Class JSIsNullOrUndefinedNode

java.lang.Object

com.oracle.truffle.api.nodes.Node

com.oracle.truffle.js.nodes.JavaScriptBaseNode

com.oracle.truffle.js.nodes.JavaScriptNode

com.oracle.truffle.js.nodes.unary.JSUnaryNode

com.oracle.truffle.js.nodes.unary.JSIsNullOrUndefinedNode

All Implemented Interfaces:

com.oracle.truffle.api.instrumentation.InstrumentableNode, com.oracle.truffle.api.nodes.NodeInterface, Cloneable

public abstract class JSIsNullOrUndefinedNode
extends JSUnaryNode

This node optimizes the check whether the argument is null or undefined. Used from the JSEqualNode for optimizing a == undefined; and a == null;

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.truffle.api.nodes.Node

com.oracle.truffle.api.nodes.Node.Child, com.oracle.truffle.api.nodes.Node.Children

Nested classes/interfaces inherited from interface com.oracle.truffle.api.instrumentation.InstrumentableNode

com.oracle.truffle.api.instrumentation.InstrumentableNode.WrapperNode

Field Summary

Fields inherited from class com.oracle.truffle.js.nodes.unary.JSUnaryNode

operandNode

Fields inherited from class com.oracle.truffle.js.nodes.JavaScriptNode

INTERMEDIATE_VALUE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JSIsNullOrUndefinedNode(JavaScriptNode operand, boolean isUndefined, boolean isLeft)

Method Summary

Modifier and Type	Method	Description
protected JavaScriptNode	copyUninitialized(Set<Class<? extends com.oracle.truffle.api.instrumentation.Tag>> materializedTags)
static JSIsNullOrUndefinedNode	create()
static JSIsNullOrUndefinedNode	create(JavaScriptNode value)
static JSIsNullOrUndefinedNode	createFromEquals(JavaScriptNode left, JavaScriptNode right)
protected static boolean	doBigInt(BigInt operand)
protected static boolean	doJSObject(Object object)
protected static boolean	doJSObjectCached(Object object, Class<?> cachedClass)
protected boolean	doJSValueOrForeign(Object operand, com.oracle.truffle.api.interop.InteropLibrary interop)
protected static boolean	doNull(Object operand)
protected static boolean	doSafeInteger(SafeInteger operand)
protected static boolean	doSymbol(Symbol operand)
protected static boolean	doTString(com.oracle.truffle.api.strings.TruffleString operand)
protected static boolean	doUndefined(Object operand)
abstract boolean	executeBoolean(Object input)
boolean	hasTag(Class<? extends com.oracle.truffle.api.instrumentation.Tag> tag)
boolean	isResultAlwaysOfType(Class<?> clazz)
com.oracle.truffle.api.instrumentation.InstrumentableNode	materializeInstrumentableNodes(Set<Class<? extends com.oracle.truffle.api.instrumentation.Tag>> materializedTags)

Methods inherited from class com.oracle.truffle.js.nodes.unary.JSUnaryNode

expressionToString, getNodeObject, getOperand

Methods inherited from class com.oracle.truffle.js.nodes.JavaScriptNode

addCallTag, addExpressionTag, addRootBodyTag, addStatementTag, cloneUninitialized, cloneUninitialized, copy, createWrapper, execute, executeBoolean, executeDouble, executeInt, executeVoid, findBlockScopeNode, getSourceSection, hasSourceSection, isInstrumentable, onReplace, setSourceSection, setSourceSection, toString, transferSourceSection, transferSourceSectionAddExpressionTag, transferSourceSectionAndTags

Methods inherited from class com.oracle.truffle.js.nodes.JavaScriptBaseNode

getJSContext, getLanguage, getLanguageOptions, getRealm, hasOverloadedOperators, reportLoopCount, reportLoopCount

Methods inherited from class com.oracle.truffle.api.nodes.Node

accept, adoptChildren, atomic, atomic, deepCopy, getChildren, getCost, getDebugProperties, getDescription, getEncapsulatingSourceSection, getLock, getParent, getRootNode, insert, insert, isAdoptable, isSafelyReplaceableBy, notifyInserted, replace, replace, reportPolymorphicSpecialize, reportReplace

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.oracle.truffle.api.instrumentation.InstrumentableNode

createProbe, findNearestNodeAt, findNearestNodeAt, findProbe

Constructor Details

JSIsNullOrUndefinedNode

protected JSIsNullOrUndefinedNode(JavaScriptNode operand,
 boolean isUndefined,
 boolean isLeft)

Method Details

executeBoolean

public abstract boolean executeBoolean(Object input)

hasTag

public boolean hasTag(Class<? extends com.oracle.truffle.api.instrumentation.Tag> tag)

Specified by:

hasTag in interface com.oracle.truffle.api.instrumentation.InstrumentableNode

Overrides:

hasTag in class JavaScriptNode

materializeInstrumentableNodes

public com.oracle.truffle.api.instrumentation.InstrumentableNode materializeInstrumentableNodes(Set<Class<? extends com.oracle.truffle.api.instrumentation.Tag>> materializedTags)

doNull

protected static boolean doNull(Object operand)

doUndefined

protected static boolean doUndefined(Object operand)

doSymbol

protected static boolean doSymbol(Symbol operand)

doTString

protected static boolean doTString(com.oracle.truffle.api.strings.TruffleString operand)

doSafeInteger

protected static boolean doSafeInteger(SafeInteger operand)

doBigInt

protected static boolean doBigInt(BigInt operand)

doJSObjectCached

protected static boolean doJSObjectCached(Object object,
 Class<?> cachedClass)

doJSObject

protected static boolean doJSObject(Object object)

doJSValueOrForeign

protected boolean doJSValueOrForeign(Object operand,
 com.oracle.truffle.api.interop.InteropLibrary interop)

createFromEquals

public static JSIsNullOrUndefinedNode createFromEquals(JavaScriptNode left,
 JavaScriptNode right)

create

public static JSIsNullOrUndefinedNode create(JavaScriptNode value)

create

public static JSIsNullOrUndefinedNode create()

isResultAlwaysOfType

public boolean isResultAlwaysOfType(Class<?> clazz)

Overrides:

isResultAlwaysOfType in class JavaScriptNode

copyUninitialized

protected JavaScriptNode copyUninitialized(Set<Class<? extends com.oracle.truffle.api.instrumentation.Tag>> materializedTags)

Overrides:

copyUninitialized in class JavaScriptNode