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 * 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,

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

import javax.xml.namespace.QName;

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

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

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

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

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

import com.sun.tools.internal.xjc.reader.RawTypeSet;

import com.sun.xml.internal.bind.v2.model.core.ID;

import com.sun.xml.internal.rngom.digested.DAttributePattern;

import com.sun.xml.internal.rngom.digested.DChoicePattern;

import com.sun.xml.internal.rngom.digested.DMixedPattern;

import com.sun.xml.internal.rngom.digested.DOneOrMorePattern;

import com.sun.xml.internal.rngom.digested.DOptionalPattern;

import com.sun.xml.internal.rngom.digested.DPattern;

import com.sun.xml.internal.rngom.digested.DPatternWalker;

import com.sun.xml.internal.rngom.digested.DZeroOrMorePattern;

import static com.sun.tools.internal.xjc.model.CElementPropertyInfo.CollectionMode.REPEATED_ELEMENT;

/**

 * Recursively visits {@link DPattern} and

 * decides which patterns to map to properties.

 *

 * @author Kohsuke Kawaguchi

 */

final class ContentModelBinder extends DPatternWalker {

    private final RELAXNGCompiler compiler;

    private final CClassInfo clazz;

    private boolean insideOptional = false;

    private int iota=1;

    public ContentModelBinder(RELAXNGCompiler compiler,CClassInfo clazz) {

        this.compiler = compiler;

        this.clazz = clazz;

    }

    public Void onMixed(DMixedPattern p) {

        throw new UnsupportedOperationException();

    }

    public Void onChoice(DChoicePattern p) {

        boolean old = insideOptional;

        insideOptional = true;

        super.onChoice(p);

        insideOptional = old;

        return null;

    }

    public Void onOptional(DOptionalPattern p) {

        boolean old = insideOptional;

        insideOptional = true;

        super.onOptional(p);

        insideOptional = old;

        return null;

    }

    public Void onZeroOrMore(DZeroOrMorePattern p) {

        return onRepeated(p,true);

    }

    public Void onOneOrMore(DOneOrMorePattern p) {

        return onRepeated(p,insideOptional);

    }

    private Void onRepeated(DPattern p,boolean optional) {

        RawTypeSet rts = RawTypeSetBuilder.build(compiler, p, optional? Multiplicity.STAR : Multiplicity.PLUS);

        if(rts.canBeTypeRefs==RawTypeSet.Mode.SHOULD_BE_TYPEREF) {

            CElementPropertyInfo prop = new CElementPropertyInfo(

                    calcName(p),REPEATED_ELEMENT,ID.NONE,null,null,null,p.getLocation(),!optional);

            rts.addTo(prop);

            clazz.addProperty(prop);

        } else {

            CReferencePropertyInfo prop = new CReferencePropertyInfo(

                    calcName(p),true,!optional,false/*TODO*/,null,null,p.getLocation(), false, false, false);

            rts.addTo(prop);

            clazz.addProperty(prop);

        }

        return null;

    }

    public Void onAttribute(DAttributePattern p) {

        // TODO: support multiple names

        QName name = p.getName().listNames().iterator().next();

        CAttributePropertyInfo ap = new CAttributePropertyInfo(

           calcName(p), null,null/*TODO*/, p.getLocation(), name,

                p.getChild().accept(compiler.typeUseBinder), null,

                !insideOptional);

        clazz.addProperty(ap);

        return null;

    }

    private String calcName(DPattern p) {

        // TODO

        return "field"+(iota++);

    }

}