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1 | /* | |
2 | * Copyright (C) 2011 Google Inc. | |
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.google.gson.internal; | |
17 | ||
18 | import java.io.ObjectStreamException; | |
19 | import java.math.BigDecimal; | |
20 | ||
21 | /** | |
22 | * This class holds a number value that is lazily converted to a specific number type | |
23 | * | |
24 | * @author Inderjeet Singh | |
25 | */ | |
26 | public final class LazilyParsedNumber extends Number { | |
27 | private final String value; | |
28 | ||
29 | public LazilyParsedNumber(String value) { | |
30 | this.value = value; | |
31 | } | |
32 | ||
33 | @Override | |
34 | public int intValue() { | |
35 | try { | |
36 | return Integer.parseInt(value); | |
37 | } catch (NumberFormatException e) { | |
38 | try { | |
39 | return (int) Long.parseLong(value); | |
40 | } catch (NumberFormatException nfe) { | |
41 | return new BigDecimal(value).intValue(); | |
42 | } | |
43 | } | |
44 | } | |
45 | ||
46 | @Override | |
47 | public long longValue() { | |
48 | try { | |
49 | return Long.parseLong(value); | |
50 | } catch (NumberFormatException e) { | |
51 | return new BigDecimal(value).longValue(); | |
52 | } | |
53 | } | |
54 | ||
55 | @Override | |
56 | public float floatValue() { | |
57 | return Float.parseFloat(value); | |
58 | } | |
59 | ||
60 | @Override | |
61 | public double doubleValue() { | |
62 | return Double.parseDouble(value); | |
63 | } | |
64 | ||
65 | @Override | |
66 | public String toString() { | |
67 | return value; | |
68 | } | |
69 | ||
70 | /** | |
71 | * If somebody is unlucky enough to have to serialize one of these, serialize | |
72 | * it as a BigDecimal so that they won't need Gson on the other side to | |
73 | * deserialize it. | |
74 | */ | |
75 | private Object writeReplace() throws ObjectStreamException { | |
76 | return new BigDecimal(value); | |
77 | } | |
78 | } |