org.checkerframework.dataflow.cfg.node

Class StringConversionNode

java.lang.Object

org.checkerframework.dataflow.cfg.node.Node

org.checkerframework.dataflow.cfg.node.StringConversionNode

public class StringConversionNode
extends Node

A node for the string conversion operation. See JLS 5.1.11 for the definition of string conversion.

A StringConversionNode does not correspond to any tree node in the parsed AST. It is introduced when a value of non-string type appears in a context that requires a String, such as in a string concatenation. A StringConversionNode should be treated as a potential call to the toString method of its operand, but does not necessarily call any method because null is converted to the string "null".

Conversion of primitive types to Strings requires first boxing and then string conversion.

Field Summary

Fields

Modifier and Type	Field and Description
protected Node	operand
protected Tree	tree

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

assignmentContext, block, inSource, lvalue, type

Constructor Summary

Constructors

Constructor and Description
StringConversionNode(Tree tree, Node operand, TypeMirror type)

Method Summary

Modifier and Type	Method and 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()
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

getAssignmentContext, getBlock, getInSource, getTransitiveOperands, getType, isLValue, setAssignmentContext, setBlock, setInSource, setLValue

Methods inherited from class java.lang.Object

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

Field Detail

tree

protected final Tree tree

operand

protected final Node operand

Constructor Detail

StringConversionNode

public StringConversionNode(Tree tree,
                            Node operand,
                            TypeMirror type)

Method Detail

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 ImplicitThisLiteralNode.

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

public Collection<Node> getOperands()

Specified by:

getOperands in class Node

Returns:

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