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" Vim syntax file
" Language: Renderman shader language
" Maintainer: Dan Piponi <dan@tanelorn.demon.co.uk>
" Last Change: 2001 May 09
" quit when a syntax file was already loaded
if exists("b:current_syntax")
finish
endif
" A bunch of useful Renderman keywords including special
" RenderMan control structures
syn keyword slStatement break return continue
syn keyword slConditional if else
syn keyword slRepeat while for
syn keyword slRepeat illuminance illuminate solar
syn keyword slTodo contained TODO FIXME XXX
" String and Character constants
" Highlight special characters (those which have a backslash) differently
syn match slSpecial contained "\\[0-9][0-9][0-9]\|\\."
syn region slString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=slSpecial
syn match slCharacter "'[^\\]'"
syn match slSpecialCharacter "'\\.'"
syn match slSpecialCharacter "'\\[0-9][0-9]'"
syn match slSpecialCharacter "'\\[0-9][0-9][0-9]'"
"catch errors caused by wrong parenthesis
syn region slParen transparent start='(' end=')' contains=ALLBUT,slParenError,slIncluded,slSpecial,slTodo,slUserLabel
syn match slParenError ")"
syn match slInParen contained "[{}]"
"integer number, or floating point number without a dot and with "f".
syn case ignore
syn match slNumber "\<[0-9]\+\(u\=l\=\|lu\|f\)\>"
"floating point number, with dot, optional exponent
syn match slFloat "\<[0-9]\+\.[0-9]*\(e[-+]\=[0-9]\+\)\=[fl]\=\>"
"floating point number, starting with a dot, optional exponent
syn match slFloat "\.[0-9]\+\(e[-+]\=[0-9]\+\)\=[fl]\=\>"
"floating point number, without dot, with exponent
syn match slFloat "\<[0-9]\+e[-+]\=[0-9]\+[fl]\=\>"
"hex number
syn match slNumber "\<0x[0-9a-f]\+\(u\=l\=\|lu\)\>"
"syn match slIdentifier "\<[a-z_][a-z0-9_]*\>"
syn case match
if exists("sl_comment_strings")
" A comment can contain slString, slCharacter and slNumber.
" But a "*/" inside a slString in a slComment DOES end the comment! So we
" need to use a special type of slString: slCommentString, which also ends on
" "*/", and sees a "*" at the start of the line as comment again.
" Unfortunately this doesn't very well work for // type of comments :-(
syntax match slCommentSkip contained "^\s*\*\($\|\s\+\)"
syntax region slCommentString contained start=+"+ skip=+\\\\\|\\"+ end=+"+ end=+\*/+me=s-1 contains=slSpecial,slCommentSkip
syntax region slComment2String contained start=+"+ skip=+\\\\\|\\"+ end=+"+ end="$" contains=slSpecial
syntax region slComment start="/\*" end="\*/" contains=slTodo,slCommentString,slCharacter,slNumber
else
syn region slComment start="/\*" end="\*/" contains=slTodo
endif
syntax match slCommentError "\*/"
syn keyword slOperator sizeof
syn keyword slType float point color string vector normal matrix void
syn keyword slStorageClass varying uniform extern
syn keyword slStorageClass light surface volume displacement transformation imager
syn keyword slVariable Cs Os P dPdu dPdv N Ng u v du dv s t
syn keyword slVariable L Cl Ol E I ncomps time Ci Oi
syn keyword slVariable Ps alpha
syn keyword slVariable dtime dPdtime
syn sync ccomment slComment minlines=10
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
command -nargs=+ HiLink hi def link <args>
HiLink slLabel Label
HiLink slUserLabel Label
HiLink slConditional Conditional
HiLink slRepeat Repeat
HiLink slCharacter Character
HiLink slSpecialCharacter slSpecial
HiLink slNumber Number
HiLink slFloat Float
HiLink slParenError slError
HiLink slInParen slError
HiLink slCommentError slError
HiLink slOperator Operator
HiLink slStorageClass StorageClass
HiLink slError Error
HiLink slStatement Statement
HiLink slType Type
HiLink slCommentError slError
HiLink slCommentString slString
HiLink slComment2String slString
HiLink slCommentSkip slComment
HiLink slString String
HiLink slComment Comment
HiLink slSpecial SpecialChar
HiLink slTodo Todo
HiLink slVariable Identifier
"HiLink slIdentifier Identifier
delcommand HiLink
let b:current_syntax = "sl"
" vim: ts=8
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