#ifndef SimpleArgumentCoder_h
#define SimpleArgumentCoder_h
#include "ArgumentDecoder.h"
#include "ArgumentEncoder.h"
#include <utility>
#include <wtf/Forward.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/Optional.h>
#include <wtf/Vector.h>
namespace IPC {
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> struct ArgumentCoder<WTF::Optional<T>> {
static void encode(ArgumentEncoder& encoder, const WTF::Optional<T>& optional)
{
if (!optional) {
encoder << false;
return;
}
encoder << true;
encoder << optional.value();
}
static bool decode(ArgumentDecoder& decoder, WTF::Optional<T>& optional)
{
bool isEngaged;
if (!decoder.decode(isEngaged))
return false;
if (!isEngaged) {
optional = Nullopt;
return true;
}
T value;
if (!decoder.decode(value))
return false;
optional = WTF::move(value);
return true;
}
};
template<typename T, typename U> struct ArgumentCoder<std::pair<T, U>> {
static void encode(ArgumentEncoder& encoder, const std::pair<T, U>& pair)
{
encoder << pair.first << 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<typename KeyType, typename ValueType> struct ArgumentCoder<WTF::KeyValuePair<KeyType, ValueType>> {
static void encode(ArgumentEncoder& encoder, const WTF::KeyValuePair<KeyType, ValueType>& pair)
{
encoder << pair.key << pair.value;
}
static bool decode(ArgumentDecoder& decoder, WTF::KeyValuePair<KeyType, ValueType>& pair)
{
KeyType key;
if (!decoder.decode(key))
return false;
ValueType value;
if (!decoder.decode(value))
return false;
pair.key = key;
pair.value = value;
return true;
}
};
template<bool fixedSizeElements, typename T, size_t inlineCapacity> struct VectorArgumentCoder;
template<typename T, size_t inlineCapacity> struct VectorArgumentCoder<false, T, inlineCapacity> {
static void encode(ArgumentEncoder& encoder, const Vector<T, inlineCapacity>& vector)
{
encoder << static_cast<uint64_t>(vector.size());
for (size_t i = 0; i < vector.size(); ++i)
encoder << vector[i];
}
static bool decode(ArgumentDecoder& decoder, Vector<T, inlineCapacity>& vector)
{
uint64_t size;
if (!decoder.decode(size))
return false;
Vector<T, inlineCapacity> tmp;
for (size_t i = 0; i < size; ++i) {
T element;
if (!decoder.decode(element))
return false;
tmp.append(WTF::move(element));
}
tmp.shrinkToFit();
vector.swap(tmp);
return true;
}
};
template<typename T, size_t inlineCapacity> struct VectorArgumentCoder<true, T, inlineCapacity> {
static void encode(ArgumentEncoder& encoder, const Vector<T, inlineCapacity>& vector)
{
encoder << static_cast<uint64_t>(vector.size());
encoder.encodeFixedLengthData(reinterpret_cast<const uint8_t*>(vector.data()), vector.size() * sizeof(T), alignof(T));
}
static bool decode(ArgumentDecoder& decoder, Vector<T, inlineCapacity>& vector)
{
uint64_t size;
if (!decoder.decode(size))
return false;
if (!decoder.bufferIsLargeEnoughToContain<T>(size)) {
decoder.markInvalid();
return false;
}
Vector<T, inlineCapacity> 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, size_t inlineCapacity> struct ArgumentCoder<Vector<T, inlineCapacity>> : VectorArgumentCoder<std::is_arithmetic<T>::value, T, inlineCapacity> { };
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 << static_cast<uint64_t>(hashMap.size());
for (typename HashMapType::const_iterator it = hashMap.begin(), end = hashMap.end(); it != end; ++it)
encoder << *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<typename KeyArg, typename HashArg, typename KeyTraitsArg> struct ArgumentCoder<HashSet<KeyArg, HashArg, KeyTraitsArg>> {
typedef HashSet<KeyArg, HashArg, KeyTraitsArg> HashSetType;
static void encode(ArgumentEncoder& encoder, const HashSetType& hashSet)
{
encoder << static_cast<uint64_t>(hashSet.size());
for (typename HashSetType::const_iterator it = hashSet.begin(), end = hashSet.end(); it != end; ++it)
encoder << *it;
}
static bool decode(ArgumentDecoder& decoder, HashSetType& hashSet)
{
uint64_t hashSetSize;
if (!decoder.decode(hashSetSize))
return false;
HashSetType tempHashSet;
for (uint64_t i = 0; i < hashSetSize; ++i) {
KeyArg key;
if (!decoder.decode(key))
return false;
if (!tempHashSet.add(key).isNewEntry) {
decoder.markInvalid();
return false;
}
}
hashSet.swap(tempHashSet);
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 // ArgumentCoders_h