Method parse_define_var

sources/instance/instance.cpp:251–276

	}

	void instance_type::parse_define_var(tree_type<token_base *>::iterator it, bool constant, bool link)
	{
		if (it.data()->get_type() == token_types::parallel) {
			auto &parallel_list = static_cast<token_parallel *>(it.data())->get_parallel();
			for (auto &t : parallel_list)
				parse_define_var(t.root(), constant, link);
		}
		else {
			token_base *root = it.data();
			switch (static_cast<token_signal *>(root)->get_signal()) {
			case signal_types::asi_: {
				const var &val = constant ? static_cast<token_value *>(it.right().data())->get_value() : parse_expr(it.right());
				storage.add_var_no_return(static_cast<token_id *>(it.left().data())->get_id(),
				                          constant || link ? val : copy(val),
				                          constant);
				break;
			}
			case signal_types::bind_: {
				parse_define_structured_binding(it, constant, link);
				break;
			}
			default:
				throw runtime_error("Wrong grammar for variable definition(6).");
			}
		}
	}

	void
	instance_type::check_define_structured_binding(tree_type<token_base *>::iterator it, bool regist)