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00020 #include "exception.h"
00021
00022 #include <KDebug>
00023 #include <QString>
00024
00025 #include <memory>
00026
00027 using namespace Akonadi;
00028
00029 class Exception::Private
00030 {
00031 public:
00032 QByteArray what;
00033 QByteArray assembledWhat;
00034 };
00035
00036 Exception::Exception(const char* what) throw() :
00037 d( 0 )
00038 {
00039 try {
00040 std::auto_ptr<Private> nd( new Private );
00041 nd->what = what;
00042 d = nd.release();
00043 } catch ( ... ) {}
00044 }
00045
00046 Exception::Exception(const QByteArray& what) throw() :
00047 d( 0 )
00048 {
00049 try {
00050 std::auto_ptr<Private> nd( new Private );
00051 nd->what = what;
00052 d = nd.release();
00053 } catch ( ... ) {}
00054 }
00055
00056 Exception::Exception(const QString& what) throw() :
00057 d( 0 )
00058 {
00059 try {
00060 std::auto_ptr<Private> nd( new Private );
00061 nd->what = what.toUtf8();
00062 d = nd.release();
00063 } catch ( ... ) {}
00064 }
00065
00066 Exception::Exception(const Akonadi::Exception& other) throw() :
00067 std::exception( other ), d( 0 )
00068 {
00069 if ( !other.d )
00070 return;
00071 try {
00072 std::auto_ptr<Private> nd( new Private( *other.d ) );
00073 d = nd.release();
00074 } catch ( ... ) {}
00075 }
00076
00077 Exception::~Exception() throw()
00078 {
00079 delete d;
00080 }
00081
00082 QByteArray Exception::type() const throw()
00083 {
00084 static const char mytype[] = "Akonadi::Exception";
00085 try {
00086 return QByteArray::fromRawData( "Akonadi::Exception", sizeof(mytype)-1 );
00087 } catch ( ... ) {
00088 return QByteArray();
00089 }
00090 }
00091
00092 const char* Exception::what() const throw()
00093 {
00094 static const char fallback[] = "<some exception was thrown during construction: message lost>";
00095 if ( !d )
00096 return fallback;
00097 if ( d->assembledWhat.isEmpty() )
00098 try {
00099 d->assembledWhat = QByteArray( type() + ": " + d->what );
00100 } catch ( ... ) {
00101 return "caught some exception while assembling Akonadi::Exception::what() return value";
00102 }
00103 return d->assembledWhat.constData();
00104 }
00105
00106 #define AKONADI_EXCEPTION_IMPLEMENT_TRIVIAL_INSTANCE( classname ) \
00107 Akonadi::classname::~classname() throw() {} \
00108 QByteArray Akonadi::classname::type() const throw() { \
00109 static const char mytype[] = "Akonadi::" #classname ; \
00110 try { \
00111 return QByteArray::fromRawData( mytype, sizeof(mytype)-1 ); \
00112 } catch ( ... ) { \
00113 return QByteArray(); \
00114 } \
00115 }
00116
00117 AKONADI_EXCEPTION_IMPLEMENT_TRIVIAL_INSTANCE( PayloadException )
00118
00119 #undef AKONADI_EXCEPTION_IMPLEMENT_TRIVIAL_INSTANCE