java/java-impl/src/com/intellij/psi/impl/light/LightReferenceParameterList.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.psi.*;
  19 import com.intellij.psi.impl.PsiImplUtil;
  20 import com.intellij.openapi.fileTypes.StdFileTypes;
  21 import org.jetbrains.annotations.NotNull;
  22
  23 /**
  24  *  @author dsl
  25  */
  26 public class LightReferenceParameterList extends LightElement implements PsiReferenceParameterList {
  27   private final PsiTypeElement[] myTypeElements;
  28   private final String myText;
  29
  30   public LightReferenceParameterList(PsiManager manager, PsiTypeElement[] referenceElements) {
  31     super(manager, StdFileTypes.JAVA.getLanguage());
  32     myTypeElements = referenceElements;
  33     myText = calculateText();
  34   }
  35
  36   private String calculateText() {
  37     if (myTypeElements.length == 0) return "";
  38     final StringBuilder buffer = new StringBuilder();
  39     buffer.append("<");
  40     for (int i = 0; i < myTypeElements.length; i++) {
  41       PsiTypeElement type = myTypeElements[i];
  42       if (i > 0) {
  43         buffer.append(",");
  44       }
  45       buffer.append(type.getText());
  46     }
  47     buffer.append(">");
  48     return buffer.toString();
  49   }
  50
  51   public String toString() {
  52     return "PsiReferenceParameterList";
  53   }
  54
  55   public String getText() {
  56     return myText;
  57   }
  58
  59   public void accept(@NotNull PsiElementVisitor visitor) {
  60     if (visitor instanceof JavaElementVisitor) {
  61       ((JavaElementVisitor)visitor).visitReferenceParameterList(this);
  62     }
  63     else {
  64       visitor.visitElement(this);
  65     }
  66   }
  67
  68   public PsiElement copy() {
  69     final PsiTypeElement[] elements = new PsiTypeElement[myTypeElements.length];
  70     for (int i = 0; i < myTypeElements.length; i++) {
  71       PsiTypeElement typeElement = myTypeElements[i];
  72       elements[i] = (PsiTypeElement) typeElement.copy();
  73     }
  74     return new LightReferenceParameterList(myManager, elements);
  75   }
  76
  77   @NotNull
  78   public PsiTypeElement[] getTypeParameterElements() {
  79     return myTypeElements;
  80   }
  81
  82   @NotNull
  83   public PsiType[] getTypeArguments() {
  84     return PsiImplUtil.typesByTypeElements(myTypeElements);
  85   }
  86 }