" Maintainer: Dr. Charles E. Campbell, Jr. <Charles.Campbell@gsfc.nasa.gov>
" Last change: April 8, 1999
" Remove any old syntax stuff hanging around
syn clear
" Read the C syntax to start with
source <sfile>:p:h/c.vim
" Clusters
syn cluster yaccActionGroup contains=yaccDelim,cInParen,cTodo,cIncluded,yaccDelim,yaccCurlyError,yaccUnionCurly,yaccUnion,cUserLabel,cOctalZero,cCppOut2,cCppSkip,cErrInBracket,cErrInParen,cOctalError
syn cluster yaccUnionGroup contains=yaccKey,cComment,yaccCurly,cType,cStructure,cStorageClass,yaccUnionCurly
" Yacc stuff
syn match yaccDelim "^[ \t]*[:|;]"
syn match yaccOper "@\d\+"
syn match yaccKey "^[ \t]*%\(token\|type\|left\|right\|start\|ident\)\>"
syn match yaccKey "[ \t]%\(prec\|expect\|nonassoc\)\>"
syn match yaccKey "\$\(<[a-zA-Z_][a-zA-Z_0-9]*>\)\=[\$0-9]\+"
syn keyword yaccKeyActn yyerrok yyclearin
syn match yaccUnionStart "^%union" skipwhite skipnl nextgroup=yaccUnion
syn region yaccUnion contained matchgroup=yaccCurly start="{" matchgroup=yaccCurly end="}" contains=@yaccUnionGroup
syn region yaccUnionCurly contained matchgroup=yaccCurly start="{" matchgroup=yaccCurly end="}" contains=@yaccUnionGroup
syn match yaccBrkt contained "[<>]"
syn match yaccType "<[a-zA-Z_][a-zA-Z0-9_]*>" contains=yaccBrkt
syn match yaccDefinition "^[A-Za-z][A-Za-z0-9_]*[ \t]*:"
" special Yacc separators
syn match yaccSectionSep "^[ \t]*%%"
syn match yaccSep "^[ \t]*%{"
syn match yaccSep "^[ \t]*%}"
" I'd really like to highlight just the outer {}. Any suggestions???
syn match yaccCurlyError "[{}]"
syn region yaccAction matchgroup=yaccCurly start="{" end="}" contains=ALLBUT,@yaccActionGroup
if !exists("did_yacc_syntax_inits")
" The default methods for highlighting. Can be overridden later