1/*
2 * Copyright (C) 2006 Apple 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 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 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 "JSCJSValue.h"
31#include "JSCJSValueInlines.h"
32#include "JSGlobalObject.h"
33
34namespace JSC {
35 class ExecState;
36 class PropertyNameArray;
37 class VM;
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#if USE(JSVALUE32_64)
67 JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v));
68 if (!jsCell)
69 return JSC::jsNull();
70 JSC::JSValue result;
71 if (jsCell->isAPIValueWrapper())
72 result = JSC::jsCast<JSC::JSAPIValueWrapper*>(jsCell)->value();
73 else
74 result = jsCell;
75#else
76 JSC::JSValue result = JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v)));
77#endif
78 if (!result)
79 return JSC::jsNull();
80 if (result.isCell())
81 RELEASE_ASSERT(result.asCell()->methodTable());
82 return result;
83}
84
85inline JSC::JSValue toJSForGC(JSC::ExecState* exec, JSValueRef v)
86{
87 ASSERT_UNUSED(exec, exec);
88#if USE(JSVALUE32_64)
89 JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v));
90 if (!jsCell)
91 return JSC::JSValue();
92 JSC::JSValue result = jsCell;
93#else
94 JSC::JSValue result = JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v)));
95#endif
96 if (result && result.isCell())
97 RELEASE_ASSERT(result.asCell()->methodTable());
98 return result;
99}
100
101// Used in JSObjectGetPrivate as that may be called during finalization
102inline JSC::JSObject* uncheckedToJS(JSObjectRef o)
103{
104 return reinterpret_cast<JSC::JSObject*>(o);
105}
106
107inline JSC::JSObject* toJS(JSObjectRef o)
108{
109 JSC::JSObject* object = uncheckedToJS(o);
110 if (object)
111 RELEASE_ASSERT(object->methodTable());
112 return object;
113}
114
115inline JSC::PropertyNameArray* toJS(JSPropertyNameAccumulatorRef a)
116{
117 return reinterpret_cast<JSC::PropertyNameArray*>(a);
118}
119
120inline JSC::VM* toJS(JSContextGroupRef g)
121{
122 return reinterpret_cast<JSC::VM*>(const_cast<OpaqueJSContextGroup*>(g));
123}
124
125inline JSValueRef toRef(JSC::ExecState* exec, JSC::JSValue v)
126{
127 ASSERT(exec->vm().currentThreadIsHoldingAPILock());
128#if USE(JSVALUE32_64)
129 if (!v)
130 return 0;
131 if (!v.isCell())
132 return reinterpret_cast<JSValueRef>(JSC::jsAPIValueWrapper(exec, v).asCell());
133 return reinterpret_cast<JSValueRef>(v.asCell());
134#else
135 UNUSED_PARAM(exec);
136 return reinterpret_cast<JSValueRef>(JSC::JSValue::encode(v));
137#endif
138}
139
140inline JSObjectRef toRef(JSC::JSObject* o)
141{
142 return reinterpret_cast<JSObjectRef>(o);
143}
144
145inline JSObjectRef toRef(const JSC::JSObject* o)
146{
147 return reinterpret_cast<JSObjectRef>(const_cast<JSC::JSObject*>(o));
148}
149
150inline JSContextRef toRef(JSC::ExecState* e)
151{
152 return reinterpret_cast<JSContextRef>(e);
153}
154
155inline JSGlobalContextRef toGlobalRef(JSC::ExecState* e)
156{
157 ASSERT(e == e->lexicalGlobalObject()->globalExec());
158 return reinterpret_cast<JSGlobalContextRef>(e);
159}
160
161inline JSPropertyNameAccumulatorRef toRef(JSC::PropertyNameArray* l)
162{
163 return reinterpret_cast<JSPropertyNameAccumulatorRef>(l);
164}
165
166inline JSContextGroupRef toRef(JSC::VM* g)
167{
168 return reinterpret_cast<JSContextGroupRef>(g);
169}
170
171#endif // APICast_h
172