ConditionWhenTypeIs


1   /*
2    * Copyright 2006 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.cfg;
17  
18  import com.google.gwt.core.ext.GeneratorContext;
19  import com.google.gwt.core.ext.TreeLogger;
20  
21  /**
22   * A deferred binding condition to determine whether the type being rebound is
23   * exactly a particular type.
24   */
25  public class ConditionWhenTypeIs extends Condition {
26  
27    private final String   exactTypeName;
28  
29    public ConditionWhenTypeIs(String   exactTypeName) {
30      this.exactTypeName = exactTypeName;
31    }
32  
33    public String   toString() {
34      return "<when-type-is class='" + exactTypeName + "'/>";
35    }
36  
37    protected boolean doEval(TreeLogger logger, GeneratorContext context,
38        String   testType) {
39      return exactTypeName.equals(testType);
40    }
41  
42    protected String   getEvalAfterMessage(String   testType, boolean result) {
43      if (result) {
44        return "Yes, the requested type was an exact match";
45      } else {
46        return "Not an exact match";
47      }
48    }
49  
50    protected String   getEvalBeforeMessage(String   testType) {
51      return toString();
52    }
53  }
54

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