org.apache.bcel.generic
Class JSR

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

All Implemented Interfaces:

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

public class JSR
extends JsrInstruction
implements VariableLengthInstruction

JSR - Jump to subroutine

Version:

$Id: JSR.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

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

JSR(InstructionHandle target)

Method Summary

void	accept(Visitor v) Call corresponding visitor method(s).
void	dump(java.io.DataOutputStream out) Dump instruction as byte code to stream out.
protected int	updatePosition(int offset, int max_offset) Called by InstructionList.setPositions when setting the position for every instruction.

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

getType, physicalSuccessor

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

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

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

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

JSR

JSR()

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

JSR

public JSR(InstructionHandle target)

Method Detail

dump

public void dump(java.io.DataOutputStream out)
          throws java.io.IOException

Dump instruction as byte code to stream out.

Overrides:

dump in class BranchInstruction

Parameters:

out - Output stream

Throws:

java.io.IOException

updatePosition

protected int updatePosition(int offset,
                             int max_offset)

Description copied from class: BranchInstruction

Called by InstructionList.setPositions when setting the position for every instruction. In the presence of variable length instructions `setPositions' performs multiple passes over the instruction list to calculate the correct (byte) positions and offsets by calling this function.

Overrides:

updatePosition in class BranchInstruction

Parameters:

offset - additional offset caused by preceding (variable length) instructions

max_offset - the maximum offset that may be caused by these instructions

Returns:

additional offset caused by possible change of this instruction's length

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, i.e., the most specific visitXXX() call comes last.

Specified by:

accept in class Instruction

Parameters:

v - Visitor object