1    /* 
2     * Copyright 2000-2005 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.lang.javascript.psi.impl; 
17    
18   import com.intellij.lang.ASTNode; 
19   import com.intellij.lang.javascript.JSTokenTypes; 
20   import com.intellij.lang.javascript.psi.*; 
21   import com.intellij.psi.PsiElement; 
22   import com.intellij.psi.PsiElementVisitor; 
23   import com.intellij.psi.util.PsiTreeUtil; 
24    
25   /** 
26    * Created by IntelliJ IDEA. 
27    * User: max 
28    * Date: Jan 30, 2005 
29    * Time: 9:52:04 PM 
30    * To change this template use File | Settings | File Templates. 
31    */ 
32   public class JSBreakStatementImpl extends JSElementImpl implements JSBreakStatement { 
33     public JSBreakStatementImpl(final ASTNode node) { 
34       super(node); 
35     } 
36    
37     public String getLabel() { 
38       final ASTNode label = getNode().findChildByType(JSTokenTypes.IDENTIFIER); 
39       return label != null ? label.getText() : null; 
40     } 
41    
42     public JSStatement getStatementToBreak() { 
43       String label = getLabel(); 
44       if (label == null) { 
45         return PsiTreeUtil.getParentOfType(this, JSLoopStatement.class, JSSwitchStatement.class); 
46       } 
47       else { 
48         PsiElement run = getParent(); 
49         while (run != null) { 
50           if (run instanceof JSLabeledStatement && label.equals(((JSLabeledStatement)run).getLabel())) { 
51             return (JSStatement)run; 
52           } 
53    
54           if (run instanceof JSFunction) return null; 
55           run = run.getParent(); 
56         } 
57    
58         return null; 
59       } 
60     } 
61    
62     public void accept(PsiElementVisitor visitor) { 
63       if (visitor instanceof JSElementVisitor) { 
64         ((JSElementVisitor)visitor).visitJSBreakStatement(this); 
65       } 
66       else { 
67         visitor.visitElement(this); 
68       } 
69     } 
70    
71     public String toString() { 
72       return "JSBreakStatement"; 
73     } 
74   } 
75