1 | // Copyright (C) 2009 Google Inc. |
2 | // |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
4 | // you may not use this file except in compliance with the License. |
5 | // You may obtain a copy of the License at |
6 | // |
7 | // http://www.apache.org/licenses/LICENSE-2.0 |
8 | // |
9 | // Unless required by applicable law or agreed to in writing, software |
10 | // distributed under the License is distributed on an "AS IS" BASIS, |
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | // See the License for the specific language governing permissions and |
13 | // limitations under the License. |
14 | |
15 | package com.google.caja.ancillary.opt; |
16 | |
17 | /** Encapsulates information about the use of a name, as in a reference. */ |
18 | final class Use { |
19 | final ScopeInfo definingScope; |
20 | final String origName; |
21 | |
22 | Use(ScopeInfo definingScope, String origName) { |
23 | this.definingScope = definingScope; |
24 | this.origName = origName; |
25 | } |
26 | |
27 | @Override |
28 | public boolean equals(Object o) { |
29 | if (!(o instanceof Use)) { return false; } |
30 | Use that = (Use) o; |
31 | return definingScope == that.definingScope |
32 | && origName.equals(that.origName); |
33 | } |
34 | |
35 | @Override |
36 | public int hashCode() { |
37 | return System.identityHashCode(definingScope) + 31 * origName.hashCode(); |
38 | } |
39 | } |