Method get_safe_token

src/constructor_parser.rs:118–127

Ref: https://wicg.github.io/urlpattern/#get-a-safe-token

(&self, index: usize)

  // Ref: https://wicg.github.io/urlpattern/#get-a-safe-token
  fn get_safe_token(&self, index: usize) -> &Token {
    if index < self.token_list.len() {
      &self.token_list[index]
    } else {
      assert!(!self.token_list.is_empty());
      let token = self.token_list.last().unwrap();
      assert!(token.kind == TokenType::End);
      token
    }
  }

  // Ref: https://wicg.github.io/urlpattern/#change-state
  fn change_state(