dk.brics.tajs.flowgraph.jsnodes

Class ReturnNode

java.lang.Object

dk.brics.tajs.flowgraph.AbstractNode

dk.brics.tajs.flowgraph.jsnodes.Node

dk.brics.tajs.flowgraph.jsnodes.ReturnNode

All Implemented Interfaces:

IReturnNode

public class ReturnNode
extends Node
implements IReturnNode

Return node.

return [v]

Must be the only node in its block.

Field Summary

Fields inherited from class dk.brics.tajs.flowgraph.AbstractNode

EXCEPTION_REG, FIRST_ORDINARY_REG, NO_VALUE, RETURN_REG

Constructor Summary

Constructors

Constructor and Description
ReturnNode(int value_reg, SourceLocation location) Constructs a new return node.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	canThrowExceptions() Returns true if this node may throw exceptions.
int	getReturnValueRegister() Returns the return value register.
void	setReturnValueRegister(int value_var) Sets the return value register.
String	toString() Returns a string description of this node.
<ArgType> void	visitBy(NodeVisitor<ArgType> v, ArgType a) Visits this node with the given visitor.

Methods inherited from class dk.brics.tajs.flowgraph.jsnodes.Node

visitBy

Methods inherited from class dk.brics.tajs.flowgraph.AbstractNode

check, getBlock, getDuplicateOf, getIndex, getSourceLocation, isArtificial, isDead, isRegistersDone, setArtificial, setBlock, setDead, setDuplicateOf, setIndex, setRegistersDone

Methods inherited from class java.lang.Object

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

Constructor Detail

ReturnNode

public ReturnNode(int value_reg,
          SourceLocation location)

Constructs a new return node. Variable number AbstractNode.NO_VALUE represents absent value (implicitly 'undefined').

Method Detail

canThrowExceptions

public boolean canThrowExceptions()

Description copied from class: AbstractNode

Returns true if this node may throw exceptions.

Specified by:

canThrowExceptions in class AbstractNode

getReturnValueRegister

public int getReturnValueRegister()

Returns the return value register. Variable number AbstractNode.NO_VALUE represents absent value (implicitly 'undefined').

Specified by:

getReturnValueRegister in interface IReturnNode

setReturnValueRegister

public void setReturnValueRegister(int value_var)

Sets the return value register.

toString

public String toString()

Description copied from class: AbstractNode

Returns a string description of this node.

Specified by:

toString in class AbstractNode

visitBy

public <ArgType> void visitBy(NodeVisitor<ArgType> v,
                     ArgType a)

Description copied from class: Node

Visits this node with the given visitor.

Specified by:

visitBy in class Node