" Vim syntax file
" Language:	CUPL
" Maintainer:	John Cook <johncook3@gmail.com>
" Last Change:	2011 Dec 27

" quit when a syntax file was already loaded
if exists("b:current_syntax")
  finish
endif

let s:cpo_save = &cpo
set cpo&vim

" this language is oblivious to case.
syn case ignore

" A bunch of keywords
syn keyword cuplHeader name partno date revision rev designer company nextgroup=cuplHeaderContents
syn keyword cuplHeader assembly assy location device nextgroup=cuplHeaderContents

syn keyword cuplTodo contained TODO XXX FIXME

" cuplHeaderContents uses default highlighting except for numbers
syn match cuplHeaderContents ".\+;"me=e-1 contains=cuplNumber contained

" String contstants
syn region cuplString start=+'+ end=+'+
syn region cuplString start=+"+ end=+"+

syn keyword cuplStatement append condition
syn keyword cuplStatement default else
syn keyword cuplStatement field fld format function fuse
syn keyword cuplStatement group if jump loc
syn keyword cuplStatement macro min node out
syn keyword cuplStatement pin pinnode present table
syn keyword cuplStatement sequence sequenced sequencejk sequencers sequencet

syn keyword cuplFunction log2 log8 log16 log

" Valid integer number formats (decimal, binary, octal, hex)
syn match cuplNumber "\<[-+]\=[0-9]\+\>"
syn match cuplNumber "'d'[0-9]\+\>"
syn match cuplNumber "'b'[01x]\+\>"
syn match cuplNumber "'o'[0-7x]\+\>"
syn match cuplNumber "'h'[0-9a-fx]\+\>"

" operators
syn match cuplLogicalOperator "[!#&$]"
syn match cuplArithmeticOperator "[-+*/%]"
syn match cuplArithmeticOperator "\*\*"
syn match cuplAssignmentOperator ":\=="
syn match cuplEqualityOperator ":"
syn match cuplTruthTableOperator "=>"

" Signal extensions
syn match cuplExtension "\.[as][pr]\>"
syn match cuplExtension "\.oe\>"
syn match cuplExtension "\.oemux\>"
syn match cuplExtension "\.[dlsrjk]\>"
syn match cuplExtension "\.ck\>"
syn match cuplExtension "\.dq\>"
syn match cuplExtension "\.ckmux\>"
syn match cuplExtension "\.tec\>"
syn match cuplExtension "\.cnt\>"

syn match cuplRangeOperator "\.\." contained

" match ranges like memadr:[0000..1FFF]
" and highlight both the numbers and the .. operator
syn match cuplNumberRange "\<\x\+\.\.\x\+\>" contains=cuplRangeOperator

" match vectors of type [name3..0] (decimal numbers only)
" but assign them no special highlighting except for the .. operator
syn match cuplBitVector "\<\a\+\d\+\.\.\d\+\>" contains=cuplRangeOperator

" other special characters
syn match cuplSpecialChar "[\[\](){},;]"

" directives
" (define these after cuplOperator so $xxx overrides $)
syn match cuplDirective "\$msg"
syn match cuplDirective "\$macro"
syn match cuplDirective "\$mend"
syn match cuplDirective "\$repeat"
syn match cuplDirective "\$repend"
syn match cuplDirective "\$define"
syn match cuplDirective "\$include"

" multi-line comments
syn region cuplComment start=+/\*+ end=+\*/+ contains=cuplNumber,cuplTodo

syn sync minlines=1

" Define the default highlighting.
" Only when an item doesn't have highlighting yet
command -nargs=+ HiLink hi def link <args>

" The default highlighting.
HiLink cuplHeader	cuplStatement
HiLink cuplLogicalOperator	 cuplOperator
HiLink cuplRangeOperator	 cuplOperator
HiLink cuplArithmeticOperator cuplOperator
HiLink cuplAssignmentOperator cuplOperator
HiLink cuplEqualityOperator	 cuplOperator
HiLink cuplTruthTableOperator cuplOperator
HiLink cuplOperator	cuplStatement
HiLink cuplFunction	cuplStatement
HiLink cuplStatement Statement
HiLink cuplNumberRange cuplNumber
HiLink cuplNumber	  cuplString
HiLink cuplString	String
HiLink cuplComment	Comment
HiLink cuplExtension   cuplSpecial
HiLink cuplSpecialChar cuplSpecial
HiLink cuplSpecial	Special
HiLink cuplDirective PreProc
HiLink cuplTodo	Todo

delcommand HiLink

let b:current_syntax = "cupl"

let &cpo = s:cpo_save
unlet s:cpo_save

" vim:ts=8