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47 lines
2.1 KiB
47 lines
2.1 KiB
" Vim syntax file
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" Language: Parser Expression Grammars (PEG)
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" Maintainer: Gianni Chiappetta
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" Latest Revision: 2011-02-08
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if exists("b:current_syntax")
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finish
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endif
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syn match pegRuleIdentifier /^\a\+/ skipwhite nextgroup=pegSeperator
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syn match pegSeperator "<-" skipwhite contained nextgroup=pegExpression
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syn match pegSeperator "←" skipwhite contained nextgroup=pegExpression
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syn match pegExpression /.*/ contained skipwhite contains=pegDelimiter,pegGrouping,pegSpecial,pegRange,pegTerminal,pegOrderedChoice,pegNonTerminal,pegQuantifier
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syn match pegDelimiter /[§]/ contained display
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syn region pegGrouping matchgroup=pegDelimiter start=/(/ end=/)/ contained skipwhite keepend contains=pegExpression display
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syn match pegSpecial /[!&ϵ^]/ contained display
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syn match pegOrderedChoice /\// contained display
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syn region pegRange matchgroup=pegDelimiter start=/\[^/ start=/\[/ end=/\]/ contained skipwhite contains=pegRangeValue,pegUnicode display
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syn match pegRangeValue /\d\+-\d\+/ contained display
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syn match pegRangeValue /\a\+-\a\+/ contained display
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syn region pegTerminal matchgroup=pegDelimiter start=/"/ end=/"/ contained display
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syn region pegTerminal matchgroup=pegDelimiter start=/'/ end=/'/ contained display
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syn match pegUnicode /U+[A-F0-9]\{4,6}/ contained display
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syn match pegNonTerminal /\a+/ contained display
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syn match pegQuantifier /[+\*?]/ contained display
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syn match pegQuantifier /{\d\+,\d\+}/ contained display
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syn match pegQuantifier /{\d\+}/ contained display
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syn match pegComment /;.*$/ contains=pegTodo
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syn keyword pegTodo TODO FIXME XXX NOTE contained
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hi link pegRuleIdentifier Identifier
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hi link pegSeperator Conditional
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hi link pegDelimiter Delimiter
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hi link pegSpecial Special
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hi link pegOrderedChoice Conditional
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hi link pegComment Comment
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hi link pegRangeValue Constant
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hi link pegTerminal String
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hi link pegUnicode Constant
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hi link pegQuantifier Function
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hi link pegTodo Todo
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let b:current_syntax = "peg"
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