Package org.apache.bcel.generic

Class LDC

java.lang.Object

org.apache.bcel.generic.Instruction

org.apache.bcel.generic.CPInstruction

org.apache.bcel.generic.LDC

All Implemented Interfaces:

Cloneable, ExceptionThrower, IndexedInstruction, PushInstruction, StackProducer, TypedInstruction

Direct Known Subclasses:

LDC_W

public class LDC
extends CPInstruction
implements PushInstruction, ExceptionThrower

LDC - Push item from constant pool.

Stack: ... -> ..., item

Field Summary

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

index

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

length, opcode

Constructor Summary

Constructors

Constructor	Description
LDC(int index)

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.
Class<?>[]	getExceptions()
Type	getType(ConstantPoolGen cpg)
Object	getValue(ConstantPoolGen cpg)
protected void	initFromFile(ByteSequence bytes, boolean wide)	Read needed data (e.g.
void	setIndex(int index)	Set the index to constant pool and adjust size.
protected void	setSize()

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

getIndex, toString, toString

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

consumeStack, copy, equals, getComparator, getLength, getName, getOpcode, hashCode, isValidByte, isValidShort, produceStack, readInstruction, setComparator, 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 Detail

LDC

public LDC(int index)

Method Detail

setSize

protected final void setSize()

dump

public void dump(DataOutputStream out)
          throws IOException

Dump instruction as byte code to stream out.

Overrides:

dump in class CPInstruction

Parameters:

out - Output stream

Throws:

IOException

setIndex

public final void setIndex(int index)

Set the index to constant pool and adjust size.

Specified by:

setIndex in interface IndexedInstruction

Overrides:

setIndex in class CPInstruction

Parameters:

index - in constant pool.

initFromFile

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

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

Overrides:

initFromFile in class CPInstruction

Parameters:

bytes - input stream

wide - wide prefix?

Throws:

IOException - may be thrown if the implementation needs to read data from the file

getValue

public Object getValue(ConstantPoolGen cpg)

getType

public Type getType(ConstantPoolGen cpg)

Specified by:

getType in interface TypedInstruction

Overrides:

getType in class CPInstruction

Returns:

type related with this instruction.

getExceptions

public Class<?>[] getExceptions()

Specified by:

getExceptions in interface ExceptionThrower

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