Coverage Summary for Class: ParseRequest (com.google.common.primitives)

1 /*
2  * Copyright (C) 2011 The Guava Authors
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5  * in compliance with the License. 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 distributed under the License
10  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11  * or implied. See the License for the specific language governing permissions and limitations under
12  * the License.
13  */
14 
15 package com.google.common.primitives;
16 
17 import com.google.common.annotations.GwtCompatible;
18 
19 /** A string to be parsed as a number and the radix to interpret it in. */
20 @GwtCompatible
21 @ElementTypesAreNonnullByDefault
22 final class ParseRequest {
23   final String rawValue;
24   final int radix;
25 
26   private ParseRequest(String rawValue, int radix) {
27     this.rawValue = rawValue;
28     this.radix = radix;
29   }
30 
31   static ParseRequest fromString(String stringValue) {
32     if (stringValue.length() == 0) {
33       throw new NumberFormatException("empty string");
34     }
35 
36     // Handle radix specifier if present
37     String rawValue;
38     int radix;
39     char firstChar = stringValue.charAt(0);
40     if (stringValue.startsWith("0x") || stringValue.startsWith("0X")) {
41       rawValue = stringValue.substring(2);
42       radix = 16;
43     } else if (firstChar == '#') {
44       rawValue = stringValue.substring(1);
45       radix = 16;
46     } else if (firstChar == '0' && stringValue.length() > 1) {
47       rawValue = stringValue.substring(1);
48       radix = 8;
49     } else {
50       rawValue = stringValue;
51       radix = 10;
52     }
53 
54     return new ParseRequest(rawValue, radix);
55   }
56 }