java/java-impl/src/com/intellij/psi/impl/source/PsiAnnotationMethodImpl.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.psi.impl.source;
  17
  18 import com.intellij.lang.ASTNode;
  19 import com.intellij.openapi.diagnostic.Logger;
  20 import com.intellij.openapi.util.text.StringUtil;
  21 import com.intellij.psi.*;
  22 import com.intellij.psi.impl.java.stubs.PsiMethodStub;
  23 import com.intellij.psi.impl.source.tree.ChildRole;
  24 import com.intellij.util.PatchedSoftReference;
  25 import org.jetbrains.annotations.NonNls;
  26 import org.jetbrains.annotations.NotNull;
  27
  28 /**
  29  * @author ven
  30  */
  31 public class PsiAnnotationMethodImpl extends PsiMethodImpl implements PsiAnnotationMethod {
  32   private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.PsiAnnotationMethodImpl");
  33   private PatchedSoftReference<PsiAnnotationMemberValue> myCachedDefaultValue = null;
  34
  35   public PsiAnnotationMethodImpl(final PsiMethodStub stub) {
  36     super(stub);
  37   }
  38
  39   public PsiAnnotationMethodImpl(final ASTNode node) {
  40     super(node);
  41   }
  42
  43   public boolean hasModifierProperty(@NotNull String name) {
  44     return PsiModifier.ABSTRACT.equals(name) || PsiModifier.PUBLIC.equals(name) || super.hasModifierProperty(name);
  45   }
  46
  47   protected void dropCached() {
  48     myCachedDefaultValue = null;
  49   }
  50
  51   public PsiAnnotationMemberValue getDefaultValue() {
  52     final PsiMethodStub stub = getStub();
  53     if (stub != null) {
  54       final String text = stub.getDefaultValueText();
  55       if (StringUtil.isEmpty(text)) return null;
  56
  57       if (myCachedDefaultValue != null) {
  58         final PsiAnnotationMemberValue value = myCachedDefaultValue.get();
  59         if (value != null) {
  60           return value;
  61         }
  62       }
  63
  64       @NonNls final String annoText = "@interface _Dummy_ { Class foo() default " + text + "; }";
  65       final PsiJavaFile file = (PsiJavaFile)PsiFileFactory.getInstance(getProject()).createFileFromText("a.java", annoText);
  66       final PsiAnnotationMemberValue value = ((PsiAnnotationMethod)file.getClasses()[0].getMethods()[0]).getDefaultValue();
  67       myCachedDefaultValue = new PatchedSoftReference<PsiAnnotationMemberValue>(value);
  68       return value;
  69     }
  70
  71     myCachedDefaultValue = null;
  72
  73     final ASTNode node = getNode().findChildByRole(ChildRole.ANNOTATION_DEFAULT_VALUE);
  74     if (node == null) return null;
  75     return (PsiAnnotationMemberValue)node.getPsi();
  76   }
  77
  78   @NonNls
  79   public String toString() {
  80     return "PsiAnnotationMethod:" + getName();
  81   }
  82
  83   public final void accept(@NotNull PsiElementVisitor visitor) {
  84     if (visitor instanceof JavaElementVisitor) {
  85       ((JavaElementVisitor)visitor).visitAnnotationMethod(this);
  86     }
  87     else {
  88       visitor.visitElement(this);
  89     }
  90   }
  91 }