runtime/Error.cpp

   1 /*
   2  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
   4  *  Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
   5  *  Copyright (C) 2007 Eric Seidel (eric@webkit.org)
   6  *
   7  *  This library is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU Library General Public
   9  *  License as published by the Free Software Foundation; either
  10  *  version 2 of the License, or (at your option) any later version.
  11  *
  12  *  This library is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  *  Library General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU Library General Public License
  18  *  along with this library; see the file COPYING.LIB.  If not, write to
  19  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  *  Boston, MA 02110-1301, USA.
  21  *
  22  */
  23
  24 #include "config.h"
  25 #include "Error.h"
  26
  27 #include "ConstructData.h"
  28 #include "ErrorConstructor.h"
  29 #include "JSFunction.h"
  30 #include "JSGlobalObject.h"
  31 #include "JSObject.h"
  32 #include "JSString.h"
  33 #include "NativeErrorConstructor.h"
  34 #include "SourceCode.h"
  35
  36 namespace JSC {
  37
  38 static const char* linePropertyName = "line";
  39 static const char* sourceIdPropertyName = "sourceId";
  40 static const char* sourceURLPropertyName = "sourceURL";
  41
  42 JSObject* createError(JSGlobalObject* globalObject, const UString& message)
  43 {
  44     ASSERT(!message.isEmpty());
  45     return ErrorInstance::create(&globalObject->globalData(), globalObject->errorStructure(), message);
  46 }
  47
  48 JSObject* createEvalError(JSGlobalObject* globalObject, const UString& message)
  49 {
  50     ASSERT(!message.isEmpty());
  51     return ErrorInstance::create(&globalObject->globalData(), globalObject->evalErrorConstructor()->errorStructure(), message);
  52 }
  53
  54 JSObject* createRangeError(JSGlobalObject* globalObject, const UString& message)
  55 {
  56     ASSERT(!message.isEmpty());
  57     return ErrorInstance::create(&globalObject->globalData(), globalObject->rangeErrorConstructor()->errorStructure(), message);
  58 }
  59
  60 JSObject* createReferenceError(JSGlobalObject* globalObject, const UString& message)
  61 {
  62     ASSERT(!message.isEmpty());
  63     return ErrorInstance::create(&globalObject->globalData(), globalObject->referenceErrorConstructor()->errorStructure(), message);
  64 }
  65
  66 JSObject* createSyntaxError(JSGlobalObject* globalObject, const UString& message)
  67 {
  68     ASSERT(!message.isEmpty());
  69     return ErrorInstance::create(&globalObject->globalData(), globalObject->syntaxErrorConstructor()->errorStructure(), message);
  70 }
  71
  72 JSObject* createTypeError(JSGlobalObject* globalObject, const UString& message)
  73 {
  74     ASSERT(!message.isEmpty());
  75     return ErrorInstance::create(&globalObject->globalData(), globalObject->typeErrorConstructor()->errorStructure(), message);
  76 }
  77
  78 JSObject* createURIError(JSGlobalObject* globalObject, const UString& message)
  79 {
  80     ASSERT(!message.isEmpty());
  81     return ErrorInstance::create(&globalObject->globalData(), globalObject->URIErrorConstructor()->errorStructure(), message);
  82 }
  83
  84 JSObject* createError(ExecState* exec, const UString& message)
  85 {
  86     return createError(exec->lexicalGlobalObject(), message);
  87 }
  88
  89 JSObject* createEvalError(ExecState* exec, const UString& message)
  90 {
  91     return createEvalError(exec->lexicalGlobalObject(), message);
  92 }
  93
  94 JSObject* createRangeError(ExecState* exec, const UString& message)
  95 {
  96     return createRangeError(exec->lexicalGlobalObject(), message);
  97 }
  98
  99 JSObject* createReferenceError(ExecState* exec, const UString& message)
 100 {
 101     return createReferenceError(exec->lexicalGlobalObject(), message);
 102 }
 103
 104 JSObject* createSyntaxError(ExecState* exec, const UString& message)
 105 {
 106     return createSyntaxError(exec->lexicalGlobalObject(), message);
 107 }
 108
 109 JSObject* createTypeError(ExecState* exec, const UString& message)
 110 {
 111     return createTypeError(exec->lexicalGlobalObject(), message);
 112 }
 113
 114 JSObject* createURIError(ExecState* exec, const UString& message)
 115 {
 116     return createURIError(exec->lexicalGlobalObject(), message);
 117 }
 118
 119 JSObject* addErrorInfo(JSGlobalData* globalData, JSObject* error, int line, const SourceCode& source)
 120 {
 121     intptr_t sourceID = source.provider()->asID();
 122     const UString& sourceURL = source.provider()->url();
 123
 124     if (line != -1)
 125         error->putWithAttributes(globalData, Identifier(globalData, linePropertyName), jsNumber(line), ReadOnly | DontDelete);
 126     if (sourceID != -1)
 127         error->putWithAttributes(globalData, Identifier(globalData, sourceIdPropertyName), jsNumber((double)sourceID), ReadOnly | DontDelete);
 128     if (!sourceURL.isNull())
 129         error->putWithAttributes(globalData, Identifier(globalData, sourceURLPropertyName), jsString(globalData, sourceURL), ReadOnly | DontDelete);
 130
 131     return error;
 132 }
 133
 134 JSObject* addErrorInfo(ExecState* exec, JSObject* error, int line, const SourceCode& source)
 135 {
 136     return addErrorInfo(&exec->globalData(), error, line, source);
 137 }
 138
 139 bool hasErrorInfo(ExecState* exec, JSObject* error)
 140 {
 141     return error->hasProperty(exec, Identifier(exec, linePropertyName))
 142         || error->hasProperty(exec, Identifier(exec, sourceIdPropertyName))
 143         || error->hasProperty(exec, Identifier(exec, sourceURLPropertyName));
 144 }
 145
 146 JSValue throwError(ExecState* exec, JSValue error)
 147 {
 148     exec->globalData().exception = error;
 149     return error;
 150 }
 151
 152 JSObject* throwError(ExecState* exec, JSObject* error)
 153 {
 154     exec->globalData().exception = error;
 155     return error;
 156 }
 157
 158 JSObject* throwTypeError(ExecState* exec)
 159 {
 160     return throwError(exec, createTypeError(exec, "Type error"));
 161 }
 162
 163 JSObject* throwSyntaxError(ExecState* exec)
 164 {
 165     return throwError(exec, createSyntaxError(exec, "Syntax error"));
 166 }
 167
 168 class StrictModeTypeErrorFunction : public InternalFunction {
 169 public:
 170     StrictModeTypeErrorFunction(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, const UString& message)
 171         : InternalFunction(&exec->globalData(), globalObject, structure, exec->globalData().propertyNames->emptyIdentifier)
 172         , m_message(message)
 173     {
 174     }
 175
 176     static EncodedJSValue JSC_HOST_CALL constructThrowTypeError(ExecState* exec)
 177     {
 178         throwTypeError(exec, static_cast<StrictModeTypeErrorFunction*>(exec->callee())->m_message);
 179         return JSValue::encode(jsNull());
 180     }
 181
 182     ConstructType getConstructData(ConstructData& constructData)
 183     {
 184         constructData.native.function = constructThrowTypeError;
 185         return ConstructTypeHost;
 186     }
 187
 188     static EncodedJSValue JSC_HOST_CALL callThrowTypeError(ExecState* exec)
 189     {
 190         throwTypeError(exec, static_cast<StrictModeTypeErrorFunction*>(exec->callee())->m_message);
 191         return JSValue::encode(jsNull());
 192     }
 193
 194     CallType getCallData(CallData& callData)
 195     {
 196         callData.native.function = callThrowTypeError;
 197         return CallTypeHost;
 198     }
 199
 200 private:
 201     UString m_message;
 202 };
 203
 204 ASSERT_CLASS_FITS_IN_CELL(StrictModeTypeErrorFunction);
 205
 206 JSValue createTypeErrorFunction(ExecState* exec, const UString& message)
 207 {
 208     return new (exec) StrictModeTypeErrorFunction(exec, exec->lexicalGlobalObject(), exec->lexicalGlobalObject()->internalFunctionStructure(), message);
 209 }
 210
 211 } // namespace JSC