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class HeapNumber; // Alias for HeapObject::IsHeapNumber() that avoids inlining. V8_EXPORT_PRIVATE bool IsHeapNumber_NonInline(HeapObject o); template <class D, class P> class TorqueGeneratedHeapNumber : public P { static_assert(std::is_same<HeapNumber, D>::value, "Use this class as direct base for HeapNumber."); static_assert(std::is_same<PrimitiveHeapObject, P>::value, "Pass in PrimitiveHeapObject as second template parameter for TorqueGeneratedHeapNumber."); public: using Super = P; using TorqueGeneratedClass = TorqueGeneratedHeapNumber<D,P>; inline double value() const; inline void set_value(double value, RelaxedStoreTag); V8_INLINE static D cast(Object object) { return D(object.ptr()); } V8_INLINE static D unchecked_cast(Object object) { return bit_cast<D>(object); } #ifdef VERIFY_HEAP V8_EXPORT_PRIVATE void HeapNumberVerify(Isolate* isolate); #endif // VERIFY_HEAP static constexpr int kValueOffset = P::kHeaderSize; static constexpr int kValueOffsetEnd = kValueOffset + kDoubleSize - 1; static constexpr int kStartOfWeakFieldsOffset = kValueOffsetEnd + 1; static constexpr int kEndOfWeakFieldsOffset = kValueOffsetEnd + 1; static constexpr int kStartOfStrongFieldsOffset = kValueOffsetEnd + 1; static constexpr int kEndOfStrongFieldsOffset = kValueOffsetEnd + 1; static constexpr int kHeaderSize = kValueOffsetEnd + 1; static constexpr int kSize = kValueOffsetEnd + 1; V8_INLINE static constexpr int32_t SizeFor() { DCHECK(kHeaderSize == kSize && kHeaderSize == 16); int32_t size = kHeaderSize; return size; } V8_INLINE int32_t AllocatedSize() const { return SizeFor(); } friend class Factory; public: template <class DAlias = D> constexpr TorqueGeneratedHeapNumber() : P() { static_assert(std::is_base_of<TorqueGeneratedHeapNumber, DAlias>::value, "class TorqueGeneratedHeapNumber should be used as direct base for HeapNumber."); } protected: inline explicit TorqueGeneratedHeapNumber(Address ptr); // Special-purpose constructor for subclasses that have fast paths where // their ptr() is a Smi. inline explicit TorqueGeneratedHeapNumber(Address ptr, HeapObject::AllowInlineSmiStorage allow_smi); };