Class JSMaterializedInvokeTargetableNode

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.access.JSTargetableNode

com.oracle.truffle.js.nodes.instrumentation.JSMaterializedInvokeTargetableNode

All Implemented Interfaces:

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

public abstract class JSMaterializedInvokeTargetableNode
extends JSTargetableNode

Materialized nodes used by MaterializedInvokeNode to report JS function values to the instrumentation framework. By default, InvokeNode evaluates its target node in two separate steps: first, the node is evaluated to retrieve the target value. Then, the same node is evaluated via executeWithTarget() to retrieve the JS function instance to be called. The second evaluation via executeWithTarget() causes a read event (e.g., property read) that will be detected by the instrumentation framework. Since the target is already evaluated, such read event will however miss its target value, resulting in a wrong series of instrumentation events. The materialized nodes in this class internally re-evaluate the target value provided via executeWithTarget() using the internal EchoTargetValueNode . In this way, the instrumentation framework is able to trace target and report it correctly as an onInput value.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	JSMaterializedInvokeTargetableNode.EchoTargetValueNode	Instrumentable node reporting to the instrumentation framework any value provided to executeWithTarget().

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 JavaScriptNode

INTERMEDIATE_VALUE

Constructor Summary

Constructors

Constructor	Description
JSMaterializedInvokeTargetableNode()

Method Summary

Modifier and Type	Method	Description
static JSTargetableNode	createFor(JSTargetableNode target)

Methods inherited from class JSTargetableNode

createWrapper, evaluateReceiver, evaluateTarget, executeDoubleWithTarget, executeIntWithTarget, executeWithTarget, getTarget

Methods inherited from class JavaScriptNode

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

Methods inherited from class 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 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, getNodeObject, materializeInstrumentableNodes

Constructor Details

JSMaterializedInvokeTargetableNode

public JSMaterializedInvokeTargetableNode()

Method Details

createFor

public static JSTargetableNode createFor(JSTargetableNode target)