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1   /*
2    * Copyright (c) 2002, 2013, 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  package com.sun.tools.javac.jvm;
26  
27  import com.sun.tools.javac.util.Context;
28  import com.sun.tools.javac.util.Options;
29  import java.util.EnumSet;
30  import java.util.Set;
31  
32  import static com.sun.tools.javac.main.Option.PROFILE;
33  
34  /** The target profile.
35   *
36   *  <p><b>This is NOT part of any supported API.
37   *  If you write code that depends on this, you do so at your own risk.
38   *  This code and its internal interfaces are subject to change or
39   *  deletion without notice.</b>
40   */
41  public enum Profile {
42      COMPACT1("compact1", 1, Target.JDK1_8),
43      COMPACT2("compact2", 2, Target.JDK1_8),
44      COMPACT3("compact3", 3, Target.JDK1_8),
45  
46      DEFAULT {
47          @Override
48          public boolean isValid(Target t) {
49              return true;
50          }
51      };
52  
53      private static final Context.Key<Profile> profileKey =
54          new Context.Key<Profile>();
55  
56      public static Profile instance(Context context) {
57          Profile instance = context.get(profileKey);
58          if (instance == null) {
59              Options options = Options.instance(context);
60              String profileString = options.get(PROFILE);
61              if (profileString != null) instance = lookup(profileString);
62              if (instance == null) instance = DEFAULT;
63              context.put(profileKey, instance);
64          }
65          return instance;
66      }
67  
68      public final String name;
69      public final int value;
70      final Set<Target> targets;
71  
72      Profile() {
73          name = null;
74          value = Integer.MAX_VALUE;
75          targets = null;
76      }
77  
78      Profile(String name, int value, Target t, Target... targets) {
79          this.name = name;
80          this.value = value;
81          this.targets = EnumSet.of(t, targets);
82      }
83  
84      public static Profile lookup(String name) {
85          // the set of values is small enough to do linear search
86          for (Profile p: values()) {
87              if (name.equals(p.name))
88                  return p;
89          }
90          return null;
91      }
92  
93      public static Profile lookup(int value) {
94          // the set of values is small enough to do linear search
95          for (Profile p: values()) {
96              if (value == p.value)
97                  return p;
98          }
99          return null;
100     }
101 
102     public boolean isValid(Target t) {
103         return targets.contains(t);
104     }
105 }