de.fub.bytecode.generic
Class JSR

java.lang.Object
  |
  +--de.fub.bytecode.generic.Instruction
        |
        +--de.fub.bytecode.generic.BranchInstruction
              |
              +--de.fub.bytecode.generic.JsrInstruction
                    |
                    +--de.fub.bytecode.generic.JSR

All Implemented Interfaces:

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

public class JSR

extends JsrInstruction

implements VariableLengthInstruction

JSR - Jump to subroutine

Version:

$Id: JSR.java,v 1.9 2001/07/03 11:52:14 ehaase Exp $

Author:

M. Dahm

See Also:

Serialized Form

Fields inherited from class de.fub.bytecode.generic.BranchInstruction

index, position, target

Fields inherited from class de.fub.bytecode.generic.Instruction

length, opcode

Constructor Summary

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 de.fub.bytecode.generic.JsrInstruction

getType, physicalSuccessor

Methods inherited from class de.fub.bytecode.generic.BranchInstruction

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

Methods inherited from class de.fub.bytecode.generic.Instruction

consumeStack, consumeStack, copy, getLength, getOpcode, getTag, produceStack, produceStack, readInstruction, toString, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.fub.bytecode.generic.StackProducer

produceStack

Constructor Detail

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

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

Following copied from class: de.fub.bytecode.generic.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.

Overrides:

accept in class Instruction

Parameters:

v - Visitor object