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02.28.2008 at 05:54AM PST, ID: 23200197

	[x] Attachment Details

Serializable class hierarchy - Probably deeper than just the syntax error

Asked by josgood in C++ Programming Language

I'd like to build a serializable class hierarchy containing a map of class names to constructors.

In the attached sample, I'm getting error C2059: syntax error : ')' on line 34.

Two questions:
1) How can I fix my syntax error?
2) Can I somehow avoid the WithArg/WithOutArg macros?

Thank you.

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             #include <map>
#include <string>
#include <fstream>
#include <limits>
 
#define WithOutArg Shape* (* )(std::ifstream&)
#define WithArg(a) Shape* (*a)(std::ifstream&)
 
class Shape {
public:
   static void AddSerializableType(const std::string&, WithArg(a));
protected:
   Shape(std::ifstream&);
private:
   static std::map<std::string, WithOutArg> map;
};
 
std::map<std::string, WithOutArg> Shape::map;
void Shape::AddSerializableType(const std::string& name, WithArg(constructor)) {
   map.insert(make_pair(name,constructor));
}
 
class Circle : public Shape {
public:
   Circle(std::ifstream& str) : Shape(str) { 
      str.width(std::numeric_limits<double>::digits10);
      str >> m_radius;
   }
private:
   double m_radius;
};
 
int main() {
   Shape::AddSerializableType("Circle",Circle(std::ifstream&));
}

           
         

Keywords: Serializable class hierarchy - Probabl…

	Title
1	Serializable
2	AppDomain DoCallBack causes error …
3	"serializable"?
4	Serializable
5	serializable
6	serializable and transient

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Serializable class hierarchy - Probably deeper than just the syntax error

Asked by josgood in C++ Programming Language

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