2023-10-03 11:14:36 +08:00
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Prism.languages.elm = {
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'comment': /--.*|\{-[\s\S]*?-\}/,
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'char': {
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pattern: /'(?:[^\\'\r\n]|\\(?:[abfnrtv\\']|\d+|x[0-9a-fA-F]+|u\{[0-9a-fA-F]+\}))'/,
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greedy: true
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},
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'string': [
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{
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// Multiline strings are wrapped in triple ". Quotes may appear unescaped.
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pattern: /"""[\s\S]*?"""/,
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greedy: true
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},
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{
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pattern: /"(?:[^\\"\r\n]|\\.)*"/,
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greedy: true
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}
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],
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'import-statement': {
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// The imported or hidden names are not included in this import
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// statement. This is because we want to highlight those exactly like
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// we do for the names in the program.
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pattern: /(^[\t ]*)import\s+[A-Z]\w*(?:\.[A-Z]\w*)*(?:\s+as\s+(?:[A-Z]\w*)(?:\.[A-Z]\w*)*)?(?:\s+exposing\s+)?/m,
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lookbehind: true,
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inside: {
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'keyword': /\b(?:as|exposing|import)\b/
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}
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},
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'keyword': /\b(?:alias|as|case|else|exposing|if|in|infixl|infixr|let|module|of|then|type)\b/,
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// These are builtin variables only. Constructors are highlighted later as a constant.
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'builtin': /\b(?:abs|acos|always|asin|atan|atan2|ceiling|clamp|compare|cos|curry|degrees|e|flip|floor|fromPolar|identity|isInfinite|isNaN|logBase|max|min|negate|never|not|pi|radians|rem|round|sin|sqrt|tan|toFloat|toPolar|toString|truncate|turns|uncurry|xor)\b/,
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// decimal integers and floating point numbers | hexadecimal integers
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'number': /\b(?:\d+(?:\.\d+)?(?:e[+-]?\d+)?|0x[0-9a-f]+)\b/i,
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// Most of this is needed because of the meaning of a single '.'.
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// If it stands alone freely, it is the function composition.
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// It may also be a separator between a module name and an identifier => no
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// operator. If it comes together with other special characters it is an
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// operator too.
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// Valid operator characters in 0.18: +-/*=.$<>:&|^?%#@~!
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// Ref: https://groups.google.com/forum/#!msg/elm-dev/0AHSnDdkSkQ/E0SVU70JEQAJ
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'operator': /\s\.\s|[+\-/*=.$<>:&|^?%#@~!]{2,}|[+\-/*=$<>:&|^?%#@~!]/,
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// In Elm, nearly everything is a variable, do not highlight these.
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'hvariable': /\b(?:[A-Z]\w*\.)*[a-z]\w*\b/,
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'constant': /\b(?:[A-Z]\w*\.)*[A-Z]\w*\b/,
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'punctuation': /[{}[\]|(),.:]/
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};
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