JavaScriptCore-7603.1.30.0.34

Author: Andrew Hyatt

API/APICallbackFunction.h

@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2013, 2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#ifndef APICallbackFunction_h
+#define APICallbackFunction_h
+
+#include "APICast.h"
+#include "Error.h"
+#include "JSCallbackConstructor.h"
+#include "JSLock.h"
+#include <wtf/Vector.h>
+
+namespace JSC {
+
+struct APICallbackFunction {
+
+template <typename T> static EncodedJSValue JSC_HOST_CALL call(ExecState*);
+template <typename T> static EncodedJSValue JSC_HOST_CALL construct(ExecState*);
+
+};
+
+template <typename T>
+EncodedJSValue JSC_HOST_CALL APICallbackFunction::call(ExecState* exec)
+{
+    VM& vm = exec->vm();
+    auto scope = DECLARE_THROW_SCOPE(vm);
+    JSContextRef execRef = toRef(exec);
+    JSObjectRef functionRef = toRef(exec->jsCallee());
+    JSObjectRef thisObjRef = toRef(jsCast<JSObject*>(exec->thisValue().toThis(exec, NotStrictMode)));
+
+    int argumentCount = static_cast<int>(exec->argumentCount());
+    Vector<JSValueRef, 16> arguments;
+    arguments.reserveInitialCapacity(argumentCount);
+    for (int i = 0; i < argumentCount; i++)
+        arguments.uncheckedAppend(toRef(exec, exec->uncheckedArgument(i)));
+
+    JSValueRef exception = 0;
+    JSValueRef result;
+    {
+        JSLock::DropAllLocks dropAllLocks(exec);
+        result = jsCast<T*>(toJS(functionRef))->functionCallback()(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), &exception);
+    }
+    if (exception)
+        throwException(exec, scope, toJS(exec, exception));
+
+    // result must be a valid JSValue.
+    if (!result)
+        return JSValue::encode(jsUndefined());
+
+    return JSValue::encode(toJS(exec, result));
+}
+
+template <typename T>
+EncodedJSValue JSC_HOST_CALL APICallbackFunction::construct(ExecState* exec)
+{
+    VM& vm = exec->vm();
+    auto scope = DECLARE_THROW_SCOPE(vm);
+    JSObject* constructor = exec->jsCallee();
+    JSContextRef ctx = toRef(exec);
+    JSObjectRef constructorRef = toRef(constructor);
+
+    JSObjectCallAsConstructorCallback callback = jsCast<T*>(constructor)->constructCallback();
+    if (callback) {
+        size_t argumentCount = exec->argumentCount();
+        Vector<JSValueRef, 16> arguments;
+        arguments.reserveInitialCapacity(argumentCount);
+        for (size_t i = 0; i < argumentCount; ++i)
+            arguments.uncheckedAppend(toRef(exec, exec->uncheckedArgument(i)));
+
+        JSValueRef exception = 0;
+        JSObjectRef result;
+        {
+            JSLock::DropAllLocks dropAllLocks(exec);
+            result = callback(ctx, constructorRef, argumentCount, arguments.data(), &exception);
+        }
+        if (exception) {
+            throwException(exec, scope, toJS(exec, exception));
+            return JSValue::encode(toJS(exec, exception));
+        }
+        // result must be a valid JSValue.
+        if (!result)
+            return throwVMTypeError(exec, scope);
+        return JSValue::encode(toJS(result));
+    }
+    
+    return JSValue::encode(toJS(JSObjectMake(ctx, jsCast<JSCallbackConstructor*>(constructor)->classRef(), 0)));
+}
+
+} // namespace JSC
+
+#endif // APICallbackFunction_h

API/APICast.h

@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2006 Apple Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#ifndef APICast_h
+#define APICast_h
+
+#include "JSAPIValueWrapper.h"
+#include "JSCJSValue.h"
+#include "JSCJSValueInlines.h"
+#include "JSGlobalObject.h"
+
+namespace JSC {
+    class ExecState;
+    class PropertyNameArray;
+    class VM;
+    class JSObject;
+    class JSValue;
+}
+
+typedef const struct OpaqueJSContextGroup* JSContextGroupRef;
+typedef const struct OpaqueJSContext* JSContextRef;
+typedef struct OpaqueJSContext* JSGlobalContextRef;
+typedef struct OpaqueJSPropertyNameAccumulator* JSPropertyNameAccumulatorRef;
+typedef const struct OpaqueJSValue* JSValueRef;
+typedef struct OpaqueJSValue* JSObjectRef;
+
+/* Opaque typing convenience methods */
+
+inline JSC::ExecState* toJS(JSContextRef c)
+{
+    ASSERT(c);
+    return reinterpret_cast<JSC::ExecState*>(const_cast<OpaqueJSContext*>(c));
+}
+
+inline JSC::ExecState* toJS(JSGlobalContextRef c)
+{
+    ASSERT(c);
+    return reinterpret_cast<JSC::ExecState*>(c);
+}
+
+inline JSC::JSValue toJS(JSC::ExecState* exec, JSValueRef v)
+{
+    ASSERT_UNUSED(exec, exec);
+#if USE(JSVALUE32_64)
+    JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v));
+    if (!jsCell)
+        return JSC::jsNull();
+    JSC::JSValue result;
+    if (jsCell->isAPIValueWrapper())
+        result = JSC::jsCast<JSC::JSAPIValueWrapper*>(jsCell)->value();
+    else
+        result = jsCell;
+#else
+    JSC::JSValue result = JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v)));
+#endif
+    if (!result)
+        return JSC::jsNull();
+    if (result.isCell())
+        RELEASE_ASSERT(result.asCell()->methodTable());
+    return result;
+}
+
+inline JSC::JSValue toJSForGC(JSC::ExecState* exec, JSValueRef v)
+{
+    ASSERT_UNUSED(exec, exec);
+#if USE(JSVALUE32_64)
+    JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v));
+    if (!jsCell)
+        return JSC::JSValue();
+    JSC::JSValue result = jsCell;
+#else
+    JSC::JSValue result = JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v)));
+#endif
+    if (result && result.isCell())
+        RELEASE_ASSERT(result.asCell()->methodTable());
+    return result;
+}
+
+// Used in JSObjectGetPrivate as that may be called during finalization
+inline JSC::JSObject* uncheckedToJS(JSObjectRef o)
+{
+    return reinterpret_cast<JSC::JSObject*>(o);
+}
+
+inline JSC::JSObject* toJS(JSObjectRef o)
+{
+    JSC::JSObject* object = uncheckedToJS(o);
+    if (object)
+        RELEASE_ASSERT(object->methodTable());
+    return object;
+}
+
+inline JSC::PropertyNameArray* toJS(JSPropertyNameAccumulatorRef a)
+{
+    return reinterpret_cast<JSC::PropertyNameArray*>(a);
+}
+
+inline JSC::VM* toJS(JSContextGroupRef g)
+{
+    return reinterpret_cast<JSC::VM*>(const_cast<OpaqueJSContextGroup*>(g));
+}
+
+inline JSValueRef toRef(JSC::ExecState* exec, JSC::JSValue v)
+{
+    ASSERT(exec->vm().currentThreadIsHoldingAPILock());
+#if USE(JSVALUE32_64)
+    if (!v)
+        return 0;
+    if (!v.isCell())
+        return reinterpret_cast<JSValueRef>(JSC::jsAPIValueWrapper(exec, v).asCell());
+    return reinterpret_cast<JSValueRef>(v.asCell());
+#else
+    UNUSED_PARAM(exec);
+    return reinterpret_cast<JSValueRef>(JSC::JSValue::encode(v));
+#endif
+}
+
+inline JSObjectRef toRef(JSC::JSObject* o)
+{
+    return reinterpret_cast<JSObjectRef>(o);
+}
+
+inline JSObjectRef toRef(const JSC::JSObject* o)
+{
+    return reinterpret_cast<JSObjectRef>(const_cast<JSC::JSObject*>(o));
+}
+
+inline JSContextRef toRef(JSC::ExecState* e)
+{
+    return reinterpret_cast<JSContextRef>(e);
+}
+
+inline JSGlobalContextRef toGlobalRef(JSC::ExecState* e)
+{
+    ASSERT(e == e->lexicalGlobalObject()->globalExec());
+    return reinterpret_cast<JSGlobalContextRef>(e);
+}
+
+inline JSPropertyNameAccumulatorRef toRef(JSC::PropertyNameArray* l)
+{
+    return reinterpret_cast<JSPropertyNameAccumulatorRef>(l);
+}
+
+inline JSContextGroupRef toRef(JSC::VM* g)
+{
+    return reinterpret_cast<JSContextGroupRef>(g);
+}
+
+#endif // APICast_h

API/APIUtils.h

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef APIUtils_h
+#define APIUtils_h
+
+#include "Exception.h"
+#include "JSCJSValue.h"
+#include "JSGlobalObjectInspectorController.h"
+#include "JSValueRef.h"
+
+enum class ExceptionStatus {
+    DidThrow,
+    DidNotThrow
+};
+
+inline ExceptionStatus handleExceptionIfNeeded(JSC::ExecState* exec, JSValueRef* returnedExceptionRef)
+{
+    JSC::VM& vm = exec->vm();
+    auto scope = DECLARE_CATCH_SCOPE(vm);
+    if (UNLIKELY(scope.exception())) {
+        JSC::Exception* exception = scope.exception();
+        if (returnedExceptionRef)
+            *returnedExceptionRef = toRef(exec, exception->value());
+        scope.clearException();
+#if ENABLE(REMOTE_INSPECTOR)
+        exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, exception);
+#endif
+        return ExceptionStatus::DidThrow;
+    }
+    return ExceptionStatus::DidNotThrow;
+}
+
+inline void setException(JSC::ExecState* exec, JSValueRef* returnedExceptionRef, JSC::JSValue exception)
+{
+    if (returnedExceptionRef)
+        *returnedExceptionRef = toRef(exec, exception);
+#if ENABLE(REMOTE_INSPECTOR)
+    exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, JSC::Exception::create(exec->vm(), exception));
+#endif
+}
+
+#endif /* APIUtils_h */