" Vim compiler file

" Language: abnf

" Maintainer: A4-Tacks <wdsjxhno1001@163.com>

" Last Change: 2025 Mar 05

" Upstream: https://github.com/A4-Tacks/abnf.vim

" Implementing RFC-5234, RFC-7405

if exists('b:current_syntax')

finish

endif

syn case ignore

syn match abnfError /[<>"]/

syn match abnfComment /;.*/

syn match abnfOption /[[/\]]/

syn region abnfString start=/\(%[si]\)\="/ end=/"/ oneline

syn region abnfProse start=/</ end=/>/ oneline

syn match abnfNumVal /\v\%b[01]+%(%(\.[01]+)+|-[01]+)=>/

syn match abnfNumVal /\v\%d\d+%(%(\.\d+)+|-\d+)=>/

syn match abnfNumVal /\v\%x[0-9a-f]+%(%(\.[0-9a-f]+)+|-[0-9a-f]+)=>/

syn match abnfRepeat /\v%(%(<\d+)=\*\d*|<\d+ =)\ze[^ \t\r\n0-9*/)\]]/

hi def link abnfError Error

hi def link abnfComment Comment

hi def link abnfOption PreProc

hi def link abnfString String

hi def link abnfProse String

hi def link abnfNumVal Number

hi def link abnfRepeat Repeat

" vim:noet:ts=8:sts=8:nowrap