" Vim syntax file
" Language: Dot
" Filenames: *.dot
" Maintainer: Markus Mottl <markus.mottl@gmail.com>
" URL: http://www.ocaml.info/vim/syntax/dot.vim
" Last Change: 2011 May 17 - improved identifier matching + two new keywords
" 2001 May 04 - initial version
" quit when a syntax file was already loaded
if exists("b:current_syntax")
finish
endif
" Errors
syn match dotParErr ")"
syn match dotBrackErr "]"
syn match dotBraceErr "}"
" Enclosing delimiters
syn region dotEncl transparent matchgroup=dotParEncl start="(" matchgroup=dotParEncl end=")" contains=ALLBUT,dotParErr
syn region dotEncl transparent matchgroup=dotBrackEncl start="\[" matchgroup=dotBrackEncl end="\]" contains=ALLBUT,dotBrackErr
syn region dotEncl transparent matchgroup=dotBraceEncl start="{" matchgroup=dotBraceEncl end="}" contains=ALLBUT,dotBraceErr
" Comments
syn region dotComment start="//" end="$" contains=dotComment,dotTodo
syn region dotComment start="/\*" end="\*/" contains=dotComment,dotTodo
syn keyword dotTodo contained TODO FIXME XXX
" Strings
syn region dotString start=+"+ skip=+\\\\\|\\"+ end=+"+
" General keywords
syn keyword dotKeyword digraph node edge subgraph
" Graph attributes
syn keyword dotType center layers margin mclimit name nodesep nslimit
syn keyword dotType ordering page pagedir rank rankdir ranksep ratio
syn keyword dotType rotate size
" Node attributes
syn keyword dotType distortion fillcolor fontcolor fontname fontsize
syn keyword dotType height layer orientation peripheries regular
syn keyword dotType shape shapefile sides skew width
" Edge attributes
syn keyword dotType arrowhead arrowsize arrowtail constraint decorateP
syn keyword dotType dir headclip headlabel headport labelangle labeldistance
syn keyword dotType labelfontcolor labelfontname labelfontsize
syn keyword dotType minlen port_label_distance samehead sametail
syn keyword dotType tailclip taillabel tailport weight
" Shared attributes (graphs, nodes, edges)
syn keyword dotType color
" Shared attributes (graphs and edges)
syn keyword dotType bgcolor label URL
" Shared attributes (nodes and edges)
syn keyword dotType fontcolor fontname fontsize layer style
" Special chars
syn match dotKeyChar "="
syn match dotKeyChar ";"
syn match dotKeyChar "->"
" Identifier
syn match dotIdentifier /\<\w\+\(:\w\+\)\?\>/
" Synchronization
syn sync minlines=50
syn sync maxlines=500
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
hi def link dotParErr Error
hi def link dotBraceErr Error
hi def link dotBrackErr Error
hi def link dotComment Comment
hi def link dotTodo Todo
hi def link dotParEncl Keyword
hi def link dotBrackEncl Keyword
hi def link dotBraceEncl Keyword
hi def link dotKeyword Keyword
hi def link dotType Type
hi def link dotKeyChar Keyword
hi def link dotString String
hi def link dotIdentifier Identifier
let b:current_syntax = "dot"
" vim: ts=8
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