WALA/com.ibm.wala.core/src/com/ibm/wala/classLoader/SyntheticClass.java

162 lines
3.7 KiB
Java

/*******************************************************************************
* Copyright (c) 2002 - 2006 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package com.ibm.wala.classLoader;
import java.io.Reader;
import java.util.Collection;
import java.util.Collections;
import com.ibm.wala.ipa.cha.IClassHierarchy;
import com.ibm.wala.types.TypeName;
import com.ibm.wala.types.TypeReference;
import com.ibm.wala.types.annotations.Annotation;
import com.ibm.wala.util.strings.Atom;
/**
* An {@link IClass} that exists nowhere in bytecode.
*/
public abstract class SyntheticClass implements IClass {
private final TypeReference T;
private final IClassHierarchy cha;
/**
* @param T type reference describing this class
*/
public SyntheticClass(TypeReference T, IClassHierarchy cha) {
super();
this.T = T;
this.cha = cha;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((T == null) ? 0 : T.hashCode());
result = prime * result + ((cha == null) ? 0 : cha.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof SyntheticClass))
return false;
final SyntheticClass other = (SyntheticClass) obj;
if (T == null) {
if (other.T != null)
return false;
} else if (!T.equals(other.T))
return false;
if (cha == null) {
if (other.cha != null)
return false;
} else if (!cha.equals(other.cha))
return false;
return true;
}
/**
* By default, a synthetic class is "loaded" by the primordial loader.
* Subclasses may override as necessary.
* @see com.ibm.wala.classLoader.IClass#getClassLoader()
*/
@Override
public IClassLoader getClassLoader() {
return cha.getLoader(T.getClassLoader());
}
/*
* @see com.ibm.wala.classLoader.IClass#isInterface()
*/
@Override
public boolean isInterface() {
return false;
}
/*
* @see com.ibm.wala.classLoader.IClass#isAbstract()
*/
@Override
public boolean isAbstract() {
return false;
}
/*
* These classes are generated by WALA, not by any
* compiler, therefore it always returns false
* @see com.ibm.wala.classLoader.IClass#isSynthetic()
*/
@Override
public boolean isSynthetic() {
return false;
}
/*
* @see com.ibm.wala.classLoader.IClass#getReference()
*/
@Override
public TypeReference getReference() {
return T;
}
/*
* @see com.ibm.wala.classLoader.IClass#getSourceFileName()
*/
@Override
public String getSourceFileName() {
return null;
}
@Override
public Reader getSource() {
return null;
}
/*
* @see com.ibm.wala.classLoader.IClass#isArrayClass()
*/
@Override
public boolean isArrayClass() {
return false;
}
@Override
public IClassHierarchy getClassHierarchy() {
return cha;
}
@Override
public TypeName getName() {
return getReference().getName();
}
/**
* we assume synthetic classes do not need to have multiple fields with the same name.
*/
@Override
public IField getField(Atom name, TypeName typeName) {
return getField(name);
}
@Override
public Collection<Annotation> getAnnotations() {
return Collections.emptySet();
}
}