mirror of https://github.com/jkjoy/sunpeiwen.git
83 lines
1.4 KiB
JavaScript
83 lines
1.4 KiB
JavaScript
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/*
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Language: Augmented Backus-Naur Form
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Author: Alex McKibben <alex@nullscope.net>
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Website: https://tools.ietf.org/html/rfc5234
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Audit: 2020
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*/
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/** @type LanguageFn */
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function abnf(hljs) {
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const regex = hljs.regex;
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const IDENT = /^[a-zA-Z][a-zA-Z0-9-]*/;
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const 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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const COMMENT = hljs.COMMENT(/;/, /$/);
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const TERMINAL_BINARY = {
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scope: "symbol",
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match: /%b[0-1]+(-[0-1]+|(\.[0-1]+)+)?/
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};
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const TERMINAL_DECIMAL = {
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scope: "symbol",
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match: /%d[0-9]+(-[0-9]+|(\.[0-9]+)+)?/
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};
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const TERMINAL_HEXADECIMAL = {
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scope: "symbol",
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match: /%x[0-9A-F]+(-[0-9A-F]+|(\.[0-9A-F]+)+)?/
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};
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const CASE_SENSITIVITY = {
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scope: "symbol",
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match: /%[si](?=".*")/
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};
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const RULE_DECLARATION = {
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scope: "attribute",
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match: regex.concat(IDENT, /(?=\s*=)/)
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};
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const ASSIGNMENT = {
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scope: "operator",
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match: /=\/?/
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};
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return {
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name: 'Augmented Backus-Naur Form',
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illegal: /[!@#$^&',?+~`|:]/,
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keywords: KEYWORDS,
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contains: [
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ASSIGNMENT,
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RULE_DECLARATION,
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COMMENT,
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TERMINAL_BINARY,
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TERMINAL_DECIMAL,
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TERMINAL_HEXADECIMAL,
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CASE_SENSITIVITY,
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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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export { abnf as default };
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