Class ConstantEmptyPrototypeArray

java.lang.Object

com.oracle.truffle.js.runtime.array.ScriptArray

com.oracle.truffle.js.runtime.array.DynamicArray

com.oracle.truffle.js.runtime.array.dyn.AbstractConstantArray

com.oracle.truffle.js.runtime.array.dyn.AbstractConstantEmptyArray

com.oracle.truffle.js.runtime.array.dyn.ConstantEmptyPrototypeArray

public final class ConstantEmptyPrototypeArray
extends AbstractConstantEmptyArray

This array type is reserved for Array.prototype and Object.prototype. It ensures an Assumption is invalidated if the Array.prototype and Object.prototype is ever assigned an indexed property.

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.truffle.js.runtime.array.DynamicArray

DynamicArray.DynamicArrayCache

Nested classes/interfaces inherited from class com.oracle.truffle.js.runtime.array.ScriptArray

ScriptArray.CreateWritableProfileAccess, ScriptArray.DefaultIterator, ScriptArray.SetLengthProfileAccess

Field Summary

Fields inherited from class com.oracle.truffle.js.runtime.array.DynamicArray

cache, INTEGRITY_LEVEL_FROZEN, INTEGRITY_LEVEL_FROZEN_LENGTH_READONLY, INTEGRITY_LEVEL_MASK, INTEGRITY_LEVEL_NONE, INTEGRITY_LEVEL_NONE_LENGTH_READONLY, INTEGRITY_LEVEL_NOT_EXTENSIBLE, INTEGRITY_LEVEL_NOT_EXTENSIBLE_LENGTH_READONLY, INTEGRITY_LEVEL_SEALED, INTEGRITY_LEVEL_SEALED_LENGTH_READONLY, INTEGRITY_LEVELS, integrityLevel, LENGTH_NOT_WRITABLE, LENGTH_WRITABLE_MASK

Fields inherited from class com.oracle.truffle.js.runtime.array.ScriptArray

EMPTY_OBJECT_ARRAY

Method Summary

Modifier and Type	Method	Description
ScriptArray	addRangeImpl(JSDynamicObject object, long offset, int size)	This method grows the array by adding more elements of a given size.
static ScriptArray	createConstantEmptyPrototypeArray()
AbstractDoubleArray	createWriteableDouble(JSDynamicObject object, long index, double value, com.oracle.truffle.api.nodes.Node node, ScriptArray.CreateWritableProfileAccess profile)
AbstractIntArray	createWriteableInt(JSDynamicObject object, long index, int value, com.oracle.truffle.api.nodes.Node node, ScriptArray.CreateWritableProfileAccess profile)
AbstractJSObjectArray	createWriteableJSObject(JSDynamicObject object, long index, JSDynamicObject value, com.oracle.truffle.api.nodes.Node node, ScriptArray.CreateWritableProfileAccess profile)
AbstractObjectArray	createWriteableObject(JSDynamicObject object, long index, Object value, com.oracle.truffle.api.nodes.Node node, ScriptArray.CreateWritableProfileAccess profile)
ScriptArray	removeRangeImpl(JSDynamicObject object, long start, long end)	This function deletes all elements in the range from [start..end[.
ScriptArray	setLengthImpl(JSDynamicObject object, long length, com.oracle.truffle.api.nodes.Node node, ScriptArray.SetLengthProfileAccess profile)
protected DynamicArray	withIntegrityLevel(int newIntegrityLevel)

Methods inherited from class com.oracle.truffle.js.runtime.array.dyn.AbstractConstantEmptyArray

cloneArray, deleteElementImpl, firstElementIndex, getCapacity, getElementInBounds, hasElement, hasHoles, isHolesType, lastElementIndex, lengthInt, nextElementIndex, ownPropertyKeys, previousElementIndex, setCapacity

Methods inherited from class com.oracle.truffle.js.runtime.array.dyn.AbstractConstantArray

getElement, getElementInBounds, isInBoundsFast, length, setElementImpl

Methods inherited from class com.oracle.truffle.js.runtime.array.DynamicArray

createCache, freeze, isExtensible, isFrozen, isLengthNotWritable, isSealed, maybePreinitializeCache, preventExtensions, seal, setIntegrityLevel, setLengthNotWritable, toString

Methods inherited from class com.oracle.truffle.js.runtime.array.ScriptArray

addRange, asIterable, canDeleteElement, cast, createConstantArray, createConstantEmptyArray, deleteElement, hasHolesOrUnused, isInstance, makeMultiRangeList, makeRangeList, nextPower, ownPropertyKeysContiguous, ownPropertyKeysHoles, removeRange, removeRange, setElement, setLength, setLength, shiftRange, shiftRangeImpl, toArray, traceArrayTransition, traceWrite, valueIsByte

Methods inherited from class java.lang.Object

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

Method Details

createConstantEmptyPrototypeArray

public static ScriptArray createConstantEmptyPrototypeArray()

setLengthImpl

public ScriptArray setLengthImpl(JSDynamicObject object,
 long length,
 com.oracle.truffle.api.nodes.Node node,
 ScriptArray.SetLengthProfileAccess profile)

Specified by:

setLengthImpl in class ScriptArray

createWriteableInt

public AbstractIntArray createWriteableInt(JSDynamicObject object,
 long index,
 int value,
 com.oracle.truffle.api.nodes.Node node,
 ScriptArray.CreateWritableProfileAccess profile)

Overrides:

createWriteableInt in class AbstractConstantEmptyArray

createWriteableDouble

public AbstractDoubleArray createWriteableDouble(JSDynamicObject object,
 long index,
 double value,
 com.oracle.truffle.api.nodes.Node node,
 ScriptArray.CreateWritableProfileAccess profile)

Overrides:

createWriteableDouble in class AbstractConstantEmptyArray

createWriteableJSObject

public AbstractJSObjectArray createWriteableJSObject(JSDynamicObject object,
 long index,
 JSDynamicObject value,
 com.oracle.truffle.api.nodes.Node node,
 ScriptArray.CreateWritableProfileAccess profile)

Overrides:

createWriteableJSObject in class AbstractConstantEmptyArray

createWriteableObject

public AbstractObjectArray createWriteableObject(JSDynamicObject object,
 long index,
 Object value,
 com.oracle.truffle.api.nodes.Node node,
 ScriptArray.CreateWritableProfileAccess profile)

Overrides:

createWriteableObject in class AbstractConstantEmptyArray

removeRangeImpl

public ScriptArray removeRangeImpl(JSDynamicObject object,
 long start,
 long end)

Description copied from class: ScriptArray

This function deletes all elements in the range from [start..end[. This is equivalent to shifting the whole array, starting with element index end, by end-start positions to the left. Can be used by e.g. Array.prototype.splice;

Specified by:

removeRangeImpl in class ScriptArray

addRangeImpl

public ScriptArray addRangeImpl(JSDynamicObject object,
 long offset,
 int size)

Description copied from class: ScriptArray

This method grows the array by adding more elements of a given size. An offset parameter can be used to specify where the new elements have to be added (starting from zero). The operation is equivalent to shifting (right) the whole array or its part as defined by the offset parameter.

Specified by:

addRangeImpl in class ScriptArray

Parameters:

offset - starting offset position

size - size of the inserted empty array

Returns:

a ScriptArray instance with the new size

withIntegrityLevel

protected DynamicArray withIntegrityLevel(int newIntegrityLevel)

Specified by:

withIntegrityLevel in class DynamicArray