v8::internal::ToBooleanStub::Types Class Reference

#include <code-stubs.h>

Inheritance diagram for v8::internal::ToBooleanStub::Types:

Collaboration diagram for v8::internal::ToBooleanStub::Types:

Public Member Functions
	Types ()
	Types (byte bits)
byte	ToByte () const
bool	UpdateStatus (Handle< Object > object)
bool	NeedsMap () const
bool	CanBeUndetectable () const
bool	IsGeneric () const
Public Member Functions inherited from v8::internal::EnumSet< Type, byte >
	EnumSet (byte bits=0)
bool	IsEmpty () const
bool	Contains (Type element) const
bool	ContainsAnyOf (const EnumSet &set) const
void	Add (Type element)
void	Add (const EnumSet &set)
void	Remove (Type element)
void	Remove (const EnumSet &set)
void	RemoveAll ()
void	Intersect (const EnumSet &set)
byte	ToIntegral () const
bool	operator== (const EnumSet &set)
bool	operator!= (const EnumSet &set)
EnumSet< Type, byte >	operator| (const EnumSet &set) const

Static Public Member Functions
static Types	Generic ()

Detailed Description

Definition at line 2223 of file code-stubs.h.

Constructor & Destructor Documentation

Types() [1/2]

v8::internal::ToBooleanStub::Types::Types ( )

inline

Definition at line 2225 of file code-stubs.h.

: EnumSet<Type, byte>(0) {}

Referenced by Generic().

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Types() [2/2]

v8::internal::ToBooleanStub::Types::Types ( byte  bits )

inlineexplicit

Definition at line 2226 of file code-stubs.h.

: EnumSet<Type, byte>(bits) {}

Member Function Documentation

CanBeUndetectable()

bool v8::internal::ToBooleanStub::Types::CanBeUndetectable

(

)

const

Definition at line 911 of file code-stubs.cc.

                                                 {
  return Contains(ToBooleanStub::SPEC_OBJECT)
      || Contains(ToBooleanStub::STRING);
}

References v8::internal::ToBooleanStub::SPEC_OBJECT, and v8::internal::ToBooleanStub::STRING.

Generic()

static Types v8::internal::ToBooleanStub::Types::Generic ( )

inlinestatic

Definition at line 2234 of file code-stubs.h.

{ return Types((1 << NUMBER_OF_TYPES) - 1); }

References v8::internal::ToBooleanStub::NUMBER_OF_TYPES, and Types().

Referenced by IsGeneric().

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IsGeneric()

bool v8::internal::ToBooleanStub::Types::IsGeneric ( ) const

inline

Definition at line 2232 of file code-stubs.h.

{ return ToIntegral() == Generic().ToIntegral(); }

References Generic(), v8::internal::EnumSet< E, T >::ToIntegral(), and v8::internal::EnumSet< Type, byte >::ToIntegral().

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NeedsMap()

bool v8::internal::ToBooleanStub::Types::NeedsMap

(

)

const

Definition at line 903 of file code-stubs.cc.

                                        {
  return Contains(ToBooleanStub::SPEC_OBJECT)
      || Contains(ToBooleanStub::STRING)
      || Contains(ToBooleanStub::SYMBOL)
      || Contains(ToBooleanStub::HEAP_NUMBER);
}

References v8::internal::ToBooleanStub::HEAP_NUMBER, v8::internal::ToBooleanStub::SPEC_OBJECT, v8::internal::ToBooleanStub::STRING, and v8::internal::ToBooleanStub::SYMBOL.

ToByte()

byte v8::internal::ToBooleanStub::Types::ToByte ( ) const

inline

Definition at line 2228 of file code-stubs.h.

{ return ToIntegral(); }

References v8::internal::EnumSet< Type, byte >::ToIntegral().

Referenced by v8::internal::ToBooleanStub::ToBooleanStub(), and v8::internal::ToBooleanStub::UpdateStatus().

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UpdateStatus()

bool v8::internal::ToBooleanStub::Types::UpdateStatus

(

Handle< Object >

object

)

Definition at line 867 of file code-stubs.cc.

                                                           {
  if (object->IsUndefined()) {
    Add(UNDEFINED);
    return false;
  } else if (object->IsBoolean()) {
    Add(BOOLEAN);
    return object->IsTrue();
  } else if (object->IsNull()) {
    Add(NULL_TYPE);
    return false;
  } else if (object->IsSmi()) {
    Add(SMI);
    return Smi::cast(*object)->value() != 0;
  } else if (object->IsSpecObject()) {
    Add(SPEC_OBJECT);
    return !object->IsUndetectableObject();
  } else if (object->IsString()) {
    Add(STRING);
    return !object->IsUndetectableObject() &&
        String::cast(*object)->length() != 0;
  } else if (object->IsSymbol()) {
    Add(SYMBOL);
    return true;
  } else if (object->IsHeapNumber()) {
    DCHECK(!object->IsUndetectableObject());
    Add(HEAP_NUMBER);
    double value = HeapNumber::cast(*object)->value();
    return value != 0 && !std::isnan(value);
  } else {
    // We should never see an internal object at runtime here!
    UNREACHABLE();
    return true;
  }
}

References v8::internal::EnumSet< Type, byte >::Add(), v8::internal::ToBooleanStub::BOOLEAN, DCHECK, v8::internal::ToBooleanStub::HEAP_NUMBER, v8::internal::ToBooleanStub::NULL_TYPE, v8::internal::ToBooleanStub::SMI, v8::internal::ToBooleanStub::SPEC_OBJECT, v8::internal::ToBooleanStub::STRING, v8::internal::ToBooleanStub::SYMBOL, v8::internal::ToBooleanStub::UNDEFINED, and UNREACHABLE.

Referenced by v8::internal::ToBooleanStub::UpdateStatus().

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

• /mnt/V8SourceCode/src/code-stubs.h
• /mnt/V8SourceCode/src/code-stubs.cc