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.hash;
16
17 import java.nio.charset.Charset;
18
19 /**
20 * An abstract hasher, implementing {@link #putBoolean(boolean)}, {@link #putDouble(double)},
21 * {@link #putFloat(float)}, {@link #putUnencodedChars(CharSequence)}, and
22 * {@link #putString(CharSequence, Charset)} as prescribed by {@link Hasher}.
23 *
24 * @author Dimitris Andreou
25 */
26 abstract class AbstractHasher implements Hasher {
27 @Override public final Hasher putBoolean(boolean b) {
28 return putByte(b ? (byte) 1 : (byte) 0);
29 }
30
31 @Override public final Hasher putDouble(double d) {
32 return putLong(Double.doubleToRawLongBits(d));
33 }
34
35 @Override public final Hasher putFloat(float f) {
36 return putInt(Float.floatToRawIntBits(f));
37 }
38
39 @Override public Hasher putUnencodedChars(CharSequence charSequence) {
40 for (int i = 0, len = charSequence.length(); i < len; i++) {
41 putChar(charSequence.charAt(i));
42 }
43 return this;
44 }
45
46 @Override public Hasher putString(CharSequence charSequence, Charset charset) {
47 return putBytes(charSequence.toString().getBytes(charset));
48 }
49 }