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Java > Open Source Codes > com > google > gwt > dev > js > ast > JsNameRef


1 /*
2  * Copyright 2007 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5  * use this file except in compliance with the License. You may obtain a copy of
6  * 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, WITHOUT
12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13  * License for the specific language governing permissions and limitations under
14  * the License.
15  */

16 package com.google.gwt.dev.js.ast;
17
18 /**
19  * Represents a JavaScript expression that references a name.
20  */

21 public final class JsNameRef extends JsExpression /*implements HasName*/ {
22
23   private String JavaDoc ident;
24   private JsName name;
25   private JsExpression qualifier;
26
27   public JsNameRef(JsName name) {
28     this.name = name;
29   }
30
31   public JsNameRef(String JavaDoc ident) {
32     this.ident = ident;
33   }
34
35   public String JavaDoc getIdent() {
36     return (name == null) ? ident : name.getIdent();
37   }
38
39   public JsExpression getQualifier() {
40     return qualifier;
41   }
42
43   public String JavaDoc getShortIdent() {
44     return (name == null) ? ident : name.getShortIdent();
45   }
46
47   public boolean isLeaf() {
48     if (qualifier == null) {
49       return true;
50     } else {
51       return false;
52     }
53   }
54
55   public boolean isResolved() {
56     return name != null;
57   }
58
59   public void resolve(JsName name) {
60     this.name = name;
61     this.ident = null;
62   }
63
64   public void setQualifier(JsExpression qualifier) {
65     this.qualifier = qualifier;
66   }
67
68   public void traverse(JsVisitor v, JsContext ctx) {
69     if (v.visit(this, ctx)) {
70       if (qualifier != null) {
71         qualifier = v.accept(qualifier);
72       }
73     }
74     v.endVisit(this, ctx);
75   }
76 }
77
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