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
017package org.jetbrains.jet.lang.resolve.java.kt;
018
019import com.intellij.psi.PsiAnnotation;
020import org.jetbrains.annotations.NotNull;
021import org.jetbrains.annotations.Nullable;
022
023public 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}