Package org.apache.bcel.generic

Class INSTANCEOF

java.lang.Object

org.apache.bcel.generic.Instruction

org.apache.bcel.generic.CPInstruction

org.apache.bcel.generic.INSTANCEOF

All Implemented Interfaces:

java.lang.Cloneable, ExceptionThrower, IndexedInstruction, LoadClass, StackConsumer, StackProducer, TypedInstruction

public class INSTANCEOF
extends CPInstruction
implements LoadClass, ExceptionThrower, StackProducer, StackConsumer

INSTANCEOF - Determine if object is of given type

 Stack: ..., objectref -> ..., result
 

Field Summary

Fields inherited from class org.apache.bcel.generic.CPInstruction

index

Fields inherited from class org.apache.bcel.generic.Instruction

EMPTY_ARRAY, length, opcode

Constructor Summary

Constructors

Constructor	Description
INSTANCEOF()	Empty constructor needed for Instruction.readInstruction.
INSTANCEOF(int index)	Constructs an INSTANCEOF instruction.

Method Summary

Modifier and Type	Method	Description
void	accept(Visitor v)	Call corresponding visitor method(s).
java.lang.Class<?>[]	getExceptions()	Gets the exceptions that may be thrown by this instruction.
ObjectType	getLoadClassType(ConstantPoolGen cpg)	Returns the ObjectType of the referenced class or interface that may be loaded and resolved.

Methods inherited from class org.apache.bcel.generic.CPInstruction

dump, getIndex, getType, initFromFile, setIndex, toString, toString

Methods inherited from class org.apache.bcel.generic.Instruction

consumeStack, copy, dispose, equals, getComparator, getLength, getName, getOpcode, hashCode, isValidByte, isValidShort, produceStack, readInstruction, setComparator, setLength, setOpcode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.bcel.generic.LoadClass

getType

Methods inherited from interface org.apache.bcel.generic.StackConsumer

consumeStack

Methods inherited from interface org.apache.bcel.generic.StackProducer

produceStack

Constructor Detail

INSTANCEOF

INSTANCEOF()

Empty constructor needed for Instruction.readInstruction. Not to be used otherwise.

INSTANCEOF

public INSTANCEOF(int index)

Constructs an INSTANCEOF instruction.

Parameters:

index - the constant pool index.

Method Detail

accept

public void accept(Visitor v)

Call corresponding visitor method(s). The order is: Call visitor methods of implemented interfaces first, then call methods according to the class hierarchy in descending order, that is, the most specific visitXXX() call comes last.

Specified by:

accept in class Instruction

Parameters:

v - Visitor object.

getExceptions

public java.lang.Class<?>[] getExceptions()

Description copied from interface: ExceptionThrower

Gets the exceptions that may be thrown by this instruction.

Specified by:

getExceptions in interface ExceptionThrower

Returns:

the exceptions that may be thrown by this instruction.

getLoadClassType

public ObjectType getLoadClassType(ConstantPoolGen cpg)

Description copied from interface: LoadClass

Returns the ObjectType of the referenced class or interface that may be loaded and resolved.

Specified by:

getLoadClassType in interface LoadClass

Parameters:

cpg - A ConstantPoolGen.

Returns:

object type that may be loaded or null if a primitive is referenced.