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" Vim syntax file " Language: VHDL [VHSIC (Very High Speed Integrated Circuit) Hardware Description Language] " Maintainer: Daniel Kho <daniel.kho@tauhop.com> " Previous Maintainer: Czo <Olivier.Sirol@lip6.fr> " Credits: Stephan Hegel <stephan.hegel@snc.siemens.com.cn> " Last Changed: 2016 Mar 05 by Daniel Kho " quit when a syntax file was already loaded if exists("b:current_syntax") finish endif let s:cpo_save = &cpo set cpo&vim " case is not significant syn case ignore " VHDL keywords syn keyword vhdlStatement access after alias all assert syn keyword vhdlStatement architecture array attribute syn keyword vhdlStatement assume assume_guarantee syn keyword vhdlStatement begin block body buffer bus syn keyword vhdlStatement case component configuration constant syn keyword vhdlStatement context cover syn keyword vhdlStatement default disconnect downto syn keyword vhdlStatement elsif end entity exit syn keyword vhdlStatement file for function syn keyword vhdlStatement fairness force syn keyword vhdlStatement generate generic group guarded syn keyword vhdlStatement impure in inertial inout is syn keyword vhdlStatement label library linkage literal loop syn keyword vhdlStatement map syn keyword vhdlStatement new next null syn keyword vhdlStatement of on open others out syn keyword vhdlStatement package port postponed procedure process pure syn keyword vhdlStatement parameter property protected syn keyword vhdlStatement range record register reject report return syn keyword vhdlStatement release restrict restrict_guarantee syn keyword vhdlStatement select severity signal shared syn keyword vhdlStatement subtype syn keyword vhdlStatement sequence strong syn keyword vhdlStatement then to transport type syn keyword vhdlStatement unaffected units until use syn keyword vhdlStatement variable syn keyword vhdlStatement vmode vprop vunit syn keyword vhdlStatement wait when while with syn keyword vhdlStatement note warning error failure " Linting of conditionals. syn match vhdlStatement "\<\(if\|else\)\>" syn match vhdlError "\<else\s\+if\>" " Types and type qualifiers " Predefined standard VHDL types syn match vhdlType "\<bit\>\'\=" syn match vhdlType "\<boolean\>\'\=" syn match vhdlType "\<natural\>\'\=" syn match vhdlType "\<positive\>\'\=" syn match vhdlType "\<integer\>\'\=" syn match vhdlType "\<real\>\'\=" syn match vhdlType "\<time\>\'\=" syn match vhdlType "\<bit_vector\>\'\=" syn match vhdlType "\<boolean_vector\>\'\=" syn match vhdlType "\<integer_vector\>\'\=" syn match vhdlType "\<real_vector\>\'\=" syn match vhdlType "\<time_vector\>\'\=" syn match vhdlType "\<character\>\'\=" syn match vhdlType "\<string\>\'\=" "syn keyword vhdlType severity_level syn keyword vhdlType line syn keyword vhdlType text " Predefined standard IEEE VHDL types syn match vhdlType "\<std_ulogic\>\'\=" syn match vhdlType "\<std_logic\>\'\=" syn match vhdlType "\<std_ulogic_vector\>\'\=" syn match vhdlType "\<std_logic_vector\>\'\=" syn match vhdlType "\<unresolved_signed\>\'\=" syn match vhdlType "\<unresolved_unsigned\>\'\=" syn match vhdlType "\<u_signed\>\'\=" syn match vhdlType "\<u_unsigned\>\'\=" syn match vhdlType "\<signed\>\'\=" syn match vhdlType "\<unsigned\>\'\=" " array attributes syn match vhdlAttribute "\'high" syn match vhdlAttribute "\'left" syn match vhdlAttribute "\'length" syn match vhdlAttribute "\'low" syn match vhdlAttribute "\'range" syn match vhdlAttribute "\'reverse_range" syn match vhdlAttribute "\'right" syn match vhdlAttribute "\'ascending" " block attributes syn match vhdlAttribute "\'simple_name" syn match vhdlAttribute "\'instance_name" syn match vhdlAttribute "\'path_name" syn match vhdlAttribute "\'foreign" " VHPI " signal attribute syn match vhdlAttribute "\'active" syn match vhdlAttribute "\'delayed" syn match vhdlAttribute "\'event" syn match vhdlAttribute "\'last_active" syn match vhdlAttribute "\'last_event" syn match vhdlAttribute "\'last_value" syn match vhdlAttribute "\'quiet" syn match vhdlAttribute "\'stable" syn match vhdlAttribute "\'transaction" syn match vhdlAttribute "\'driving" syn match vhdlAttribute "\'driving_value" " type attributes syn match vhdlAttribute "\'base" syn match vhdlAttribute "\'subtype" syn match vhdlAttribute "\'element" syn match vhdlAttribute "\'leftof" syn match vhdlAttribute "\'pos" syn match vhdlAttribute "\'pred" syn match vhdlAttribute "\'rightof" syn match vhdlAttribute "\'succ" syn match vhdlAttribute "\'val" syn match vhdlAttribute "\'image" syn match vhdlAttribute "\'value" syn keyword vhdlBoolean true false " for this vector values case is significant syn case match " Values for standard VHDL types syn match vhdlVector "\'[0L1HXWZU\-\?]\'" syn case ignore syn match vhdlVector "B\"[01_]\+\"" syn match vhdlVector "O\"[0-7_]\+\"" syn match vhdlVector "X\"[0-9a-f_]\+\"" syn match vhdlCharacter "'.'" syn region vhdlString start=+"+ end=+"+ " floating numbers syn match vhdlNumber "-\=\<\d\+\.\d\+\(E[+\-]\=\d\+\)\>" syn match vhdlNumber "-\=\<\d\+\.\d\+\>" syn match vhdlNumber "0*2#[01_]\+\.[01_]\+#\(E[+\-]\=\d\+\)\=" syn match vhdlNumber "0*16#[0-9a-f_]\+\.[0-9a-f_]\+#\(E[+\-]\=\d\+\)\=" " integer numbers syn match vhdlNumber "-\=\<\d\+\(E[+\-]\=\d\+\)\>" syn match vhdlNumber "-\=\<\d\+\>" syn match vhdlNumber "0*2#[01_]\+#\(E[+\-]\=\d\+\)\=" syn match vhdlNumber "0*16#[0-9a-f_]\+#\(E[+\-]\=\d\+\)\=" " operators syn keyword vhdlOperator and nand or nor xor xnor syn keyword vhdlOperator rol ror sla sll sra srl syn keyword vhdlOperator mod rem abs not " Concatenation and math operators syn match vhdlOperator "&\|+\|-\|\*\|\/" " Equality and comparison operators syn match vhdlOperator "=\|\/=\|>\|<\|>=" " Assignment operators syn match vhdlOperator "<=\|:=" syn match vhdlOperator "=>" " VHDL-2008 conversion, matching equality/non-equality operators syn match vhdlOperator "??\|?=\|?\/=\|?<\|?<=\|?>\|?>=" " VHDL-2008 external names syn match vhdlOperator "<<\|>>" " Linting for illegal operators " '=' syn match vhdlError "\(=\)[<=&+\-\*\/\\]\+" syn match vhdlError "[=&+\-\*\\]\+\(=\)" " '>', '<' " Allow external names: '<< ... >>' syn match vhdlError "\(>\)[<&+\-\/\\]\+" syn match vhdlError "[&+\-\/\\]\+\(>\)" syn match vhdlError "\(<\)[&+\-\/\\]\+" syn match vhdlError "[>=&+\-\/\\]\+\(<\)" " Covers most operators " support negative sign after operators. E.g. q<=-b; syn match vhdlError "\(&\|+\|\-\|\*\*\|\/=\|??\|?=\|?\/=\|?<=\|?>=\|>=\|<=\|:=\|=>\)[<>=&+\*\\?:]\+" syn match vhdlError "[<>=&+\-\*\\:]\+\(&\|+\|\*\*\|\/=\|??\|?=\|?\/=\|?<\|?<=\|?>\|?>=\|>=\|<=\|:=\|=>\)" syn match vhdlError "\(?<\|?>\)[<>&+\*\/\\?:]\+" syn match vhdlError "\(<<\|>>\)[<>&+\*\/\\?:]\+" "syn match vhdlError "[?]\+\(&\|+\|\-\|\*\*\|??\|?=\|?\/=\|?<\|?<=\|?>\|?>=\|:=\|=>\)" " '/' syn match vhdlError "\(\/\)[<>&+\-\*\/\\?:]\+" syn match vhdlError "[<>=&+\-\*\/\\:]\+\(\/\)" syn match vhdlSpecial "<>" syn match vhdlSpecial "[().,;]" " time syn match vhdlTime "\<\d\+\s\+\(\([fpnum]s\)\|\(sec\)\|\(min\)\|\(hr\)\)\>" syn match vhdlTime "\<\d\+\.\d\+\s\+\(\([fpnum]s\)\|\(sec\)\|\(min\)\|\(hr\)\)\>" syn case match syn keyword vhdlTodo contained TODO NOTE syn keyword vhdlFixme contained FIXME syn case ignore syn region vhdlComment start="/\*" end="\*/" contains=vhdlTodo,vhdlFixme,@Spell syn match vhdlComment "\(^\|\s\)--.*" contains=vhdlTodo,vhdlFixme,@Spell " Standard IEEE P1076.6 preprocessor directives (metacomments). syn match vhdlPreProc "/\*\s*rtl_synthesis\s\+\(on\|off\)\s*\*/" syn match vhdlPreProc "\(^\|\s\)--\s*rtl_synthesis\s\+\(on\|off\)\s*" syn match vhdlPreProc "/\*\s*rtl_syn\s\+\(on\|off\)\s*\*/" syn match vhdlPreProc "\(^\|\s\)--\s*rtl_syn\s\+\(on\|off\)\s*" " Industry-standard directives. These are not standard VHDL, but are commonly " used in the industry. syn match vhdlPreProc "/\*\s*synthesis\s\+translate_\(on\|off\)\s*\*/" "syn match vhdlPreProc "/\*\s*simulation\s\+translate_\(on\|off\)\s*\*/" syn match vhdlPreProc "/\*\s*pragma\s\+translate_\(on\|off\)\s*\*/" syn match vhdlPreProc "/\*\s*pragma\s\+synthesis_\(on\|off\)\s*\*/" syn match vhdlPreProc "/\*\s*synopsys\s\+translate_\(on\|off\)\s*\*/" syn match vhdlPreProc "\(^\|\s\)--\s*synthesis\s\+translate_\(on\|off\)\s*" "syn match vhdlPreProc "\(^\|\s\)--\s*simulation\s\+translate_\(on\|off\)\s*" syn match vhdlPreProc "\(^\|\s\)--\s*pragma\s\+translate_\(on\|off\)\s*" syn match vhdlPreProc "\(^\|\s\)--\s*pragma\s\+synthesis_\(on\|off\)\s*" syn match vhdlPreProc "\(^\|\s\)--\s*synopsys\s\+translate_\(on\|off\)\s*" "Modify the following as needed. The trade-off is performance versus functionality. syn sync minlines=600 " Define the default highlighting. " Only when an item doesn't have highlighting yet hi def link vhdlSpecial Special hi def link vhdlStatement Statement hi def link vhdlCharacter Character hi def link vhdlString String hi def link vhdlVector Number hi def link vhdlBoolean Number hi def link vhdlTodo Todo hi def link vhdlFixme Fixme hi def link vhdlComment Comment hi def link vhdlNumber Number hi def link vhdlTime Number hi def link vhdlType Type hi def link vhdlOperator Operator hi def link vhdlError Error hi def link vhdlAttribute Special hi def link vhdlPreProc PreProc let b:current_syntax = "vhdl" let &cpo = s:cpo_save unlet s:cpo_save " vim: ts=8