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" Vim syntax file
" Language: ABEL
" Maintainer: John Cook <johncook3@gmail.com>
" Last Change: 2011 Dec 27
" 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
let s:cpo_save = &cpo
set cpo&vim
" this language is oblivious to case
syn case ignore
" A bunch of keywords
syn keyword abelHeader module title device options
syn keyword abelSection declarations equations test_vectors end
syn keyword abelDeclaration state truth_table state_diagram property
syn keyword abelType pin node attribute constant macro library
syn keyword abelTypeId com reg neg pos buffer dc reg_d reg_t contained
syn keyword abelTypeId reg_sr reg_jk reg_g retain xor invert contained
syn keyword abelStatement when then else if with endwith case endcase
syn keyword abelStatement fuses expr trace
" option to omit obsolete statements
if exists("abel_obsolete_ok")
syn keyword abelStatement enable flag in
else
syn keyword abelError enable flag in
endif
" directives
syn match abelDirective "@alternate"
syn match abelDirective "@standard"
syn match abelDirective "@const"
syn match abelDirective "@dcset"
syn match abelDirective "@include"
syn match abelDirective "@page"
syn match abelDirective "@radix"
syn match abelDirective "@repeat"
syn match abelDirective "@irp"
syn match abelDirective "@expr"
syn match abelDirective "@if"
syn match abelDirective "@ifb"
syn match abelDirective "@ifnb"
syn match abelDirective "@ifdef"
syn match abelDirective "@ifndef"
syn match abelDirective "@ifiden"
syn match abelDirective "@ifniden"
syn keyword abelTodo contained TODO XXX FIXME
" wrap up type identifiers to differentiate them from normal strings
syn region abelSpecifier start='istype' end=';' contains=abelTypeIdChar,abelTypeId,abelTypeIdEnd keepend
syn match abelTypeIdChar "[,']" contained
syn match abelTypeIdEnd ";" contained
" string contstants and special characters within them
syn match abelSpecial contained "\\['\\]"
syn region abelString start=+'+ skip=+\\"+ end=+'+ contains=abelSpecial
" valid integer number formats (decimal, binary, octal, hex)
syn match abelNumber "\<[-+]\=[0-9]\+\>"
syn match abelNumber "\^d[0-9]\+\>"
syn match abelNumber "\^b[01]\+\>"
syn match abelNumber "\^o[0-7]\+\>"
syn match abelNumber "\^h[0-9a-f]\+\>"
" special characters
" (define these after abelOperator so ?= overrides ?)
syn match abelSpecialChar "[\[\](){},;:?]"
" operators
syn match abelLogicalOperator "[!#&$]"
syn match abelRangeOperator "\.\."
syn match abelAlternateOperator "[/*+]"
syn match abelAlternateOperator ":[+*]:"
syn match abelArithmeticOperator "[-%]"
syn match abelArithmeticOperator "<<"
syn match abelArithmeticOperator ">>"
syn match abelRelationalOperator "[<>!=]="
syn match abelRelationalOperator "[<>]"
syn match abelAssignmentOperator "[:?]\=="
syn match abelAssignmentOperator "?:="
syn match abelTruthTableOperator "->"
" signal extensions
syn match abelExtension "\.aclr\>"
syn match abelExtension "\.aset\>"
syn match abelExtension "\.clk\>"
syn match abelExtension "\.clr\>"
syn match abelExtension "\.com\>"
syn match abelExtension "\.fb\>"
syn match abelExtension "\.[co]e\>"
syn match abelExtension "\.l[eh]\>"
syn match abelExtension "\.fc\>"
syn match abelExtension "\.pin\>"
syn match abelExtension "\.set\>"
syn match abelExtension "\.[djksrtq]\>"
syn match abelExtension "\.pr\>"
syn match abelExtension "\.re\>"
syn match abelExtension "\.a[pr]\>"
syn match abelExtension "\.s[pr]\>"
" special constants
syn match abelConstant "\.[ckudfpxz]\."
syn match abelConstant "\.sv[2-9]\."
" one-line comments
syn region abelComment start=+"+ end=+"\|$+ contains=abelNumber,abelTodo
" option to prevent C++ style comments
if !exists("abel_cpp_comments_illegal")
syn region abelComment start=+//+ end=+$+ contains=abelNumber,abelTodo
endif
syn sync minlines=1
" Define the default highlighting.
" For version 5.7 and earlier: only when not done already
" For version 5.8 and later: only when an item doesn't have highlighting yet
if version >= 508 || !exists("did_abel_syn_inits")
if version < 508
let did_abel_syn_inits = 1
command -nargs=+ HiLink hi link <args>
else
command -nargs=+ HiLink hi def link <args>
endif
" The default highlighting.
HiLink abelHeader abelStatement
HiLink abelSection abelStatement
HiLink abelDeclaration abelStatement
HiLink abelLogicalOperator abelOperator
HiLink abelRangeOperator abelOperator
HiLink abelAlternateOperator abelOperator
HiLink abelArithmeticOperator abelOperator
HiLink abelRelationalOperator abelOperator
HiLink abelAssignmentOperator abelOperator
HiLink abelTruthTableOperator abelOperator
HiLink abelSpecifier abelStatement
HiLink abelOperator abelStatement
HiLink abelStatement Statement
HiLink abelIdentifier Identifier
HiLink abelTypeId abelType
HiLink abelTypeIdChar abelType
HiLink abelType Type
HiLink abelNumber abelString
HiLink abelString String
HiLink abelConstant Constant
HiLink abelComment Comment
HiLink abelExtension abelSpecial
HiLink abelSpecialChar abelSpecial
HiLink abelTypeIdEnd abelSpecial
HiLink abelSpecial Special
HiLink abelDirective PreProc
HiLink abelTodo Todo
HiLink abelError Error
delcommand HiLink
endif
let b:current_syntax = "abel"
let &cpo = s:cpo_save
unlet s:cpo_save
" vim:ts=8
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