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.resolve.java.kt;
018    
019    import com.intellij.psi.PsiAnnotation;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.annotations.Nullable;
022    
023    public abstract class PsiAnnotationWrapper {
024    
025        @Nullable
026        private final PsiAnnotation psiAnnotation;
027    
028        private boolean initialized = false;
029    
030        protected PsiAnnotationWrapper(@Nullable PsiAnnotation psiAnnotation) {
031            this.psiAnnotation = psiAnnotation;
032        }
033    
034        public boolean isDefined() {
035            return psiAnnotation != null;
036        }
037    
038        protected abstract void initialize();
039    
040        protected void checkInitialized () {
041            if (!initialized) {
042                initialize();
043                initialized = true;
044            }
045        }
046    
047        @NotNull
048        protected String getStringAttribute(String name, String defaultValue) {
049            return PsiAnnotationUtils.getStringAttribute(psiAnnotation, name, defaultValue);
050        }
051    
052        protected boolean getBooleanAttribute(String name, boolean defaultValue) {
053            return PsiAnnotationUtils.getBooleanAttribute(psiAnnotation, name, defaultValue);
054        }
055    
056        protected int getIntAttribute(String name, int defaultValue) {
057            return PsiAnnotationUtils.getIntAttribute(psiAnnotation, name, defaultValue);
058        }
059    }