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 { putBoolean(boolean b)27 @Override public final Hasher putBoolean(boolean b) { 28 return putByte(b ? (byte) 1 : (byte) 0); 29 } 30 putDouble(double d)31 @Override public final Hasher putDouble(double d) { 32 return putLong(Double.doubleToRawLongBits(d)); 33 } 34 putFloat(float f)35 @Override public final Hasher putFloat(float f) { 36 return putInt(Float.floatToRawIntBits(f)); 37 } 38 putUnencodedChars(CharSequence charSequence)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 putString(CharSequence charSequence, Charset charset)46 @Override public Hasher putString(CharSequence charSequence, Charset charset) { 47 return putBytes(charSequence.toString().getBytes(charset)); 48 } 49 } 50