import { Comment } from '../../tokenizer/index.js';

const ASTERISK = 0x002a; // U+002A ASTERISK (*)
const SOLIDUS = 0x002f; // U+002F SOLIDUS (/)

export const name = 'Comment';
export const structure = {
  value: String,
};

export function parse() {
  const start = this.tokenStart;
  let end = this.tokenEnd;

  this.eat(Comment);

  if (
    end - start + 2 >= 2 &&
    this.charCodeAt(end - 2) === ASTERISK &&
    this.charCodeAt(end - 1) === SOLIDUS
  ) {
    end -= 2;
  }

  return {
    type: 'Comment',
    loc: this.getLocation(start, this.tokenStart),
    value: this.substring(start + 2, end),
  };
}

export function generate(node) {
  this.token(Comment, '/*' + node.value + '*/');
}