Class NativeArrayBuffer
- java.lang.Object
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- org.mozilla.javascript.ScriptableObject
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- org.mozilla.javascript.IdScriptableObject
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- org.mozilla.javascript.typedarrays.NativeArrayBuffer
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- All Implemented Interfaces:
java.io.Serializable,ConstProperties,DebuggableObject,IdFunctionCall,Scriptable,SymbolScriptable
public class NativeArrayBuffer extends IdScriptableObject
A NativeArrayBuffer is the backing buffer for a typed array. Used inside JavaScript code, it implements the ArrayBuffer interface. Used directly from Java, it simply holds a byte array.- See Also:
- Serialized Form
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Nested Class Summary
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Nested classes/interfaces inherited from class org.mozilla.javascript.ScriptableObject
ScriptableObject.KeyComparator
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Field Summary
Fields Modifier and Type Field Description static java.lang.StringCLASS_NAME-
Fields inherited from class org.mozilla.javascript.ScriptableObject
CONST, DONTENUM, EMPTY, PERMANENT, READONLY, UNINITIALIZED_CONST
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Fields inherited from interface org.mozilla.javascript.Scriptable
NOT_FOUND
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Constructor Summary
Constructors Constructor Description NativeArrayBuffer()Create an empty buffer.NativeArrayBuffer(double len)Create a buffer of the specified length in bytes.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.ObjectexecIdCall(IdFunctionObject f, Context cx, Scriptable scope, Scriptable thisObj, java.lang.Object[] args)'thisObj' will be null if invoked as constructor, in which case * instance of Scriptable should be returned.protected voidfillConstructorProperties(IdFunctionObject ctor)protected intfindInstanceIdInfo(java.lang.String s)Map name to id of instance property.protected intfindPrototypeId(java.lang.String s)byte[]getBuffer()Return the actual bytes that back the buffer.java.lang.StringgetClassName()Return the name of the class.protected java.lang.StringgetInstanceIdName(int id)Map id back to property name it defines.protected java.lang.ObjectgetInstanceIdValue(int id)Get id value.intgetLength()Get the number of bytes in the buffer.protected intgetMaxInstanceId()Get maximum id findInstanceIdInfo can generate.static voidinit(Context cx, Scriptable scope, boolean sealed)protected voidinitPrototypeId(int id)NativeArrayBufferslice(double s, double e)Return a new buffer that represents a slice of this buffer's content, starting at position "start" and ending at position "end".-
Methods inherited from class org.mozilla.javascript.IdScriptableObject
activatePrototypeMap, addIdFunctionProperty, defaultGet, defaultHas, defaultPut, defineOwnProperty, delete, delete, ensureType, exportAsJSClass, findInstanceIdInfo, findPrototypeId, get, get, getAttributes, getAttributes, getOwnPropertyDescriptor, has, has, hasPrototypeMap, initPrototypeConstructor, initPrototypeMethod, initPrototypeMethod, initPrototypeMethod, initPrototypeValue, initPrototypeValue, instanceIdInfo, put, put, setAttributes, setInstanceIdAttributes, setInstanceIdValue
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Methods inherited from class org.mozilla.javascript.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, 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
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Field Detail
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CLASS_NAME
public static final java.lang.String CLASS_NAME
- See Also:
- Constant Field Values
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Method Detail
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getClassName
public java.lang.String getClassName()
Description copied from class:ScriptableObjectReturn the name of the class.This is typically the same name as the constructor. Classes extending ScriptableObject must implement this abstract method.
- Specified by:
getClassNamein interfaceScriptable- Specified by:
getClassNamein classScriptableObject
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init
public static void init(Context cx, Scriptable scope, boolean sealed)
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getLength
public int getLength()
Get the number of bytes in the buffer.
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getBuffer
public byte[] getBuffer()
Return the actual bytes that back the buffer. This is a reference to the real buffer, so changes to bytes here will be reflected in the actual object and all its views.
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slice
public NativeArrayBuffer slice(double s, double e)
Return a new buffer that represents a slice of this buffer's content, starting at position "start" and ending at position "end". Both values will be "clamped" as per the JavaScript spec so that invalid values may be passed and will be adjusted up or down accordingly. This method will return a new buffer that contains a copy of the original buffer. Changes there will not affect the content of the buffer.- Parameters:
s- the position where the new buffer will starte- the position where it will end
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execIdCall
public java.lang.Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope, Scriptable thisObj, java.lang.Object[] args)
Description copied from class:IdScriptableObject'thisObj' will be null if invoked as constructor, in which case * instance of Scriptable should be returned.- Specified by:
execIdCallin interfaceIdFunctionCall- Overrides:
execIdCallin classIdScriptableObject
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initPrototypeId
protected void initPrototypeId(int id)
- Overrides:
initPrototypeIdin classIdScriptableObject
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findPrototypeId
protected int findPrototypeId(java.lang.String s)
- Overrides:
findPrototypeIdin classIdScriptableObject
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fillConstructorProperties
protected void fillConstructorProperties(IdFunctionObject ctor)
- Overrides:
fillConstructorPropertiesin classIdScriptableObject
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getMaxInstanceId
protected int getMaxInstanceId()
Description copied from class:IdScriptableObjectGet maximum id findInstanceIdInfo can generate.- Overrides:
getMaxInstanceIdin classIdScriptableObject
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getInstanceIdName
protected java.lang.String getInstanceIdName(int id)
Description copied from class:IdScriptableObjectMap id back to property name it defines.- Overrides:
getInstanceIdNamein classIdScriptableObject
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getInstanceIdValue
protected java.lang.Object getInstanceIdValue(int id)
Description copied from class:IdScriptableObjectGet 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:
getInstanceIdValuein classIdScriptableObject
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findInstanceIdInfo
protected int findInstanceIdInfo(java.lang.String s)
Description copied from class:IdScriptableObjectMap name to id of instance property. Should return 0 if not found or the result ofIdScriptableObject.instanceIdInfo(int, int).- Overrides:
findInstanceIdInfoin classIdScriptableObject
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