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 34 namespace JSC { 35 class ExecState; 36 class PropertyNameArray; 37 class JSGlobalData; 38 class JSObject; 39 class JSValue; 40 } 41 42 typedef const struct OpaqueJSContextGroup* JSContextGroupRef; 43 typedef const struct OpaqueJSContext* JSContextRef; 44 typedef struct OpaqueJSContext* JSGlobalContextRef; 45 typedef struct OpaqueJSPropertyNameAccumulator* JSPropertyNameAccumulatorRef; 46 typedef const struct OpaqueJSValue* JSValueRef; 47 typedef struct OpaqueJSValue* JSObjectRef; 48 49 /* Opaque typing convenience methods */ 50 51 inline JSC::ExecState* toJS(JSContextRef c) 52 { 53 ASSERT(c); 54 return reinterpret_cast<JSC::ExecState*>(const_cast<OpaqueJSContext*>(c)); 55 } 56 57 inline JSC::ExecState* toJS(JSGlobalContextRef c) 58 { 59 ASSERT(c); 60 return reinterpret_cast<JSC::ExecState*>(c); 61 } 62 63 inline 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 79 inline 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 93 inline JSC::JSObject* toJS(JSObjectRef o) 94 { 95 return reinterpret_cast<JSC::JSObject*>(o); 96 } 97 98 inline JSC::PropertyNameArray* toJS(JSPropertyNameAccumulatorRef a) 99 { 100 return reinterpret_cast<JSC::PropertyNameArray*>(a); 101 } 102 103 inline JSC::JSGlobalData* toJS(JSContextGroupRef g) 104 { 105 return reinterpret_cast<JSC::JSGlobalData*>(const_cast<OpaqueJSContextGroup*>(g)); 106 } 107 108 inline 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 } 121 122 inline JSObjectRef toRef(JSC::JSObject* o) 123 { 124 return reinterpret_cast<JSObjectRef>(o); 125 } 126 127 inline JSObjectRef toRef(const JSC::JSObject* o) 128 { 129 return reinterpret_cast<JSObjectRef>(const_cast<JSC::JSObject*>(o)); 130 } 131 132 inline JSContextRef toRef(JSC::ExecState* e) 133 { 134 return reinterpret_cast<JSContextRef>(e); 135 } 136 137 inline JSGlobalContextRef toGlobalRef(JSC::ExecState* e) 138 { 139 ASSERT(e == e->lexicalGlobalObject()->globalExec()); 140 return reinterpret_cast<JSGlobalContextRef>(e); 141 } 142 143 inline JSPropertyNameAccumulatorRef toRef(JSC::PropertyNameArray* l) 144 { 145 return reinterpret_cast<JSPropertyNameAccumulatorRef>(l); 146 } 147 148 inline JSContextGroupRef toRef(JSC::JSGlobalData* g) 149 { 150 return reinterpret_cast<JSContextGroupRef>(g); 151 } 152 153 #endif // APICast_h 154