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" Vim syntax file
" Language: PCCTS
" Maintainer: Scott Bigham <dsb@killerbunnies.org>
" Last Change: 10 Aug 1999
" quit when a syntax file was already loaded
if exists("b:current_syntax")
finish
endif
" Read the C++ syntax to start with
syn include @cppTopLevel syntax/cpp.vim
syn region pcctsAction matchgroup=pcctsDelim start="<<" end=">>?\=" contains=@cppTopLevel,pcctsRuleRef
syn region pcctsArgBlock matchgroup=pcctsDelim start="\(>\s*\)\=\[" end="\]" contains=@cppTopLevel,pcctsRuleRef
syn region pcctsString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=pcctsSpecialChar
syn match pcctsSpecialChar "\\\\\|\\\"" contained
syn region pcctsComment start="/\*" end="\*/" contains=cTodo
syn match pcctsComment "//.*$" contains=cTodo
syn region pcctsDirective start="^\s*#header\s\+<<" end=">>" contains=pcctsAction keepend
syn match pcctsDirective "^\s*#parser\>.*$" contains=pcctsString,pcctsComment
syn match pcctsDirective "^\s*#tokdefs\>.*$" contains=pcctsString,pcctsComment
syn match pcctsDirective "^\s*#token\>.*$" contains=pcctsString,pcctsAction,pcctsTokenName,pcctsComment
syn region pcctsDirective start="^\s*#tokclass\s\+[A-Z]\i*\s\+{" end="}" contains=pcctsString,pcctsTokenName
syn match pcctsDirective "^\s*#lexclass\>.*$" contains=pcctsTokenName
syn region pcctsDirective start="^\s*#errclass\s\+[^{]\+\s\+{" end="}" contains=pcctsString,pcctsTokenName
syn match pcctsDirective "^\s*#pred\>.*$" contains=pcctsTokenName,pcctsAction
syn cluster pcctsInRule contains=pcctsString,pcctsRuleName,pcctsTokenName,pcctsAction,pcctsArgBlock,pcctsSubRule,pcctsLabel,pcctsComment
syn region pcctsRule start="\<[a-z][A-Za-z0-9_]*\>\(\s*\[[^]]*\]\)\=\(\s*>\s*\[[^]]*\]\)\=\s*:" end=";" contains=@pcctsInRule
syn region pcctsSubRule matchgroup=pcctsDelim start="(" end=")\(+\|\*\|?\(\s*=>\)\=\)\=" contains=@pcctsInRule contained
syn region pcctsSubRule matchgroup=pcctsDelim start="{" end="}" contains=@pcctsInRule contained
syn match pcctsRuleName "\<[a-z]\i*\>" contained
syn match pcctsTokenName "\<[A-Z]\i*\>" contained
syn match pcctsLabel "\<\I\i*:\I\i*" contained contains=pcctsLabelHack,pcctsRuleName,pcctsTokenName
syn match pcctsLabel "\<\I\i*:\"\([^\\]\|\\.\)*\"" contained contains=pcctsLabelHack,pcctsString
syn match pcctsLabelHack "\<\I\i*:" contained
syn match pcctsRuleRef "\$\I\i*\>" contained
syn match pcctsRuleRef "\$\d\+\(\.\d\+\)\>" contained
syn keyword pcctsClass class nextgroup=pcctsClassName skipwhite
syn match pcctsClassName "\<\I\i*\>" contained nextgroup=pcctsClassBlock skipwhite skipnl
syn region pcctsClassBlock start="{" end="}" contained contains=pcctsRule,pcctsComment,pcctsDirective,pcctsAction,pcctsException,pcctsExceptionHandler
syn keyword pcctsException exception nextgroup=pcctsExceptionRuleRef skipwhite
syn match pcctsExceptionRuleRef "\[\I\i*\]" contained contains=pcctsExceptionID
syn match pcctsExceptionID "\I\i*" contained
syn keyword pcctsExceptionHandler catch default
syn keyword pcctsExceptionHandler NoViableAlt NoSemViableAlt
syn keyword pcctsExceptionHandler MismatchedToken
syn sync clear
syn sync match pcctsSyncAction grouphere pcctsAction "<<"
syn sync match pcctsSyncAction "<<\([^>]\|>[^>]\)*>>"
syn sync match pcctsSyncRule grouphere pcctsRule "\<[a-z][A-Za-z0-9_]*\>\s*\[[^]]*\]\s*:"
syn sync match pcctsSyncRule grouphere pcctsRule "\<[a-z][A-Za-z0-9_]*\>\(\s*\[[^]]*\]\)\=\s*>\s*\[[^]]*\]\s*:"
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
hi def link pcctsDelim Special
hi def link pcctsTokenName Identifier
hi def link pcctsRuleName Statement
hi def link pcctsLabelHack Label
hi def link pcctsDirective PreProc
hi def link pcctsString String
hi def link pcctsComment Comment
hi def link pcctsClass Statement
hi def link pcctsClassName Identifier
hi def link pcctsException Statement
hi def link pcctsExceptionHandler Keyword
hi def link pcctsExceptionRuleRef pcctsDelim
hi def link pcctsExceptionID Identifier
hi def link pcctsRuleRef Identifier
hi def link pcctsSpecialChar SpecialChar
let b:current_syntax = "pccts"
" vim: ts=8