dart::ObjectPtr Class Reference

#include <tagged_pointer.h>

Public Member Functions
UntaggedObject *	untag () const
bool	IsStringInstance () const
bool	IsRawNull () const
bool	IsDartInstance () const
bool	IsFreeListElement () const
bool	IsForwardingCorpse () const
bool	IsPseudoObject () const
intptr_t	GetClassId () const
intptr_t	GetClassIdMayBeSmi () const
void	Validate (IsolateGroup *isolate_group) const
bool	operator== (const std::nullptr_t &other)
bool	operator!= (const std::nullptr_t &other)
constexpr bool	operator== (const std::nullptr_t &other) const
constexpr bool	operator!= (const std::nullptr_t &other) const
	operator bool () const =delete
	operator int () const
	operator long () const
	operator long long () const
	operator unsigned int () const
	operator unsigned long () const
	operator unsigned long long () const
ObjectPtr &	operator= (const ObjectPtr &other)=default
constexpr	ObjectPtr (const ObjectPtr &other)=default
	ObjectPtr ()
constexpr	ObjectPtr (uword tagged)
constexpr	ObjectPtr (intptr_t tagged)
constexpr	ObjectPtr (std::nullptr_t)
	ObjectPtr (UntaggedObject *heap_object)
ObjectPtr	Decompress (uword heap_base) const
ObjectPtr	DecompressSmi () const
uword	heap_base () const

Protected Member Functions
uword	untagged_pointer () const

Protected Attributes
uword	tagged_pointer_

Detailed Description

Definition at line 101 of file tagged_pointer.h.

Constructor & Destructor Documentation

ObjectPtr() [1/6]

constexpr dart::ObjectPtr::ObjectPtr ( const ObjectPtr &  other )

constexprdefault

ObjectPtr() [2/6]

dart::ObjectPtr::ObjectPtr ( )

inline

Definition at line 210 of file tagged_pointer.h.

: tagged_pointer_(0) {}

ObjectPtr() [3/6]

constexpr dart::ObjectPtr::ObjectPtr ( uword  tagged )

inlineexplicitconstexpr

Definition at line 211 of file tagged_pointer.h.

: tagged_pointer_(tagged) {}

ObjectPtr() [4/6]

constexpr dart::ObjectPtr::ObjectPtr ( intptr_t  tagged )

inlineexplicitconstexpr

Definition at line 212 of file tagged_pointer.h.

: tagged_pointer_(tagged) {}

ObjectPtr() [5/6]

constexpr dart::ObjectPtr::ObjectPtr ( std::nullptr_t  )

inlineconstexpr

Definition at line 213 of file tagged_pointer.h.

: tagged_pointer_(0) {}  // NOLINT

ObjectPtr() [6/6]

dart::ObjectPtr::ObjectPtr ( UntaggedObject *  heap_object )

inlineexplicit

Definition at line 214 of file tagged_pointer.h.

      : tagged_pointer_(reinterpret_cast<uword>(heap_object) + kHeapObjectTag) {
  }

Member Function Documentation

Decompress()

ObjectPtr dart::ObjectPtr::Decompress ( uword  heap_base ) const

inline

Definition at line 218 of file tagged_pointer.h.

{ return *this; }

DecompressSmi()

ObjectPtr dart::ObjectPtr::DecompressSmi ( ) const

inline

Definition at line 219 of file tagged_pointer.h.

{ return *this; }

GetClassId()

intptr_t dart::ObjectPtr::GetClassId ( ) const

inline

Definition at line 885 of file raw_object.h.

                                            {
  return untag()->GetClassId();
}

GetClassIdMayBeSmi()

intptr_t dart::ObjectPtr::GetClassIdMayBeSmi ( ) const

inline

Definition at line 151 of file tagged_pointer.h.

                                      {
    return IsHeapObject() ? GetClassId() : static_cast<intptr_t>(kSmiCid);
  }

heap_base()

uword dart::ObjectPtr::heap_base ( ) const

inline

Definition at line 220 of file tagged_pointer.h.

                          {
    // TODO(rmacnak): Why does Windows have trouble linking GetClassId used
    // here?
#if !defined(DART_HOST_OS_WINDOWS)
    ASSERT(IsHeapObject());
    ASSERT(!IsInstructions());
    ASSERT(!IsInstructionsSection());
#endif
    return tagged_pointer_ & kHeapBaseMask;
  }

IsDartInstance()

bool dart::ObjectPtr::IsDartInstance ( ) const

inline

Definition at line 137 of file tagged_pointer.h.

                              {
    return (!IsHeapObject() || !IsInternalOnlyClassId(GetClassId()));
  }

IsForwardingCorpse()

bool dart::ObjectPtr::IsForwardingCorpse ( ) const

inline

Definition at line 143 of file tagged_pointer.h.

                                  {
    return ((GetClassId() == kForwardingCorpse));
  }

IsFreeListElement()

bool dart::ObjectPtr::IsFreeListElement ( ) const

inline

Definition at line 140 of file tagged_pointer.h.

                                 {
    return ((GetClassId() == kFreeListElement));
  }

IsPseudoObject()

bool dart::ObjectPtr::IsPseudoObject ( ) const

inline

Definition at line 146 of file tagged_pointer.h.

                              {
    return IsFreeListElement() || IsForwardingCorpse();
  }

IsRawNull()

bool dart::ObjectPtr::IsRawNull ( ) const

inline

Definition at line 136 of file tagged_pointer.h.

{ return GetClassId() == kNullCid; }

IsStringInstance()

bool dart::ObjectPtr::IsStringInstance ( ) const

inline

Definition at line 135 of file tagged_pointer.h.

{ return IsStringClassId(GetClassId()); }

operator bool()

dart::ObjectPtr::operator bool ( ) const

delete

operator int()

dart::ObjectPtr::operator int ( ) const

inlineexplicit

Definition at line 176 of file tagged_pointer.h.

                                {              // NOLINT
    return static_cast<int>(tagged_pointer_);  // NOLINT
  }

operator long()

dart::ObjectPtr::operator long ( ) const

inlineexplicit

Definition at line 181 of file tagged_pointer.h.

                                 {              // NOLINT
    return static_cast<long>(tagged_pointer_);  // NOLINT
  }

operator long long()

dart::ObjectPtr::operator long long ( ) const

inlineexplicit

Definition at line 186 of file tagged_pointer.h.

                                      {              // NOLINT
    return static_cast<long long>(tagged_pointer_);  // NOLINT
  }

operator unsigned int()

dart::ObjectPtr::operator unsigned int ( ) const

inlineexplicit

Definition at line 191 of file tagged_pointer.h.

                                         {              // NOLINT
    return static_cast<unsigned int>(tagged_pointer_);  // NOLINT
  }

operator unsigned long()

dart::ObjectPtr::operator unsigned long ( ) const

inlineexplicit

Definition at line 196 of file tagged_pointer.h.

                                          {              // NOLINT
    return static_cast<unsigned long>(tagged_pointer_);  // NOLINT
  }

operator unsigned long long()

dart::ObjectPtr::operator unsigned long long ( ) const

inlineexplicit

Definition at line 201 of file tagged_pointer.h.

                                               {              // NOLINT
    return static_cast<unsigned long long>(tagged_pointer_);  // NOLINT
  }

operator!=() [1/2]

bool dart::ObjectPtr::operator!= ( const std::nullptr_t &  other )

inline

Definition at line 158 of file tagged_pointer.h.

{ return tagged_pointer_ != 0; }

operator!=() [2/2]

constexpr bool dart::ObjectPtr::operator!= ( const std::nullptr_t &  other ) const

inlineconstexpr

Definition at line 162 of file tagged_pointer.h.

                                                             {
    return tagged_pointer_ != 0;
  }

operator=()

ObjectPtr & dart::ObjectPtr::operator= ( const ObjectPtr &  other )

default

operator==() [1/2]

bool dart::ObjectPtr::operator== ( const std::nullptr_t &  other )

inline

Definition at line 157 of file tagged_pointer.h.

{ return tagged_pointer_ == 0; }

operator==() [2/2]

constexpr bool dart::ObjectPtr::operator== ( const std::nullptr_t &  other ) const

inlineconstexpr

Definition at line 159 of file tagged_pointer.h.

                                                             {
    return tagged_pointer_ == 0;
  }

untag()

UntaggedObject * dart::ObjectPtr::untag ( ) const

inline

Definition at line 105 of file tagged_pointer.h.

                                {
    return reinterpret_cast<UntaggedObject*>(untagged_pointer());
  }

untagged_pointer()

uword dart::ObjectPtr::untagged_pointer ( ) const

inlineprotected

Definition at line 232 of file tagged_pointer.h.

                                 {
    ASSERT(IsHeapObject());
    return tagged_pointer_ - kHeapObjectTag;
  }

Validate()

void dart::ObjectPtr::Validate

(

IsolateGroup *

isolate_group

)

const

Definition at line 30 of file raw_object.cc.

                                                          {
  // All Smi values are valid.
  if (!IsHeapObject()) {
    return;
  }
  // Slightly more readable than a segfault.
  if (tagged_pointer_ == kHeapObjectTag) {
    FATAL("RAW_NULL encountered");
  }
  untag()->Validate(isolate_group);
}

Member Data Documentation

tagged_pointer_

uword dart::ObjectPtr::tagged_pointer_

protected

Definition at line 237 of file tagged_pointer.h.

---

The documentation for this class was generated from the following files:

• third_party/dart-lang/sdk/runtime/vm/tagged_pointer.h
• third_party/dart-lang/sdk/runtime/vm/raw_object.cc
• third_party/dart-lang/sdk/runtime/vm/raw_object.h