Method parse_get_node

modules/gdscript/gdscript_parser.cpp:3473–3580

}

GDScriptParser::ExpressionNode *GDScriptParser::parse_get_node(ExpressionNode *p_previous_operand, bool p_can_assign) {
	// We want code completion after a DOLLAR even if the current code is invalid.
	make_completion_context(COMPLETION_GET_NODE, nullptr, -1);

	if (!current.is_node_name() && !check(GDScriptTokenizer::Token::LITERAL) && !check(GDScriptTokenizer::Token::SLASH) && !check(GDScriptTokenizer::Token::PERCENT)) {
		push_error(vformat(R"(Expected node path as string or identifier after "%s".)", previous.get_name()));
		return nullptr;
	}

	if (check(GDScriptTokenizer::Token::LITERAL)) {
		if (current.literal.get_type() != Variant::STRING) {
			push_error(vformat(R"(Expected node path as string or identifier after "%s".)", previous.get_name()));
			return nullptr;
		}
	}

	GetNodeNode *get_node = alloc_node<GetNodeNode>();

	// Store the last item in the path so the parser knows what to expect.
	// Allow allows more specific error messages.
	enum PathState {
		PATH_STATE_START,
		PATH_STATE_SLASH,
		PATH_STATE_PERCENT,
		PATH_STATE_NODE_NAME,
	} path_state = PATH_STATE_START;

	if (previous.type == GDScriptTokenizer::Token::DOLLAR) {
		// Detect initial slash, which will be handled in the loop if it matches.
		match(GDScriptTokenizer::Token::SLASH);
	} else {
		get_node->use_dollar = false;
	}

	int context_argument = 0;

	do {
		if (previous.type == GDScriptTokenizer::Token::PERCENT) {
			if (path_state != PATH_STATE_START && path_state != PATH_STATE_SLASH) {
				push_error(R"("%" is only valid in the beginning of a node name (either after "$" or after "/"))");
				complete_extents(get_node);
				return nullptr;
			}

			get_node->full_path += "%";

			path_state = PATH_STATE_PERCENT;
		} else if (previous.type == GDScriptTokenizer::Token::SLASH) {
			if (path_state != PATH_STATE_START && path_state != PATH_STATE_NODE_NAME) {
				push_error(R"("/" is only valid at the beginning of the path or after a node name.)");
				complete_extents(get_node);
				return nullptr;
			}

			get_node->full_path += "/";

			path_state = PATH_STATE_SLASH;
		}