1 /*
   2  * Copyright (c) 2011, 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.*;
  26 import java.util.*;
  27 
  28 import jdk.vm.ci.meta.*;
  29 
  30 public abstract class HotSpotMethod implements JavaMethod, Formattable /* , JavaMethodContex */{
  31 
  32     public static String applyFormattingFlagsAndWidth(String s, int flags, int width) {
  33         if (flags == 0 && width < 0) {
  34             return s;
  35         }
  36         StringBuilder sb = new StringBuilder(s);
  37 
  38         // apply width and justification
  39         int len = sb.length();
  40         if (len < width) {
  41             for (int i = 0; i < width - len; i++) {
  42                 if ((flags & LEFT_JUSTIFY) == LEFT_JUSTIFY) {
  43                     sb.append(' ');
  44                 } else {
  45                     sb.insert(0, ' ');
  46                 }
  47             }
  48         }
  49 
  50         String res = sb.toString();
  51         if ((flags & UPPERCASE) == UPPERCASE) {
  52             res = res.toUpperCase();
  53         }
  54         return res;
  55     }
  56 
  57     protected String name;
  58 
  59     /**
  60      * Controls whether {@link #toString()} includes the qualified or simple name of the class in
  61      * which the method is declared.
  62      */
  63     public static final boolean FULLY_QUALIFIED_METHOD_NAME = false;
  64 
  65     protected HotSpotMethod(String name) {
  66         this.name = name;
  67     }
  68 
  69     @Override
  70     public final String getName() {
  71         return name;
  72     }
  73 
  74     @Override
  75     public final String toString() {
  76         char h = FULLY_QUALIFIED_METHOD_NAME ? 'H' : 'h';
  77         String suffix = this instanceof ResolvedJavaMethod ? "" : ", unresolved";
  78         String fmt = String.format("HotSpotMethod<%%%c.%%n(%%p)%s>", h, suffix);
  79         return format(fmt);
  80     }
  81 
  82     public void formatTo(Formatter formatter, int flags, int width, int precision) {
  83         String base = (flags & ALTERNATE) == ALTERNATE ? getName() : toString();
  84         formatter.format(applyFormattingFlagsAndWidth(base, flags & ~ALTERNATE, width));
  85     }
  86 
  87     public JavaMethod asJavaMethod() {
  88         return this;
  89     }
  90 }