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Java > Open Source Codes > com > google > gwt > dev > jjs > ast > js > JsonArray


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.jjs.ast.js;
17
18 import com.google.gwt.dev.jjs.ast.Context;
19 import com.google.gwt.dev.jjs.ast.JClassType;
20 import com.google.gwt.dev.jjs.ast.JExpression;
21 import com.google.gwt.dev.jjs.ast.JProgram;
22 import com.google.gwt.dev.jjs.ast.JType;
23 import com.google.gwt.dev.jjs.ast.JVisitor;
24
25 import java.util.ArrayList JavaDoc;
26
27 /**
28  * A JSON-style list of JS expressions.
29  */
30 public class JsonArray extends JExpression {
31
32   public ArrayList JavaDoc exprs = new ArrayList JavaDoc();
33
34   public JsonArray(JProgram program) {
35     super(program, null);
36   }
37
38   public JType getType() {
39     // If JavaScriptObject type is not available, just return the Object type
40 JClassType jsoType = program.getSpecialJavaScriptObject();
41     return (jsoType != null) ? jsoType : program.getTypeJavaLangObject();
42   }
43
44   public boolean hasSideEffects() {
45     for (int i = 0, c = exprs.size(); i < c; ++i) {
46       if (((JExpression) exprs.get(i)).hasSideEffects()) {
47         return true;
48       }
49     }
50     return false;
51   }
52
53   public void traverse(JVisitor visitor, Context ctx) {
54     if (visitor.visit(this, ctx)) {
55       visitor.accept(exprs);
56     }
57     visitor.endVisit(this, ctx);
58   }
59
60 }
61
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