1/*
2 * Copyright (C) 2009 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32
33#include "platform/CrossThreadCopier.h"
34
35#include "platform/network/ResourceError.h"
36#include "platform/network/ResourceRequest.h"
37#include "platform/network/ResourceResponse.h"
38#include "platform/weborigin/KURL.h"
39#include "wtf/text/WTFString.h"
40
41namespace blink {
42
43CrossThreadCopierBase<false, false, false, KURL>::Type CrossThreadCopierBase<false, false, false, KURL>::copy(const KURL& url)
44{
45    return url.copy();
46}
47
48CrossThreadCopierBase<false, false, false, String>::Type CrossThreadCopierBase<false, false, false, String>::copy(const String& str)
49{
50    return str.isolatedCopy();
51}
52
53CrossThreadCopierBase<false, false, false, ResourceError>::Type CrossThreadCopierBase<false, false, false, ResourceError>::copy(const ResourceError& error)
54{
55    return error.copy();
56}
57
58CrossThreadCopierBase<false, false, false, ResourceRequest>::Type CrossThreadCopierBase<false, false, false, ResourceRequest>::copy(const ResourceRequest& request)
59{
60    return request.copyData();
61}
62
63CrossThreadCopierBase<false, false, false, ResourceResponse>::Type CrossThreadCopierBase<false, false, false, ResourceResponse>::copy(const ResourceResponse& response)
64{
65    return response.copyData();
66}
67
68// Test CrossThreadCopier using COMPILE_ASSERT.
69
70// Verify that ThreadSafeRefCounted objects get handled correctly.
71class CopierThreadSafeRefCountedTest : public ThreadSafeRefCounted<CopierThreadSafeRefCountedTest> {
72};
73
74COMPILE_ASSERT((WTF::IsSameType<
75                  PassRefPtr<CopierThreadSafeRefCountedTest>,
76                  CrossThreadCopier<PassRefPtr<CopierThreadSafeRefCountedTest> >::Type
77                  >::value),
78               PassRefPtrTest);
79COMPILE_ASSERT((WTF::IsSameType<
80                  PassRefPtr<CopierThreadSafeRefCountedTest>,
81                  CrossThreadCopier<RefPtr<CopierThreadSafeRefCountedTest> >::Type
82                  >::value),
83               RefPtrTest);
84COMPILE_ASSERT((WTF::IsSameType<
85                  PassRefPtr<CopierThreadSafeRefCountedTest>,
86                  CrossThreadCopier<CopierThreadSafeRefCountedTest*>::Type
87                  >::value),
88               RawPointerTest);
89
90
91// Add a generic specialization which will let's us verify that no other template matches.
92template<typename T> struct CrossThreadCopierBase<false, false, false, T> {
93    typedef int Type;
94};
95
96// Verify that RefCounted objects only match our generic template which exposes Type as int.
97class CopierRefCountedTest : public RefCounted<CopierRefCountedTest> {
98};
99
100COMPILE_ASSERT((WTF::IsSameType<
101                  int,
102                  CrossThreadCopier<PassRefPtr<CopierRefCountedTest> >::Type
103                  >::value),
104               PassRefPtrRefCountedTest);
105
106COMPILE_ASSERT((WTF::IsSameType<
107                  int,
108                  CrossThreadCopier<RefPtr<CopierRefCountedTest> >::Type
109                  >::value),
110               RefPtrRefCountedTest);
111
112COMPILE_ASSERT((WTF::IsSameType<
113                  int,
114                  CrossThreadCopier<CopierRefCountedTest*>::Type
115                  >::value),
116               RawPointerRefCountedTest);
117
118// Verify that PassOwnPtr gets passed through.
119COMPILE_ASSERT((WTF::IsSameType<
120                  PassOwnPtr<float>,
121                  CrossThreadCopier<PassOwnPtr<float> >::Type
122                  >::value),
123               PassOwnPtrTest);
124
125// Verify that PassOwnPtr does not get passed through.
126COMPILE_ASSERT((WTF::IsSameType<
127                  int,
128                  CrossThreadCopier<OwnPtr<float> >::Type
129                  >::value),
130               OwnPtrTest);
131
132} // namespace blink
133