Class BlockScopeNode.VirtualBlockScopeNode

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.function.NamedEvaluationTargetNode

com.oracle.truffle.js.nodes.function.BlockScopeNode

com.oracle.truffle.js.nodes.function.BlockScopeNode.VirtualBlockScopeNode

All Implemented Interfaces:

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

Enclosing class:

BlockScopeNode

public static class BlockScopeNode.VirtualBlockScopeNode
extends BlockScopeNode
implements ResumableNode

Represents a local block scope that has been merged into the function's virtual frame. Serves as metadata to reconstruct the original block structure for debugging purposes and clears the block's frame slots on leave to limit value lifetimes. Not needed for correct execution.

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.truffle.js.nodes.function.BlockScopeNode

BlockScopeNode.FrameBlockScopeNode, BlockScopeNode.VirtualBlockScopeNode

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

Nested classes/interfaces inherited from interface com.oracle.truffle.js.nodes.control.ResumableNode

ResumableNode.WithIntState, ResumableNode.WithObjectState

Field Summary

Fields

Modifier and Type	Field	Description
protected final int	end
protected final int	start

Fields inherited from class com.oracle.truffle.js.nodes.function.BlockScopeNode

block

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

INTERMEDIATE_VALUE

Fields inherited from interface com.oracle.truffle.api.nodes.RepeatingNode

BREAK_LOOP_STATUS, CONTINUE_LOOP_STATUS

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	VirtualBlockScopeNode(JavaScriptNode block, int start, int end)

Method Summary

Modifier and Type	Method	Description
com.oracle.truffle.api.frame.VirtualFrame	appendScopeFrame(com.oracle.truffle.api.frame.VirtualFrame frame)
protected JavaScriptNode	copyUninitialized(Set<Class<? extends com.oracle.truffle.api.instrumentation.Tag>> materializedTags)
void	exitScope(com.oracle.truffle.api.frame.VirtualFrame frame, boolean yield)
Object	getBlockScope(com.oracle.truffle.api.frame.VirtualFrame frame)
int	getFrameEnd()
int	getFrameStart()
boolean	isFunctionBlock()
Object	resume(com.oracle.truffle.api.frame.VirtualFrame frame, int stateSlot)
void	setBlockScope(com.oracle.truffle.api.frame.VirtualFrame frame, Object state)

Methods inherited from class com.oracle.truffle.js.nodes.function.BlockScopeNode

create, createVirtual, execute, executeRepeating, executeVoid, executeWithName, exitScope, getBlock, isResultAlwaysOfType

Methods inherited from class com.oracle.truffle.js.nodes.function.NamedEvaluationTargetNode

createWrapper

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

addCallTag, addExpressionTag, addRootBodyTag, addStatementTag, cloneUninitialized, cloneUninitialized, copy, executeBoolean, executeDouble, executeInt, expressionToString, findBlockScopeNode, getSourceSection, hasSourceSection, hasTag, 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, getNodeObject, materializeInstrumentableNodes

Methods inherited from interface com.oracle.truffle.api.nodes.RepeatingNode

executeRepeatingWithValue, initialLoopStatus, shouldContinue

Methods inherited from interface com.oracle.truffle.js.nodes.control.ResumableNode

asResumableNode, getStateSlotKind, resetState

Field Details

start

protected final int start

end

protected final int end

Constructor Details

VirtualBlockScopeNode

protected VirtualBlockScopeNode(JavaScriptNode block,
 int start,
 int end)

Method Details

appendScopeFrame

public com.oracle.truffle.api.frame.VirtualFrame appendScopeFrame(com.oracle.truffle.api.frame.VirtualFrame frame)

Specified by:

appendScopeFrame in class BlockScopeNode

exitScope

public void exitScope(com.oracle.truffle.api.frame.VirtualFrame frame,
 boolean yield)

Specified by:

exitScope in class BlockScopeNode

resume

public Object resume(com.oracle.truffle.api.frame.VirtualFrame frame,
 int stateSlot)

Specified by:

resume in interface ResumableNode

getBlockScope

public Object getBlockScope(com.oracle.truffle.api.frame.VirtualFrame frame)

Specified by:

getBlockScope in class BlockScopeNode

See Also:

• TryCatchNode.resume(com.oracle.truffle.api.frame.VirtualFrame, int)

setBlockScope

public void setBlockScope(com.oracle.truffle.api.frame.VirtualFrame frame,
 Object state)

Specified by:

setBlockScope in class BlockScopeNode

isFunctionBlock

public boolean isFunctionBlock()

Specified by:

isFunctionBlock in class BlockScopeNode

getFrameStart

public int getFrameStart()

Overrides:

getFrameStart in class BlockScopeNode

getFrameEnd

public int getFrameEnd()

Overrides:

getFrameEnd in class BlockScopeNode

copyUninitialized

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

Overrides:

copyUninitialized in class JavaScriptNode