Package 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:

Cloneable, InstructionTargeter, StackProducer, TypedInstruction, UnconditionalBranch, VariableLengthInstruction

public class JSR
extends JsrInstruction
implements VariableLengthInstruction

JSR - Jump to subroutine

Field Summary

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

index, position, target

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

EMPTY_ARRAY, length, opcode

Constructor Summary

Constructors

Constructor	Description
JSR()	Empty constructor needed for Instruction.readInstruction.
JSR(InstructionHandle target)

Method Summary

Modifier and Type	Method	Description
void	accept(Visitor v)	Call corresponding visitor method(s).
void	dump(DataOutputStream out)	Dump instruction as byte code to stream out.
protected int	updatePosition(int offset, int maxOffset)	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, getPosition, getTarget, getTargetOffset, getTargetOffset, initFromFile, notifyTarget, setIndex, setPosition, setTarget, toString, updateTarget

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

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

Methods inherited from class java.lang.Object

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

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

produceStack

Constructor Details

JSR

JSR()

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

JSR

public JSR(InstructionHandle target)

Method Details

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

dump

public void dump(DataOutputStream out)
          throws IOException

Dump instruction as byte code to stream out.

Overrides:

dump in class BranchInstruction

Parameters:

out - Output stream

Throws:

IOException - Thrown when an I/O exception of some sort has occurred.

updatePosition

protected int updatePosition(int offset,
 int maxOffset)

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

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

Returns:

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