001    /*
002     * Copyright 2010-2015 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.kotlin.load.java.components;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.kotlin.load.java.structure.JavaAnnotation;
022    import org.jetbrains.kotlin.load.java.structure.JavaAnnotationOwner;
023    import org.jetbrains.kotlin.name.FqName;
024    
025    import java.util.Collection;
026    import java.util.Collections;
027    
028    public interface ExternalAnnotationResolver {
029        ExternalAnnotationResolver EMPTY = new ExternalAnnotationResolver() {
030            @Nullable
031            @Override
032            public JavaAnnotation findExternalAnnotation(@NotNull JavaAnnotationOwner owner, @NotNull FqName fqName) {
033                return null;
034            }
035    
036            @NotNull
037            @Override
038            public Collection<JavaAnnotation> findExternalAnnotations(@NotNull JavaAnnotationOwner owner) {
039                return Collections.emptyList();
040            }
041        };
042    
043        @Nullable
044        JavaAnnotation findExternalAnnotation(@NotNull JavaAnnotationOwner owner, @NotNull FqName fqName);
045    
046        @NotNull
047        Collection<JavaAnnotation> findExternalAnnotations(@NotNull JavaAnnotationOwner owner);
048    }