runtime/NativeErrorConstructor.cpp

   1 /*
   2  *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2003, 2008 Apple Inc. All rights reserved.
   4  *
   5  *  This library is free software; you can redistribute it and/or
   6  *  modify it under the terms of the GNU Lesser General Public
   7  *  License as published by the Free Software Foundation; either
   8  *  version 2 of the License, or (at your option) any later version.
   9  *
  10  *  This library is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  *  Lesser General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU Lesser General Public
  16  *  License along with this library; if not, write to the Free Software
  17  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18  *
  19  */
  20
  21 #include "config.h"
  22 #include "NativeErrorConstructor.h"
  23
  24 #include "ErrorInstance.h"
  25 #include "JSFunction.h"
  26 #include "JSString.h"
  27 #include "NativeErrorPrototype.h"
  28 #include "Operations.h"
  29
  30 namespace JSC {
  31
  32 ASSERT_HAS_TRIVIAL_DESTRUCTOR(NativeErrorConstructor);
  33
  34 const ClassInfo NativeErrorConstructor::s_info = { "Function", &InternalFunction::s_info, 0, 0, CREATE_METHOD_TABLE(NativeErrorConstructor) };
  35
  36 NativeErrorConstructor::NativeErrorConstructor(JSGlobalObject* globalObject, Structure* structure)
  37     : InternalFunction(globalObject, structure)
  38 {
  39 }
  40
  41 void NativeErrorConstructor::visitChildren(JSCell* cell, SlotVisitor& visitor)
  42 {
  43     NativeErrorConstructor* thisObject = jsCast<NativeErrorConstructor*>(cell);
  44     ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
  45     COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
  46     ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
  47
  48     InternalFunction::visitChildren(thisObject, visitor);
  49     visitor.append(&thisObject->m_errorStructure);
  50 }
  51
  52 static EncodedJSValue JSC_HOST_CALL constructWithNativeErrorConstructor(ExecState* exec)
  53 {
  54     JSValue message = exec->argumentCount() ? exec->argument(0) : jsUndefined();
  55     Structure* errorStructure = static_cast<NativeErrorConstructor*>(exec->callee())->errorStructure();
  56     ASSERT(errorStructure);
  57     return JSValue::encode(ErrorInstance::create(exec, errorStructure, message));
  58 }
  59
  60 ConstructType NativeErrorConstructor::getConstructData(JSCell*, ConstructData& constructData)
  61 {
  62     constructData.native.function = constructWithNativeErrorConstructor;
  63     return ConstructTypeHost;
  64 }
  65
  66 static EncodedJSValue JSC_HOST_CALL callNativeErrorConstructor(ExecState* exec)
  67 {
  68     JSValue message = exec->argumentCount() ? exec->argument(0) : jsUndefined();
  69     Structure* errorStructure = static_cast<NativeErrorConstructor*>(exec->callee())->errorStructure();
  70     return JSValue::encode(ErrorInstance::create(exec, errorStructure, message));
  71 }
  72
  73 CallType NativeErrorConstructor::getCallData(JSCell*, CallData& callData)
  74 {
  75     callData.native.function = callNativeErrorConstructor;
  76     return CallTypeHost;
  77 }
  78
  79 } // namespace JSC