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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Forward.h>
#include <AK/NumericLimits.h>
#include <AK/String.h>
#include <LibIPC/Forward.h>
#include <LibIPC/Message.h>
namespace IPC {
template<typename T>
inline bool decode(Decoder&, T&)
{
ASSERT_NOT_REACHED();
return false;
}
class Decoder {
public:
explicit Decoder(BufferStream& stream)
: m_stream(stream)
{
}
bool decode(bool&);
bool decode(u8&);
bool decode(u16&);
bool decode(u32&);
bool decode(u64&);
bool decode(i8&);
bool decode(i16&);
bool decode(i32&);
bool decode(i64&);
bool decode(float&);
bool decode(String&);
bool decode(URL&);
bool decode(Dictionary&);
template<typename T>
bool decode(T& value)
{
return IPC::decode(*this, value);
}
template<typename T>
bool decode(Vector<T>& vector)
{
u64 size;
if (!decode(size) || size > NumericLimits<i32>::max())
return false;
for (size_t i = 0; i < size; ++i) {
T value;
if (!decode(value))
return false;
vector.append(move(value));
}
return true;
}
template<typename T>
bool decode(Optional<T>& optional)
{
bool has_value;
if (!decode(has_value))
return false;
if (!has_value) {
optional = {};
return true;
}
T value;
if (!decode(value))
return false;
optional = move(value);
return true;
}
private:
BufferStream& m_stream;
};
}
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