1 /*
 2  *  Copyright (c) 2019, 2020, 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.internal.foreign.abi;
24 
25 import jdk.incubator.foreign.NativeScope;
26 
27 import java.util.ArrayDeque;
28 import java.util.Deque;
29 import java.util.List;
30 
31 public class BindingInterpreter {
32 
33     static void unbox(Object arg, List<Binding> bindings, StoreFunc storeFunc, NativeScope scope) {
34         Deque<Object> stack = new ArrayDeque<>();
35         stack.push(arg);
36         for (Binding b : bindings) {
37             b.unbox(stack, storeFunc, scope);
38         }
39     }
40 
41     static Object box(List<Binding> bindings, LoadFunc loadFunc) {
42         Deque<Object> stack = new ArrayDeque<>();
43         for (Binding b : bindings) {
44             b.box(stack, loadFunc);
45         }
46        return stack.pop();
47     }
48 
49     interface StoreFunc {
50         void store(VMStorage storage, Class<?> type, Object o);
51     }
52 
53     interface LoadFunc {
54         Object load(VMStorage storage, Class<?> type);
55     }
56 }