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comparison src/share/vm/classfile/defaultMethods.hpp @ 6934:4735d2c84362

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7200776: Implement default methods in interfaces Summary: Add generic type analysis and default method selection algorithms Reviewed-by: coleenp, acorn
author kamg
date Thu, 11 Oct 2012 12:25:42 -0400
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children 36b97be47bde
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6921:a1b8cf9cf970 6934:4735d2c84362
1 /*
2 * Copyright (c) 2012, 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 #ifndef SHARE_VM_CLASSFILE_DEFAULTMETHODS_HPP
26 #define SHARE_VM_CLASSFILE_DEFAULTMETHODS_HPP
27
28 #include "runtime/handles.hpp"
29 #include "utilities/growableArray.hpp"
30 #include "utilities/exceptions.hpp"
31
32 class InstanceKlass;
33 class Symbol;
34 class Method;
35
36 class DefaultMethods : AllStatic {
37 public:
38
39 // Analyzes class and determines which default methods are inherited
40 // from interfaces (and has no other implementation). For each method
41 // (and each different signature the method could have), create an
42 // "overpass" method that is an instance method that redirects to the
43 // default method. Overpass methods are added to the methods lists for
44 // the class.
45 static void generate_default_methods(
46 InstanceKlass* klass, GrowableArray<Method*>* mirandas, TRAPS);
47
48
49 // Called during linking when an invokespecial to an direct interface
50 // method is found. Selects and returns a method if there is a unique
51 // default method in the 'super_iface' part of the hierarchy which is
52 // also a candidate default for 'this_klass'. Otherwise throws an AME.
53 static Method* find_super_default(
54 Klass* this_klass, Klass* super_iface,
55 Symbol* method_name, Symbol* method_sig, TRAPS);
56 };
57
58 #endif // SHARE_VM_CLASSFILE_DEFAULTMETHODS_HPP