Method is_valid_ascii_identifier

core/string/ustring.cpp:4598–4618

}

bool String::is_valid_ascii_identifier() const {
	int len = length();

	if (len == 0) {
		return false;
	}

	if (is_digit(operator[](0))) {
		return false;
	}

	const char32_t *str = &operator[](0);

	for (int i = 0; i < len; i++) {
		if (!is_ascii_identifier_char(str[i])) {
			return false;
		}
	}

	return true;
}

bool String::is_valid_unicode_identifier() const {
	const char32_t *str = ptr();