Package org.checkerframework.dataflow.cfg.node

Class NullChkNode

java.lang.Object

org.checkerframework.dataflow.cfg.node.Node

org.checkerframework.dataflow.cfg.node.NullChkNode

All Implemented Interfaces:

org.plumelib.util.UniqueId

public class NullChkNode
extends Node

A node for the unary 'nullchk' operation (generated by the Java compiler):

   <*nullchk*>expression
 

Field Summary

Fields

Modifier and Type	Field	Description
protected final Node	operand	The operand of the null check
protected final Tree	tree	The entire tree of the null check

Fields inherited from class org.checkerframework.dataflow.cfg.node.Node

block, inSource, lvalue, type

Constructor Summary

Constructors

Constructor	Description
NullChkNode(Tree tree, Node operand)	Constructs a NullChkNode.

Method Summary

Modifier and Type	Method	Description
<R, P> R	accept(NodeVisitor<R,P> visitor, P p)	Accept method of the visitor pattern.
boolean	equals(@Nullable Object obj)
Node	getOperand()
Collection<Node>	getOperands()	Returns a collection containing all of the operand Nodes of this Node.
Tree	getTree()	Returns the Tree in the abstract syntax tree, or null if no corresponding tree exists.
int	hashCode()
String	toString()

Methods inherited from class org.checkerframework.dataflow.cfg.node.Node

getBlock, getInSource, getTransitiveOperands, getType, getUid, isLValue, nodeCollectionToString, setBlock, setInSource, setLValue, toStringDebug

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.plumelib.util.UniqueId

getClassAndUid

Field Details

tree

protected final Tree tree

The entire tree of the null check

operand

protected final Node operand

The operand of the null check

Constructor Details

NullChkNode

public NullChkNode(Tree tree,
 Node operand)

Constructs a NullChkNode.

Parameters:

tree - the nullchk tree

operand - the operand of the null check

Method Details

getOperand

public Node getOperand()

getTree

public Tree getTree()

Description copied from class: Node

Returns the Tree in the abstract syntax tree, or null if no corresponding tree exists. For instance, this is the case for an ImplicitThisNode.

Specified by:

getTree in class Node

Returns:

the corresponding Tree or null

accept

public <R,
P> R accept(NodeVisitor<R,P> visitor,
 P p)

Description copied from class: Node

Accept method of the visitor pattern.

Specified by:

accept in class Node

Type Parameters:

R - result type of the operation

P - parameter type

Parameters:

visitor - the visitor to be applied to this node

p - the parameter for this operation

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(@Nullable Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getOperands

@SideEffectFree
public Collection<Node> getOperands()

Description copied from class: Node

Returns a collection containing all of the operand Nodes of this Node.

Specified by:

getOperands in class Node

Returns:

a collection containing all of the operand Nodes of this Node