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/*
 * Original Guava code is copyright (C) 2015 The Guava Authors.
 * Modifications from Guava are copyright (C) 2016 DiffPlug.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.diffplug.common.hash;

import java.nio.charset.Charset;

/**
 * An abstract hasher, implementing {@link #putBoolean(boolean)}, {@link #putDouble(double)},
 * {@link #putFloat(float)}, {@link #putUnencodedChars(CharSequence)}, and
 * {@link #putString(CharSequence, Charset)} as prescribed by {@link Hasher}.
 *
 * @author Dimitris Andreou
 */
abstract class AbstractHasher implements Hasher {
	@Override
	public final Hasher putBoolean(boolean b) {
		return putByte(b ? (byte) 1 : (byte) 0);
	}

	@Override
	public final Hasher putDouble(double d) {
		return putLong(Double.doubleToRawLongBits(d));
	}

	@Override
	public final Hasher putFloat(float f) {
		return putInt(Float.floatToRawIntBits(f));
	}

	@Override
	public Hasher putUnencodedChars(CharSequence charSequence) {
		for (int i = 0, len = charSequence.length(); i < len; i++) {
			putChar(charSequence.charAt(i));
		}
		return this;
	}

	@Override
	public Hasher putString(CharSequence charSequence, Charset charset) {
		return putBytes(charSequence.toString().getBytes(charset));
	}
}