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LibIPC+LibGfx: Templatize IPC encoding as well as decoding

Now most classes dictate how they are serialized and deserialized when
transmitted across LibIPC sockets. This also makes the IPC compiler
a bit simpler. :^)
This commit is contained in:
Andreas Kling 2020-05-12 18:05:43 +02:00
parent cba4880301
commit 3775983dfe
10 changed files with 83 additions and 45 deletions

View file

@ -136,4 +136,13 @@ bool Decoder::decode(Dictionary& dictionary)
return true;
}
void dongle() {
ByteBuffer buffer;
BufferStream stream(buffer);
Decoder d(stream);
Vector<String> x;
d.decode(x);
}
}

View file

@ -26,15 +26,19 @@
#pragma once
#include <AK/BufferStream.h>
#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>
bool decode(BufferStream&, T&)
inline bool decode(Decoder&, T&)
{
ASSERT_NOT_REACHED();
return false;
}
@ -64,6 +68,21 @@ public:
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;
}
private:
BufferStream& m_stream;
};

View file

@ -31,6 +31,13 @@
namespace IPC {
template<typename T>
bool encode(BufferStream&, T&)
{
ASSERT_NOT_REACHED();
return false;
}
class Encoder {
public:
explicit Encoder(MessageBuffer& buffer)
@ -53,6 +60,28 @@ public:
Encoder& operator<<(const String&);
Encoder& operator<<(const Dictionary&);
template<typename T>
Encoder& operator<<(const Vector<T>& vector)
{
*this << (u64)vector.size();
for (auto& value : vector)
*this << value;
return *this;
}
template<typename T>
Encoder& operator<<(const T& value)
{
encode(value);
return *this;
}
template<typename T>
void encode(const T& value)
{
IPC::encode(*this, value);
}
private:
MessageBuffer& m_buffer;
};