refractor/lang/chaiscript.js

Lightweight, robust, elegant virtual syntax highlighting using Prism

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

/** @param {Refractor} Prism */
export default function chaiscript(Prism) {
  Prism.register(refractorClike)
  Prism.register(refractorCpp)
  Prism.languages.chaiscript = Prism.languages.extend('clike', {
    string: {
      pattern: /(^|[^\\])'(?:[^'\\]|\\[\s\S])*'/,
      lookbehind: true,
      greedy: true
    },
    'class-name': [
      {
        // e.g. class Rectangle { ... }
        pattern: /(\bclass\s+)\w+/,
        lookbehind: true
      },
      {
        // e.g. attr Rectangle::height, def Rectangle::area() { ... }
        pattern: /(\b(?:attr|def)\s+)\w+(?=\s*::)/,
        lookbehind: true
      }
    ],
    keyword:
      /\b(?:attr|auto|break|case|catch|class|continue|def|default|else|finally|for|fun|global|if|return|switch|this|try|var|while)\b/,
    number: [Prism.languages.cpp.number, /\b(?:Infinity|NaN)\b/],
    operator:
      />>=?|<<=?|\|\||&&|:[:=]?|--|\+\+|[=!<>+\-*/%|&^]=?|[?~]|`[^`\r\n]{1,4}`/
  })
  Prism.languages.insertBefore('chaiscript', 'operator', {
    'parameter-type': {
      // e.g. def foo(int x, Vector y) {...}
      pattern: /([,(]\s*)\w+(?=\s+\w)/,
      lookbehind: true,
      alias: 'class-name'
    }
  })
  Prism.languages.insertBefore('chaiscript', 'string', {
    'string-interpolation': {
      pattern:
        /(^|[^\\])"(?:[^"$\\]|\\[\s\S]|\$(?!\{)|\$\{(?:[^{}]|\{(?:[^{}]|\{[^{}]*\})*\})*\})*"/,
      lookbehind: true,
      greedy: true,
      inside: {
        interpolation: {
          pattern:
            /((?:^|[^\\])(?:\\{2})*)\$\{(?:[^{}]|\{(?:[^{}]|\{[^{}]*\})*\})*\}/,
          lookbehind: true,
          inside: {
            'interpolation-expression': {
              pattern: /(^\$\{)[\s\S]+(?=\}$)/,
              lookbehind: true,
              inside: Prism.languages.chaiscript
            },
            'interpolation-punctuation': {
              pattern: /^\$\{|\}$/,
              alias: 'punctuation'
            }
          }
        },
        string: /[\s\S]+/
      }
    }
  })
}