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 *

 * 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 java.util.HashSet;

import java.util.Set;

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.CTypeInfo;

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

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.DElementPattern;

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

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

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

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

/**

 * Builds {@link RawTypeSet} for RELAX NG.

 *

 * @author Kohsuke Kawaguchi

 */

public final class RawTypeSetBuilder extends DPatternWalker {

    public static RawTypeSet build( RELAXNGCompiler compiler, DPattern contentModel, Multiplicity mul ) {

        RawTypeSetBuilder builder = new RawTypeSetBuilder(compiler,mul);

        contentModel.accept(builder);

        return builder.create();

    }

    /**

     * Multiplicity of the property.

     */

    private Multiplicity mul;

    /**

     * Accumulates discovered {@link RawTypeSet.Ref}s.

     */

    private final Set<RawTypeSet.Ref> refs = new HashSet<RawTypeSet.Ref>();

    private final RELAXNGCompiler compiler;

    public RawTypeSetBuilder(RELAXNGCompiler compiler,Multiplicity mul) {

        this.mul = mul;

        this.compiler = compiler;

    }

    private RawTypeSet create() {

        return new RawTypeSet(refs,mul);

    }

    public Void onAttribute(DAttributePattern p) {

        // attributes form their own properties

        return null;

    }

    public Void onElement(DElementPattern p) {

        CTypeInfo[] tis = compiler.classes.get(p);

        if(tis!=null) {

            for( CTypeInfo ti : tis )

                refs.add(new CClassInfoRef((CClassInfo)ti));

        } else {

            // TODO

            assert false;

        }

        return null;

    }

    public Void onZeroOrMore(DZeroOrMorePattern p) {

        mul = mul.makeRepeated();

        return super.onZeroOrMore(p);

    }

    public Void onOneOrMore(DOneOrMorePattern p) {

        mul = mul.makeRepeated();

        return super.onOneOrMore(p);

    }

    /**

     * For {@link CClassInfo}s that map to elements.

     */

    private static final class CClassInfoRef extends RawTypeSet.Ref {

        private final CClassInfo ci;

        CClassInfoRef(CClassInfo ci) {

            this.ci = ci;

            assert ci.isElement();

        }

        protected ID id() {

            return ID.NONE;

        }

        protected boolean isListOfValues() {

            return false;

        }

        protected RawTypeSet.Mode canBeType(RawTypeSet parent) {

            return RawTypeSet.Mode.SHOULD_BE_TYPEREF;

        }

        protected void toElementRef(CReferencePropertyInfo prop) {

            prop.getElements().add(ci);

        }

        protected CTypeRef toTypeRef(CElementPropertyInfo ep) {

            return new CTypeRef(ci,ci.getElementName(),ci.getTypeName(),false,null);

        }

    }

}