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/*
* Copyright (C) 2024 Sosuke Suzuki <aosukeke@gmail.com>.
*
* 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 APPLE INC. ``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 APPLE INC. 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 "JSInternalFieldObjectImpl.h"
namespace JSC {
const static uint8_t JSRegExpStringIteratorNumberOfInternalFields = 3;
class JSRegExpStringIterator final : public JSInternalFieldObjectImpl<JSRegExpStringIteratorNumberOfInternalFields> {
public:
using Base = JSInternalFieldObjectImpl<JSRegExpStringIteratorNumberOfInternalFields>;
DECLARE_EXPORT_INFO;
DECLARE_VISIT_CHILDREN;
enum class Field : uint8_t {
RegExp = 0,
String,
Flags, // Global, FullUnicode, Done as bit flags
};
static_assert(numberOfInternalFields == JSRegExpStringIteratorNumberOfInternalFields);
enum class FlagBit : uint8_t {
Global = 1 << 0,
FullUnicode = 1 << 1,
Done = 1 << 2,
};
static std::array<JSValue, numberOfInternalFields> initialValues()
{
return { {
jsNull(),
jsNull(),
jsNumber(0),
} };
}
const WriteBarrier<Unknown>& internalField(Field field) const { return Base::internalField(static_cast<uint32_t>(field)); }
WriteBarrier<Unknown>& internalField(Field field) { return Base::internalField(static_cast<uint32_t>(field)); }
template<typename CellType, SubspaceAccess mode>
static GCClient::IsoSubspace* subspaceFor(VM& vm)
{
return vm.regExpStringIteratorSpace<mode>();
}
inline static Structure* createStructure(VM&, JSGlobalObject*, JSValue);
static JSRegExpStringIterator* createWithInitialValues(VM&, Structure*);
bool isGlobal() const { return flags() & static_cast<uint8_t>(FlagBit::Global); }
bool isFullUnicode() const { return flags() & static_cast<uint8_t>(FlagBit::FullUnicode); }
bool isDone() const { return flags() & static_cast<uint8_t>(FlagBit::Done); }
void setRegExp(VM& vm, JSObject* regExp) { internalField(Field::RegExp).set(vm, this, regExp); }
void setString(VM& vm, JSValue string) { internalField(Field::String).set(vm, this, string); }
void setGlobal(bool global) { setFlag(FlagBit::Global, global); }
void setFullUnicode(bool fullUnicode) { setFlag(FlagBit::FullUnicode, fullUnicode); }
void setDone(bool done) { setFlag(FlagBit::Done, done); }
void setFlags(bool global, bool fullUnicode, bool done = false)
{
uint8_t flagValue = 0;
if (global)
flagValue |= static_cast<uint8_t>(FlagBit::Global);
if (fullUnicode)
flagValue |= static_cast<uint8_t>(FlagBit::FullUnicode);
if (done)
flagValue |= static_cast<uint8_t>(FlagBit::Done);
internalField(Field::Flags).setWithoutWriteBarrier(jsNumber(flagValue));
}
private:
uint8_t flags() const { return static_cast<uint8_t>(internalField(Field::Flags).get().asInt32()); }
void setFlag(FlagBit bit, bool value)
{
uint8_t currentFlags = flags();
if (value)
currentFlags |= static_cast<uint8_t>(bit);
else
currentFlags &= ~static_cast<uint8_t>(bit);
internalField(Field::Flags).setWithoutWriteBarrier(jsNumber(currentFlags));
}
JSRegExpStringIterator(VM& vm, Structure* structure)
: Base(vm, structure)
{
}
void finishCreation(VM&);
};
STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(JSRegExpStringIterator);
JSC_DECLARE_HOST_FUNCTION(regExpStringIteratorPrivateFuncCreate);
} // namespace JSC
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