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  */
24 
25 /*
26  * @test
27  * @run testng TestTypeAccess
28  */
29 
30 import jdk.incubator.foreign.MemoryHandles;
31 import jdk.incubator.foreign.MemorySegment;
32 import jdk.incubator.foreign.MemoryLayouts;
33 import jdk.incubator.foreign.ResourceScope;
34 import org.testng.annotations.*;
35 
36 import java.lang.invoke.VarHandle;
37 import java.lang.invoke.WrongMethodTypeException;
38 
39 public class TestTypeAccess {
40 
41     static final VarHandle INT_HANDLE = MemoryLayouts.JAVA_INT.varHandle(int.class);
42 
43     static final VarHandle ADDR_HANDLE = MemoryHandles.asAddressVarHandle(INT_HANDLE);
44 
45     @Test(expectedExceptions=ClassCastException.class)
46     public void testMemoryAddressCoordinateAsString() {
47         try (ResourceScope scope = ResourceScope.newConfinedScope()) {
48             MemorySegment s = MemorySegment.allocateNative(8, 8, scope);
49             int v = (int)INT_HANDLE.get("string");
50         }
51     }
52 
53     @Test(expectedExceptions=WrongMethodTypeException.class)
54     public void testMemoryCoordinatePrimitive() {
55         try (ResourceScope scope = ResourceScope.newConfinedScope()) {
56             MemorySegment s = MemorySegment.allocateNative(8, 8, scope);
57             int v = (int)INT_HANDLE.get(1);
58         }
59     }
60 
61     @Test(expectedExceptions=ClassCastException.class)
62     public void testMemoryAddressValueGetAsString() {
63         try (ResourceScope scope = ResourceScope.newConfinedScope()) {
64             MemorySegment s = MemorySegment.allocateNative(8, 8, scope);
65             String address = (String)ADDR_HANDLE.get(s.address());
66         }
67     }
68 
69     @Test(expectedExceptions=ClassCastException.class)
70     public void testMemoryAddressValueSetAsString() {
71         try (ResourceScope scope = ResourceScope.newConfinedScope()) {
72             MemorySegment s = MemorySegment.allocateNative(8, 8, scope);
73             ADDR_HANDLE.set(s.address(), "string");
74         }
75     }
76 
77     @Test(expectedExceptions=WrongMethodTypeException.class)
78     public void testMemoryAddressValueGetAsPrimitive() {
79         try (ResourceScope scope = ResourceScope.newConfinedScope()) {
80             MemorySegment s = MemorySegment.allocateNative(8, 8, scope);
81             int address = (int)ADDR_HANDLE.get(s.address());
82         }
83     }
84 
85     @Test(expectedExceptions=WrongMethodTypeException.class)
86     public void testMemoryAddressValueSetAsPrimitive() {
87         try (ResourceScope scope = ResourceScope.newConfinedScope()) {
88             MemorySegment s = MemorySegment.allocateNative(8, 8, scope);
89             ADDR_HANDLE.set(s.address(), 1);
90         }
91     }
92 
93 }