org.apache.bcel.generic
Class IINC

java.lang.Object
  org.apache.bcel.generic.Instruction
      org.apache.bcel.generic.LocalVariableInstruction
          org.apache.bcel.generic.IINC

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, IndexedInstruction, TypedInstruction

public class IINC
extends LocalVariableInstruction

IINC - Increment local variable by constant

Version:

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

Author:

M. Dahm

See Also:

Serialized Form

Field Summary

private int	c
private boolean	wide

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

n

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

length, opcode

Constructor Summary

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

IINC(int n, int c)

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.
int	getIncrement()
Type	getType(ConstantPoolGen cp) Returns the type associated with the instruction - in case of ALOAD or ASTORE Type.OBJECT is returned.
protected void	initFromFile(ByteSequence bytes, boolean wide) Read needed data (e.g.
void	setIncrement(int c) Set increment factor.
void	setIndex(int n) Set index of local variable.
private void	setWide()
java.lang.String	toString(boolean verbose) Long output format: <name of opcode> "["<opcode number>"]" "("<length of instruction>")" "<"< local variable index>">"

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

getCanonicalTag, getIndex

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

consumeStack, copy, dispose, 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

Field Detail

wide

private boolean wide

c

private int c

Constructor Detail

IINC

IINC()

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

IINC

public IINC(int n,
            int c)

Parameters:

n - index of local variable

c - increment factor

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 LocalVariableInstruction

Parameters:

out - Output stream

Throws:

java.io.IOException

setWide

private final void setWide()

initFromFile

protected void initFromFile(ByteSequence bytes,
                            boolean wide)
                     throws java.io.IOException

Read needed data (e.g. index) from file.

Overrides:

initFromFile in class LocalVariableInstruction

Parameters:

bytes - byte sequence to read from

wide - "wide" instruction flag

Throws:

java.io.IOException

toString

public java.lang.String toString(boolean verbose)

Description copied from class: LocalVariableInstruction

Long output format: <name of opcode> "["<opcode number>"]" "("<length of instruction>")" "<"< local variable index>">"

Overrides:

toString in class LocalVariableInstruction

Parameters:

verbose - long/short format switch

Returns:

mnemonic for instruction

setIndex

public final void setIndex(int n)

Set index of local variable.

Specified by:

setIndex in interface IndexedInstruction

Overrides:

setIndex in class LocalVariableInstruction

getIncrement

public final int getIncrement()

Returns:

increment factor

setIncrement

public final void setIncrement(int c)

Set increment factor.

getType

public Type getType(ConstantPoolGen cp)

Description copied from class: LocalVariableInstruction

Returns the type associated with the instruction - in case of ALOAD or ASTORE Type.OBJECT is returned. This is just a bit incorrect, because ALOAD and ASTORE may work on every ReferenceType (including Type.NULL) and ASTORE may even work on a ReturnaddressType .

Specified by:

getType in interface TypedInstruction

Overrides:

getType in class LocalVariableInstruction

Returns:

int type

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