Method _make_static_initializer

modules/gdscript/gdscript_compiler.cpp:2553–2685

}

GDScriptFunction *GDScriptCompiler::_make_static_initializer(Error &r_error, GDScript *p_script, const GDScriptParser::ClassNode *p_class) {
	r_error = OK;
	CodeGen codegen;
	codegen.generator = memnew(GDScriptByteCodeGenerator);

	codegen.class_node = p_class;
	codegen.script = p_script;

	StringName func_name = SNAME("@static_initializer");
	bool is_static = true;
	Variant rpc_config;
	GDScriptDataType return_type;
	return_type.has_type = true;
	return_type.kind = GDScriptDataType::BUILTIN;
	return_type.builtin_type = Variant::NIL;

	codegen.function_name = func_name;
	codegen.is_static = is_static;
	codegen.generator->write_start(p_script, func_name, is_static, rpc_config, return_type);

	// The static initializer is always called on the same class where the static variables are defined,
	// so the CLASS address (current class) can be used instead of `codegen.add_constant(p_script)`.
	GDScriptCodeGenerator::Address class_addr(GDScriptCodeGenerator::Address::CLASS);

	// Initialize the default values for typed variables before anything.
	// This avoids crashes if they are accessed with validated calls before being properly initialized.
	// It may happen with out-of-order access or with `@onready` variables.
	for (const GDScriptParser::ClassNode::Member &member : p_class->members) {
		if (member.type != GDScriptParser::ClassNode::Member::VARIABLE) {
			continue;
		}

		const GDScriptParser::VariableNode *field = member.variable;
		if (!field->is_static) {
			continue;
		}

		GDScriptDataType field_type = _gdtype_from_datatype(field->get_datatype(), codegen.script);
		if (field_type.has_type) {
			codegen.generator->write_newline(field->start_line);

			if (field_type.builtin_type == Variant::ARRAY && field_type.has_container_element_type(0)) {
				GDScriptCodeGenerator::Address temp = codegen.add_temporary(field_type);
				codegen.generator->write_construct_typed_array(temp, field_type.get_container_element_type(0), Vector<GDScriptCodeGenerator::Address>());
				codegen.generator->write_set_static_variable(temp, class_addr, p_script->static_variables_indices[field->identifier->name].index);
				codegen.generator->pop_temporary();
			} else if (field_type.builtin_type == Variant::DICTIONARY && field_type.has_container_element_types()) {
				GDScriptCodeGenerator::Address temp = codegen.add_temporary(field_type);
				codegen.generator->write_construct_typed_dictionary(temp, field_type.get_container_element_type_or_variant(0),
						field_type.get_container_element_type_or_variant(1), Vector<GDScriptCodeGenerator::Address>());
				codegen.generator->write_set_static_variable(temp, class_addr, p_script->static_variables_indices[field->identifier->name].index);
				codegen.generator->pop_temporary();
			} else if (field_type.kind == GDScriptDataType::BUILTIN) {
				GDScriptCodeGenerator::Address temp = codegen.add_temporary(field_type);
				codegen.generator->write_construct(temp, field_type.builtin_type, Vector<GDScriptCodeGenerator::Address>());
				codegen.generator->write_set_static_variable(temp, class_addr, p_script->static_variables_indices[field->identifier->name].index);
				codegen.generator->pop_temporary();
			}