org.apache.bcel.generic
Class JsrInstruction

java.lang.Object
  org.apache.bcel.generic.Instruction
      org.apache.bcel.generic.BranchInstruction
          org.apache.bcel.generic.JsrInstruction

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, InstructionTargeter, StackProducer, TypedInstruction, UnconditionalBranch

Direct Known Subclasses:

JSR, JSR_W

public abstract class JsrInstruction
extends BranchInstruction
implements UnconditionalBranch, TypedInstruction, StackProducer

Super class for JSR - Jump to subroutine

Version:

$Id: JsrInstruction.java 386056 2006-03-15 11:31:56Z tcurdt $

Author:

M. Dahm

See Also:

Serialized Form

Field Summary

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

index, position, target

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

length, opcode

Constructor Summary

JsrInstruction()
Empty constructor needed for the Class.newInstance() statement in Instruction.readInstruction().

JsrInstruction(short opcode, InstructionHandle target)

Method Summary

Type	getType(ConstantPoolGen cp)
InstructionHandle	physicalSuccessor() Returns an InstructionHandle to the physical successor of this JsrInstruction.

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

containsTarget, dispose, dump, getIndex, getTarget, getTargetOffset, getTargetOffset, initFromFile, notifyTarget, setTarget, toString, updatePosition, updateTarget

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

accept, consumeStack, copy, equals, getComparator, getLength, getName, getOpcode, produceStack, readInstruction, setComparator, toString, toString

Methods inherited from class java.lang.Object

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

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

produceStack

Constructor Detail

JsrInstruction

JsrInstruction(short opcode,
               InstructionHandle target)

JsrInstruction

JsrInstruction()

Empty constructor needed for the Class.newInstance() statement in Instruction.readInstruction(). Not to be used otherwise.

Method Detail

getType

public Type getType(ConstantPoolGen cp)

Specified by:

getType in interface TypedInstruction

Returns:

return address type

physicalSuccessor

public InstructionHandle physicalSuccessor()

Returns an InstructionHandle to the physical successor of this JsrInstruction. For this method to work, this JsrInstruction object must not be shared between multiple InstructionHandle objects! Formally, there must not be InstructionHandle objects i, j where i != j and i.getInstruction() == this == j.getInstruction().

Returns:

an InstructionHandle to the "next" instruction that will be executed when RETurned from a subroutine.