runtime/ErrorConstructor.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 "ErrorConstructor.h"
  23
  24 #include "ErrorPrototype.h"
  25 #include "Interpreter.h"
  26 #include "JSGlobalObject.h"
  27 #include "JSString.h"
  28 #include "JSCInlines.h"
  29
  30 namespace JSC {
  31
  32 STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ErrorConstructor);
  33
  34 const ClassInfo ErrorConstructor::s_info = { "Function", &Base::s_info, 0, CREATE_METHOD_TABLE(ErrorConstructor) };
  35
  36 ErrorConstructor::ErrorConstructor(VM& vm, Structure* structure)
  37     : InternalFunction(vm, structure)
  38 {
  39 }
  40
  41 void ErrorConstructor::finishCreation(VM& vm, ErrorPrototype* errorPrototype)
  42 {
  43     Base::finishCreation(vm, errorPrototype->classInfo()->className);
  44     // ECMA 15.11.3.1 Error.prototype
  45     putDirectWithoutTransition(vm, vm.propertyNames->prototype, errorPrototype, DontEnum | DontDelete | ReadOnly);
  46     putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), DontDelete | ReadOnly | DontEnum);
  47 }
  48
  49 // ECMA 15.9.3
  50
  51 EncodedJSValue JSC_HOST_CALL Interpreter::constructWithErrorConstructor(ExecState* exec)
  52 {
  53     JSValue message = exec->argumentCount() ? exec->argument(0) : jsUndefined();
  54     Structure* errorStructure = asInternalFunction(exec->callee())->globalObject()->errorStructure();
  55     return JSValue::encode(ErrorInstance::create(exec, errorStructure, message, nullptr, TypeNothing, false));
  56 }
  57
  58 ConstructType ErrorConstructor::getConstructData(JSCell*, ConstructData& constructData)
  59 {
  60     constructData.native.function = Interpreter::constructWithErrorConstructor;
  61     return ConstructTypeHost;
  62 }
  63
  64 EncodedJSValue JSC_HOST_CALL Interpreter::callErrorConstructor(ExecState* exec)
  65 {
  66     JSValue message = exec->argumentCount() ? exec->argument(0) : jsUndefined();
  67     Structure* errorStructure = asInternalFunction(exec->callee())->globalObject()->errorStructure();
  68     return JSValue::encode(ErrorInstance::create(exec, errorStructure, message, nullptr, TypeNothing, false));
  69 }
  70
  71 CallType ErrorConstructor::getCallData(JSCell*, CallData& callData)
  72 {
  73     callData.native.function = Interpreter::callErrorConstructor;
  74     return CallTypeHost;
  75 }
  76
  77 } // namespace JSC