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/*
* Copyright (C) 2013 University of Washington. All rights reserved.
* Copyright (C) 2014 Apple Inc. 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.
*/
#ifndef EncodedValue_h
#define EncodedValue_h
#if ENABLE(WEB_REPLAY)
#include "InspectorValues.h"
#include <wtf/Forward.h>
#include <wtf/Vector.h>
namespace JSC {
class NondeterministicInputBase;
template<typename T> struct EncodingTraits;
class EncodedValue final {
public:
explicit EncodedValue(PassRefPtr<Inspector::InspectorValue> value)
: m_value(value) { }
EncodedValue()
: m_value(nullptr) { }
static EncodedValue createObject()
{
return EncodedValue(Inspector::InspectorObject::create());
}
static EncodedValue createArray()
{
return EncodedValue(Inspector::InspectorArray::create());
}
static EncodedValue createString(const String& value)
{
return EncodedValue(Inspector::InspectorString::create(value));
}
static EncodedValue createString(const char* value)
{
return EncodedValue(Inspector::InspectorString::create(value));
}
template<typename T>
void put(const String&, const typename EncodingTraits<T>::DecodedType&);
template<typename T>
void append(const typename EncodingTraits<T>::DecodedType&);
template<typename T> bool get(const String&, typename EncodingTraits<T>::DecodedType&);
template<typename T> bool get(const String&, std::unique_ptr<typename EncodingTraits<T>::DecodedType>&);
template<typename T> T convertTo();
JS_EXPORT_PRIVATE PassRefPtr<Inspector::InspectorObject> asObject();
JS_EXPORT_PRIVATE PassRefPtr<Inspector::InspectorArray> asArray();
private:
RefPtr<Inspector::InspectorValue> m_value;
};
template<> JS_EXPORT_PRIVATE bool EncodedValue::convertTo<bool>();
template<> JS_EXPORT_PRIVATE double EncodedValue::convertTo<double>();
template<> JS_EXPORT_PRIVATE float EncodedValue::convertTo<float>();
template<> JS_EXPORT_PRIVATE int32_t EncodedValue::convertTo<int32_t>();
template<> JS_EXPORT_PRIVATE int64_t EncodedValue::convertTo<int64_t>();
template<> JS_EXPORT_PRIVATE uint32_t EncodedValue::convertTo<uint32_t>();
template<> JS_EXPORT_PRIVATE uint64_t EncodedValue::convertTo<uint64_t>();
template<> JS_EXPORT_PRIVATE String EncodedValue::convertTo<String>();
template<typename T>
struct EncodingTraits {
typedef T DecodedType;
static EncodedValue encodeValue(const DecodedType&);
static bool decodeValue(EncodedValue&, DecodedType&);
static bool decodeValue(EncodedValue&, std::unique_ptr<DecodedType>&);
};
template<typename T, size_t inlineCapacity, typename OverflowHandler>
struct EncodingTraits<Vector<T, inlineCapacity, OverflowHandler>> {
typedef Vector<typename EncodingTraits<T>::DecodedType, inlineCapacity, OverflowHandler> DecodedType;
static EncodedValue encodeValue(const DecodedType& vectorOfValues)
{
EncodedValue encodedVector = EncodedValue::createArray();
for (const typename EncodingTraits<T>::DecodedType& value : vectorOfValues)
encodedVector.append<T>(value);
return WTF::move(encodedVector);
}
static bool decodeValue(EncodedValue& encodedVector, DecodedType& decodedValue)
{
RefPtr<Inspector::InspectorArray> inspectorArray = encodedVector.asArray();
decodedValue = Vector<typename EncodingTraits<T>::DecodedType, inlineCapacity, OverflowHandler>(inspectorArray->length());
for (size_t i = 0; i < inspectorArray->length(); ++i) {
EncodedValue encodedElement(inspectorArray->get(i));
if (!EncodingTraits<T>::decodeValue(encodedElement, decodedValue.at(i)))
return false;
}
return true;
}
};
template<> struct EncodingTraits<EncodedValue> {
typedef EncodedValue DecodedType;
// We should never attempt to decode or encode an encoded value,
// so encodeValue and decodeValue are intentionally omitted here.
};
// Specialize byte vectors to use base64 encoding.
template<> struct EncodingTraits<Vector<char>> {
typedef Vector<char> DecodedType;
static EncodedValue encodeValue(const DecodedType&);
static bool decodeValue(EncodedValue&, DecodedType&);
};
template<typename T>
struct ScalarEncodingTraits {
typedef T DecodedType;
static JS_EXPORT_PRIVATE EncodedValue encodeValue(const DecodedType& decodedValue);
static bool decodeValue(EncodedValue& encodedValue, DecodedType& decodedValue)
{
decodedValue = encodedValue.convertTo<DecodedType>();
return true;
}
};
template<> struct EncodingTraits<bool> : public ScalarEncodingTraits<bool> { };
template<> struct EncodingTraits<double> : public ScalarEncodingTraits<double> { };
template<> struct EncodingTraits<float> : public ScalarEncodingTraits<float> { };
template<> struct EncodingTraits<int32_t> : public ScalarEncodingTraits<int32_t> { };
template<> struct EncodingTraits<int64_t> : public ScalarEncodingTraits<int64_t> { };
template<> struct EncodingTraits<uint32_t> : public ScalarEncodingTraits<uint32_t> { };
template<> struct EncodingTraits<uint64_t> : public ScalarEncodingTraits<uint64_t> { };
template<> struct EncodingTraits<String> : public ScalarEncodingTraits<String> {
static EncodedValue encodeValue(const String& value)
{
return EncodedValue::createString(value);
}
};
// Base cases for loading and storing values.
template<> JS_EXPORT_PRIVATE
void EncodedValue::put<EncodedValue>(const String& key, const typename EncodingTraits<EncodedValue>::DecodedType&);
template<> JS_EXPORT_PRIVATE
void EncodedValue::append<EncodedValue>(const typename EncodingTraits<EncodedValue>::DecodedType&);
template<> JS_EXPORT_PRIVATE
bool EncodedValue::get<EncodedValue>(const String& key, typename EncodingTraits<EncodedValue>::DecodedType&);
// Load and store types with an accompanying EncodingTraits implementation.
template<typename T>
void EncodedValue::put(const String& key, const typename EncodingTraits<T>::DecodedType& value)
{
EncodedValue encodedValue = EncodingTraits<T>::encodeValue(value);
put<EncodedValue>(key, encodedValue);
}
template<typename T>
void EncodedValue::append(const typename EncodingTraits<T>::DecodedType& value)
{
EncodedValue encodedValue = EncodingTraits<T>::encodeValue(value);
append<EncodedValue>(encodedValue);
}
template<typename T>
bool EncodedValue::get(const String& key, typename EncodingTraits<T>::DecodedType& decodedValue)
{
EncodedValue encodedValue;
if (!get<EncodedValue>(key, encodedValue))
return false;
return EncodingTraits<T>::decodeValue(encodedValue, decodedValue);
}
template<typename T>
bool EncodedValue::get(const String& key, std::unique_ptr<typename EncodingTraits<T>::DecodedType>& decodedValue)
{
EncodedValue encodedValue;
if (!get<EncodedValue>(key, encodedValue))
return false;
return EncodingTraits<T>::decodeValue(encodedValue, decodedValue);
}
} // namespace JSC
using JSC::EncodedValue;
using JSC::EncodingTraits;
#endif // ENABLE(WEB_REPLAY)
#endif // EncodedValue_h
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