com.oracle.truffle.sl.nodes.local

Class SLScopedNode

java.lang.Object

com.oracle.truffle.api.nodes.Node

com.oracle.truffle.sl.nodes.local.SLScopedNode

All Implemented Interfaces:

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

Direct Known Subclasses:

SLStatementNode

public abstract class SLScopedNode
extends com.oracle.truffle.api.nodes.Node

The SL implementation of NodeLibrary provides fast access to local variables. It's used by tools like debugger, profiler, tracer, etc. To provide good performance, we cache write nodes that declare variables and use them in the interop contract.

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

Constructor Summary

Constructors

Constructor and Description
SLScopedNode()

Method Summary

Modifier and Type	Method and Description
com.oracle.truffle.api.nodes.Node	findBlock() Find block of this node.
protected int	getVisibleVariablesIndexOnEnter() Provide the index that determines variables on node enter.
boolean	hasScope(com.oracle.truffle.api.frame.Frame frame) We do provide a scope.
void	setVisibleVariablesIndexOnEnter(int index) Set the index to the the block's variables that determine variables belonging into this scope (excluding parent scopes) on node enter.
void	setVisibleVariablesIndexOnExit(int index) Similar to SLScopedNode.setVisibleVariablesIndexOnEnter(int), but determines variables on node exit.

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

accept, adoptChildren, atomic, atomic, copy, deepCopy, getChildren, getCost, getDebugProperties, getDescription, getEncapsulatingSourceSection, getLock, getParent, getRootNode, getSourceSection, insert, insert, isAdoptable, isSafelyReplaceableBy, notifyInserted, onReplace, replace, replace, reportPolymorphicSpecialize, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SLScopedNode

public SLScopedNode()

Method Detail

hasScope

public boolean hasScope(com.oracle.truffle.api.frame.Frame frame)

We do provide a scope.

findBlock

public final com.oracle.truffle.api.nodes.Node findBlock()

Find block of this node. Traverse the parent chain and find the first SLBlockNode. If none is found, RootNode is returned.

Returns:

the block node, always non-null. Either SLBlockNode, or SLRootNode.

setVisibleVariablesIndexOnEnter

public final void setVisibleVariablesIndexOnEnter(int index)

Set the index to the the block's variables that determine variables belonging into this scope (excluding parent scopes) on node enter.

setVisibleVariablesIndexOnExit

public final void setVisibleVariablesIndexOnExit(int index)

Similar to SLScopedNode.setVisibleVariablesIndexOnEnter(int), but determines variables on node exit.

getVisibleVariablesIndexOnEnter

protected final int getVisibleVariablesIndexOnEnter()

Provide the index that determines variables on node enter.