1/*
2 * Copyright (C) 2006 Apple Computer, 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
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 APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 APICast_h
27#define APICast_h
28
29#include "JSAPIValueWrapper.h"
30#include "JSGlobalObject.h"
31#include "JSValue.h"
32#include <wtf/UnusedParam.h>
33
34namespace JSC {
35    class ExecState;
36    class PropertyNameArray;
37    class JSGlobalData;
38    class JSObject;
39    class JSValue;
40}
41
42typedef const struct OpaqueJSContextGroup* JSContextGroupRef;
43typedef const struct OpaqueJSContext* JSContextRef;
44typedef struct OpaqueJSContext* JSGlobalContextRef;
45typedef struct OpaqueJSPropertyNameAccumulator* JSPropertyNameAccumulatorRef;
46typedef const struct OpaqueJSValue* JSValueRef;
47typedef struct OpaqueJSValue* JSObjectRef;
48
49/* Opaque typing convenience methods */
50
51inline JSC::ExecState* toJS(JSContextRef c)
52{
53    ASSERT(c);
54    return reinterpret_cast<JSC::ExecState*>(const_cast<OpaqueJSContext*>(c));
55}
56
57inline JSC::ExecState* toJS(JSGlobalContextRef c)
58{
59    ASSERT(c);
60    return reinterpret_cast<JSC::ExecState*>(c);
61}
62
63inline JSC::JSValue toJS(JSC::ExecState* exec, JSValueRef v)
64{
65    ASSERT_UNUSED(exec, exec);
66    ASSERT(v);
67#if USE(JSVALUE32_64)
68    JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v));
69    if (!jsCell)
70        return JSC::JSValue();
71    if (jsCell->isAPIValueWrapper())
72        return static_cast<JSC::JSAPIValueWrapper*>(jsCell)->value();
73    return jsCell;
74#else
75    return JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v)));
76#endif
77}
78
79inline JSC::JSValue toJSForGC(JSC::ExecState* exec, JSValueRef v)
80{
81    ASSERT_UNUSED(exec, exec);
82    ASSERT(v);
83#if USE(JSVALUE32_64)
84    JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v));
85    if (!jsCell)
86        return JSC::JSValue();
87    return jsCell;
88#else
89    return JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v)));
90#endif
91}
92
93inline JSC::JSObject* toJS(JSObjectRef o)
94{
95    return reinterpret_cast<JSC::JSObject*>(o);
96}
97
98inline JSC::PropertyNameArray* toJS(JSPropertyNameAccumulatorRef a)
99{
100    return reinterpret_cast<JSC::PropertyNameArray*>(a);
101}
102
103inline JSC::JSGlobalData* toJS(JSContextGroupRef g)
104{
105    return reinterpret_cast<JSC::JSGlobalData*>(const_cast<OpaqueJSContextGroup*>(g));
106}
107
108inline JSValueRef toRef(JSC::ExecState* exec, JSC::JSValue v)
109{
110#if USE(JSVALUE32_64)
111    if (!v)
112        return 0;
113    if (!v.isCell())
114        return reinterpret_cast<JSValueRef>(JSC::jsAPIValueWrapper(exec, v).asCell());
115    return reinterpret_cast<JSValueRef>(v.asCell());
116#else
117    UNUSED_PARAM(exec);
118    return reinterpret_cast<JSValueRef>(JSC::JSValue::encode(v));
119#endif
120}
121
122inline JSObjectRef toRef(JSC::JSObject* o)
123{
124    return reinterpret_cast<JSObjectRef>(o);
125}
126
127inline JSObjectRef toRef(const JSC::JSObject* o)
128{
129    return reinterpret_cast<JSObjectRef>(const_cast<JSC::JSObject*>(o));
130}
131
132inline JSContextRef toRef(JSC::ExecState* e)
133{
134    return reinterpret_cast<JSContextRef>(e);
135}
136
137inline JSGlobalContextRef toGlobalRef(JSC::ExecState* e)
138{
139    ASSERT(e == e->lexicalGlobalObject()->globalExec());
140    return reinterpret_cast<JSGlobalContextRef>(e);
141}
142
143inline JSPropertyNameAccumulatorRef toRef(JSC::PropertyNameArray* l)
144{
145    return reinterpret_cast<JSPropertyNameAccumulatorRef>(l);
146}
147
148inline JSContextGroupRef toRef(JSC::JSGlobalData* g)
149{
150    return reinterpret_cast<JSContextGroupRef>(g);
151}
152
153#endif // APICast_h
154