Xerces-C++: XMLException.hpp Source File

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    00001 /*
    00002  * Copyright 1999-2000,2004 The Apache Software Foundation.
    00003  *
    00004  * Licensed under the Apache License, Version 2.0 (the "License");
    00005  * you may not use this file except in compliance with the License.
    00006  * You may obtain a copy of the License at
    00007  *
    00008  *      http://www.apache.org/licenses/LICENSE-2.0
    00009  *
    00010  * Unless required by applicable law or agreed to in writing, software
    00011  * distributed under the License is distributed on an "AS IS" BASIS,
    00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    00013  * See the License for the specific language governing permissions and
    00014  * limitations under the License.
    00015  */
    00016
    00017 /*
    00018  * $Id: XMLException.hpp 176026 2004-09-08 13:57:07Z peiyongz $
    00019  */
    00020
    00021 #if !defined(EXCEPTION_HPP)
    00022 #define EXCEPTION_HPP
    00023
    00024 #include <xercesc/util/XMemory.hpp>
    00025 #include <xercesc/util/XMLExceptMsgs.hpp>
    00026 #include <xercesc/util/XMLUni.hpp>
    00027 #include <xercesc/framework/XMLErrorReporter.hpp>
    00028
    00029 XERCES_CPP_NAMESPACE_BEGIN
    00030
    00031 // ---------------------------------------------------------------------------
    00032 //  This is the base class from which all the XML parser exceptions are
    00033 //  derived. The virtual interface is very simple and most of the functionality
    00034 //  is in this class.
    00035 //
    00036 //  Because all derivatives are EXACTLY the same except for the static
    00037 //  string that is used to hold the name of the class, a macro is provided
    00038 //  below via which they are all created.
    00039 // ---------------------------------------------------------------------------
    00040 class  XMLException : public XMemory
    00041 {
    00042 public:
    00043     // -----------------------------------------------------------------------
    00044     //  Virtual Destructor
    00045     // -----------------------------------------------------------------------
    00046     virtual ~XMLException();
    00047
    00048
    00049     // -----------------------------------------------------------------------
    00050     //  The XML exception virtual interface
    00051     // -----------------------------------------------------------------------
    00052     virtual const XMLCh* getType() const = 0;
    00053
    00054
    00055     // -----------------------------------------------------------------------
    00056     //  Getter methods
    00057     // -----------------------------------------------------------------------
    00058     XMLExcepts::Codes getCode() const;
    00059     const XMLCh* getMessage() const;
    00060     const char* getSrcFile() const;
    00061     unsigned int getSrcLine() const;
    00062     XMLErrorReporter::ErrTypes getErrorType() const;
    00063
    00064
    00065     // -----------------------------------------------------------------------
    00066     //  Setter methods
    00067     // -----------------------------------------------------------------------
    00068     void setPosition(const char* const file, const unsigned int line);
    00069
    00070
    00071     // -----------------------------------------------------------------------
    00072     //  Hidden constructors and operators
    00073     //
    00074     //  NOTE:   Technically, these should be protected, since this is a
    00075     //          base class that is never used directly. However, VC++ 6.0 will
    00076     //          fail to catch via a reference to base class if the ctors are
    00077     //          not public!! This seems to have been caused by the install
    00078     //          of IE 5.0.
    00079     // -----------------------------------------------------------------------
    00080     XMLException();
    00081     XMLException(const char* const srcFile, const unsigned int srcLine, MemoryManager* const memoryManager = 0);
    00082     XMLException(const XMLException& toCopy);
    00083     XMLException& operator=(const XMLException& toAssign);
    00084
    00085     // -----------------------------------------------------------------------
    00086     //  Notification that lazy data has been deleted
    00087     // -----------------------------------------------------------------------
    00088     static void reinitMsgMutex();
    00089
    00090     static void reinitMsgLoader();
    00091
    00092 protected :
    00093     // -----------------------------------------------------------------------
    00094     //  Protected methods
    00095     // -----------------------------------------------------------------------
    00096     void loadExceptText
    00097     (
    00098         const   XMLExcepts::Codes toLoad
    00099     );
    00100     void loadExceptText
    00101     (
    00102         const   XMLExcepts::Codes toLoad
    00103         , const XMLCh* const        text1
    00104         , const XMLCh* const        text2 = 0
    00105         , const XMLCh* const        text3 = 0
    00106         , const XMLCh* const        text4 = 0
    00107     );
    00108     void loadExceptText
    00109     (
    00110         const   XMLExcepts::Codes toLoad
    00111         , const char* const         text1
    00112         , const char* const         text2 = 0
    00113         , const char* const         text3 = 0
    00114         , const char* const         text4 = 0
    00115     );
    00116
    00117
    00118 private :
    00119     // -----------------------------------------------------------------------
    00120     //  Data members
    00121     //
    00122     //  fCode
    00123     //      The error code that this exception represents.
    00124     //
    00125     //  fSrcFile
    00126     //  fSrcLine
    00127     //      These are the file and line information from the source where the
    00128     //      exception was thrown from.
    00129     //
    00130     //  fMsg
    00131     //      The loaded message text for this exception.
    00132     // -----------------------------------------------------------------------
    00133     XMLExcepts::Codes       fCode;
    00134     char*                   fSrcFile;
    00135     unsigned int            fSrcLine;
    00136     XMLCh*                  fMsg;
    00137
    00138 protected:
    00139     MemoryManager*          fMemoryManager;
    00140 };
    00141
    00142 // ---------------------------------------------------------------------------
    00143 //  XMLException: Getter methods
    00144 // ---------------------------------------------------------------------------
    00145 inline XMLExcepts::Codes XMLException::getCode() const
    00146 {
    00147     return fCode;
    00148 }
    00149
    00150 inline const XMLCh* XMLException::getMessage() const
    00151 {
    00152     return fMsg;
    00153 }
    00154
    00155 inline const char* XMLException::getSrcFile() const
    00156 {
    00157     if (!fSrcFile)
    00158         return "";
    00159     return fSrcFile;
    00160 }
    00161
    00162 inline unsigned int XMLException::getSrcLine() const
    00163 {
    00164     return fSrcLine;
    00165 }
    00166
    00167 inline XMLErrorReporter::ErrTypes XMLException::getErrorType() const
    00168 {
    00169    if ((fCode >= XMLExcepts::W_LowBounds) && (fCode <= XMLExcepts::W_HighBounds))
    00170        return XMLErrorReporter::ErrType_Warning;
    00171    else if ((fCode >= XMLExcepts::F_LowBounds) && (fCode <= XMLExcepts::F_HighBounds))
    00172         return XMLErrorReporter::ErrType_Fatal;
    00173    else if ((fCode >= XMLExcepts::E_LowBounds) && (fCode <= XMLExcepts::E_HighBounds))
    00174         return XMLErrorReporter::ErrType_Error;
    00175    return XMLErrorReporter::ErrTypes_Unknown;
    00176 }
    00177
    00178 // ---------------------------------------------------------------------------
    00179 //  This macro is used to create derived classes. They are all identical
    00180 //  except the name of the exception, so it crazy to type them in over and
    00181 //  over.
    00182 // ---------------------------------------------------------------------------
    00183 #define MakeXMLException(theType, expKeyword) \
    00184 class expKeyword theType : public XMLException \
    00185 { \
    00186 public: \
    00187  \
    00188     theType(const   char* const         srcFile \
    00189             , const unsigned int        srcLine \
    00190             , const XMLExcepts::Codes toThrow \
    00191             , MemoryManager*            memoryManager = 0) : \
    00192         XMLException(srcFile, srcLine, memoryManager) \
    00193     { \
    00194         loadExceptText(toThrow); \
    00195     } \
    00196  \
    00197     theType(const theType& toCopy) : \
    00198  \
    00199         XMLException(toCopy) \
    00200     { \
    00201     } \
    00202   \
    00203     theType(const   char* const         srcFile \
    00204             , const unsigned int        srcLine \
    00205             , const XMLExcepts::Codes   toThrow \
    00206             , const XMLCh* const        text1 \
    00207             , const XMLCh* const        text2 = 0 \
    00208             , const XMLCh* const        text3 = 0 \
    00209             , const XMLCh* const        text4 = 0 \
    00210             , MemoryManager*            memoryManager = 0) : \
    00211         XMLException(srcFile, srcLine, memoryManager) \
    00212     { \
    00213         loadExceptText(toThrow, text1, text2, text3, text4); \
    00214     } \
    00215  \
    00216     theType(const   char* const         srcFile \
    00217             , const unsigned int        srcLine \
    00218             , const XMLExcepts::Codes   toThrow \
    00219             , const char* const         text1 \
    00220             , const char* const         text2 = 0 \
    00221             , const char* const         text3 = 0 \
    00222             , const char* const         text4 = 0 \
    00223             , MemoryManager*            memoryManager = 0) : \
    00224         XMLException(srcFile, srcLine, memoryManager) \
    00225     { \
    00226         loadExceptText(toThrow, text1, text2, text3, text4); \
    00227     } \
    00228  \
    00229     virtual ~theType() {} \
    00230  \
    00231     theType& operator=(const theType& toAssign) \
    00232     { \
    00233         XMLException::operator=(toAssign); \
    00234         return *this; \
    00235     } \
    00236  \
    00237     virtual XMLException* duplicate() const \
    00238     { \
    00239         return new (fMemoryManager) theType(*this); \
    00240     } \
    00241  \
    00242     virtual const XMLCh* getType() const \
    00243     { \
    00244         return XMLUni::fg##theType##_Name; \
    00245     } \
    00246  \
    00247 private : \
    00248     theType(); \
    00249 };
    00250
    00251
    00252
    00253 // ---------------------------------------------------------------------------
    00254 //  This macros is used to actually throw an exception. It is used in order
    00255 //  to make sure that source code line/col info is stored correctly, and to
    00256 //  give flexibility for other stuff in the future.
    00257 // ---------------------------------------------------------------------------
    00258
    00259 #define ThrowXML(type,code) throw type(__FILE__, __LINE__, code)
    00260
    00261 #define ThrowXML1(type,code,p1) throw type(__FILE__, __LINE__, code, p1)
    00262
    00263 #define ThrowXML2(type,code,p1,p2) throw type(__FILE__, __LINE__, code, p1, p2)
    00264
    00265 #define ThrowXML3(type,code,p1,p2,p3) throw type(__FILE__, __LINE__, code, p1, p2, p3)
    00266
    00267 #define ThrowXML4(type,code,p1,p2,p3,p4) throw type(__FILE__, __LINE__, code, p1, p2, p3, p4)
    00268
    00269 #define ThrowXMLwithMemMgr(type,code,memMgr) throw type(__FILE__, __LINE__, code, memMgr)
    00270
    00271 #define ThrowXMLwithMemMgr1(type,code,p1,memMgr) throw type(__FILE__, __LINE__, code, p1, 0, 0, 0, memMgr)
    00272
    00273 #define ThrowXMLwithMemMgr2(type,code,p1,p2,memMgr) throw type(__FILE__, __LINE__, code, p1, p2, 0, 0, memMgr)
    00274
    00275 #define ThrowXMLwithMemMgr3(type,code,p1,p2,p3,memMgr) throw type(__FILE__, __LINE__, code, p1, p2, p3, 0, memMgr)
    00276
    00277 #define ThrowXMLwithMemMgr4(type,code,p1,p2,p3,p4,memMgr) throw type(__FILE__, __LINE__, code, p1, p2, p3, p4, memMgr)
    00278
    00279 XERCES_CPP_NAMESPACE_END
    00280
    00281 #endif

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