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6934
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1 /*
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_CLASSFILE_DEFAULTMETHODS_HPP
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26 #define SHARE_VM_CLASSFILE_DEFAULTMETHODS_HPP
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27
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28 #include "runtime/handles.hpp"
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29 #include "utilities/growableArray.hpp"
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30 #include "utilities/exceptions.hpp"
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31
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32 class InstanceKlass;
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33 class Symbol;
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34 class Method;
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35
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36 class DefaultMethods : AllStatic {
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37 public:
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38
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39 // Analyzes class and determines which default methods are inherited
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40 // from interfaces (and has no other implementation). For each method
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41 // (and each different signature the method could have), create an
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42 // "overpass" method that is an instance method that redirects to the
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43 // default method. Overpass methods are added to the methods lists for
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44 // the class.
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45 static void generate_default_methods(
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46 InstanceKlass* klass, GrowableArray<Method*>* mirandas, TRAPS);
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47
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48
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49 // Called during linking when an invokespecial to an direct interface
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50 // method is found. Selects and returns a method if there is a unique
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51 // default method in the 'super_iface' part of the hierarchy which is
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52 // also a candidate default for 'this_klass'. Otherwise throws an AME.
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53 static Method* find_super_default(
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54 Klass* this_klass, Klass* super_iface,
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55 Symbol* method_name, Symbol* method_sig, TRAPS);
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56 };
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57
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58 #endif // SHARE_VM_CLASSFILE_DEFAULTMETHODS_HPP
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