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" Vim syntax file
" Language:    Verilog-AMS
" Maintainer:  S. Myles Prather <smprather@gmail.com>
"
" Version 1.1  S. Myles Prather <smprather@gmail.com>
"              Moved some keywords to the type category.
"              Added the metrix suffixes to the number matcher.
" Version 1.2  Prasanna Tamhankar <pratam@gmail.com>
"              Minor reserved keyword updates.
" Last Update: Thursday September 15 15:36:03 CST 2005 

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

" Set the local value of the 'iskeyword' option
setlocal iskeyword=@,48-57,_,192-255

" Annex B.1 'All keywords'
syn keyword verilogamsStatement above abs absdelay acos acosh ac_stim
syn keyword verilogamsStatement always analog analysis and asin
syn keyword verilogamsStatement asinh assign atan atan2 atanh
syn keyword verilogamsStatement buf bufif0 bufif1 ceil cmos connectmodule
syn keyword verilogamsStatement connectrules cos cosh cross ddt ddx deassign
syn keyword verilogamsStatement defparam disable discipline
syn keyword verilogamsStatement driver_update edge enddiscipline
syn keyword verilogamsStatement endconnectrules endmodule endfunction endgenerate
syn keyword verilogamsStatement endnature endparamset endprimitive endspecify
syn keyword verilogamsStatement endtable endtask event exp final_step
syn keyword verilogamsStatement flicker_noise floor flow force fork
syn keyword verilogamsStatement function generate highz0
syn keyword verilogamsStatement highz1 hypot idt idtmod if ifnone inf initial
syn keyword verilogamsStatement initial_step inout input join
syn keyword verilogamsStatement laplace_nd laplace_np laplace_zd laplace_zp
syn keyword verilogamsStatement large last_crossing limexp ln localparam log
syn keyword verilogamsStatement macromodule max medium min module nand nature
syn keyword verilogamsStatement negedge net_resolution nmos noise_table nor not
syn keyword verilogamsStatement notif0 notif1 or output paramset pmos
syn keyword verilogamsType      parameter real integer electrical input output
syn keyword verilogamsType      inout reg tri tri0 tri1 triand trior trireg
syn keyword verilogamsType      string from exclude aliasparam ground genvar
syn keyword verilogamsType      branch time realtime
syn keyword verilogamsStatement posedge potential pow primitive pull0 pull1
syn keyword verilogamsStatement pullup pulldown rcmos release
syn keyword verilogamsStatement rnmos rpmos rtran rtranif0 rtranif1
syn keyword verilogamsStatement scalared sin sinh slew small specify specparam
syn keyword verilogamsStatement sqrt strong0 strong1 supply0 supply1
syn keyword verilogamsStatement table tan tanh task timer tran tranif0
syn keyword verilogamsStatement tranif1 transition
syn keyword verilogamsStatement vectored wait wand weak0 weak1
syn keyword verilogamsStatement white_noise wire wor wreal xnor xor zi_nd
syn keyword verilogamsStatement zi_np zi_zd zi_zp
syn keyword verilogamsRepeat    forever repeat while for
syn keyword verilogamsLabel     begin end
syn keyword verilogamsConditional if else case casex casez default endcase
syn match   verilogamsConstant  ":inf"lc=1
syn match   verilogamsConstant  "-inf"lc=1
" Annex B.2 Discipline/nature
syn keyword verilogamsStatement abstol access continuous ddt_nature discrete
syn keyword verilogamsStatement domain idt_nature units 
" Annex B.3 Connect Rules
syn keyword verilogamsStatement connect merged resolveto split

syn match   verilogamsOperator  "[&|~><!)(*#%@+/=?:;}{,.\^\-\[\]]"
syn match   verilogamsOperator  "<+"
syn match   verilogamsStatement "[vV]("me=e-1
syn match   verilogamsStatement "[iI]("me=e-1

syn keyword verilogamsTodo contained TODO
syn region  verilogamsComment start="/\*" end="\*/" contains=verilogamsTodo
syn match   verilogamsComment "//.*" contains=verilogamsTodo

syn match verilogamsGlobal "`celldefine"
syn match verilogamsGlobal "`default_nettype"
syn match verilogamsGlobal "`define"
syn match verilogamsGlobal "`else"
syn match verilogamsGlobal "`elsif"
syn match verilogamsGlobal "`endcelldefine"
syn match verilogamsGlobal "`endif"
syn match verilogamsGlobal "`ifdef"
syn match verilogamsGlobal "`ifndef"
syn match verilogamsGlobal "`include"
syn match verilogamsGlobal "`line"
syn match verilogamsGlobal "`nounconnected_drive"
syn match verilogamsGlobal "`resetall"
syn match verilogamsGlobal "`timescale"
syn match verilogamsGlobal "`unconnected_drive"
syn match verilogamsGlobal "`undef"
syn match verilogamsSystask "$[a-zA-Z0-9_]\+\>"

syn match verilogamsConstant "\<[A-Z][A-Z0-9_]\+\>"

syn match   verilogamsNumber "\(\<\d\+\|\)'[bB]\s*[0-1_xXzZ?]\+\>"
syn match   verilogamsNumber "\(\<\d\+\|\)'[oO]\s*[0-7_xXzZ?]\+\>"
syn match   verilogamsNumber "\(\<\d\+\|\)'[dD]\s*[0-9_xXzZ?]\+\>"
syn match   verilogamsNumber "\(\<\d\+\|\)'[hH]\s*[0-9a-fA-F_xXzZ?]\+\>"
syn match   verilogamsNumber "\<[+-]\=[0-9_]\+\(\.[0-9_]*\|\)\(e[0-9_]*\|\)[TGMKkmunpfa]\=\>"

syn region  verilogamsString start=+"+ skip=+\\"+ end=+"+ contains=verilogamsEscape
syn match   verilogamsEscape +\\[nt"\\]+ contained
syn match   verilogamsEscape "\\\o\o\=\o\=" contained

"Modify the following as needed.  The trade-off is performance versus
"functionality.
syn sync lines=50

" Define the default highlighting.
" Only when an item doesn't have highlighting yet

" The default highlighting.
hi def link verilogamsCharacter    Character
hi def link verilogamsConditional  Conditional
hi def link verilogamsRepeat       Repeat
hi def link verilogamsString       String
hi def link verilogamsTodo         Todo
hi def link verilogamsComment      Comment
hi def link verilogamsConstant     Constant
hi def link verilogamsLabel        Label
hi def link verilogamsNumber       Number
hi def link verilogamsOperator     Special
hi def link verilogamsStatement    Statement
hi def link verilogamsGlobal       Define
hi def link verilogamsDirective    SpecialComment
hi def link verilogamsEscape       Special
hi def link verilogamsType         Type
hi def link verilogamsSystask      Function


let b:current_syntax = "verilogams"

" vim: ts=8