javassist.CtNewClass Maven / Gradle / Ivy
/*
* Javassist, a Java-bytecode translator toolkit.
* Copyright (C) 1999- Shigeru Chiba. All Rights Reserved.
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. Alternatively, the contents of this file may be used under
* the terms of the GNU Lesser General Public License Version 2.1 or later,
* or the Apache License Version 2.0.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*/
package javassist;
import java.io.DataOutputStream;
import java.io.IOException;
import javassist.bytecode.ClassFile;
class CtNewClass extends CtClassType {
/* true if the class is an interface.
*/
protected boolean hasConstructor;
CtNewClass(String name, ClassPool cp,
boolean isInterface, CtClass superclass) {
super(name, cp);
wasChanged = true;
String superName;
if (isInterface || superclass == null)
superName = null;
else
superName = superclass.getName();
classfile = new ClassFile(isInterface, name, superName);
if (isInterface && superclass != null)
classfile.setInterfaces(new String[] { superclass.getName() });
setModifiers(Modifier.setPublic(getModifiers()));
hasConstructor = isInterface;
}
protected void extendToString(StringBuffer buffer) {
if (hasConstructor)
buffer.append("hasConstructor ");
super.extendToString(buffer);
}
public void addConstructor(CtConstructor c)
throws CannotCompileException
{
hasConstructor = true;
super.addConstructor(c);
}
public void toBytecode(DataOutputStream out)
throws CannotCompileException, IOException
{
if (!hasConstructor)
try {
inheritAllConstructors();
hasConstructor = true;
}
catch (NotFoundException e) {
throw new CannotCompileException(e);
}
super.toBytecode(out);
}
/**
* Adds constructors inhrited from the super class.
*
* After this method is called, the class inherits all the
* constructors from the super class. The added constructor
* calls the super's constructor with the same signature.
*/
public void inheritAllConstructors()
throws CannotCompileException, NotFoundException
{
CtClass superclazz;
CtConstructor[] cs;
superclazz = getSuperclass();
cs = superclazz.getDeclaredConstructors();
int n = 0;
for (int i = 0; i < cs.length; ++i) {
CtConstructor c = cs[i];
int mod = c.getModifiers();
if (isInheritable(mod, superclazz)) {
CtConstructor cons
= CtNewConstructor.make(c.getParameterTypes(),
c.getExceptionTypes(), this);
cons.setModifiers(mod & (Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE));
addConstructor(cons);
++n;
}
}
if (n < 1)
throw new CannotCompileException(
"no inheritable constructor in " + superclazz.getName());
}
private boolean isInheritable(int mod, CtClass superclazz) {
if (Modifier.isPrivate(mod))
return false;
if (Modifier.isPackage(mod)) {
String pname = getPackageName();
String pname2 = superclazz.getPackageName();
if (pname == null)
return pname2 == null;
else
return pname.equals(pname2);
}
return true;
}
}