v8::internal::IntrusiveMapTransitionIterator Class Reference

Collaboration diagram for v8::internal::IntrusiveMapTransitionIterator:

Public Member Functions
	IntrusiveMapTransitionIterator (Map *map, TransitionArray *transition_array, Object *constructor)
void	StartIfNotStarted ()
bool	IsIterating ()
Map *	Next ()

Private Member Functions
Object **	IteratorField ()

Private Attributes
Map *	map_
TransitionArray *	transition_array_
Object *	constructor_

Detailed Description

Definition at line 7078 of file objects.cc.

Constructor & Destructor Documentation

IntrusiveMapTransitionIterator()

v8::internal::IntrusiveMapTransitionIterator::IntrusiveMapTransitionIterator ( Map *  map, TransitionArray *  transition_array, Object *  constructor  )

inline

Definition at line 7080 of file objects.cc.

      : map_(map),
        transition_array_(transition_array),
        constructor_(constructor) { }

Member Function Documentation

IsIterating()

bool v8::internal::IntrusiveMapTransitionIterator::IsIterating ( )

inline

Definition at line 7094 of file objects.cc.

                     {
    return (*IteratorField())->IsSmi() &&
           Smi::cast(*IteratorField())->value() < 0;
  }

Referenced by v8::internal::TraversableMap::ChildIteratorNext().

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IteratorField()

Object** v8::internal::IntrusiveMapTransitionIterator::IteratorField ( )

inlineprivate

Definition at line 7114 of file objects.cc.

                           {
    return HeapObject::RawField(map_, Map::kConstructorOffset);
  }

References v8::internal::Map::kConstructorOffset, and v8::internal::HeapObject::RawField().

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Next()

Map* v8::internal::IntrusiveMapTransitionIterator::Next ( )

inline

Definition at line 7099 of file objects.cc.

              {
    DCHECK(IsIterating());
    int value = Smi::cast(*IteratorField())->value();
    int index = -value - 1;
    int number_of_transitions = transition_array_->number_of_transitions();
    while (index < number_of_transitions) {
      *IteratorField() = Smi::FromInt(value - 1);
      return transition_array_->GetTarget(index);
    }
 
    *IteratorField() = constructor_;
    return NULL;
  }

References DCHECK, v8::internal::Smi::FromInt(), and NULL.

Referenced by v8::internal::TraversableMap::ChildIteratorNext().

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StartIfNotStarted()

void v8::internal::IntrusiveMapTransitionIterator::StartIfNotStarted ( )

inline

Definition at line 7086 of file objects.cc.

                           {
    DCHECK(!(*IteratorField())->IsSmi() || IsIterating());
    if (!(*IteratorField())->IsSmi()) {
      DCHECK(*IteratorField() == constructor_);
      *IteratorField() = Smi::FromInt(-1);
    }
  }

References DCHECK, and v8::internal::Smi::FromInt().

Referenced by v8::internal::TraversableMap::ChildIteratorNext().

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Member Data Documentation

constructor_

Object* v8::internal::IntrusiveMapTransitionIterator::constructor_

private

Definition at line 7120 of file objects.cc.

map_

Map* v8::internal::IntrusiveMapTransitionIterator::map_

private

Definition at line 7118 of file objects.cc.

transition_array_

TransitionArray* v8::internal::IntrusiveMapTransitionIterator::transition_array_

private

Definition at line 7119 of file objects.cc.

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

• /mnt/V8SourceCode/src/objects.cc