" Vim syntax file
" Language: R noweb Files
" Maintainer: Johannes Ranke <[email protected]>
" Last Change: 2009 May 05
" Version: 0.9
" SVN: $Id: rnoweb.vim 84 2009-05-03 19:52:47Z ranke $
" Remarks: - This file is inspired by the proposal of
" Fernando Henrique Ferraz Pereira da Rosa <[email protected]>
" http://www.ime.usp.br/~feferraz/en/sweavevim.html
"

" Version Clears: {{{1
" For version 5.x: Clear all syntax items
" For version 6.x and 7.x: Quit when a syntax file was already loaded
if version < 600
syntax clear
elseif exists("b:current_syntax")
finish
endif

syn case match

" Extension of Tex clusters {{{1
runtime syntax/tex.vim
unlet b:current_syntax

syn cluster texMatchGroup add=@rnoweb
syn cluster texMathMatchGroup add=rnowebSexpr
syn cluster texEnvGroup add=@rnoweb
syn cluster texFoldGroup add=@rnoweb
syn cluster texDocGroup add=@rnoweb
syn cluster texPartGroup add=@rnoweb
syn cluster texChapterGroup add=@rnoweb
syn cluster texSectionGroup add=@rnoweb
syn cluster texSubSectionGroup add=@rnoweb
syn cluster texSubSubSectionGroup add=@rnoweb
syn cluster texParaGroup add=@rnoweb

" Highlighting of R code using an existing r.vim syntax file if available {{{1
syn include @rnowebR syntax/r.vim
syn region rnowebChunk matchgroup=rnowebDelimiter start="^<<.*>>=" matchgroup=rnowebDelimiter end="^@" contains=@rnowebR,rnowebChunkReference,rnowebChunk fold keepend
syn match rnowebChunkReference "^<<.*>>$" contained
syn region rnowebSexpr matchgroup=Delimiter start="\\Sexpr{" matchgroup=Delimiter end="}" contains=@rnowebR

" Sweave options command {{{1
syn region rnowebSweaveopts matchgroup=Delimiter start="\\SweaveOpts{" matchgroup=Delimiter end="}"

" rnoweb Cluster {{{1
syn cluster rnoweb contains=rnowebChunk,rnowebChunkReference,rnowebDelimiter,rnowebSexpr,rnowebSweaveopts

" Highlighting {{{1
hi def link rnowebDelimiter Delimiter
hi def link rnowebSweaveOpts Statement
hi def link rnowebChunkReference Delimiter

let b:current_syntax = "rnoweb"
" vim: foldmethod=marker: