1 /* 2 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 package org.graalvm.compiler.core.common.util; 26 27 /** 28 * Provides low-level sequential write access for signed and unsigned values of size 1, 2, 4, and 8 29 * bytes. 30 */ 31 public interface TypeWriter { 32 /** 33 * Returns the number of bytes that have been written, i.e., the byte index of the next byte to 34 * be written. 35 */ getBytesWritten()36 long getBytesWritten(); 37 38 /** Writes a signed 1 byte value. */ putS1(long value)39 void putS1(long value); 40 41 /** Writes an unsigned 1 byte value. */ putU1(long value)42 void putU1(long value); 43 44 /** Writes a signed 2 byte value. */ putS2(long value)45 void putS2(long value); 46 47 /** Writes an unsigned 2 byte value. */ putU2(long value)48 void putU2(long value); 49 50 /** Writes a signed 4 byte value. */ putS4(long value)51 void putS4(long value); 52 53 /** Patches a previously written signed 4 byte value at a given offset. */ patchS4(long value, long offset)54 void patchS4(long value, long offset); 55 56 /** Writes an unsigned 4 byte value. */ putU4(long value)57 void putU4(long value); 58 59 /** Writes a signed 8 byte value. */ putS8(long value)60 void putS8(long value); 61 62 /** Writes a signed value in a variable byte size encoding. */ putSV(long value)63 void putSV(long value); 64 65 /** Writes an unsigned value in a variable byte size encoding. */ putUV(long value)66 void putUV(long value); 67 } 68