1 /* 2 * Copyright (c) 1999, 2020, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.tools.javac.util; 27 28 /** An interface containing layout character constants used in Java 29 * programs. 30 * 31 * <p><b>This is NOT part of any supported API. 32 * If you write code that depends on this, you do so at your own risk. 33 * This code and its internal interfaces are subject to change or 34 * deletion without notice.</b> 35 */ 36 public interface LayoutCharacters { 37 38 /** Tabulator column increment. 39 */ 40 final static int TabInc = 8; 41 42 /** Standard indentation for subdiagnostics 43 */ 44 final static int DiagInc = 4; 45 46 /** Standard indentation for additional diagnostic lines 47 */ 48 final static int DetailsInc = 2; 49 50 /** Tabulator character. 51 */ 52 final static byte TAB = 0x9; 53 54 /** Line feed character. 55 */ 56 final static byte LF = 0xA; 57 58 /** Form feed character. 59 */ 60 final static byte FF = 0xC; 61 62 /** Carriage return character. 63 */ 64 final static byte CR = 0xD; 65 66 /** End of input character. Used as a sentinel to denote the 67 * character one beyond the last defined character in a 68 * source file. 69 */ 70 final static byte EOI = 0x1A; 71 72 /** Bump column to the next tab. 73 */ 74 static int tabulate(int column) { 75 return (column / TabInc * TabInc) + TabInc; 76 } 77 }