" Vim syntax file
" Language: Spice circuit simulator input netlist
" Maintainer: Noam Halevy <Noam.Halevy.motorola.com>
" Last Change: 2012 Jun 01
" (Dominique Pelle added @Spell)
"
" This is based on sh.vim by Lennart Schultz
" but greatly simplified

" 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

" spice syntax is case INsensitive
syn case ignore

syn keyword spiceTodo contained TODO

syn match spiceComment "^ \=\*.*$" contains=@Spell
syn match spiceComment "\$.*$" contains=@Spell

" Numbers, all with engineering suffixes and optional units
"==========================================================
"floating point number, with dot, optional exponent
syn match spiceNumber "\<[0-9]\+\.[0-9]*\(e[-+]\=[0-9]\+\)\=\(meg\=\|[afpnumkg]\)\="
"floating point number, starting with a dot, optional exponent
syn match spiceNumber "\.[0-9]\+\(e[-+]\=[0-9]\+\)\=\(meg\=\|[afpnumkg]\)\="
"integer number with optional exponent
syn match spiceNumber "\<[0-9]\+\(e[-+]\=[0-9]\+\)\=\(meg\=\|[afpnumkg]\)\="

" Misc
"=====
syn match spiceWrapLineOperator "\\$"
syn match spiceWrapLineOperator "^+"

syn match spiceStatement "^ \=\.\I\+"

" Matching pairs of parentheses
"==========================================
syn region spiceParen transparent matchgroup=spiceOperator start="(" end=")" contains=ALLBUT,spiceParenError
syn region spiceSinglequote matchgroup=spiceOperator start=+'+ end=+'+

" Errors
"=======
syn match spiceParenError ")"

" Syncs
" =====
syn sync minlines=50

" 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_spice_syntax_inits")
if version < 508
let did_spice_syntax_inits = 1
command -nargs=+ HiLink hi link <args>
else
command -nargs=+ HiLink hi def link <args>
endif

HiLink spiceTodo Todo
HiLink spiceWrapLineOperator spiceOperator
HiLink spiceSinglequote spiceExpr
HiLink spiceExpr Function
HiLink spiceParenError Error
HiLink spiceStatement Statement
HiLink spiceNumber Number
HiLink spiceComment Comment
HiLink spiceOperator Operator

delcommand HiLink
endif

let b:current_syntax = "spice"

" insert the following to $VIM/syntax/scripts.vim
" to autodetect HSpice netlists and text listing output:
"
" " Spice netlists and text listings
" elseif getline(1) =~ 'spice\>' || getline("$") =~ '^\.end'
" so <sfile>:p:h/spice.vim

" vim: ts=8