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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, NonNullPassRefPtr<Structure> structure, ErrorPrototype* errorPrototype)
     33     : InternalFunction(&exec->globalData(), structure, Identifier(exec, errorPrototype->classInfo()->className))
     34 {
     35     // ECMA 15.11.3.1 Error.prototype
     36     putDirectWithoutTransition(exec->propertyNames().prototype, errorPrototype, DontEnum | DontDelete | ReadOnly);
     37     putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), DontDelete | ReadOnly | DontEnum);
     38 }
     39 
     40 // ECMA 15.9.3
     41 ErrorInstance* constructError(ExecState* exec, const ArgList& args)
     42 {
     43     ErrorInstance* obj = new (exec) ErrorInstance(exec->lexicalGlobalObject()->errorStructure());
     44     if (!args.at(0).isUndefined())
     45         obj->putDirect(exec->propertyNames().message, jsString(exec, args.at(0).toString(exec)));
     46     return obj;
     47 }
     48 
     49 static JSObject* constructWithErrorConstructor(ExecState* exec, JSObject*, const ArgList& args)
     50 {
     51     return constructError(exec, args);
     52 }
     53 
     54 ConstructType ErrorConstructor::getConstructData(ConstructData& constructData)
     55 {
     56     constructData.native.function = constructWithErrorConstructor;
     57     return ConstructTypeHost;
     58 }
     59 
     60 // ECMA 15.9.2
     61 static JSValue JSC_HOST_CALL callErrorConstructor(ExecState* exec, JSObject*, JSValue, const ArgList& args)
     62 {
     63     // "Error()" gives the sames result as "new Error()"
     64     return constructError(exec, args);
     65 }
     66 
     67 CallType ErrorConstructor::getCallData(CallData& callData)
     68 {
     69     callData.native.function = callErrorConstructor;
     70     return CallTypeHost;
     71 }
     72 
     73 } // namespace JSC
     74