Parentheses.js 693 B

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  1. import {
  2. LeftParenthesis,
  3. RightParenthesis
  4. } from '../../tokenizer/index.js';
  5. export const name = 'Parentheses';
  6. export const structure = {
  7. children: [[]]
  8. };
  9. export function parse(readSequence, recognizer) {
  10. const start = this.tokenStart;
  11. let children = null;
  12. this.eat(LeftParenthesis);
  13. children = readSequence.call(this, recognizer);
  14. if (!this.eof) {
  15. this.eat(RightParenthesis);
  16. }
  17. return {
  18. type: 'Parentheses',
  19. loc: this.getLocation(start, this.tokenStart),
  20. children
  21. };
  22. }
  23. export function generate(node) {
  24. this.token(LeftParenthesis, '(');
  25. this.children(node);
  26. this.token(RightParenthesis, ')');
  27. }