java/java-impl/src/com/intellij/psi/impl/light/LightEmptyImplementsList.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.light;
  17
  18 import com.intellij.openapi.fileTypes.StdFileTypes;
  19 import com.intellij.psi.*;
  20 import org.jetbrains.annotations.NotNull;
  21
  22 /**
  23  * @author max
  24  */
  25 public class LightEmptyImplementsList extends LightElement implements PsiReferenceList {
  26   public LightEmptyImplementsList(PsiManager manager) {
  27     super(manager, StdFileTypes.JAVA.getLanguage());
  28   }
  29
  30   public String toString() {
  31     return "PsiReferenceList";
  32   }
  33
  34   public String getText() {
  35     return "";
  36   }
  37
  38   public void accept(@NotNull PsiElementVisitor visitor) {
  39     if (visitor instanceof JavaElementVisitor) {
  40       ((JavaElementVisitor)visitor).visitReferenceList(this);
  41     }
  42     else {
  43       visitor.visitElement(this);
  44     }
  45   }
  46
  47   public PsiElement copy() {
  48     return this;
  49   }
  50
  51   @NotNull
  52   public PsiJavaCodeReferenceElement[] getReferenceElements() {
  53     return PsiJavaCodeReferenceElement.EMPTY_ARRAY;
  54   }
  55
  56   @NotNull
  57   public PsiClassType[] getReferencedTypes() {
  58     return PsiClassType.EMPTY_ARRAY;
  59   }
  60
  61   public Role getRole() {
  62     return Role.IMPLEMENTS_LIST;
  63   }
  64 }