#ifndef SimpleArgumentCoder_h
#define SimpleArgumentCoder_h
#include "ArgumentDecoder.h"
#include "ArgumentEncoder.h"
#include <utility>
#include <wtf/Forward.h>
#include <wtf/HashMap.h>
#include <wtf/TypeTraits.h>
#include <wtf/Vector.h>
namespace CoreIPC {
template<typename T> struct SimpleArgumentCoder {
static void encode(ArgumentEncoder* encoder, const T& t)
{
encoder->encodeFixedLengthData(reinterpret_cast<const uint8_t*>(&t), sizeof(T), __alignof(T));
}
static bool decode(ArgumentDecoder* decoder, T& t)
{
return decoder->decodeFixedLengthData(reinterpret_cast<uint8_t*>(&t), sizeof(T), __alignof(T));
}
};
template<typename T, typename U> struct ArgumentCoder<std::pair<T, U> > {
static void encode(ArgumentEncoder* encoder, const std::pair<T, U>& pair)
{
encoder->encode(pair.first);
encoder->encode(pair.second);
}
static bool decode(ArgumentDecoder* decoder, std::pair<T, U>& pair)
{
T first;
if (!decoder->decode(first))
return false;
U second;
if (!decoder->decode(second))
return false;
pair.first = first;
pair.second = second;
return true;
}
};
template<bool fixedSizeElements, typename T> struct VectorArgumentCoder;
template<typename T> struct VectorArgumentCoder<false, T> {
static void encode(ArgumentEncoder* encoder, const Vector<T>& vector)
{
encoder->encodeUInt64(vector.size());
for (size_t i = 0; i < vector.size(); ++i)
encoder->encode(vector[i]);
}
static bool decode(ArgumentDecoder* decoder, Vector<T>& vector)
{
uint64_t size;
if (!decoder->decodeUInt64(size))
return false;
Vector<T> tmp;
for (size_t i = 0; i < size; ++i) {
T element;
if (!decoder->decode(element))
return false;
tmp.append(element);
}
tmp.shrinkToFit();
vector.swap(tmp);
return true;
}
};
template<typename T> struct VectorArgumentCoder<true, T> {
static void encode(ArgumentEncoder* encoder, const Vector<T>& vector)
{
encoder->encodeUInt64(vector.size());
encoder->encodeFixedLengthData(reinterpret_cast<const uint8_t*>(vector.data()), vector.size() * sizeof(T), __alignof(T));
}
static bool decode(ArgumentDecoder* decoder, Vector<T>& vector)
{
uint64_t size;
if (!decoder->decodeUInt64(size))
return false;
if (!decoder->bufferIsLargeEnoughToContain<T>(size)) {
decoder->markInvalid();
return false;
}
Vector<T> temp;
temp.resize(size);
decoder->decodeFixedLengthData(reinterpret_cast<uint8_t*>(temp.data()), size * sizeof(T), __alignof(T));
vector.swap(temp);
return true;
}
};
template<typename T> struct ArgumentCoder<Vector<T> > : VectorArgumentCoder<WTF::IsArithmetic<T>::value, T> { };
template<typename KeyArg, typename MappedArg, typename HashArg, typename KeyTraitsArg, typename MappedTraitsArg> struct ArgumentCoder<HashMap<KeyArg, MappedArg, HashArg, KeyTraitsArg, MappedTraitsArg> > {
typedef HashMap<KeyArg, MappedArg, HashArg, KeyTraitsArg, MappedTraitsArg> HashMapType;
static void encode(ArgumentEncoder* encoder, const HashMapType& hashMap)
{
encoder->encodeUInt64(hashMap.size());
for (typename HashMapType::const_iterator it = hashMap.begin(), end = hashMap.end(); it != end; ++it)
encoder->encode(*it);
}
static bool decode(ArgumentDecoder* decoder, HashMapType& hashMap)
{
uint64_t hashMapSize;
if (!decoder->decode(hashMapSize))
return false;
HashMapType tempHashMap;
for (uint64_t i = 0; i < hashMapSize; ++i) {
KeyArg key;
MappedArg value;
if (!decoder->decode(key))
return false;
if (!decoder->decode(value))
return false;
if (!tempHashMap.add(key, value).isNewEntry) {
decoder->markInvalid();
return false;
}
}
hashMap.swap(tempHashMap);
return true;
}
};
template<> struct ArgumentCoder<AtomicString> {
static void encode(ArgumentEncoder*, const AtomicString&);
static bool decode(ArgumentDecoder*, AtomicString&);
};
template<> struct ArgumentCoder<CString> {
static void encode(ArgumentEncoder*, const CString&);
static bool decode(ArgumentDecoder*, CString&);
};
template<> struct ArgumentCoder<String> {
static void encode(ArgumentEncoder*, const String&);
static bool decode(ArgumentDecoder*, String&);
};
}
#endif // SimpleArgumentCoder_h