1 /* 2 * Copyright (c) 2011, 2015, 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 package jdk.vm.ci.hotspot; 24 25 import static java.util.FormattableFlags.ALTERNATE; 26 import static java.util.FormattableFlags.LEFT_JUSTIFY; 27 import static java.util.FormattableFlags.UPPERCASE; 28 29 import java.util.Formattable; 30 import java.util.Formatter; 31 32 import jdk.vm.ci.meta.JavaMethod; 33 import jdk.vm.ci.meta.ResolvedJavaMethod; 34 35 abstract class HotSpotMethod implements JavaMethod, Formattable { 36 37 public static String applyFormattingFlagsAndWidth(String s, int flags, int width) { 38 if (flags == 0 && width < 0) { 39 return s; 40 } 41 StringBuilder sb = new StringBuilder(s); 42 43 // apply width and justification 44 int len = sb.length(); 45 if (len < width) { 46 for (int i = 0; i < width - len; i++) { 47 if ((flags & LEFT_JUSTIFY) == LEFT_JUSTIFY) { 48 sb.append(' '); 49 } else { 50 sb.insert(0, ' '); 51 } 52 } 53 } 54 55 String res = sb.toString(); 56 if ((flags & UPPERCASE) == UPPERCASE) { 57 res = res.toUpperCase(); 58 } 59 return res; 60 } 61 62 /** 63 * Controls whether {@link #toString()} includes the qualified or simple name of the class in 64 * which the method is declared. 65 */ 66 public static final boolean FULLY_QUALIFIED_METHOD_NAME = false; 67 68 @Override 69 public final String toString() { 70 char h = FULLY_QUALIFIED_METHOD_NAME ? 'H' : 'h'; 71 String suffix = this instanceof ResolvedJavaMethod ? "" : ", unresolved"; 72 String fmt = String.format("HotSpotMethod<%%%c.%%n(%%p)%s>", h, suffix); 73 return format(fmt); 74 } 75 76 public void formatTo(Formatter formatter, int flags, int width, int precision) { 77 String base = (flags & ALTERNATE) == ALTERNATE ? getName() : toString(); 78 formatter.format(applyFormattingFlagsAndWidth(base, flags & ~ALTERNATE, width)); 79 } 80 81 public JavaMethod asJavaMethod() { 82 return this; 83 } 84 }