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 "JSStringBuilder.h"
27 #include "ObjectPrototype.h"
28 #include "StringRecursionChecker.h"
29 #include "UString.h"
30
31 namespace JSC {
32
33 ASSERT_CLASS_FITS_IN_CELL(ErrorPrototype);
34
35 static EncodedJSValue JSC_HOST_CALL errorProtoFuncToString(ExecState*);
36
37 // ECMA 15.9.4
ErrorPrototype(ExecState * exec,JSGlobalObject * globalObject,Structure * structure,Structure * functionStructure)38 ErrorPrototype::ErrorPrototype(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, Structure* functionStructure)
39 : ErrorInstance(&exec->globalData(), structure)
40 {
41 // The constructor will be added later in ErrorConstructor's constructor
42
43 putDirectWithoutTransition(exec->globalData(), exec->propertyNames().name, jsNontrivialString(exec, "Error"), DontEnum);
44 putDirectFunctionWithoutTransition(exec, new (exec) JSFunction(exec, globalObject, functionStructure, 0, exec->propertyNames().toString, errorProtoFuncToString), DontEnum);
45 }
46
errorProtoFuncToString(ExecState * exec)47 EncodedJSValue JSC_HOST_CALL errorProtoFuncToString(ExecState* exec)
48 {
49 JSObject* thisObj = exec->hostThisValue().toThisObject(exec);
50
51 StringRecursionChecker checker(exec, thisObj);
52 if (EncodedJSValue earlyReturnValue = checker.earlyReturnValue())
53 return earlyReturnValue;
54
55 JSValue name = thisObj->get(exec, exec->propertyNames().name);
56 JSValue message = thisObj->get(exec, exec->propertyNames().message);
57
58 // Mozilla-compatible format.
59
60 if (!name.isUndefined()) {
61 if (!message.isUndefined())
62 return JSValue::encode(jsMakeNontrivialString(exec, name.toString(exec), ": ", message.toString(exec)));
63 return JSValue::encode(jsNontrivialString(exec, name.toString(exec)));
64 }
65 if (!message.isUndefined())
66 return JSValue::encode(jsMakeNontrivialString(exec, "Error: ", message.toString(exec)));
67 return JSValue::encode(jsNontrivialString(exec, "Error"));
68 }
69
70 } // namespace JSC
71