jbet

Class Descriptor

java.lang.Object

jbet.Descriptor

public final class Descriptor
extends java.lang.Object

An instance of this class describes the number and type of the parameters of the method described by the instance, and the method's return type. This file contains fields that hold the types of the parameters and the return type (if any) of the method that is described by an instance of this class. This file also includes code that: 1) initializes the fields 2) TBD $Id: Descriptor.java,v 1.9 2003/09/09 17:31:53 areisse Exp $

Since:

JDK 1.1.8

Field Summary

Fields

Modifier and Type	Field and Description
Type[]	args
Type	ret
static Descriptor	returnInt
static Descriptor	Void

Constructor Summary

Constructors

Constructor and Description
Descriptor()
Descriptor(Descriptor d) Construct a new Descriptor based on a template
Descriptor(java.lang.String str) A constructor for Descriptor (describing a method M).
Descriptor(Type r)
Descriptor(Type p1, Type r)

Method Summary

Methods

Modifier and Type	Method and Description
int	count() for invokeinterface
java.lang.String	declaration()
boolean	equals(java.lang.Object o) Test if the descriptor argument has the same (argument / return) types as the (calling) descriptor.
int	hashCode() Implements hashCode for Descriptor by calculating a hash of the return type and the parameters of the method in that order.
Descriptor	relocate_new(java.util.Hashtable subs) Relocate a copy of the current descriptor (the current descriptor is unchanged).
void	relocate(java.util.Hashtable subs) Relocate all of the type references used by this descriptor
java.lang.String	toString() Convert the internal representation of the types associated with the method to a string stored in Descriptor.stringCache

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

args

public Type[] args

ret

public Type ret

Void

public static final Descriptor Void

returnInt

public static final Descriptor returnInt

Constructor Detail

Descriptor

public Descriptor(Type p1,
          Type r)

Descriptor

public Descriptor(Type r)

Descriptor

public Descriptor()

Descriptor

public Descriptor(Descriptor d)

Construct a new Descriptor based on a template

Parameters:

d - the template method Descriptor.

See Also:

and Snippit.relocate

Descriptor

public Descriptor(java.lang.String str)
           throws ParseException

A constructor for Descriptor (describing a method M).

Parameters:

str - the params of M in "(typeof param0, typeof param1, ...) ret type" format

Throws:

ParseException

Method Detail

relocate

public void relocate(java.util.Hashtable subs)

Relocate all of the type references used by this descriptor

Parameters:

subs - A table of string substitution pairs.

See Also:

ClassRep.relocate

relocate_new

public Descriptor relocate_new(java.util.Hashtable subs)

Relocate a copy of the current descriptor (the current descriptor is unchanged).

Parameters:

subs - a table of string substitution pairs.

Returns:

the new (relocated) Descriptor.

See Also:

and Snippit.relocate

count

public int count()

for invokeinterface

Returns:

the number of words needed to store the method's parameters

toString

public java.lang.String toString()

Convert the internal representation of the types associated with the method to a string stored in Descriptor.stringCache

Overrides:

toString in class java.lang.Object

Returns:

a string depicting the types of the (refering) method

equals

public boolean equals(java.lang.Object o)

Test if the descriptor argument has the same (argument / return) types as the (calling) descriptor.

Overrides:

equals in class java.lang.Object

Parameters:

o - a method descriptor (return false otherwise)

Returns:

true two descriptors have the same (argument / return) types, false otherwise

hashCode

public int hashCode()

Implements hashCode for Descriptor by calculating a hash of the return type and the parameters of the method in that order.

Overrides:

hashCode in class java.lang.Object

Returns:

the value hash(ret) * 101^(n+1) + hash(param0) * 101^(n) + ... + hash(paramn)

declaration

public java.lang.String declaration()