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 * 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.

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package com.sun.tools.internal.ws.processor.modeler.annotation;

import javax.annotation.processing.ProcessingEnvironment;

import javax.lang.model.element.Name;

import javax.lang.model.element.TypeElement;

import javax.lang.model.type.ArrayType;

import javax.lang.model.type.DeclaredType;

import javax.lang.model.type.PrimitiveType;

import javax.lang.model.type.TypeKind;

import javax.lang.model.type.TypeMirror;

import java.util.ArrayList;

import java.util.Collection;

/**

 * @author dkohlert

 */

public class TypeMonikerFactory {

    public static TypeMoniker getTypeMoniker(TypeMirror typeMirror) {

        if (typeMirror == null)

            throw new NullPointerException();

        if (typeMirror.getKind().isPrimitive())

            return new PrimitiveTypeMoniker((PrimitiveType) typeMirror);

        else if (typeMirror.getKind().equals(TypeKind.ARRAY))

            return new ArrayTypeMoniker((ArrayType) typeMirror);

        else if (typeMirror.getKind().equals(TypeKind.DECLARED))

            return new DeclaredTypeMoniker((DeclaredType) typeMirror);

        return getTypeMoniker(typeMirror.toString());

    }

    public static TypeMoniker getTypeMoniker(String typeName) {

        return new StringMoniker(typeName);

    }

    static class ArrayTypeMoniker implements TypeMoniker {

        private TypeMoniker arrayType;

        public ArrayTypeMoniker(ArrayType type) {

            arrayType = TypeMonikerFactory.getTypeMoniker(type.getComponentType());

        }

        public TypeMirror create(ProcessingEnvironment apEnv) {

            return apEnv.getTypeUtils().getArrayType(arrayType.create(apEnv));

        }

    }

    static class DeclaredTypeMoniker implements TypeMoniker {

        private Name typeDeclName;

        private Collection<TypeMoniker> typeArgs = new ArrayList<TypeMoniker>();

        public DeclaredTypeMoniker(DeclaredType type) {

            typeDeclName = ((TypeElement) type.asElement()).getQualifiedName();

            for (TypeMirror arg : type.getTypeArguments())

                typeArgs.add(TypeMonikerFactory.getTypeMoniker(arg));

        }

        public TypeMirror create(ProcessingEnvironment apEnv) {

            TypeElement typeDecl = apEnv.getElementUtils().getTypeElement(typeDeclName);

            TypeMirror[] tmpArgs = new TypeMirror[typeArgs.size()];

            int idx = 0;

            for (TypeMoniker moniker : typeArgs)

                tmpArgs[idx++] = moniker.create(apEnv);

            return apEnv.getTypeUtils().getDeclaredType(typeDecl, tmpArgs);

        }

    }

    static class PrimitiveTypeMoniker implements TypeMoniker {

        private TypeKind kind;

        public PrimitiveTypeMoniker(PrimitiveType type) {

            kind = type.getKind();

        }

        public TypeMirror create(ProcessingEnvironment apEnv) {

            return apEnv.getTypeUtils().getPrimitiveType(kind);

        }

    }

    static class StringMoniker implements TypeMoniker {

        private String typeName;

        public StringMoniker(String typeName) {

            this.typeName = typeName;

        }

        public TypeMirror create(ProcessingEnvironment apEnv) {

            return apEnv.getTypeUtils().getDeclaredType(apEnv.getElementUtils().getTypeElement(typeName));

        }

    }

}