Package org.apache.bcel.generic

Class DCONST

java.lang.Object

org.apache.bcel.generic.Instruction

org.apache.bcel.generic.DCONST

All Implemented Interfaces:

java.lang.Cloneable, ConstantPushInstruction, PushInstruction, StackProducer, TypedInstruction

public class DCONST
extends Instruction
implements ConstantPushInstruction

DCONST - Push 0.0 or 1.0, other values cause an exception

 Stack: ... -> ...,
 

Field Summary

Fields

Modifier and Type	Field	Description
private double	value

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

EMPTY_ARRAY, length, opcode

Constructor Summary

Constructors

Constructor	Description
DCONST()	Empty constructor needed for Instruction.readInstruction.
DCONST(double f)	Constructs a DCONST instruction.

Method Summary

Modifier and Type	Method	Description
void	accept(Visitor v)	Call corresponding visitor method(s).
Type	getType(ConstantPoolGen cp)	Gets the type associated with this instruction.
java.lang.Number	getValue()	Gets the value to push onto the stack.

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

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

Field Detail

value

private final double value

Constructor Detail

DCONST

DCONST()

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

DCONST

public DCONST(double f)

Constructs a DCONST instruction.

Parameters:

f - the constant value (must be 0.0 or 1.0).

Throws:

ClassGenException - if f is not 0.0 or 1.0.

Method Detail

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, that is, the most specific visitXXX() call comes last.

Specified by:

accept in class Instruction

Parameters:

v - Visitor object.

getType

public Type getType(ConstantPoolGen cp)

Description copied from interface: TypedInstruction

Gets the type associated with this instruction.

Specified by:

getType in interface TypedInstruction

Parameters:

cp - the constant pool generator.

Returns:

Type.DOUBLE.

getValue

public java.lang.Number getValue()

Description copied from interface: ConstantPushInstruction

Gets the value to push onto the stack.

Specified by:

getValue in interface ConstantPushInstruction

Returns:

the value to push onto the stack.