pre . ',' && pline !~ ',' . s:line_term)) && num < l:lnum - let switch_offset = (!inb || num == 0) || expand("<cword>") !=# 'switch' ? 0 : &cino !~ ':' || !has('float') ? s:sw() : - \ float2nr(str2float(matchstr(&cino,'.*:\zs[-0-9.]*')) * (&cino =~# '.*:[^,]*s' ? s:sw() : 1)) - - " most significant, find the indent amount - if (inb && (l:line =~# g:javascript_opfirst || - \ (pline =~# g:javascript_continuation && pline !~# s:expr_case && (pline !~ ':' . s:line_term || l:line !~# - \ s:line_pre . '\%(d\%(o\|ebugger\)\|else\|f\%(or\|inally\)\|if\|let\|switch\|t\%(hrow\|ry\)\|w\%(hile\|ith\)\)\>')))) || - \ (num < l:lnum && s:Onescope(l:lnum,pline,0) && l:line !~ s:line_pre . '{') - return (num > 0 ? indent(num) : -s:sw()) + (s:sw() * 2) + switch_offset - elseif num > 0 - return indent(num) + s:sw() + switch_offset + let [num_ind, is_op, b_l, l:switch_offset] = [s:Nat(indent(num)),0,0,0] + if !num || s:LookingAt() == '{' && s:IsBlock() + let ilnum = line('.') + if num && 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:] !~ '[{;]' + 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(l:lnum,pline) + let is_op = s:sw() + endif + elseif num && sol =~# '^\%(in\%(stanceof\)\=\|\*\)$' + call call('cursor',b:js_cache[1:]) + if s:PreviousToken() =~ '\k' && s:Class() + return num_ind + s:sw() + endif + let is_op = s:sw() + else + let is_op = s:sw() + endif + call cursor(l:lnum, len(pline)) + let b_l = s:Nat(s:IsContOne(b:js_cache[1],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] == ')' && getline(num)[b:js_cache[2]-1] == '(' + if s:ParseCino('M') + return indent(l:lnum) + elseif &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 + return b_l + is_op endfunction - let &cpo = s:cpo_save unlet s:cpo_save |