/* ClassInfoType Copyright (C) 1998-2002 Jochen Hoenicke.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; see the file COPYING.LESSER.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id$
 */

package net.sf.jode.type;
import net.sf.jode.bytecode.ClassInfo;
import net.sf.jode.bytecode.TypeSignature;
import net.sf.jode.util.SimpleMap;
import net.sf.jode.GlobalOptions;

import java.lang.reflect.Modifier;
import java.io.IOException;

///#def COLLECTIONS java.util
import java.util.Map;
///#enddef

/**
 * This class is the type representing a class loaded from a ClassPath.<p>
 *
 * @author Jochen Hoenicke */
public class ClassInfoType extends ClassType {
    ClassInfo clazz;
    ClassType superClass = null;
    ClassType[] interfaces = null;

    public ClassInfo getClazz() {
        return clazz;
    }

    public ClassInfoType(ClassInfo clazz, Type[] generics, 
	    		 GenericDeclarer outerClass) {
        super(TC_CLASS, clazz.getName(), outerClass);
	
	this.clazz = clazz;
	try {
	    clazz.load(ClassInfo.HIERARCHY);
	} catch (IOException ex) {
	    clazz.guess(ClassInfo.HIERARCHY);
	    GlobalOptions.err.println
		("Can't get full class hierarchy for "+clazz+
		 " types may be incorrect.");
	    GlobalOptions.err.println(ex.toString());
	}

	String signature = clazz.getSignature();
	
	if (signature.length() == 0) {
	    /* This is only true for java.lang.Object, each other
	     * class needs at least a super class.
	     */
	    return;
	}

	genericInstances = generics;
	if (generics != null) {
	    /* parse generic names */
	    genericNames = TypeSignature.getGenericNames(signature);
	    if (generics.length != genericNames.length)
		throw new IllegalArgumentException
		    ("Wrong number of generic parameters");
	}
    }
    
    public ClassInfoType(ClassInfo clazz, Type[] generics) {
	this(clazz, generics, null);
    }

    public boolean isUnknown() {
	return clazz.isGuessed();
    }

    public boolean isFinal() {
	return Modifier.isFinal(clazz.getModifiers());
    }

    public boolean isInterface() {
	return clazz.isInterface();
    }

    public ClassType getSuperClass() {
	String signature = clazz.getSignature();
	if (clazz.isInterface() || signature.length() == 0)
	    return null;
	if (superClass == null) {
	    String superSig = TypeSignature.getSuperSignature(signature);
	    superClass = (ClassType) tType(clazz.getClassPath(), this, superSig); 
	}
	return superClass;
    }

    public ClassType[] getInterfaces() {
	if (interfaces == null) {
	    String sig = clazz.getSignature();
	    if (sig.length() == 0)
		return EMPTY_IFACES;
	    String[] ifaceSigs = 
		TypeSignature.getIfaceSignatures(sig);
	    if (ifaceSigs.length == 0)
		interfaces = EMPTY_IFACES;
	    else {
		interfaces = new ClassType[ifaceSigs.length];
		for (int i=0; i < interfaces.length; i++)
		    interfaces[i] = (ClassType) 
			Type.tType(clazz.getClassPath(), this, ifaceSigs[i]);
	    }
	}
	return interfaces;
    }

    public ClassInfo getClassInfo() {
	return clazz;
    }

    public boolean equals(Object o) {
	if (o instanceof ClassInfoType)
	    return ((ClassInfoType) o).clazz == clazz;
	return super.equals(o);
    }
}