Method is_valid_unicode_identifier

core/string/ustring.cpp:4620–4638

}

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

	if (len == 0) {
		return false; // Empty string.
	}

	if (!is_unicode_identifier_start(str[0])) {
		return false;
	}

	for (int i = 1; i < len; i++) {
		if (!is_unicode_identifier_continue(str[i])) {
			return false;
		}
	}
	return true;
}

bool String::is_valid_string() const {
	int l = length();