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" Maintainer: Charles E. Campbell, Jr. <NdrOchipS@PcampbellAfamily.Mbiz>
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" Last Change: Jan 09, 2008
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" Last Change: Oct 21, 2008
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" URL: http://mysite.verizon.net/astronaut/vim/index.html#vimlinks_syntax
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" g:yacc_uses_cpp : if this variable exists, then C++ is loaded rather than C
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" g:yacc_minlines : see :help :he syn-sync-minlines -- default 50
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" g:yacc_maxlines : see :help :he syn-sync-maxlines -- default 200
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" ---------------------------------------------------------------------
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" For version 5.x: Clear all syntax items {{{1
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" For version 6.x: Quit when a syntax file was already loaded
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" this version of syntax/yacc.vim requires 6.0 or later
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elseif exists("b:current_syntax")
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if exists("b:current_syntax")
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" ---------------------------------------------------------------------
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" Folding Support {{{1
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com! -nargs=+ HiFold <args> fold
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com! -nargs=+ HiFold <args>
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" ---------------------------------------------------------------------
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" Read the C syntax to start with {{{1
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if exists("g:yacc_uses_cpp")
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runtime! syntax/cpp.vim
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elseif exists("g:yacc_uses_cpp")
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so <sfile>:p:h/cpp.vim
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if exists("g:yacc_uses_cpp")
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syn include @yaccCode <sfile>:p:h/cpp.vim
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syn include @yaccCode <sfile>:p:h/c.vim
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" ---------------------------------------------------------------------
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syn cluster yaccActionGroup contains=yaccDelim,cInParen,cTodo,cIncluded,yaccDelim,yaccCurlyError,yaccUnionCurly,yaccUnion,cUserLabel,cOctalZero,cCppOut2,cCppSkip,cErrInBracket,cErrInParen,cOctalError,cCommentStartError,cParenError
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syn cluster yaccUnionGroup contains=yaccKey,cComment,yaccCurly,cType,cStructure,cStorageClass,yaccUnionCurly
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" ---------------------------------------------------------------------
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syn match yaccDelim "^\s*[:|;]"
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syn match yaccOper "@\d\+"
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syn match yaccKey "^\s*%\(token\|type\|left\|right\|start\|ident\|nonassoc\)\>"
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syn match yaccKey "\s%\(prec\|expect\)\>"
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syn match yaccKey "\$\(<[a-zA-Z_][a-zA-Z_0-9]*>\)\=[\$0-9]\+"
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syn keyword yaccKeyActn yyerrok yyclearin
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syn match yaccUnionStart "^%union" skipwhite skipnl nextgroup=yaccUnion
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syn region yaccUnion contained matchgroup=yaccCurly start="{" matchgroup=yaccCurly end="}" contains=@yaccUnionGroup
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syn region yaccUnionCurly contained matchgroup=yaccCurly start="{" matchgroup=yaccCurly end="}" contains=@yaccUnionGroup
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syn match yaccBrkt contained "[<>]"
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syn match yaccType "<[a-zA-Z_][a-zA-Z0-9_]*>" contains=yaccBrkt
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syn match yaccDefinition "^[A-Za-z][A-Za-z0-9_]*\_s*:"
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" ---------------------------------------------------------------------
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" special Yacc separators {{{1
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syn match yaccSectionSep "^[ \t]*%%"
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syn match yaccSep "^[ \t]*%{"
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syn match yaccSep "^[ \t]*%}"
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syn cluster yaccInitCluster contains=yaccKey,yaccKeyActn,yaccBrkt,yaccType,yaccString,yaccUnionStart,yaccHeader2,yaccComment
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syn cluster yaccRulesCluster contains=yaccNonterminal,yaccString
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" ---------------------------------------------------------------------
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HiFold syn region yaccInit start='.'ms=s-1,rs=s-1 matchgroup=yaccSectionSep end='^%%$'me=e-2,re=e-2 contains=@yaccInitCluster nextgroup=yaccRules skipwhite skipempty contained
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HiFold syn region yaccInit2 start='\%^.'ms=s-1,rs=s-1 matchgroup=yaccSectionSep end='^%%$'me=e-2,re=e-2 contains=@yaccInitCluster nextgroup=yaccRules skipwhite skipempty
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HiFold syn region yaccHeader2 matchgroup=yaccSep start="^\s*\zs%{" end="^\s*%}" contains=@yaccCode nextgroup=yaccInit skipwhite skipempty contained
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HiFold syn region yaccHeader matchgroup=yaccSep start="^\s*\zs%{" end="^\s*%}" contains=@yaccCode nextgroup=yaccInit skipwhite skipempty
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HiFold syn region yaccRules matchgroup=yaccSectionSep start='^%%$' end='^%%$'me=e-2,re=e-2 contains=@yaccRulesCluster nextgroup=yaccEndCode skipwhite skipempty contained
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HiFold syn region yaccEndCode matchgroup=yaccSectionSep start='^%%$' end='\%$' contains=@yaccCode contained
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" ---------------------------------------------------------------------
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syn match yaccDelim "[:|]" contained
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syn match yaccOper "@\d\+" contained
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syn match yaccKey "^\s*%\(token\|type\|left\|right\|start\|ident\|nonassoc\)\>" contained
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syn match yaccKey "\s%\(prec\|expect\)\>" contained
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syn match yaccKey "\$\(<[a-zA-Z_][a-zA-Z_0-9]*>\)\=[\$0-9]\+" contained
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syn keyword yaccKeyActn yyerrok yyclearin contained
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syn match yaccUnionStart "^%union" skipwhite skipnl nextgroup=yaccUnion contained
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HiFold syn region yaccUnion matchgroup=yaccCurly start="{" matchgroup=yaccCurly end="}" contains=@yaccCode contained
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syn match yaccBrkt "[<>]" contained
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syn match yaccType "<[a-zA-Z_][a-zA-Z0-9_]*>" contains=yaccBrkt contained
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HiFold syn region yaccNonterminal start="^\s*\a\w*\ze\_s*\(/\*\_.\{-}\*/\)\=\_s*:" matchgroup=yaccDelim end=";" matchgroup=yaccSectionSep end='^%%$'me=e-2,re=e-2 contains=yaccAction,yaccDelim,yaccString,yaccComment contained
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syn region yaccComment start="/\*" end="\*/"
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syn match yaccString "'[^']*'" contained
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" ---------------------------------------------------------------------
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" I'd really like to highlight just the outer {}. Any suggestions??? {{{1
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syn match yaccCurlyError "[{}]"
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syn region yaccAction matchgroup=yaccCurly start="{" end="}" contains=ALLBUT,@yaccActionGroup
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syn match yaccCurlyError "[{}]"
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HiFold syn region yaccAction matchgroup=yaccCurly start="{" end="}" contains=@yaccCode contained
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" ---------------------------------------------------------------------
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" Yacc synchronization: {{{1
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if exists("g:yacc_maxlines")
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exe "syn sync maxlines=".g:yacc_maxlines
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if exists("g:yacc_minlines")
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exe "syn sync minlines=".g:yacc_minlines
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" ---------------------------------------------------------------------
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" Define the default highlighting. {{{1
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" For version 5.7 and earlier: only when not done already
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" For version 5.8 and later: only when an item doesn't have highlighting yet
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if version >= 508 || !exists("did_yacc_syn_inits")
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let did_yacchdl_syn_inits = 1
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command -nargs=+ HiLink hi link <args>
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command -nargs=+ HiLink hi def link <args>
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if !exists("did_yacc_syn_inits")
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command -nargs=+ HiLink hi def link <args>
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" Internal yacc highlighting links {{{2
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HiLink yaccBrkt yaccStmt
added
removed
runtime/syntax/yacc.vim
