76 lines
1.6 KiB
JavaScript
76 lines
1.6 KiB
JavaScript
/*
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Language: Augmented Backus-Naur Form
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Author: Alex McKibben <alex@nullscope.net>
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*/
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function(hljs) {
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var regexes = {
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ruleDeclaration: "^[a-zA-Z][a-zA-Z0-9-]*",
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unexpectedChars: "[!@#$^&',?+~`|:]"
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};
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var keywords = [
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"ALPHA",
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"BIT",
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"CHAR",
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"CR",
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"CRLF",
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"CTL",
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"DIGIT",
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"DQUOTE",
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"HEXDIG",
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"HTAB",
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"LF",
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"LWSP",
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"OCTET",
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"SP",
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"VCHAR",
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"WSP"
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];
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var commentMode = hljs.COMMENT(";", "$");
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var terminalBinaryMode = {
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className: "symbol",
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begin: /%b[0-1]+(-[0-1]+|(\.[0-1]+)+){0,1}/
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};
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var terminalDecimalMode = {
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className: "symbol",
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begin: /%d[0-9]+(-[0-9]+|(\.[0-9]+)+){0,1}/
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};
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var terminalHexadecimalMode = {
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className: "symbol",
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begin: /%x[0-9A-F]+(-[0-9A-F]+|(\.[0-9A-F]+)+){0,1}/,
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};
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var caseSensitivityIndicatorMode = {
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className: "symbol",
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begin: /%[si]/
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};
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var ruleDeclarationMode = {
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begin: regexes.ruleDeclaration + '\\s*=',
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returnBegin: true,
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end: /=/,
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relevance: 0,
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contains: [{className: "attribute", begin: regexes.ruleDeclaration}]
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};
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return {
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illegal: regexes.unexpectedChars,
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keywords: keywords.join(" "),
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contains: [
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ruleDeclarationMode,
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commentMode,
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terminalBinaryMode,
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terminalDecimalMode,
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terminalHexadecimalMode,
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caseSensitivityIndicatorMode,
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hljs.QUOTE_STRING_MODE,
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hljs.NUMBER_MODE
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]
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};
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}
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