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Prism.languages.elm = {
comment: /--.*|\{-[\s\S]*?-\}/,
char: {
pattern:
/'(?:[^\\'\r\n]|\\(?:[abfnrtv\\']|\d+|x[0-9a-fA-F]+|u\{[0-9a-fA-F]+\}))'/,
greedy: true,
},
string: [
{
// Multiline strings are wrapped in triple ". Quotes may appear unescaped.
pattern: /"""[\s\S]*?"""/,
greedy: true,
},
{
pattern: /"(?:[^\\"\r\n]|\\.)*"/,
greedy: true,
},
],
'import-statement': {
// The imported or hidden names are not included in this import
// statement. This is because we want to highlight those exactly like
// we do for the names in the program.
pattern:
/(^[\t ]*)import\s+[A-Z]\w*(?:\.[A-Z]\w*)*(?:\s+as\s+(?:[A-Z]\w*)(?:\.[A-Z]\w*)*)?(?:\s+exposing\s+)?/m,
lookbehind: true,
inside: {
keyword: /\b(?:as|exposing|import)\b/,
},
},
keyword:
/\b(?:alias|as|case|else|exposing|if|in|infixl|infixr|let|module|of|then|type)\b/,
// These are builtin variables only. Constructors are highlighted later as a constant.
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/,
// decimal integers and floating point numbers | hexadecimal integers
number: /\b(?:\d+(?:\.\d+)?(?:e[+-]?\d+)?|0x[0-9a-f]+)\b/i,
// Most of this is needed because of the meaning of a single '.'.
// If it stands alone freely, it is the function composition.
// It may also be a separator between a module name and an identifier => no
// operator. If it comes together with other special characters it is an
// operator too.
// Valid operator characters in 0.18: +-/*=.$<>:&|^?%#@~!
// Ref: https://groups.google.com/forum/#!msg/elm-dev/0AHSnDdkSkQ/E0SVU70JEQAJ
operator: /\s\.\s|[+\-/*=.$<>:&|^?%#@~!]{2,}|[+\-/*=$<>:&|^?%#@~!]/,
// In Elm, nearly everything is a variable, do not highlight these.
hvariable: /\b(?:[A-Z]\w*\.)*[a-z]\w*\b/,
constant: /\b(?:[A-Z]\w*\.)*[A-Z]\w*\b/,
punctuation: /[{}[\]|(),.:]/,
};
|
