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- " Vim syn file
- " Language: Altera AHDL
- " Maintainer: John Cook <john.cook@kla-tencor.com>
- " Last Change: 2001 Apr 25
- " quit when a syntax file was already loaded
- if exists("b:current_syntax")
- finish
- endif
- "this language is oblivious to case.
- syn case ignore
- " a bunch of keywords
- syn keyword ahdlKeyword assert begin bidir bits buried case clique
- syn keyword ahdlKeyword connected_pins constant defaults define design
- syn keyword ahdlKeyword device else elsif end for function generate
- syn keyword ahdlKeyword gnd help_id if in include input is machine
- syn keyword ahdlKeyword node of options others output parameters
- syn keyword ahdlKeyword returns states subdesign table then title to
- syn keyword ahdlKeyword tri_state_node variable vcc when with
- " a bunch of types
- syn keyword ahdlIdentifier carry cascade dffe dff exp global
- syn keyword ahdlIdentifier jkffe jkff latch lcell mcell memory opendrn
- syn keyword ahdlIdentifier soft srffe srff tffe tff tri wire x
- syn keyword ahdlMegafunction lpm_and lpm_bustri lpm_clshift lpm_constant
- syn keyword ahdlMegafunction lpm_decode lpm_inv lpm_mux lpm_or lpm_xor
- syn keyword ahdlMegafunction busmux mux
- syn keyword ahdlMegafunction divide lpm_abs lpm_add_sub lpm_compare
- syn keyword ahdlMegafunction lpm_counter lpm_mult
- syn keyword ahdlMegafunction altdpram csfifo dcfifo scfifo csdpram lpm_ff
- syn keyword ahdlMegafunction lpm_latch lpm_shiftreg lpm_ram_dq lpm_ram_io
- syn keyword ahdlMegafunction lpm_rom lpm_dff lpm_tff clklock pll ntsc
- syn keyword ahdlTodo contained TODO
- " String contstants
- syn region ahdlString start=+"+ skip=+\\"+ end=+"+
- " valid integer number formats (decimal, binary, octal, hex)
- syn match ahdlNumber '\<\d\+\>'
- syn match ahdlNumber '\<b"\(0\|1\|x\)\+"'
- syn match ahdlNumber '\<\(o\|q\)"\o\+"'
- syn match ahdlNumber '\<\(h\|x\)"\x\+"'
- " operators
- syn match ahdlOperator "[!&#$+\-<>=?:\^]"
- syn keyword ahdlOperator not and nand or nor xor xnor
- syn keyword ahdlOperator mod div log2 used ceil floor
- " one line and multi-line comments
- " (define these after ahdlOperator so -- overrides -)
- syn match ahdlComment "--.*" contains=ahdlNumber,ahdlTodo
- syn region ahdlComment start="%" end="%" contains=ahdlNumber,ahdlTodo
- " other special characters
- syn match ahdlSpecialChar "[\[\]().,;]"
- syn sync minlines=1
- " Define the default highlighting.
- " Only when an item doesn't have highlighting yet
- " The default highlighting.
- hi def link ahdlNumber ahdlString
- hi def link ahdlMegafunction ahdlIdentifier
- hi def link ahdlSpecialChar SpecialChar
- hi def link ahdlKeyword Statement
- hi def link ahdlString String
- hi def link ahdlComment Comment
- hi def link ahdlIdentifier Identifier
- hi def link ahdlOperator Operator
- hi def link ahdlTodo Todo
- let b:current_syntax = "ahdl"
- " vim:ts=8
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