java/java-impl/src/com/intellij/psi/impl/source/tree/java/PsiClassObjectAccessExpressionImpl.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.tree.java;
  17
  18 import com.intellij.lang.ASTNode;
  19 import com.intellij.openapi.diagnostic.Logger;
  20 import com.intellij.psi.*;
  21 import com.intellij.psi.impl.PsiImplUtil;
  22 import com.intellij.psi.impl.source.Constants;
  23 import com.intellij.psi.impl.source.tree.ChildRole;
  24 import com.intellij.psi.tree.IElementType;
  25 import com.intellij.psi.tree.ChildRoleBase;
  26 import com.intellij.ui.RowIcon;
  27 import com.intellij.util.Icons;
  28 import org.jetbrains.annotations.NotNull;
  29
  30 import javax.swing.*;
  31
  32 public class PsiClassObjectAccessExpressionImpl extends ExpressionPsiElement implements PsiClassObjectAccessExpression, Constants {
  33   private static final Logger LOG = Logger.getInstance("#com.intellij.psi.impl.source.tree.java.PsiClassObjectAccessExpressionImpl");
  34
  35   public PsiClassObjectAccessExpressionImpl() {
  36     super(CLASS_OBJECT_ACCESS_EXPRESSION);
  37   }
  38
  39   public PsiType getType() {
  40     return PsiImplUtil.getType(this);
  41   }
  42
  43   @NotNull
  44   public PsiTypeElement getOperand() {
  45     return (PsiTypeElement)findChildByRoleAsPsiElement(ChildRole.TYPE);
  46   }
  47
  48   public ASTNode findChildByRole(int role) {
  49     LOG.assertTrue(ChildRole.isUnique(role));
  50     switch(role){
  51       default:
  52         return null;
  53
  54       case ChildRole.TYPE:
  55         return findChildByType(TYPE);
  56
  57       case ChildRole.DOT:
  58         return findChildByType(DOT);
  59
  60       case ChildRole.CLASS_KEYWORD:
  61         return findChildByType(CLASS_KEYWORD);
  62     }
  63   }
  64
  65   public int getChildRole(ASTNode child) {
  66     LOG.assertTrue(child.getTreeParent() == this);
  67     IElementType i = child.getElementType();
  68     if (i == TYPE) {
  69       return ChildRole.TYPE;
  70     }
  71     else if (i == DOT) {
  72       return ChildRole.DOT;
  73     }
  74     else if (i == CLASS_KEYWORD) {
  75       return ChildRole.CLASS_KEYWORD;
  76     }
  77     else {
  78       return ChildRoleBase.NONE;
  79     }
  80   }
  81
  82   public void accept(@NotNull PsiElementVisitor visitor) {
  83     if (visitor instanceof JavaElementVisitor) {
  84       ((JavaElementVisitor)visitor).visitClassObjectAccessExpression(this);
  85     }
  86     else {
  87       visitor.visitElement(this);
  88     }
  89   }
  90
  91   public String toString() {
  92     return "PsiClassObjectAccessExpression:" + getText();
  93   }
  94
  95   public Icon getElementIcon(final int flags) {
  96     final RowIcon rowIcon = createLayeredIcon(Icons.FIELD_ICON, 0);
  97     rowIcon.setIcon(Icons.PUBLIC_ICON, 1);
  98     return rowIcon;
  99   }
 100 }
 101