001    /*
002     * Copyright 2010-2013 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.jet.lang.descriptors;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.jet.lang.descriptors.annotations.Annotated;
022    import org.jetbrains.jet.lang.types.TypeSubstitutor;
023    
024    public interface DeclarationDescriptor extends Annotated, Named {
025        /**
026         * @return The descriptor that corresponds to the original declaration of this element.
027         *         A descriptor can be obtained from its original by substituting type arguments (of the declaring class
028         *         or of the element itself).
029         *         returns <code>this</code> object if the current descriptor is original itself
030         */
031        @NotNull
032        DeclarationDescriptor getOriginal();
033    
034        @Nullable
035        DeclarationDescriptor getContainingDeclaration();
036    
037        @Nullable
038        DeclarationDescriptor substitute(@NotNull TypeSubstitutor substitutor);
039    
040        <R, D> R accept(DeclarationDescriptorVisitor<R, D> visitor, D data);
041        void acceptVoid(DeclarationDescriptorVisitor<Void, Void> visitor);
042    }