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/*
* Copyright (C) 2011 The Guava Authors
*
* 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.google.common.hash;
import com.google.common.annotations.Beta;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
/**
* An object which can receive a stream of primitive values.
*
* @author Kevin Bourrillion
* @since 12.0 (in 11.0 as {@code Sink})
*/
@Beta
@CanIgnoreReturnValue
public interface PrimitiveSink {
/**
* Puts a byte into this sink.
*
* @param b a byte
* @return this instance
*/
PrimitiveSink putByte(byte b);
/**
* Puts an array of bytes into this sink.
*
* @param bytes a byte array
* @return this instance
*/
PrimitiveSink putBytes(byte[] bytes);
/**
* Puts a chunk of an array of bytes into this sink. {@code bytes[off]} is the first byte written,
* {@code bytes[off + len - 1]} is the last.
*
* @param bytes a byte array
* @param off the start offset in the array
* @param len the number of bytes to write
* @return this instance
* @throws IndexOutOfBoundsException if {@code off < 0} or {@code off + len > bytes.length} or
* {@code len < 0}
*/
PrimitiveSink putBytes(byte[] bytes, int off, int len);
/**
* Puts the remaining bytes of a byte buffer into this sink. {@code bytes.position()} is the first
* byte written, {@code bytes.limit() - 1} is the last. The position of the buffer will be equal
* to the limit when this method returns.
*
* @param bytes a byte buffer
* @return this instance
* @since 23.0
*/
PrimitiveSink putBytes(ByteBuffer bytes);
/** Puts a short into this sink. */
PrimitiveSink putShort(short s);
/** Puts an int into this sink. */
PrimitiveSink putInt(int i);
/** Puts a long into this sink. */
PrimitiveSink putLong(long l);
/** Puts a float into this sink. */
PrimitiveSink putFloat(float f);
/** Puts a double into this sink. */
PrimitiveSink putDouble(double d);
/** Puts a boolean into this sink. */
PrimitiveSink putBoolean(boolean b);
/** Puts a character into this sink. */
PrimitiveSink putChar(char c);
/**
* Puts each 16-bit code unit from the {@link CharSequence} into this sink.
*
* <p><b>Warning:</b> This method will produce different output than most other languages do when
* running on the equivalent input. For cross-language compatibility, use {@link #putString},
* usually with a charset of UTF-8. For other use cases, use {@code putUnencodedChars}.
*
* @since 15.0 (since 11.0 as putString(CharSequence))
*/
PrimitiveSink putUnencodedChars(CharSequence charSequence);
/**
* Puts a string into this sink using the given charset.
*
* <p><b>Warning:</b> This method, which reencodes the input before processing it, is useful only
* for cross-language compatibility. For other use cases, prefer {@link #putUnencodedChars}, which
* is faster, produces the same output across Java releases, and processes every {@code char} in
* the input, even if some are invalid.
*/
PrimitiveSink putString(CharSequence charSequence, Charset charset);
}
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