refractor/lang/scala.js

Lightweight, robust, elegant virtual syntax highlighting using Prism

// @ts-nocheck
/**
 * @import {Refractor} from '../lib/core.js'
 */
import refractorJava from './java.js'
scala.displayName = 'scala'
scala.aliases = []

/** @param {Refractor} Prism */
export default function scala(Prism) {
  Prism.register(refractorJava)
  Prism.languages.scala = Prism.languages.extend('java', {
    'triple-quoted-string': {
      pattern: /"""[\s\S]*?"""/,
      greedy: true,
      alias: 'string'
    },
    string: {
      pattern: /("|')(?:\\.|(?!\1)[^\\\r\n])*\1/,
      greedy: true
    },
    keyword:
      /<-|=>|\b(?:abstract|case|catch|class|def|derives|do|else|enum|extends|extension|final|finally|for|forSome|given|if|implicit|import|infix|inline|lazy|match|new|null|object|opaque|open|override|package|private|protected|return|sealed|self|super|this|throw|trait|transparent|try|type|using|val|var|while|with|yield)\b/,
    number:
      /\b0x(?:[\da-f]*\.)?[\da-f]+|(?:\b\d+(?:\.\d*)?|\B\.\d+)(?:e\d+)?[dfl]?/i,
    builtin:
      /\b(?:Any|AnyRef|AnyVal|Boolean|Byte|Char|Double|Float|Int|Long|Nothing|Short|String|Unit)\b/,
    symbol: /'[^\d\s\\]\w*/
  })
  Prism.languages.insertBefore('scala', 'triple-quoted-string', {
    'string-interpolation': {
      pattern:
        /\b[a-z]\w*(?:"""(?:[^$]|\$(?:[^{]|\{(?:[^{}]|\{[^{}]*\})*\}))*?"""|"(?:[^$"\r\n]|\$(?:[^{]|\{(?:[^{}]|\{[^{}]*\})*\}))*")/i,
      greedy: true,
      inside: {
        id: {
          pattern: /^\w+/,
          greedy: true,
          alias: 'function'
        },
        escape: {
          pattern: /\\\$"|\$[$"]/,
          greedy: true,
          alias: 'symbol'
        },
        interpolation: {
          pattern: /\$(?:\w+|\{(?:[^{}]|\{[^{}]*\})*\})/,
          greedy: true,
          inside: {
            punctuation: /^\$\{?|\}$/,
            expression: {
              pattern: /[\s\S]+/,
              inside: Prism.languages.scala
            }
          }
        },
        string: /[\s\S]+/
      }
    }
  })
  delete Prism.languages.scala['class-name']
  delete Prism.languages.scala['function']
  delete Prism.languages.scala['constant']
}