Class NativeArrayBufferView

java.lang.Object

org.mozilla.javascript.ScriptableObject

org.mozilla.javascript.IdScriptableObject

org.mozilla.javascript.typedarrays.NativeArrayBufferView

All Implemented Interfaces:

Serializable, ConstProperties, DebuggableObject, IdFunctionCall, Scriptable, SymbolScriptable

Direct Known Subclasses:

NativeDataView, NativeTypedArrayView

public abstract class NativeArrayBufferView
extends IdScriptableObject

This class is the abstract parent for all views of the array. It shows a view of the underlying NativeArrayBuffer. Many views may simultaneously share the same buffer, and changes to one will affect all.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class ScriptableObject

ScriptableObject.KeyComparator

Field Summary

Fields

Modifier and Type	Field	Description
protected final NativeArrayBuffer	arrayBuffer	Many view objects can share the same backing array
protected final int	byteLength	The length, in bytes, of the portion of the backing array that we use
protected static final int	MAX_INSTANCE_ID
protected final int	offset	The offset, in bytes, from the start of the backing array

Fields inherited from class ScriptableObject

CONST, DONTENUM, EMPTY, PERMANENT, READONLY, UNINITIALIZED_CONST

Fields inherited from interface Scriptable

NOT_FOUND

Constructor Summary

Constructors

Modifier	Constructor	Description
	NativeArrayBufferView()
protected	NativeArrayBufferView(NativeArrayBuffer ab, int offset, int byteLength)

Method Summary

Modifier and Type	Method	Description
protected int	findInstanceIdInfo(String s)	Map name to id of instance property.
Object	get(Symbol key, Scriptable start)	Another version of Get that supports Symbol keyed properties.
NativeArrayBuffer	getBuffer()	Return the buffer that backs this view.
int	getByteLength()	Return the length, in bytes, of the part of the buffer that this view represents.
int	getByteOffset()	Return the offset in bytes from the start of the buffer that this view represents.
protected String	getInstanceIdName(int id)	Map id back to property name it defines.
protected Object	getInstanceIdValue(int id)	Get id value.
protected int	getMaxInstanceId()	Get maximum id findInstanceIdInfo can generate.
protected static boolean	isArg(Object[] args, int i)
protected static boolean	useLittleEndian()

Methods inherited from class IdScriptableObject

activatePrototypeMap, addIdFunctionProperty, defaultGet, defaultHas, defaultPut, defineOwnProperty, delete, delete, ensureType, execIdCall, exportAsJSClass, fillConstructorProperties, findInstanceIdInfo, findPrototypeId, findPrototypeId, get, getAttributes, getAttributes, getOwnPropertyDescriptor, has, has, hasPrototypeMap, initPrototypeConstructor, initPrototypeId, initPrototypeMethod, initPrototypeMethod, initPrototypeMethod, initPrototypeValue, initPrototypeValue, instanceIdInfo, put, put, setAttributes, setInstanceIdAttributes, setInstanceIdValue

Methods inherited from class ScriptableObject

applyDescriptorToAttributeBitset, associateValue, avoidObjectDetection, buildDataDescriptor, callMethod, callMethod, checkPropertyChange, checkPropertyDefinition, defineClass, defineClass, defineClass, defineConst, defineConstProperty, defineFunctionProperties, defineOwnProperties, defineOwnProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, delete, deleteProperty, deleteProperty, ensureScriptable, ensureScriptableObject, ensureSymbolScriptable, equivalentValues, get, get, getAllIds, getArrayPrototype, getAssociatedValue, getAttributes, getAttributes, getAttributes, getClassName, getClassPrototype, getDefaultValue, getDefaultValue, getExternalArrayData, getExternalArrayLength, getFunctionPrototype, getGeneratorFunctionPrototype, getGetterOrSetter, getGetterOrSetter, getIds, getObjectPrototype, getParentScope, getProperty, getProperty, getProperty, getPropertyIds, getPrototype, getTopLevelScope, getTopScopeValue, getTypedProperty, getTypedProperty, getTypeOf, has, hasInstance, hasProperty, hasProperty, hasProperty, isAccessorDescriptor, isConst, isDataDescriptor, isEmpty, isExtensible, isFalse, isGenericDescriptor, isGetterOrSetter, isSealed, isTrue, preventExtensions, put, putConst, putConstProperty, putProperty, putProperty, putProperty, querySlot, redefineProperty, sameValue, sealObject, setAttributes, setAttributes, setAttributes, setAttributes, setCommonDescriptorProperties, setExternalArrayData, setGetterOrSetter, setParentScope, setPrototype, size

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

arrayBuffer

protected final NativeArrayBuffer arrayBuffer

Many view objects can share the same backing array

offset

protected final int offset

The offset, in bytes, from the start of the backing array

byteLength

protected final int byteLength

The length, in bytes, of the portion of the backing array that we use

MAX_INSTANCE_ID

protected static final int MAX_INSTANCE_ID

See Also:

• Constant Field Values

Constructor Details

NativeArrayBufferView

public NativeArrayBufferView()

NativeArrayBufferView

protected NativeArrayBufferView(NativeArrayBuffer ab,
 int offset,
 int byteLength)

Method Details

getBuffer

public NativeArrayBuffer getBuffer()

Return the buffer that backs this view.

getByteOffset

public int getByteOffset()

Return the offset in bytes from the start of the buffer that this view represents.

getByteLength

public int getByteLength()

Return the length, in bytes, of the part of the buffer that this view represents.

useLittleEndian

protected static boolean useLittleEndian()

isArg

protected static boolean isArg(Object[] args,
 int i)

getMaxInstanceId

protected int getMaxInstanceId()

Description copied from class: IdScriptableObject

Get maximum id findInstanceIdInfo can generate.

Overrides:

getMaxInstanceId in class IdScriptableObject

getInstanceIdName

protected String getInstanceIdName(int id)

Description copied from class: IdScriptableObject

Map id back to property name it defines.

Overrides:

getInstanceIdName in class IdScriptableObject

getInstanceIdValue

protected Object getInstanceIdValue(int id)

Description copied from class: IdScriptableObject

Get id value. * If id value is constant, descendant can call cacheIdValue to store * value in the permanent cache. * Default implementation creates IdFunctionObject instance for given id * and cache its value

Overrides:

getInstanceIdValue in class IdScriptableObject

findInstanceIdInfo

protected int findInstanceIdInfo(String s)

Description copied from class: IdScriptableObject

Map name to id of instance property. Should return 0 if not found or the result of IdScriptableObject.instanceIdInfo(int, int).

Overrides:

findInstanceIdInfo in class IdScriptableObject

get

public Object get(Symbol key,
 Scriptable start)

Description copied from class: ScriptableObject

Another version of Get that supports Symbol keyed properties.

Specified by:

get in interface SymbolScriptable

Overrides:

get in class IdScriptableObject