com.claritysys.jvm.classfile
Class CpEntry

java.lang.Object
  com.claritysys.jvm.classfile.CpEntry

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

CpClass, CpNameAndType, CpRef, CpString, CpUtf8, CpValue1, CpValue2

public abstract class CpEntry
extends java.lang.Object
implements java.lang.Cloneable

An entry in the constant pool for a ClassFile.

Field Summary

static byte	TAG_CLASS Tag bytes, from [vmspec2 4.4].
static byte	TAG_DOUBLE
static byte	TAG_FIELDREF
static byte	TAG_FLOAT
static byte	TAG_INTEGER
static byte	TAG_INTERFACE_METHODREF
static byte	TAG_LONG
static byte	TAG_METHODREF
static byte	TAG_NAME_AND_TYPE
static byte	TAG_STRING
static byte	TAG_UTF8

Constructor Summary

CpEntry(ConstantPool pool, byte tag, int hash)
Create a new CpEntry in the given pool, with the given hashcode.

Method Summary

java.lang.Object	clone() Clone the entry (shallow copy).
void	computeHash() Signal the entry to recompute (and store) its hashcode.
int	getIndex() Get this entry's index in the constant pool.
byte	getTag() Return the type of entry, one of the TAG_XXX constants, as specified in [vmspec2 4.4].
int	hashCode() Return the hash code of this entry.
java.lang.String	toJavaString() Convert the entry to a String as it would appear in a Java declaration.

Methods inherited from class java.lang.Object

equals, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

TAG_CLASS

public static final byte TAG_CLASS

Tag bytes, from [vmspec2 4.4].

See Also:

Constant Field Values

TAG_FIELDREF

public static final byte TAG_FIELDREF

See Also:

Constant Field Values

TAG_METHODREF

public static final byte TAG_METHODREF

See Also:

Constant Field Values

TAG_INTERFACE_METHODREF

public static final byte TAG_INTERFACE_METHODREF

See Also:

Constant Field Values

TAG_STRING

public static final byte TAG_STRING

See Also:

Constant Field Values

TAG_INTEGER

public static final byte TAG_INTEGER

See Also:

Constant Field Values

TAG_FLOAT

public static final byte TAG_FLOAT

See Also:

Constant Field Values

TAG_LONG

public static final byte TAG_LONG

See Also:

Constant Field Values

TAG_DOUBLE

public static final byte TAG_DOUBLE

See Also:

Constant Field Values

TAG_NAME_AND_TYPE

public static final byte TAG_NAME_AND_TYPE

See Also:

Constant Field Values

TAG_UTF8

public static final byte TAG_UTF8

See Also:

Constant Field Values

Constructor Detail

CpEntry

public CpEntry(ConstantPool pool,
               byte tag,
               int hash)

Create a new CpEntry in the given pool, with the given hashcode.

Parameters:

pool - The constant pool to which the entry is being added.

tag - The pool entry type, as one of the TAG_XXX constants.

hash - The hashcode of the entry.

Method Detail

hashCode

public final int hashCode()

Return the hash code of this entry.

Overrides:

hashCode in class java.lang.Object

computeHash

public void computeHash()

Signal the entry to recompute (and store) its hashcode.

The default does nothing.

getIndex

public final int getIndex()

Get this entry's index in the constant pool.

getTag

public final byte getTag()

Return the type of entry, one of the TAG_XXX constants, as specified in [vmspec2 4.4]. These are constants for the subclasses.

toJavaString

public java.lang.String toJavaString()

Convert the entry to a String as it would appear in a Java declaration.

clone

public java.lang.Object clone()

Clone the entry (shallow copy).

Overrides:

clone in class java.lang.Object

Returns: