001/* 002 * Copyright (C) 2011 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 005 * in compliance with the License. You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software distributed under the License 010 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 011 * or implied. See the License for the specific language governing permissions and limitations under 012 * the License. 013 */ 014 015package com.google.common.hash; 016 017import com.google.common.annotations.Beta; 018import com.google.errorprone.annotations.CanIgnoreReturnValue; 019import java.nio.ByteBuffer; 020import java.nio.charset.Charset; 021 022/** 023 * An object which can receive a stream of primitive values. 024 * 025 * @author Kevin Bourrillion 026 * @since 12.0 (in 11.0 as {@code Sink}) 027 */ 028@Beta 029@CanIgnoreReturnValue 030public interface PrimitiveSink { 031 /** 032 * Puts a byte into this sink. 033 * 034 * @param b a byte 035 * @return this instance 036 */ 037 PrimitiveSink putByte(byte b); 038 039 /** 040 * Puts an array of bytes into this sink. 041 * 042 * @param bytes a byte array 043 * @return this instance 044 */ 045 PrimitiveSink putBytes(byte[] bytes); 046 047 /** 048 * Puts a chunk of an array of bytes into this sink. {@code bytes[off]} is the first byte written, 049 * {@code bytes[off + len - 1]} is the last. 050 * 051 * @param bytes a byte array 052 * @param off the start offset in the array 053 * @param len the number of bytes to write 054 * @return this instance 055 * @throws IndexOutOfBoundsException if {@code off < 0} or {@code off + len > bytes.length} or 056 * {@code len < 0} 057 */ 058 PrimitiveSink putBytes(byte[] bytes, int off, int len); 059 060 /** 061 * Puts the remaining bytes of a byte buffer into this sink. {@code bytes.position()} is the first 062 * byte written, {@code bytes.limit() - 1} is the last. The position of the buffer will be equal 063 * to the limit when this method returns. 064 * 065 * @param bytes a byte buffer 066 * @return this instance 067 * @since 23.0 068 */ 069 PrimitiveSink putBytes(ByteBuffer bytes); 070 071 /** Puts a short into this sink. */ 072 PrimitiveSink putShort(short s); 073 074 /** Puts an int into this sink. */ 075 PrimitiveSink putInt(int i); 076 077 /** Puts a long into this sink. */ 078 PrimitiveSink putLong(long l); 079 080 /** Puts a float into this sink. */ 081 PrimitiveSink putFloat(float f); 082 083 /** Puts a double into this sink. */ 084 PrimitiveSink putDouble(double d); 085 086 /** Puts a boolean into this sink. */ 087 PrimitiveSink putBoolean(boolean b); 088 089 /** Puts a character into this sink. */ 090 PrimitiveSink putChar(char c); 091 092 /** 093 * Puts each 16-bit code unit from the {@link CharSequence} into this sink. 094 * 095 * <p><b>Warning:</b> This method will produce different output than most other languages do when 096 * running on the equivalent input. For cross-language compatibility, use {@link #putString}, 097 * usually with a charset of UTF-8. For other use cases, use {@code putUnencodedChars}. 098 * 099 * @since 15.0 (since 11.0 as putString(CharSequence)) 100 */ 101 PrimitiveSink putUnencodedChars(CharSequence charSequence); 102 103 /** 104 * Puts a string into this sink using the given charset. 105 * 106 * <p><b>Warning:</b> This method, which reencodes the input before processing it, is useful only 107 * for cross-language compatibility. For other use cases, prefer {@link #putUnencodedChars}, which 108 * is faster, produces the same output across Java releases, and processes every {@code char} in 109 * the input, even if some are invalid. 110 */ 111 PrimitiveSink putString(CharSequence charSequence, Charset charset); 112}