net.sf.rej.java.constantpool
Class ConstantPoolInfo

java.lang.Object
  net.sf.rej.java.constantpool.ConstantPoolInfo

Direct Known Subclasses:

ClassInfo, DoubleInfo, FloatInfo, IntegerInfo, LongInfo, NameAndTypeInfo, RefInfo, StringInfo, UTF8Info

public abstract class ConstantPoolInfo
extends java.lang.Object

ConstantPoolInfo is the superclass for all constant pool items.

Author:

Sami Koivu

Field Summary

static int	CLASS
static int	DOUBLE
static int	FIELD_REF
static int	FLOAT
static int	INTEGER
static int	INTERFACE_METHOD_REF
static int	LONG
static int	METHOD_REF
static int	NAME_AND_TYPE
static int	STRING
static int	UTF8

Method Summary

static ConstantPoolInfo	getCPI(ByteParser parser, ConstantPool pool) Parse a constant pool info item from a byte parser.
abstract byte[]	getData() Return the data of this entry in the form that it can be written to a class file.
int	getType() Return the type of this ConstantPoolInfo instance.
abstract java.lang.String	getTypeString() Return a String describing the type of this instance.
java.lang.String	getValue() Return a String representation of the value of this constant pool entry.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CLASS

public static final int CLASS

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Constant Field Values

FIELD_REF

public static final int FIELD_REF

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Constant Field Values

METHOD_REF

public static final int METHOD_REF

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Constant Field Values

INTERFACE_METHOD_REF

public static final int INTERFACE_METHOD_REF

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Constant Field Values

STRING

public static final int STRING

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Constant Field Values

INTEGER

public static final int INTEGER

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Constant Field Values

FLOAT

public static final int FLOAT

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Constant Field Values

LONG

public static final int LONG

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Constant Field Values

DOUBLE

public static final int DOUBLE

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Constant Field Values

NAME_AND_TYPE

public static final int NAME_AND_TYPE

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Constant Field Values

UTF8

public static final int UTF8

See Also:

Constant Field Values

Method Detail

getCPI

public static ConstantPoolInfo getCPI(ByteParser parser,
                                      ConstantPool pool)

Parse a constant pool info item from a byte parser.

Parameters:

parser - ByteParser providing the data.

pool - ConstantPool to be passed on the the ConstantPoolInfo object.

Returns:

A subclass of ConstantPoolInfo of the correct type.

getType

public int getType()

Return the type of this ConstantPoolInfo instance. The int value returned corresponds to the public constants defined in this class and also to the byte value that is written to the class file.

Returns:

int type value of this instance.

getValue

public java.lang.String getValue()

Return a String representation of the value of this constant pool entry. Each subclass overwrites this method and returns a value that makes sense for it's context.

Returns:

String value of this entry

getData

public abstract byte[] getData()

Return the data of this entry in the form that it can be written to a class file.

Returns:

byte[] array with data

getTypeString

public abstract java.lang.String getTypeString()

Return a String describing the type of this instance.

Returns:

The type of this entry as a String.