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68 lines
2.3 KiB
68 lines
2.3 KiB
// https://smlfamily.github.io/sml97-defn.pdf |
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// https://people.mpi-sws.org/~rossberg/sml.html |
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(function (Prism) { |
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var keywords = /\b(?:abstype|and|andalso|as|case|datatype|do|else|end|eqtype|exception|fn|fun|functor|handle|if|in|include|infix|infixr|let|local|nonfix|of|op|open|orelse|raise|rec|sharing|sig|signature|struct|structure|then|type|val|where|while|with|withtype)\b/i; |
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Prism.languages.sml = { |
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// allow one level of nesting |
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'comment': /\(\*(?:[^*(]|\*(?!\))|\((?!\*)|\(\*(?:[^*(]|\*(?!\))|\((?!\*))*\*\))*\*\)/, |
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'string': { |
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pattern: /#?"(?:[^"\\]|\\.)*"/, |
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greedy: true |
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}, |
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'class-name': [ |
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{ |
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// This is only an approximation since the real grammar is context-free |
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// |
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// Why the main loop so complex? |
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// The main loop is approximately the same as /(?:\s*(?:[*,]|->)\s*<TERMINAL>)*/ which is, obviously, a lot |
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// simpler. The difference is that if a comma is the last iteration of the loop, then the terminal must be |
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// followed by a long identifier. |
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pattern: RegExp( |
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/((?:^|[^:]):\s*)<TERMINAL>(?:\s*(?:(?:\*|->)\s*<TERMINAL>|,\s*<TERMINAL>(?:(?=<NOT-LAST>)|(?!<NOT-LAST>)\s+<LONG-ID>)))*/.source |
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.replace(/<NOT-LAST>/g, function () { return /\s*(?:[*,]|->)/.source; }) |
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.replace(/<TERMINAL>/g, function () { |
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return /(?:'[\w']*|<LONG-ID>|\((?:[^()]|\([^()]*\))*\)|\{(?:[^{}]|\{[^{}]*\})*\})(?:\s+<LONG-ID>)*/.source; |
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}) |
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.replace(/<LONG-ID>/g, function () { return /(?!<KEYWORD>)[a-z\d_][\w'.]*/.source; }) |
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.replace(/<KEYWORD>/g, function () { return keywords.source; }), |
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'i' |
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), |
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lookbehind: true, |
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greedy: true, |
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inside: null // see below |
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}, |
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{ |
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pattern: /((?:^|[^\w'])(?:datatype|exception|functor|signature|structure|type)\s+)[a-z_][\w'.]*/i, |
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lookbehind: true |
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} |
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], |
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'function': { |
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pattern: /((?:^|[^\w'])fun\s+)[a-z_][\w'.]*/i, |
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lookbehind: true |
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}, |
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'keyword': keywords, |
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'variable': { |
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pattern: /(^|[^\w'])'[\w']*/, |
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lookbehind: true, |
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}, |
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'number': /~?\b(?:\d+(?:\.\d+)?(?:e~?\d+)?|0x[\da-f]+)\b/i, |
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'word': { |
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pattern: /\b0w(?:\d+|x[\da-f]+)\b/i, |
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alias: 'constant' |
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}, |
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'boolean': /\b(?:false|true)\b/i, |
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'operator': /\.\.\.|:[>=:]|=>?|->|[<>]=?|[!+\-*/^#|@~]/, |
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'punctuation': /[(){}\[\].:,;]/ |
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}; |
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Prism.languages.sml['class-name'][0].inside = Prism.languages.sml; |
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Prism.languages.smlnj = Prism.languages.sml; |
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}(Prism));
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