refractor/lang/squirrel.js

Lightweight, robust, elegant virtual syntax highlighting using Prism

// @ts-nocheck
/**
 * @import {Refractor} from '../lib/core.js'
 */
import refractorClike from './clike.js'
squirrel.displayName = 'squirrel'
squirrel.aliases = []

/** @param {Refractor} Prism */
export default function squirrel(Prism) {
  Prism.register(refractorClike)
  Prism.languages.squirrel = Prism.languages.extend('clike', {
    comment: [
      Prism.languages.clike['comment'][0],
      {
        pattern: /(^|[^\\:])(?:\/\/|#).*/,
        lookbehind: true,
        greedy: true
      }
    ],
    string: {
      pattern: /(^|[^\\"'@])(?:@"(?:[^"]|"")*"(?!")|"(?:[^\\\r\n"]|\\.)*")/,
      lookbehind: true,
      greedy: true
    },
    'class-name': {
      pattern: /(\b(?:class|enum|extends|instanceof)\s+)\w+(?:\.\w+)*/,
      lookbehind: true,
      inside: {
        punctuation: /\./
      }
    },
    keyword:
      /\b(?:__FILE__|__LINE__|base|break|case|catch|class|clone|const|constructor|continue|default|delete|else|enum|extends|for|foreach|function|if|in|instanceof|local|null|resume|return|static|switch|this|throw|try|typeof|while|yield)\b/,
    number: /\b(?:0x[0-9a-fA-F]+|\d+(?:\.(?:\d+|[eE][+-]?\d+))?)\b/,
    operator: /\+\+|--|<=>|<[-<]|>>>?|&&?|\|\|?|[-+*/%!=<>]=?|[~^]|::?/,
    punctuation: /[(){}\[\],;.]/
  })
  Prism.languages.insertBefore('squirrel', 'string', {
    char: {
      pattern: /(^|[^\\"'])'(?:[^\\']|\\(?:[xuU][0-9a-fA-F]{0,8}|[\s\S]))'/,
      lookbehind: true,
      greedy: true
    }
  })
  Prism.languages.insertBefore('squirrel', 'operator', {
    'attribute-punctuation': {
      pattern: /<\/|\/>/,
      alias: 'important'
    },
    lambda: {
      pattern: /@(?=\()/,
      alias: 'operator'
    }
  })
}