+ use dedicated exception classes for expression and parsing errors

src/Base/Exception.cpp

@@ -321,6 +321,40 @@ DivisionByZeroError::DivisionByZeroError(const DivisionByZeroError &inst)
 
 // ---------------------------------------------------------
 
+ExpressionError::ExpressionError(const char * sMessage)
+  : Exception(sMessage)
+{
+}
+
+ExpressionError::ExpressionError(const std::string& sMessage)
+  : Exception(sMessage)
+{
+}
+
+ExpressionError::ExpressionError(const ExpressionError &inst)
+ : Exception(inst)
+{
+}
+
+// ---------------------------------------------------------
+
+ParserError::ParserError(const char * sMessage)
+  : Exception(sMessage)
+{
+}
+
+ParserError::ParserError(const std::string& sMessage)
+  : Exception(sMessage)
+{
+}
+
+ParserError::ParserError(const ParserError &inst)
+ : Exception(inst)
+{
+}
+
+// ---------------------------------------------------------
+
 #if defined(__GNUC__) && defined (FC_OS_LINUX)
 #include <stdexcept>
 #include <iostream>

src/Base/Exception.h

@@ -286,6 +286,39 @@ public:
   virtual ~DivisionByZeroError() throw() {}
 };
 
+/**
+ * The ExpressionError can be used to indicate erroneous.input
+ * to the expression engine.
+ * @author Werner Mayer
+ */
+class BaseExport ExpressionError : public Exception
+{
+public:
+  /// Construction
+  ExpressionError(const char * sMessage);
+  ExpressionError(const std::string& sMessage);
+  /// Construction
+  ExpressionError(const ExpressionError &inst);
+  /// Destruction
+  virtual ~ExpressionError() throw() {}
+};
+
+/**
+ * The ParserError can be used to indicate the parsing error.
+ * @author Werner Mayer
+ */
+class BaseExport ParserError : public Exception
+{
+public:
+  /// Construction
+  ParserError(const char * sMessage);
+  ParserError(const std::string& sMessage);
+  /// Construction
+  ParserError(const ParserError &inst);
+  /// Destruction
+  virtual ~ParserError() throw() {}
+};
+
 
 inline void Exception::setMessage(const char * sMessage)
 {