" Vim syntax file
" Language: AYacc
" Maintainer: Mathieu Clabaut <[email protected]>
" LastChange: 2011 Dec 25
" Original: Yacc, maintained by Dr. Charles E. Campbell, Jr.
" Comment: Replaced sourcing c.vim file by ada.vim and rename yacc*
" in ayacc*

" For version 5.x: Clear all syntax items
" For version 6.x: Quit when a syntax file was already loaded
if version < 600
syntax clear
elseif exists("b:current_syntax")
finish
endif

" Read the Ada syntax to start with
if version < 600
so <sfile>:p:h/ada.vim
else
runtime! syntax/ada.vim
unlet b:current_syntax
endif

let s:cpo_save = &cpo
set cpo&vim

" Clusters
syn cluster ayaccActionGroup contains=ayaccDelim,cInParen,cTodo,cIncluded,ayaccDelim,ayaccCurlyError,ayaccUnionCurly,ayaccUnion,cUserLabel,cOctalZero,cCppOut2,cCppSkip,cErrInBracket,cErrInParen,cOctalError
syn cluster ayaccUnionGroup contains=ayaccKey,cComment,ayaccCurly,cType,cStructure,cStorageClass,ayaccUnionCurly

" Yacc stuff
syn match ayaccDelim "^[ \t]*[:|;]"
syn match ayaccOper "@\d\+"

syn match ayaccKey "^[ \t]*%\(token\|type\|left\|right\|start\|ident\)\>"
syn match ayaccKey "[ \t]%\(prec\|expect\|nonassoc\)\>"
syn match ayaccKey "\$\(<[a-zA-Z_][a-zA-Z_0-9]*>\)\=[\$0-9]\+"
syn keyword ayaccKeyActn yyerrok yyclearin

syn match ayaccUnionStart "^%union" skipwhite skipnl nextgroup=ayaccUnion
syn region ayaccUnion contained matchgroup=ayaccCurly start="{" matchgroup=ayaccCurly end="}" contains=@ayaccUnionGroup
syn region ayaccUnionCurly contained matchgroup=ayaccCurly start="{" matchgroup=ayaccCurly end="}" contains=@ayaccUnionGroup
syn match ayaccBrkt contained "[<>]"
syn match ayaccType "<[a-zA-Z_][a-zA-Z0-9_]*>" contains=ayaccBrkt
syn match ayaccDefinition "^[A-Za-z][A-Za-z0-9_]*[ \t]*:"

" special Yacc separators
syn match ayaccSectionSep "^[ \t]*%%"
syn match ayaccSep "^[ \t]*%{"
syn match ayaccSep "^[ \t]*%}"

" I'd really like to highlight just the outer {}. Any suggestions???
syn match ayaccCurlyError "[{}]"
syn region ayaccAction matchgroup=ayaccCurly start="{" end="}" contains=ALLBUT,@ayaccActionGroup

if version >= 508 || !exists("did_ayacc_syntax_inits")
if version < 508
let did_ayacc_syntax_inits = 1
command -nargs=+ HiLink hi link <args>
else
command -nargs=+ HiLink hi def link <args>
endif

" Internal ayacc highlighting links
HiLink ayaccBrkt ayaccStmt
HiLink ayaccKey ayaccStmt
HiLink ayaccOper ayaccStmt
HiLink ayaccUnionStart ayaccKey

" External ayacc highlighting links
HiLink ayaccCurly Delimiter
HiLink ayaccCurlyError Error
HiLink ayaccDefinition Function
HiLink ayaccDelim Function
HiLink ayaccKeyActn Special
HiLink ayaccSectionSep Todo
HiLink ayaccSep Delimiter
HiLink ayaccStmt Statement
HiLink ayaccType Type

" since Bram doesn't like my Delimiter :|
HiLink Delimiter Type
delcommand HiLink
endif

let b:current_syntax = "ayacc"

let &cpo = s:cpo_save
unlet s:cpo_save
" vim: ts=15