| 1 | Prism.languages.prolog = {
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| 2 | // Syntax depends on the implementation
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| 3 | 'comment': {
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| 4 | pattern: /\/\*[\s\S]*?\*\/|%.*/,
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| 5 | greedy: true
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| 6 | },
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| 7 | // Depending on the implementation, strings may allow escaped newlines and quote-escape
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| 8 | 'string': {
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| 9 | pattern: /(["'])(?:\1\1|\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1(?!\1)/,
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| 10 | greedy: true
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| 11 | },
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| 12 | 'builtin': /\b(?:fx|fy|xf[xy]?|yfx?)\b/,
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| 13 | // FIXME: Should we list all null-ary predicates (not followed by a parenthesis) like halt, trace, etc.?
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| 14 | 'function': /\b[a-z]\w*(?:(?=\()|\/\d+)/,
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| 15 | 'number': /\b\d+(?:\.\d*)?/,
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| 16 | // Custom operators are allowed
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| 17 | 'operator': /[:\\=><\-?*@\/;+^|!$.]+|\b(?:is|mod|not|xor)\b/,
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| 18 | 'punctuation': /[(){}\[\],]/
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| 19 | };
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