73 lines
2.9 KiB
VimL
73 lines
2.9 KiB
VimL
if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'vim') == -1
|
|
|
|
" Vim syntax file
|
|
" Language: CWEB
|
|
" Maintainer: Andreas Scherer <andreas.scherer@pobox.com>
|
|
" Last Change: 2011 Dec 25 by Thilo Six
|
|
|
|
" Details of the CWEB language can be found in the article by Donald E. Knuth
|
|
" and Silvio Levy, "The CWEB System of Structured Documentation", included as
|
|
" file "cwebman.tex" in the standard CWEB distribution, available for
|
|
" anonymous ftp at ftp://labrea.stanford.edu/pub/cweb/.
|
|
|
|
" TODO: Section names and C/C++ comments should be treated as TeX material.
|
|
" TODO: The current version switches syntax highlighting off for section
|
|
" TODO: names, and leaves C/C++ comments as such. (On the other hand,
|
|
" TODO: switching to TeX mode in C/C++ comments might be colour overkill.)
|
|
|
|
" quit when a syntax file was already loaded
|
|
if exists("b:current_syntax")
|
|
finish
|
|
endif
|
|
|
|
" For starters, read the TeX syntax; TeX syntax items are allowed at the top
|
|
" level in the CWEB syntax, e.g., in the preamble. In general, a CWEB source
|
|
" code can be seen as a normal TeX document with some C/C++ material
|
|
" interspersed in certain defined regions.
|
|
runtime! syntax/tex.vim
|
|
unlet b:current_syntax
|
|
|
|
" Read the C/C++ syntax too; C/C++ syntax items are treated as such in the
|
|
" C/C++ section of a CWEB chunk or in inner C/C++ context in "|...|" groups.
|
|
syntax include @webIncludedC <sfile>:p:h/cpp.vim
|
|
|
|
let s:cpo_save = &cpo
|
|
set cpo&vim
|
|
|
|
" Inner C/C++ context (ICC) should be quite simple as it's comprised of
|
|
" material in "|...|"; however the naive definition for this region would
|
|
" hickup at the innocious "\|" TeX macro. Note: For the time being we expect
|
|
" that an ICC begins either at the start of a line or after some white space.
|
|
syntax region webInnerCcontext start="\(^\|[ \t\~`(]\)|" end="|" contains=@webIncludedC,webSectionName,webRestrictedTeX,webIgnoredStuff
|
|
|
|
" Genuine C/C++ material. This syntactic region covers both the definition
|
|
" part and the C/C++ part of a CWEB section; it is ended by the TeX part of
|
|
" the next section.
|
|
syntax region webCpart start="@[dfscp<(]" end="@[ \*]" contains=@webIncludedC,webSectionName,webRestrictedTeX,webIgnoredStuff
|
|
|
|
" Section names contain C/C++ material only in inner context.
|
|
syntax region webSectionName start="@[<(]" end="@>" contains=webInnerCcontext contained
|
|
|
|
" The contents of "control texts" is not treated as TeX material, because in
|
|
" non-trivial cases this completely clobbers the syntax recognition. Instead,
|
|
" we highlight these elements as "strings".
|
|
syntax region webRestrictedTeX start="@[\^\.:t=q]" end="@>" oneline
|
|
|
|
" Double-@ means single-@, anywhere in the CWEB source. (This allows e-mail
|
|
" address <someone@@fsf.org> without going into C/C++ mode.)
|
|
syntax match webIgnoredStuff "@@"
|
|
|
|
" Define the default highlighting.
|
|
" Only when an item doesn't have highlighting yet
|
|
|
|
hi def link webRestrictedTeX String
|
|
|
|
|
|
let b:current_syntax = "cweb"
|
|
|
|
let &cpo = s:cpo_save
|
|
unlet s:cpo_save
|
|
" vim: ts=8
|
|
|
|
endif
|