#include <object.h>

Inheritance diagram for KJS::Object:

Public Member Functions
	Object (ObjectImp *v)

ObjectImp *	imp () const

const ClassInfo *	classInfo () const

bool	inherits (const ClassInfo *cinfo) const

Value	prototype () const

UString	className () const

Value	get (ExecState *exec, const Identifier &propertyName) const

Value	get (ExecState *exec, unsigned propertyName) const

void	put (ExecState *exec, const Identifier &propertyName, const Value &value, int attr=None)

void	put (ExecState *exec, unsigned propertyName, const Value &value, int attr=None)

bool	canPut (ExecState *exec, const Identifier &propertyName) const

bool	hasProperty (ExecState *exec, const Identifier &propertyName) const

bool	hasProperty (ExecState *exec, unsigned propertyName) const

bool	deleteProperty (ExecState *exec, const Identifier &propertyName)

bool	deleteProperty (ExecState *exec, unsigned propertyName)

Value	defaultValue (ExecState *exec, Type hint) const

bool	implementsConstruct () const

Object	construct (ExecState *exec, const List &args)

bool	implementsCall () const

Value	call (ExecState *exec, Object &thisObj, const List &args)

bool	implementsHasInstance () const

Boolean	hasInstance (ExecState *exec, const Value &value)

const ScopeChain &	scope () const

void	setScope (const ScopeChain &s)

ReferenceList	propList (ExecState *exec, bool recursive=true)

Value	internalValue () const

void	setInternalValue (const Value &v)

Public Member Functions inherited from KJS::Value
	Value (ValueImp *v)

	Value (const Value &v)

Value &	operator= (const Value &v)

bool	isValid () const

bool	isNull () const

ValueImp *	imp () const

Type	type () const

bool	isA (Type t) const

Value	toPrimitive (ExecState *exec, Type preferredType=UnspecifiedType) const

bool	toBoolean (ExecState *exec) const

double	toNumber (ExecState *exec) const

int	toInteger (ExecState *exec) const

int	toInt32 (ExecState *exec) const

unsigned int	toUInt32 (ExecState *exec) const

unsigned short	toUInt16 (ExecState *exec) const

UString	toString (ExecState *exec) const

Object	toObject (ExecState *exec) const

bool	toUInt32 (unsigned &i) const

Static Public Member Functions
static Object	dynamicCast (const Value &v)

Additional Inherited Members
Protected Attributes inherited from KJS::Value
ValueImp *	rep

Detailed Description

Represents an Object.

This is a wrapper for ObjectImp

Definition at line 81 of file object.h.

Member Function Documentation

◆ call()

Value Object::call	(	ExecState *	exec,
		Object &	thisObj,
		const List &	args
	)

Calls this object as if it is a function.

Note: This function should not be called if implementsCall() returns false, in which case it will result in an assertion failure.

See ECMA 8.6.2.3

Parameters

exec	The current execution state
thisObj	The obj to be used as "this" within function execution. Note that in most cases this will be different from the C++ "this" object. For example, if the ECMAScript code "window.location.toString()" is executed, call() will be invoked on the C++ object which implements the toString method, with the thisObj being window.location
args	List of arguments to be passed to the function

Returns: The return value from the function

Definition at line 53 of file object.cpp.

◆ canPut()

bool KJS::Object::canPut	(	ExecState *	exec,
		const Identifier &	propertyName
	)		const

inline

Used to check whether or not a particular property is allowed to be set on an object.

See ECMA 8.6.2.3

Parameters

exec	The current execution state
propertyName	The name of the property

Returns: true if the property can be set, otherwise false

Definition at line 675 of file object.h.

◆ className()

UString KJS::Object::className ( ) const

inline

Returns the class name of the object.

See ECMA 8.6.2

Returns: The object's class name

Definition at line 660 of file object.h.

◆ construct()

Object KJS::Object::construct	(	ExecState *	exec,
		const List &	args
	)

inline

Creates a new object based on this object.

Typically this means the following:

A new object is created
The prototype of the new object is set to the value of this object's "prototype" property
The call() method of this object is called, with the new object passed as the this value
The new object is returned

In some cases, Host objects may differ from these semantics, although this is discouraged.

If an error occurs during construction, the execution state's exception will be set. This can be tested for with ExecState::hadException(). Under some circumstances, the exception object may also be returned.

Note: This function should not be called if implementsConstruct() returns false, in which case it will result in an assertion failure.

Parameters

exec	The current execution state
args	The arguments to be passed to call() once the new object has been created

Returns: The newly created & initialized object

Definition at line 696 of file object.h.

◆ defaultValue()

Value KJS::Object::defaultValue	(	ExecState *	exec,
		Type	hint
	)		const

inline

Converts the object into a primitive value.

The value return may differ depending on the supplied hint

See ECMA 8.6.2.6

Parameters

exec	The current execution state
hint	The desired primitive type to convert to

Returns: A primitive value converted from the objetc. Note that the type of primitive value returned may not be the same as the requested hint.

Definition at line 690 of file object.h.

◆ deleteProperty()

bool KJS::Object::deleteProperty	(	ExecState *	exec,
		const Identifier &	propertyName
	)

inline

Removes the specified property from the object.

See ECMA 8.6.2.5

Parameters

exec	The current execution state
propertyName	The name of the property to delete

Returns: true if the property was successfully deleted or did not exist on the object. false if deleting the specified property is not allowed.

Definition at line 684 of file object.h.

◆ dynamicCast()

Object Object::dynamicCast ( const Value & v )

static

Converts a Value into an Object.

If the value's type is not ObjectType, a null object will be returned (i.e. one with it's internal pointer set to 0). If you do not know for sure whether the value is of type ObjectType, you should check the isValid() methods afterwards before calling any methods on the Object.

Returns: The value converted to an object

Definition at line 45 of file object.cpp.

◆ get()

Value KJS::Object::get	(	ExecState *	exec,
		const Identifier &	propertyName
	)		const

inline

Retrieves the specified property from the object.

If neither the object or any other object in it's prototype chain have the property, this function will return Undefined.

See ECMA 8.6.2.1

Parameters

exec	The current execution state
propertyName	The name of the property to retrieve

Returns: The specified property, or Undefined

Definition at line 663 of file object.h.

◆ hasInstance()

Boolean KJS::Object::hasInstance	(	ExecState *	exec,
		const Value &	value
	)

inline

Checks whether value delegates behavior to this object.

Used by the instanceof operator.

Parameters

exec	The current execution state
value	The value to check

Returns: true if value delegates behavior to this object, otherwise false

Definition at line 705 of file object.h.

◆ hasProperty()

bool KJS::Object::hasProperty	(	ExecState *	exec,
		const Identifier &	propertyName
	)		const

inline

Checks to see whether the object (or any object in it's prototype chain) has a property with the specified name.

See ECMA 8.6.2.4

Parameters

exec	The current execution state
propertyName	The name of the property to check for

Returns: true if the object has the property, otherwise false

Definition at line 678 of file object.h.

◆ implementsCall()

bool KJS::Object::implementsCall ( ) const

inline

Whether or not the object implements the call() method.

If this returns false you should not call the call() method on this object (typically, an assertion will fail to indicate this).

Returns: true if this object implements the call() method, otherwise false

Definition at line 699 of file object.h.

◆ implementsConstruct()

bool KJS::Object::implementsConstruct ( ) const

inline

Whether or not the object implements the construct() method.

If this returns false you should not call the construct() method on this object (typically, an assertion will fail to indicate this).

Returns: true if this object implements the construct() method, otherwise false

Definition at line 693 of file object.h.

◆ implementsHasInstance()

bool KJS::Object::implementsHasInstance ( ) const

inline

Whether or not the object implements the hasInstance() method.

If this returns false you should not call the hasInstance() method on this object (typically, an assertion will fail to indicate this).

Returns: true if this object implements the hasInstance() method, otherwise false

Definition at line 702 of file object.h.

◆ internalValue()

Value KJS::Object::internalValue ( ) const

inline

Returns the internal value of the object.

This is used for objects such as String and Boolean which are wrappers for native types. The interal value is the actual value represented by the wrapper objects.

See also: ECMA 8.6.2

Returns: The internal value of the object

Definition at line 717 of file object.h.

◆ propList()

ReferenceList KJS::Object::propList	(	ExecState *	exec,
		bool	recursive = `true`
	)

inline

Returns a List of References to all the properties of the object.

Used in "for x in y" statements. The list is created new, so it can be freely modified without affecting the object's properties. It should be deleted by the caller.

Subclasses can override this method in ObjectImpl to provide the appearance of having extra properties other than those set specifically with put().

Parameters

exec	The current execution state
recursive	Whether or not properties in the object's prototype chain should be included in the list.

Returns: A List of References to properties of the object.

Definition at line 714 of file object.h.

◆ prototype()

Value KJS::Object::prototype ( ) const

inline

Returns the prototype of this object.

Note that this is not the same as the "prototype" property.

See ECMA 8.6.2

Returns: The object's prototype

Definition at line 657 of file object.h.

◆ put()

void KJS::Object::put	(	ExecState *	exec,
		const Identifier &	propertyName,
		const Value &	value,
		int	attr = `None`
	)

inline

Sets the specified property.

See ECMA 8.6.2.2

Parameters

exec	The current execution state
propertyName	The name of the property to set
value	The value to set
attr	The Attribute value for the property

Definition at line 669 of file object.h.

◆ scope()

const ScopeChain & KJS::Object::scope ( ) const

inline

Returns the scope of this object.

This is used when execution declared functions - the execution context for the function is initialized with extra object in it's scope. An example of this is functions declared inside other functions:

function f() {
 
  function b() {
    return prototype;
  }
 
  var x = 4;
  // do some stuff
}
f.prototype = new String();

When the function f.b is executed, its scope will include properties of f. So in the example above the return value of f.b() would be the new String object that was assigned to f.prototype.

Returns: The function's scope

Definition at line 708 of file object.h.

◆ setInternalValue()

void KJS::Object::setInternalValue ( const Value & v )

inline

Sets the internal value of the object.

See also: internalValue()

Parameters

v	The new internal value

Definition at line 720 of file object.h.

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

kjs

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ call()

◆ canPut()

◆ className()

◆ construct()

◆ defaultValue()

◆ deleteProperty()

◆ dynamicCast()

◆ get()

◆ hasInstance()

◆ hasProperty()

◆ implementsCall()

◆ implementsConstruct()

◆ implementsHasInstance()

◆ internalValue()

◆ propList()

◆ prototype()

◆ put()

◆ scope()

◆ setInternalValue()

kjs

kjs