v8::internal::AstValue Class Reference

#include <ast-value-factory.h>

Inheritance diagram for v8::internal::AstValue:

Collaboration diagram for v8::internal::AstValue:

Public Member Functions
bool	IsString () const
bool	IsNumber () const
const AstRawString *	AsString () const
double	AsNumber () const
bool	EqualsString (const AstRawString *string) const
bool	IsPropertyName () const
bool	BooleanValue () const
void	Internalize (Isolate *isolate)
Handle< Object >	value () const
Public Member Functions inherited from v8::internal::ZoneObject
	INLINE (void *operator new(size_t size, Zone *zone))
void	operator delete (void *, size_t)
void	operator delete (void *pointer, Zone *zone)

Private Types
enum	Type {   STRING , SYMBOL , NUMBER , SMI ,   BOOLEAN , STRING_ARRAY , NULL_TYPE , UNDEFINED ,   THE_HOLE }

Private Member Functions
	AstValue (const AstRawString *s)
	AstValue (const char *name)
	AstValue (double n)
	AstValue (Type t, int i)
	AstValue (bool b)
	AstValue (ZoneList< const AstRawString * > *s)
	AstValue (Type t)

Private Attributes
Type	type_
union {
const AstRawString *   string_
double   number_
int   smi_
bool   bool_
ZoneList< const AstRawString * > *   strings_
const char *   symbol_name_
};
Handle< Object >	value_

Friends
class	AstValueFactory

Detailed Description

Definition at line 139 of file ast-value-factory.h.

Member Enumeration Documentation

Type

enum v8::internal::AstValue::Type

private

Enumerator
STRING
SYMBOL
NUMBER
SMI
BOOLEAN
STRING_ARRAY
NULL_TYPE
UNDEFINED
THE_HOLE

Definition at line 187 of file ast-value-factory.h.

            {
    STRING,
    SYMBOL,
    NUMBER,
    SMI,
    BOOLEAN,
    STRING_ARRAY,
    NULL_TYPE,
    UNDEFINED,
    THE_HOLE
  };

Constructor & Destructor Documentation

AstValue() [1/7]

v8::internal::AstValue::AstValue ( const AstRawString *  s )

inlineexplicitprivate

Definition at line 199 of file ast-value-factory.h.

: type_(STRING) { string_ = s; }

References string_.

AstValue() [2/7]

v8::internal::AstValue::AstValue ( const char *  name )

inlineexplicitprivate

Definition at line 201 of file ast-value-factory.h.

: type_(SYMBOL) { symbol_name_ = name; }

References name, and symbol_name_.

AstValue() [3/7]

v8::internal::AstValue::AstValue ( double  n )

inlineexplicitprivate

Definition at line 203 of file ast-value-factory.h.

: type_(NUMBER) { number_ = n; }

References number_.

AstValue() [4/7]

v8::internal::AstValue::AstValue ( Type  t, int  i  )

inlineprivate

Definition at line 205 of file ast-value-factory.h.

                          : type_(t) {
    DCHECK(type_ == SMI);
    smi_ = i;
  }

References DCHECK, SMI, smi_, and type_.

AstValue() [5/7]

v8::internal::AstValue::AstValue ( bool  b )

inlineexplicitprivate

Definition at line 210 of file ast-value-factory.h.

: type_(BOOLEAN) { bool_ = b; }

References bool_.

AstValue() [6/7]

v8::internal::AstValue::AstValue ( ZoneList< const AstRawString * > *  s )

inlineexplicitprivate

Definition at line 212 of file ast-value-factory.h.

                                                      : type_(STRING_ARRAY) {
    strings_ = s;
  }

References strings_.

AstValue() [7/7]

v8::internal::AstValue::AstValue ( Type  t )

inlineexplicitprivate

Definition at line 216 of file ast-value-factory.h.

                            : type_(t) {
    DCHECK(t == NULL_TYPE || t == UNDEFINED || t == THE_HOLE);
  }

References DCHECK, NULL_TYPE, THE_HOLE, and UNDEFINED.

Member Function Documentation

AsNumber()

double v8::internal::AstValue::AsNumber ( ) const

inline

Definition at line 156 of file ast-value-factory.h.

                          {
    if (type_ == NUMBER)
      return number_;
    if (type_ == SMI)
      return smi_;
    UNREACHABLE();
    return 0;
  }

References NUMBER, number_, SMI, smi_, type_, and UNREACHABLE.

Referenced by v8::internal::ParserTraits::BuildUnaryExpression().

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AsString()

const AstRawString* v8::internal::AstValue::AsString ( ) const

inline

Definition at line 149 of file ast-value-factory.h.

                                       {
    if (type_ == STRING)
      return string_;
    UNREACHABLE();
    return 0;
  }

References STRING, string_, type_, and UNREACHABLE.

BooleanValue()

bool v8::internal::AstValue::BooleanValue

(

)

const

Definition at line 149 of file ast-value-factory.cc.

                                  {
  switch (type_) {
    case STRING:
      DCHECK(string_ != NULL);
      return !string_->IsEmpty();
    case SYMBOL:
      UNREACHABLE();
      break;
    case NUMBER:
      return DoubleToBoolean(number_);
    case SMI:
      return smi_ != 0;
    case STRING_ARRAY:
      UNREACHABLE();
      break;
    case BOOLEAN:
      return bool_;
    case NULL_TYPE:
      return false;
    case THE_HOLE:
      UNREACHABLE();
      break;
    case UNDEFINED:
      return false;
  }
  UNREACHABLE();
  return false;
}

References bool_, BOOLEAN, DCHECK, v8::internal::DoubleToBoolean(), v8::internal::AstString::IsEmpty(), NULL, NULL_TYPE, NUMBER, number_, SMI, smi_, STRING, string_, STRING_ARRAY, SYMBOL, THE_HOLE, type_, UNDEFINED, and UNREACHABLE.

Referenced by v8::internal::ParserTraits::BuildUnaryExpression().

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EqualsString()

bool v8::internal::AstValue::EqualsString ( const AstRawString *  string ) const

inline

Definition at line 165 of file ast-value-factory.h.

                                                      {
    return type_ == STRING && string_ == string;
  }

References STRING, string_, and type_.

Internalize()

void v8::internal::AstValue::Internalize

(

Isolate *

isolate

)

Definition at line 179 of file ast-value-factory.cc.

                                           {
  switch (type_) {
    case STRING:
      DCHECK(string_ != NULL);
      // Strings are already internalized.
      DCHECK(!string_->string().is_null());
      break;
    case SYMBOL:
      value_ = Object::GetProperty(
                   isolate, handle(isolate->native_context()->builtins()),
                   symbol_name_).ToHandleChecked();
      break;
    case NUMBER:
      value_ = isolate->factory()->NewNumber(number_, TENURED);
      break;
    case SMI:
      value_ = handle(Smi::FromInt(smi_), isolate);
      break;
    case BOOLEAN:
      if (bool_) {
        value_ = isolate->factory()->true_value();
      } else {
        value_ = isolate->factory()->false_value();
      }
      break;
    case STRING_ARRAY: {
      DCHECK(strings_ != NULL);
      Factory* factory = isolate->factory();
      int len = strings_->length();
      Handle<FixedArray> elements = factory->NewFixedArray(len, TENURED);
      for (int i = 0; i < len; i++) {
        const AstRawString* string = (*strings_)[i];
        Handle<Object> element = string->string();
        // Strings are already internalized.
        DCHECK(!element.is_null());
        elements->set(i, *element);
      }
      value_ =
          factory->NewJSArrayWithElements(elements, FAST_ELEMENTS, TENURED);
      break;
    }
    case NULL_TYPE:
      value_ = isolate->factory()->null_value();
      break;
    case THE_HOLE:
      value_ = isolate->factory()->the_hole_value();
      break;
    case UNDEFINED:
      value_ = isolate->factory()->undefined_value();
      break;
  }
}

References bool_, BOOLEAN, DCHECK, v8::internal::Isolate::factory(), v8::internal::FAST_ELEMENTS, v8::internal::Smi::FromInt(), v8::internal::Object::GetProperty(), v8::internal::handle(), v8::internal::Handle< T >::is_null(), v8::internal::Isolate::native_context(), NULL, NULL_TYPE, NUMBER, number_, SMI, smi_, v8::internal::AstString::string(), STRING, string_, STRING_ARRAY, strings_, SYMBOL, symbol_name_, v8::internal::TENURED, THE_HOLE, type_, UNDEFINED, and value_.

Referenced by v8::internal::AstValueFactory::NewBoolean(), v8::internal::AstValueFactory::NewNull(), v8::internal::AstValueFactory::NewNumber(), v8::internal::AstValueFactory::NewSmi(), v8::internal::AstValueFactory::NewString(), v8::internal::AstValueFactory::NewStringList(), v8::internal::AstValueFactory::NewSymbol(), v8::internal::AstValueFactory::NewTheHole(), and v8::internal::AstValueFactory::NewUndefined().

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IsNumber()

bool v8::internal::AstValue::IsNumber ( ) const

inline

Definition at line 145 of file ast-value-factory.h.

                        {
    return type_ == NUMBER || type_ == SMI;
  }

References NUMBER, SMI, and type_.

Referenced by v8::internal::ParserTraits::BuildUnaryExpression().

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IsPropertyName()

bool v8::internal::AstValue::IsPropertyName

(

)

const

Definition at line 140 of file ast-value-factory.cc.

                                    {
  if (type_ == STRING) {
    uint32_t index;
    return !string_->AsArrayIndex(&index);
  }
  return false;
}

References v8::internal::AstRawString::AsArrayIndex(), STRING, string_, and type_.

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IsString()

bool v8::internal::AstValue::IsString ( ) const

inline

Definition at line 141 of file ast-value-factory.h.

                        {
    return type_ == STRING;
  }

References STRING, and type_.

value()

Handle<Object> v8::internal::AstValue::value ( ) const

inline

Definition at line 176 of file ast-value-factory.h.

                                         {
    if (type_ == STRING) {
      return string_->string();
    }
    DCHECK(!value_.is_null());
    return value_;
  }

References DCHECK, v8::internal::AstString::string(), STRING, string_, type_, and value_.

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Friends And Related Function Documentation

AstValueFactory

friend class AstValueFactory

friend

Definition at line 185 of file ast-value-factory.h.

Member Data Documentation

union { ... }

bool_

bool v8::internal::AstValue::bool_

Definition at line 227 of file ast-value-factory.h.

Referenced by AstValue(), BooleanValue(), and Internalize().

number_

double v8::internal::AstValue::number_

Definition at line 225 of file ast-value-factory.h.

Referenced by AsNumber(), AstValue(), BooleanValue(), and Internalize().

smi_

int v8::internal::AstValue::smi_

Definition at line 226 of file ast-value-factory.h.

Referenced by AsNumber(), AstValue(), BooleanValue(), and Internalize().

string_

const AstRawString* v8::internal::AstValue::string_

Definition at line 224 of file ast-value-factory.h.

Referenced by AsString(), AstValue(), BooleanValue(), EqualsString(), Internalize(), IsPropertyName(), and value().

strings_

ZoneList<const AstRawString*>* v8::internal::AstValue::strings_

Definition at line 228 of file ast-value-factory.h.

Referenced by AstValue(), and Internalize().

symbol_name_

const char* v8::internal::AstValue::symbol_name_

Definition at line 229 of file ast-value-factory.h.

Referenced by AstValue(), and Internalize().

type_

Type v8::internal::AstValue::type_

private

Definition at line 220 of file ast-value-factory.h.

Referenced by AsNumber(), AsString(), AstValue(), BooleanValue(), EqualsString(), Internalize(), IsNumber(), IsPropertyName(), IsString(), and value().

value_

Handle<Object> v8::internal::AstValue::value_

private

Definition at line 233 of file ast-value-factory.h.

Referenced by Internalize(), and value().

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

• /mnt/V8SourceCode/src/ast-value-factory.h
• /mnt/V8SourceCode/src/ast-value-factory.cc