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serenity/Userland/Libraries/LibWeb/WebDriver/Response.h
Timothy Flynn 05f41382bb Userland: Properly define IPC::encode and IPC::decode specializations
In order to avoid the base encode/decode methods from being used (and
failing a static assertion), we must be sure to declare/define the
custom type implementations as template specializations.

After this, LibIPC is no longer sensitive to include order.
2022-11-15 13:25:51 -05:00

55 lines
1.5 KiB
C++

/*
* Copyright (c) 2022, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/JsonValue.h>
#include <AK/Variant.h>
#include <LibIPC/Forward.h>
#include <LibWeb/WebDriver/Error.h>
namespace Web::WebDriver {
// FIXME: Ideally, this could be `using Response = ErrorOr<JsonValue, Error>`, but that won't be
// default-constructible, which is a requirement for the generated IPC.
struct Response {
Response() = default;
Response(JsonValue&&);
Response(Error&&);
JsonValue& value() { return m_value_or_error.template get<JsonValue>(); }
JsonValue const& value() const { return m_value_or_error.template get<JsonValue>(); }
Error& error() { return m_value_or_error.template get<Error>(); }
Error const& error() const { return m_value_or_error.template get<Error>(); }
bool is_error() const { return m_value_or_error.template has<Error>(); }
JsonValue release_value() { return move(value()); }
Error release_error() { return move(error()); }
template<typename... Visitors>
decltype(auto) visit(Visitors&&... visitors) const
{
return m_value_or_error.visit(forward<Visitors>(visitors)...);
}
private:
// Note: Empty is only a possible state until the Response has been decoded by IPC.
Variant<Empty, JsonValue, Error> m_value_or_error;
};
}
namespace IPC {
template<>
bool encode(Encoder&, Web::WebDriver::Response const&);
template<>
ErrorOr<void> decode(Decoder&, Web::WebDriver::Response&);
}