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 "ErrorPrototype.h"

    23 

    24 #include "JSFunction.h"

    25 #include "JSString.h"

    26 #include "ObjectPrototype.h"

    27 #include "PrototypeFunction.h"

    28 #include "UString.h"

    29 

    30 namespace JSC {

    31 

    32 ASSERT_CLASS_FITS_IN_CELL(ErrorPrototype);

    33 

    34 static JSValue JSC_HOST_CALL errorProtoFuncToString(ExecState*, JSObject*, JSValue, const ArgList&);

    35 

    36 // ECMA 15.9.4

    37 ErrorPrototype::ErrorPrototype(ExecState* exec, NonNullPassRefPtr<Structure> structure, Structure* prototypeFunctionStructure)

    38     : ErrorInstance(structure)

    39 {

    40     // The constructor will be added later in ErrorConstructor's constructor

    41 

    42     putDirectWithoutTransition(exec->propertyNames().name, jsNontrivialString(exec, "Error"), DontEnum);

    43     putDirectWithoutTransition(exec->propertyNames().message, jsNontrivialString(exec, "Unknown error"), DontEnum);

    44 

    45     putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, prototypeFunctionStructure, 0, exec->propertyNames().toString, errorProtoFuncToString), DontEnum);

    46 }

    47 

    48 JSValue JSC_HOST_CALL errorProtoFuncToString(ExecState* exec, JSObject*, JSValue thisValue, const ArgList&)

    49 {

    50     JSObject* thisObj = thisValue.toThisObject(exec);

    51 

    52     UString s = "Error";

    53 

    54     JSValue v = thisObj->get(exec, exec->propertyNames().name);

    55     if (!v.isUndefined())

    56         s = v.toString(exec);

    57 

    58     v = thisObj->get(exec, exec->propertyNames().message);

    59     if (!v.isUndefined()) {

    60         // Mozilla-compatible format.

    61         s += ": ";

    62         s += v.toString(exec);

    63     }

    64 

    65     return jsNontrivialString(exec, s);

    66 }

    67 

    68 } // namespace JSC