/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package com.sun.tools.internal.xjc.reader;

import java.util.List;

import java.util.Map;

import java.util.HashMap;

import javax.xml.namespace.QName;

import com.sun.tools.internal.xjc.ErrorReceiver;

import com.sun.tools.internal.xjc.model.CClassInfo;

import com.sun.tools.internal.xjc.model.CPropertyInfo;

import com.sun.tools.internal.xjc.model.Model;

/**

 * Checks errors on model classes.

 *

 * <p>

 * This should be used as a {@link Ring} component.

 *

 * @author Kohsuke Kawaguchi

 */

public final class ModelChecker {

    private final Model model = Ring.get(Model.class);

    private final ErrorReceiver errorReceiver = Ring.get(ErrorReceiver.class);

    public ModelChecker() {

    }

    public void check() {

        for( CClassInfo ci : model.beans().values() )

            check(ci);

    }

    private void check( CClassInfo ci ) {

        List<CPropertyInfo> props = ci.getProperties();

        Map<QName,CPropertyInfo> collisionTable = new HashMap<QName,CPropertyInfo>();

        OUTER:

        for( int i=0; i<props.size(); i++ ) {

            CPropertyInfo p1 = props.get(i);

            if(p1.getName(true).equals("Class")) {

                errorReceiver.error(p1.locator,Messages.PROPERTY_CLASS_IS_RESERVED.format());

                continue;

            }

            QName n = p1.collectElementNames(collisionTable);

            if(n!=null) {

                CPropertyInfo p2 = collisionTable.get(n);

                if (p2.getName(true).equals(n.toString()) || p2.getName(false).equals(n.toString())) {

                    errorReceiver.error(p1.locator, Messages.DUPLICATE_ELEMENT.format(n));

                    errorReceiver.error(p2.locator, Messages.ERR_RELEVANT_LOCATION.format());

                }

            }

            for( int j=i+1; j<props.size(); j++ ) {

                if(checkPropertyCollision(p1,props.get(j)))

                    continue OUTER;

            }

            for( CClassInfo c=ci.getBaseClass(); c!=null; c=c.getBaseClass() ) {

                for( CPropertyInfo p2 : c.getProperties() )

                    if(checkPropertyCollision(p1,p2))

                        continue OUTER;

            }

        }

    }

    private boolean checkPropertyCollision(CPropertyInfo p1, CPropertyInfo p2) {

        if(!p1.getName(true).equals(p2.getName(true)))

            return false;

        errorReceiver.error(p1.locator,Messages.DUPLICATE_PROPERTY.format(p1.getName(true)));

        errorReceiver.error(p2.locator,Messages.ERR_RELEVANT_LOCATION.format());

        return true;

    }

}