JavaValueV8.h revision 2bde8e466a4451c7319e3a072d118917957d6554 
1/*
2 * Copyright 2011, The Android Open Source Project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef JavaValueV8_h
27#define JavaValueV8_h
28
29#if ENABLE(JAVA_BRIDGE)
30
31#include "JavaType.h"
32
33#include <wtf/text/WTFString.h>
34
35namespace JSC {
36
37namespace Bindings {
38
39class JavaInstance;
40
41// A variant used to represent a Java value, almost identical to the JNI
42// jvalue type. It exists because the logic to convert between JavaScript
43// objects (as JavaNPObject or JSValue) and Java objects should not depend upon
44// JNI, to allow ports to provide a JavaInstance object etc which does not use
45// JNI. This means that the 'object' field of this variant uses JavaInstance,
46// not jobject.
47//
48// Note that this class is independent of the JavaScript engine, but is
49// currently used only with V8.
50// See https://bugs.webkit.org/show_bug.cgi?id=57023.
51struct JavaValue {
52    JavaValue() : m_type(JavaTypeInvalid) {}
53
54    JavaType m_type;
55    // We don't use a union because we want to be able to ref-count some of the
56    // values. This requires types with non-trivial constructors.
57    RefPtr<JavaInstance> m_objectValue;
58    bool m_booleanValue;
59    signed char m_byteValue;
60    unsigned short m_charValue;
61    short m_shortValue;
62    int m_intValue;
63    long long m_longValue;
64    float m_floatValue;
65    double m_doubleValue;
66    String m_stringValue;
67};
68
69} // namespace Bindings
70
71} // namespace JSC
72
73#endif // ENABLE(JAVA_BRIDGE)
74
75#endif // JavaValueV8_h
76