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 "JSCInlines.h"
  29
  30 namespace JSC {
  31
  32 STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(NativeErrorConstructor);
  33
  34 const ClassInfo NativeErrorConstructor::s_info = { "Function", &InternalFunction::s_info, 0, 0, CREATE_METHOD_TABLE(NativeErrorConstructor) };
  35
  36 NativeErrorConstructor::NativeErrorConstructor(VM& vm, Structure* structure)
  37     : InternalFunction(vm, structure)
  38 {
  39 }
  40
  41 void NativeErrorConstructor::finishCreation(VM& vm, JSGlobalObject* globalObject, Structure* prototypeStructure, const String& name)
  42 {
  43     Base::finishCreation(vm, name);
  44     ASSERT(inherits(info()));
  45
  46     NativeErrorPrototype* prototype = NativeErrorPrototype::create(vm, globalObject, prototypeStructure, name, this);
  47
  48     putDirect(vm, vm.propertyNames->length, jsNumber(1), DontDelete | ReadOnly | DontEnum); // ECMA 15.11.7.5
  49     putDirect(vm, vm.propertyNames->prototype, prototype, DontDelete | ReadOnly | DontEnum);
  50     m_errorStructure.set(vm, this, ErrorInstance::createStructure(vm, globalObject, prototype));
  51     ASSERT(m_errorStructure);
  52     ASSERT(m_errorStructure->isObject());
  53 }
  54
  55 void NativeErrorConstructor::visitChildren(JSCell* cell, SlotVisitor& visitor)
  56 {
  57     NativeErrorConstructor* thisObject = jsCast<NativeErrorConstructor*>(cell);
  58     ASSERT_GC_OBJECT_INHERITS(thisObject, info());
  59     COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
  60     ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
  61
  62     InternalFunction::visitChildren(thisObject, visitor);
  63     visitor.append(&thisObject->m_errorStructure);
  64 }
  65
  66 EncodedJSValue JSC_HOST_CALL Interpreter::constructWithNativeErrorConstructor(ExecState* exec)
  67 {
  68     JSValue message = exec->argument(0);
  69     Structure* errorStructure = static_cast<NativeErrorConstructor*>(exec->callee())->errorStructure();
  70     ASSERT(errorStructure);
  71     Vector<StackFrame> stackTrace;
  72     exec->vm().interpreter->getStackTrace(stackTrace, std::numeric_limits<size_t>::max());
  73     stackTrace.remove(0);
  74     return JSValue::encode(ErrorInstance::create(exec, errorStructure, message, stackTrace));
  75 }
  76
  77 ConstructType NativeErrorConstructor::getConstructData(JSCell*, ConstructData& constructData)
  78 {
  79     constructData.native.function = Interpreter::constructWithNativeErrorConstructor;
  80     return ConstructTypeHost;
  81 }
  82
  83 EncodedJSValue JSC_HOST_CALL Interpreter::callNativeErrorConstructor(ExecState* exec)
  84 {
  85     JSValue message = exec->argument(0);
  86     Structure* errorStructure = static_cast<NativeErrorConstructor*>(exec->callee())->errorStructure();
  87     Vector<StackFrame> stackTrace;
  88     exec->vm().interpreter->getStackTrace(stackTrace, std::numeric_limits<size_t>::max());
  89     stackTrace.remove(0);
  90     return JSValue::encode(ErrorInstance::create(exec, errorStructure, message, stackTrace));
  91 }
  92
  93 CallType NativeErrorConstructor::getCallData(JSCell*, CallData& callData)
  94 {
  95     callData.native.function = Interpreter::callNativeErrorConstructor;
  96     return CallTypeHost;
  97 }
  98
  99 } // namespace JSC