Imported QtWebKit TP3 (git b57bc6801f1876c3220d5a4bfea33d620d477443)

Change-Id: I3b1d8a2808782c9f34d50240000e20cb38d3680f
Reviewed-by: Konstantin Tokarev <annulen@yandex.ru>

1 files changed, 135 insertions, 125 deletions

diff --git a/Source/JavaScriptCore/API/JSObjectRef.cpp b/Source/JavaScriptCore/API/JSObjectRef.cpp
index 5ba446513..78efc2461 100644
--- a/Source/JavaScriptCore/API/JSObjectRef.cpp
+++ b/Source/JavaScriptCore/API/JSObjectRef.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2006, 2007, 2008, 2016 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Kelvin W Sherlock (ksherlock@gmail.com)
  *
  * Redistribution and use in source and binary forms, with or without
@@ -11,17 +11,17 @@
  *    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 COMPUTER, INC. ``AS IS'' AND ANY
+ * 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 COMPUTER, INC. OR
+ * 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. 
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
@@ -34,6 +34,7 @@
 #include "CopiedSpaceInlines.h"
 #include "DateConstructor.h"
 #include "ErrorConstructor.h"
+#include "Exception.h"
 #include "FunctionConstructor.h"
 #include "Identifier.h"
 #include "InitializeThreading.h"
@@ -51,12 +52,36 @@
 #include "JSValueRef.h"
 #include "ObjectConstructor.h"
 #include "ObjectPrototype.h"
-#include "Operations.h"
+#include "JSCInlines.h"
 #include "PropertyNameArray.h"
 #include "RegExpConstructor.h"
 
+#if ENABLE(REMOTE_INSPECTOR)
+#include "JSGlobalObjectInspectorController.h"
+#endif
+
 using namespace JSC;
 
+enum class ExceptionStatus {
+    DidThrow,
+    DidNotThrow
+};
+
+static ExceptionStatus handleExceptionIfNeeded(ExecState* exec, JSValueRef* returnedExceptionRef)
+{
+    if (exec->hadException()) {
+        Exception* exception = exec->exception();
+        if (returnedExceptionRef)
+            *returnedExceptionRef = toRef(exec, exception->value());
+        exec->clearException();
+#if ENABLE(REMOTE_INSPECTOR)
+        exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, exception);
+#endif
+        return ExceptionStatus::DidThrow;
+    }
+    return ExceptionStatus::DidNotThrow;
+}
+
 JSClassRef JSClassCreate(const JSClassDefinition* definition)
 {
     initializeThreading();
@@ -85,7 +110,7 @@ JSObjectRef JSObjectMake(JSContextRef ctx, JSClassRef jsClass, void* data)
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     if (!jsClass)
         return toRef(constructEmptyObject(exec));
@@ -104,8 +129,8 @@ JSObjectRef JSObjectMakeFunctionWithCallback(JSContextRef ctx, JSStringRef name,
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
-    return toRef(JSCallbackFunction::create(exec, exec->lexicalGlobalObject(), callAsFunction, name ? name->string() : ASCIILiteral("anonymous")));
+    JSLockHolder locker(exec);
+    return toRef(JSCallbackFunction::create(exec->vm(), exec->lexicalGlobalObject(), callAsFunction, name ? name->string() : ASCIILiteral("anonymous")));
 }
 
 JSObjectRef JSObjectMakeConstructor(JSContextRef ctx, JSClassRef jsClass, JSObjectCallAsConstructorCallback callAsConstructor)
@@ -115,7 +140,7 @@ JSObjectRef JSObjectMakeConstructor(JSContextRef ctx, JSClassRef jsClass, JSObje
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSValue jsPrototype = jsClass ? jsClass->prototype(exec) : 0;
     if (!jsPrototype)
@@ -133,22 +158,19 @@ JSObjectRef JSObjectMakeFunction(JSContextRef ctx, JSStringRef name, unsigned pa
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
-    Identifier nameID = name ? name->identifier(&exec->vm()) : Identifier(exec, "anonymous");
+    startingLineNumber = std::max(1, startingLineNumber);
+    Identifier nameID = name ? name->identifier(&exec->vm()) : Identifier::fromString(exec, "anonymous");
     
     MarkedArgumentBuffer args;
     for (unsigned i = 0; i < parameterCount; i++)
         args.append(jsString(exec, parameterNames[i]->string()));
     args.append(jsString(exec, body->string()));
 
-    JSObject* result = constructFunction(exec, exec->lexicalGlobalObject(), args, nameID, sourceURL->string(), TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()));
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
+    JSObject* result = constructFunction(exec, exec->lexicalGlobalObject(), args, nameID, sourceURL ? sourceURL->string() : String(), TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()));
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
         result = 0;
-    }
     return toRef(result);
 }
 
@@ -159,7 +181,7 @@ JSObjectRef JSObjectMakeArray(JSContextRef ctx, size_t argumentCount, const JSVa
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSObject* result;
     if (argumentCount) {
@@ -171,12 +193,8 @@ JSObjectRef JSObjectMakeArray(JSContextRef ctx, size_t argumentCount, const JSVa
     } else
         result = constructEmptyArray(exec, 0);
 
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
         result = 0;
-    }
 
     return toRef(result);
 }
@@ -188,19 +206,15 @@ JSObjectRef JSObjectMakeDate(JSContextRef ctx, size_t argumentCount, const JSVal
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     MarkedArgumentBuffer argList;
     for (size_t i = 0; i < argumentCount; ++i)
         argList.append(toJS(exec, arguments[i]));
 
-    JSObject* result = constructDate(exec, exec->lexicalGlobalObject(), argList);
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
+    JSObject* result = constructDate(exec, exec->lexicalGlobalObject(), JSValue(), argList);
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
         result = 0;
-    }
 
     return toRef(result);
 }
@@ -212,18 +226,14 @@ JSObjectRef JSObjectMakeError(JSContextRef ctx, size_t argumentCount, const JSVa
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSValue message = argumentCount ? toJS(exec, arguments[0]) : jsUndefined();
     Structure* errorStructure = exec->lexicalGlobalObject()->errorStructure();
     JSObject* result = ErrorInstance::create(exec, errorStructure, message);
 
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
         result = 0;
-    }
 
     return toRef(result);
 }
@@ -235,19 +245,15 @@ JSObjectRef JSObjectMakeRegExp(JSContextRef ctx, size_t argumentCount, const JSV
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     MarkedArgumentBuffer argList;
     for (size_t i = 0; i < argumentCount; ++i)
         argList.append(toJS(exec, arguments[i]));
 
-    JSObject* result = constructRegExp(exec, exec->lexicalGlobalObject(),  argList);
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
+    JSObject* result = constructRegExp(exec, exec->lexicalGlobalObject(), argList);
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
         result = 0;
-    }
     
     return toRef(result);
 }
@@ -259,7 +265,7 @@ JSValueRef JSObjectGetPrototype(JSContextRef ctx, JSObjectRef object)
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSObject* jsObject = toJS(object);
     return toRef(exec, jsObject->prototype());
@@ -272,12 +278,20 @@ void JSObjectSetPrototype(JSContextRef ctx, JSObjectRef object, JSValueRef value
         return;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSObject* jsObject = toJS(object);
     JSValue jsValue = toJS(exec, value);
 
-    jsObject->setPrototypeWithCycleCheck(exec->vm(), jsValue.isObject() ? jsValue : jsNull());
+    if (JSProxy* proxy = jsDynamicCast<JSProxy*>(jsObject)) {
+        if (JSGlobalObject* globalObject = jsDynamicCast<JSGlobalObject*>(proxy->target())) {
+            globalObject->resetPrototype(exec->vm(), jsValue.isObject() ? jsValue : jsNull());
+            return;
+        }
+        // Someday we might use proxies for something other than JSGlobalObjects, but today is not that day.
+        RELEASE_ASSERT_NOT_REACHED();
+    }
+    jsObject->setPrototypeWithCycleCheck(exec, jsValue.isObject() ? jsValue : jsNull());
 }
 
 bool JSObjectHasProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName)
@@ -287,7 +301,7 @@ bool JSObjectHasProperty(JSContextRef ctx, JSObjectRef object, JSStringRef prope
         return false;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSObject* jsObject = toJS(object);
     
@@ -301,16 +315,12 @@ JSValueRef JSObjectGetProperty(JSContextRef ctx, JSObjectRef object, JSStringRef
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSObject* jsObject = toJS(object);
 
     JSValue jsValue = jsObject->get(exec, propertyName->identifier(&exec->vm()));
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
-    }
+    handleExceptionIfNeeded(exec, exception);
     return toRef(exec, jsValue);
 }
 
@@ -321,24 +331,21 @@ void JSObjectSetProperty(JSContextRef ctx, JSObjectRef object, JSStringRef prope
         return;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSObject* jsObject = toJS(object);
     Identifier name(propertyName->identifier(&exec->vm()));
     JSValue jsValue = toJS(exec, value);
 
-    if (attributes && !jsObject->hasProperty(exec, name))
-        jsObject->methodTable()->putDirectVirtual(jsObject, exec, name, jsValue, attributes);
-    else {
-        PutPropertySlot slot;
+    if (attributes && !jsObject->hasProperty(exec, name)) {
+        PropertyDescriptor desc(jsValue, attributes);
+        jsObject->methodTable()->defineOwnProperty(jsObject, exec, name, desc, false);
+    } else {
+        PutPropertySlot slot(jsObject);
         jsObject->methodTable()->put(jsObject, exec, name, jsValue, slot);
     }
 
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
-    }
+    handleExceptionIfNeeded(exec, exception);
 }
 
 JSValueRef JSObjectGetPropertyAtIndex(JSContextRef ctx, JSObjectRef object, unsigned propertyIndex, JSValueRef* exception)
@@ -348,16 +355,12 @@ JSValueRef JSObjectGetPropertyAtIndex(JSContextRef ctx, JSObjectRef object, unsi
         return 0;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSObject* jsObject = toJS(object);
 
     JSValue jsValue = jsObject->get(exec, propertyIndex);
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
-    }
+    handleExceptionIfNeeded(exec, exception);
     return toRef(exec, jsValue);
 }
 
@@ -369,17 +372,13 @@ void JSObjectSetPropertyAtIndex(JSContextRef ctx, JSObjectRef object, unsigned p
         return;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSObject* jsObject = toJS(object);
     JSValue jsValue = toJS(exec, value);
     
     jsObject->methodTable()->putByIndex(jsObject, exec, propertyIndex, jsValue, false);
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
-    }
+    handleExceptionIfNeeded(exec, exception);
 }
 
 bool JSObjectDeleteProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception)
@@ -389,29 +388,29 @@ bool JSObjectDeleteProperty(JSContextRef ctx, JSObjectRef object, JSStringRef pr
         return false;
     }
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     JSObject* jsObject = toJS(object);
 
     bool result = jsObject->methodTable()->deleteProperty(jsObject, exec, propertyName->identifier(&exec->vm()));
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
-    }
+    handleExceptionIfNeeded(exec, exception);
     return result;
 }
 
 void* JSObjectGetPrivate(JSObjectRef object)
 {
     JSObject* jsObject = uncheckedToJS(object);
-    
-    if (jsObject->inherits(&JSCallbackObject<JSGlobalObject>::s_info))
+
+    // Get wrapped object if proxied
+    if (jsObject->inherits(JSProxy::info()))
+        jsObject = jsCast<JSProxy*>(jsObject)->target();
+
+    if (jsObject->inherits(JSCallbackObject<JSGlobalObject>::info()))
         return jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->getPrivate();
-    if (jsObject->inherits(&JSCallbackObject<JSDestructibleObject>::s_info))
+    if (jsObject->inherits(JSCallbackObject<JSDestructibleObject>::info()))
         return jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->getPrivate();
 #if JSC_OBJC_API_ENABLED
-    if (jsObject->inherits(&JSCallbackObject<JSAPIWrapperObject>::s_info))
+    if (jsObject->inherits(JSCallbackObject<JSAPIWrapperObject>::info()))
         return jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->getPrivate();
 #endif
     
@@ -421,17 +420,21 @@ void* JSObjectGetPrivate(JSObjectRef object)
 bool JSObjectSetPrivate(JSObjectRef object, void* data)
 {
     JSObject* jsObject = uncheckedToJS(object);
-    
-    if (jsObject->inherits(&JSCallbackObject<JSGlobalObject>::s_info)) {
+
+    // Get wrapped object if proxied
+    if (jsObject->inherits(JSProxy::info()))
+        jsObject = jsCast<JSProxy*>(jsObject)->target();
+
+    if (jsObject->inherits(JSCallbackObject<JSGlobalObject>::info())) {
         jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->setPrivate(data);
         return true;
     }
-    if (jsObject->inherits(&JSCallbackObject<JSDestructibleObject>::s_info)) {
+    if (jsObject->inherits(JSCallbackObject<JSDestructibleObject>::info())) {
         jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->setPrivate(data);
         return true;
     }
 #if JSC_OBJC_API_ENABLED
-    if (jsObject->inherits(&JSCallbackObject<JSAPIWrapperObject>::s_info)) {
+    if (jsObject->inherits(JSCallbackObject<JSAPIWrapperObject>::info())) {
         jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->setPrivate(data);
         return true;
     }
@@ -443,16 +446,21 @@ bool JSObjectSetPrivate(JSObjectRef object, void* data)
 JSValueRef JSObjectGetPrivateProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName)
 {
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
     JSObject* jsObject = toJS(object);
     JSValue result;
     Identifier name(propertyName->identifier(&exec->vm()));
-    if (jsObject->inherits(&JSCallbackObject<JSGlobalObject>::s_info))
+
+    // Get wrapped object if proxied
+    if (jsObject->inherits(JSProxy::info()))
+        jsObject = jsCast<JSProxy*>(jsObject)->target();
+
+    if (jsObject->inherits(JSCallbackObject<JSGlobalObject>::info()))
         result = jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->getPrivateProperty(name);
-    else if (jsObject->inherits(&JSCallbackObject<JSDestructibleObject>::s_info))
+    else if (jsObject->inherits(JSCallbackObject<JSDestructibleObject>::info()))
         result = jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->getPrivateProperty(name);
 #if JSC_OBJC_API_ENABLED
-    else if (jsObject->inherits(&JSCallbackObject<JSAPIWrapperObject>::s_info))
+    else if (jsObject->inherits(JSCallbackObject<JSAPIWrapperObject>::info()))
         result = jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->getPrivateProperty(name);
 #endif
     return toRef(exec, result);
@@ -461,20 +469,25 @@ JSValueRef JSObjectGetPrivateProperty(JSContextRef ctx, JSObjectRef object, JSSt
 bool JSObjectSetPrivateProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef value)
 {
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
     JSObject* jsObject = toJS(object);
     JSValue jsValue = value ? toJS(exec, value) : JSValue();
     Identifier name(propertyName->identifier(&exec->vm()));
-    if (jsObject->inherits(&JSCallbackObject<JSGlobalObject>::s_info)) {
+
+    // Get wrapped object if proxied
+    if (jsObject->inherits(JSProxy::info()))
+        jsObject = jsCast<JSProxy*>(jsObject)->target();
+
+    if (jsObject->inherits(JSCallbackObject<JSGlobalObject>::info())) {
         jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->setPrivateProperty(exec->vm(), name, jsValue);
         return true;
     }
-    if (jsObject->inherits(&JSCallbackObject<JSDestructibleObject>::s_info)) {
+    if (jsObject->inherits(JSCallbackObject<JSDestructibleObject>::info())) {
         jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->setPrivateProperty(exec->vm(), name, jsValue);
         return true;
     }
 #if JSC_OBJC_API_ENABLED
-    if (jsObject->inherits(&JSCallbackObject<JSAPIWrapperObject>::s_info)) {
+    if (jsObject->inherits(JSCallbackObject<JSAPIWrapperObject>::info())) {
         jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->setPrivateProperty(exec->vm(), name, jsValue);
         return true;
     }
@@ -485,19 +498,24 @@ bool JSObjectSetPrivateProperty(JSContextRef ctx, JSObjectRef object, JSStringRe
 bool JSObjectDeletePrivateProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName)
 {
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
     JSObject* jsObject = toJS(object);
     Identifier name(propertyName->identifier(&exec->vm()));
-    if (jsObject->inherits(&JSCallbackObject<JSGlobalObject>::s_info)) {
+
+    // Get wrapped object if proxied
+    if (jsObject->inherits(JSProxy::info()))
+        jsObject = jsCast<JSProxy*>(jsObject)->target();
+
+    if (jsObject->inherits(JSCallbackObject<JSGlobalObject>::info())) {
         jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->deletePrivateProperty(name);
         return true;
     }
-    if (jsObject->inherits(&JSCallbackObject<JSDestructibleObject>::s_info)) {
+    if (jsObject->inherits(JSCallbackObject<JSDestructibleObject>::info())) {
         jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->deletePrivateProperty(name);
         return true;
     }
 #if JSC_OBJC_API_ENABLED
-    if (jsObject->inherits(&JSCallbackObject<JSAPIWrapperObject>::s_info)) {
+    if (jsObject->inherits(JSCallbackObject<JSAPIWrapperObject>::info())) {
         jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->deletePrivateProperty(name);
         return true;
     }
@@ -505,10 +523,11 @@ bool JSObjectDeletePrivateProperty(JSContextRef ctx, JSObjectRef object, JSStrin
     return false;
 }
 
-bool JSObjectIsFunction(JSContextRef, JSObjectRef object)
+bool JSObjectIsFunction(JSContextRef ctx, JSObjectRef object)
 {
     if (!object)
         return false;
+    JSLockHolder locker(toJS(ctx));
     CallData callData;
     JSCell* cell = toJS(object);
     return cell->methodTable()->getCallData(cell, callData) != CallTypeNone;
@@ -517,7 +536,7 @@ bool JSObjectIsFunction(JSContextRef, JSObjectRef object)
 JSValueRef JSObjectCallAsFunction(JSContextRef ctx, JSObjectRef object, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
 {
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     if (!object)
         return 0;
@@ -528,8 +547,6 @@ JSValueRef JSObjectCallAsFunction(JSContextRef ctx, JSObjectRef object, JSObject
     if (!jsThisObject)
         jsThisObject = exec->globalThisValue();
 
-    jsThisObject = jsThisObject->methodTable()->toThisObject(jsThisObject, exec);
-    
     MarkedArgumentBuffer argList;
     for (size_t i = 0; i < argumentCount; i++)
         argList.append(toJS(exec, arguments[i]));
@@ -539,13 +556,9 @@ JSValueRef JSObjectCallAsFunction(JSContextRef ctx, JSObjectRef object, JSObject
     if (callType == CallTypeNone)
         return 0;
 
-    JSValueRef result = toRef(exec, call(exec, jsObject, callType, callData, jsThisObject, argList));
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
+    JSValueRef result = toRef(exec, profiledCall(exec, ProfilingReason::API, jsObject, callType, callData, jsThisObject, argList));
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
         result = 0;
-    }
     return result;
 }
 
@@ -561,7 +574,7 @@ bool JSObjectIsConstructor(JSContextRef, JSObjectRef object)
 JSObjectRef JSObjectCallAsConstructor(JSContextRef ctx, JSObjectRef object, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
 {
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     if (!object)
         return 0;
@@ -576,13 +589,10 @@ JSObjectRef JSObjectCallAsConstructor(JSContextRef ctx, JSObjectRef object, size
     MarkedArgumentBuffer argList;
     for (size_t i = 0; i < argumentCount; i++)
         argList.append(toJS(exec, arguments[i]));
-    JSObjectRef result = toRef(construct(exec, jsObject, constructType, constructData, argList));
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec, exec->exception());
-        exec->clearException();
+
+    JSObjectRef result = toRef(profiledConstruct(exec, ProfilingReason::API, jsObject, constructType, constructData, argList));
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
         result = 0;
-    }
     return result;
 }
 
@@ -597,7 +607,7 @@ public:
     
     unsigned refCount;
     VM* vm;
-    Vector<JSRetainPtr<JSStringRef> > array;
+    Vector<JSRetainPtr<JSStringRef>> array;
 };
 
 JSPropertyNameArrayRef JSObjectCopyPropertyNames(JSContextRef ctx, JSObjectRef object)
@@ -606,15 +616,15 @@ JSPropertyNameArrayRef JSObjectCopyPropertyNames(JSContextRef ctx, JSObjectRef o
         ASSERT_NOT_REACHED();
         return 0;
     }
-    JSObject* jsObject = toJS(object);
     ExecState* exec = toJS(ctx);
-    APIEntryShim entryShim(exec);
+    JSLockHolder locker(exec);
 
     VM* vm = &exec->vm();
 
+    JSObject* jsObject = toJS(object);
     JSPropertyNameArrayRef propertyNames = new OpaqueJSPropertyNameArray(vm);
-    PropertyNameArray array(vm);
-    jsObject->methodTable()->getPropertyNames(jsObject, exec, array, ExcludeDontEnumProperties);
+    PropertyNameArray array(vm, PropertyNameMode::Strings);
+    jsObject->methodTable()->getPropertyNames(jsObject, exec, array, EnumerationMode());
 
     size_t size = array.size();
     propertyNames->array.reserveInitialCapacity(size);
@@ -633,7 +643,7 @@ JSPropertyNameArrayRef JSPropertyNameArrayRetain(JSPropertyNameArrayRef array)
 void JSPropertyNameArrayRelease(JSPropertyNameArrayRef array)
 {
     if (--array->refCount == 0) {
-        APIEntryShim entryShim(array->vm, false);
+        JSLockHolder locker(array->vm);
         delete array;
     }
 }
@@ -651,6 +661,6 @@ JSStringRef JSPropertyNameArrayGetNameAtIndex(JSPropertyNameArrayRef array, size
 void JSPropertyNameAccumulatorAddName(JSPropertyNameAccumulatorRef array, JSStringRef propertyName)
 {
     PropertyNameArray* propertyNames = toJS(array);
-    APIEntryShim entryShim(propertyNames->vm());
+    JSLockHolder locker(propertyNames->vm());
     propertyNames->add(propertyName->identifier(propertyNames->vm()));
 }