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      1 /*
      2  *  Copyright (C) 1999-2000 Harri Porten (porten (at) 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 "JSGlobalObject.h"
     26 #include "JSString.h"
     27 
     28 namespace JSC {
     29 
     30 ASSERT_CLASS_FITS_IN_CELL(ErrorConstructor);
     31 
     32 ErrorConstructor::ErrorConstructor(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, ErrorPrototype* errorPrototype)
     33     : InternalFunction(&exec->globalData(), globalObject, structure, Identifier(exec, errorPrototype->classInfo()->className))
     34 {
     35     // ECMA 15.11.3.1 Error.prototype
     36     putDirectWithoutTransition(exec->globalData(), exec->propertyNames().prototype, errorPrototype, DontEnum | DontDelete | ReadOnly);
     37     putDirectWithoutTransition(exec->globalData(), exec->propertyNames().length, jsNumber(1), DontDelete | ReadOnly | DontEnum);
     38 }
     39 
     40 // ECMA 15.9.3
     41 
     42 static EncodedJSValue JSC_HOST_CALL constructWithErrorConstructor(ExecState* exec)
     43 {
     44     JSValue message = exec->argumentCount() ? exec->argument(0) : jsUndefined();
     45     Structure* errorStructure = asInternalFunction(exec->callee())->globalObject()->errorStructure();
     46     return JSValue::encode(ErrorInstance::create(exec, errorStructure, message));
     47 }
     48 
     49 ConstructType ErrorConstructor::getConstructData(ConstructData& constructData)
     50 {
     51     constructData.native.function = constructWithErrorConstructor;
     52     return ConstructTypeHost;
     53 }
     54 
     55 static EncodedJSValue JSC_HOST_CALL callErrorConstructor(ExecState* exec)
     56 {
     57     JSValue message = exec->argumentCount() ? exec->argument(0) : jsUndefined();
     58     Structure* errorStructure = asInternalFunction(exec->callee())->globalObject()->errorStructure();
     59     return JSValue::encode(ErrorInstance::create(exec, errorStructure, message));
     60 }
     61 
     62 CallType ErrorConstructor::getCallData(CallData& callData)
     63 {
     64     callData.native.function = callErrorConstructor;
     65     return CallTypeHost;
     66 }
     67 
     68 } // namespace JSC
     69