Class LazyArray

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.AbstractConstantLazyArray

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

public class LazyArray
extends AbstractConstantLazyArray

LazyArray is a backing class for a JSArray that allows array elements to be supplied on demand (i.e., lazily) from a list generator. Whenever a lazy array is written to, the entire lazy array is enumerated and copied and loses its lazy lookup property.

Nested Class Summary

Nested classes/interfaces inherited from class DynamicArray

DynamicArray.DynamicArrayCache

Nested classes/interfaces inherited from class ScriptArray

ScriptArray.CreateWritableProfileAccess, ScriptArray.DefaultIterator, ScriptArray.SetLengthProfileAccess

Field Summary

Fields inherited from class 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 ScriptArray

EMPTY_OBJECT_ARRAY

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	LazyArray(int integrityLevel, DynamicArray.DynamicArrayCache cache)

Method Summary

Modifier and Type	Method	Description
Object	cloneArray(JSDynamicObject object)
static LazyArray	createLazyArray()
AbstractWritableArray	createWriteableObject(JSDynamicObject object, long index, Object value, com.oracle.truffle.api.nodes.Node node, ScriptArray.CreateWritableProfileAccess profile)
Object	getElementInBounds(JSDynamicObject object, int index)
Object	getElementInBounds(JSDynamicObject object, int index, ListGetNode listGetNode)
protected DynamicArray	withIntegrityLevel(int newIntegrityLevel)

Methods inherited from class AbstractConstantLazyArray

addRangeImpl, createWriteableDouble, createWriteableInt, createWriteableJSObject, deleteElementImpl, hasElement, length, lengthInt, removeRangeImpl, setLengthImpl

Methods inherited from class AbstractConstantArray

firstElementIndex, getElement, getElementInBounds, hasHoles, isInBoundsFast, lastElementIndex, nextElementIndex, previousElementIndex, setElementImpl

Methods inherited from class DynamicArray

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

Methods inherited from class ScriptArray

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

Methods inherited from class Object

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

Constructor Details

LazyArray

protected LazyArray(int integrityLevel,
 DynamicArray.DynamicArrayCache cache)

Method Details

createLazyArray

public static LazyArray createLazyArray()

withIntegrityLevel

protected DynamicArray withIntegrityLevel(int newIntegrityLevel)

Specified by:

withIntegrityLevel in class DynamicArray

getElementInBounds

public Object getElementInBounds(JSDynamicObject object,
 int index)

Specified by:

getElementInBounds in class AbstractConstantArray

getElementInBounds

public Object getElementInBounds(JSDynamicObject object,
 int index,
 ListGetNode listGetNode)

createWriteableObject

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

Specified by:

createWriteableObject in class AbstractConstantArray

cloneArray

public Object cloneArray(JSDynamicObject object)

Specified by:

cloneArray in class DynamicArray