swig/Lib/d/director.swg
William S Fulton 07ab80b49e Add raise methods for throwing c++ exceptions in C#, Java, D
The director c++ exceptions are thrown in a helper method instead of in
the director overloaded method. This circumvents compiler warnings about
throwing exceptions when the method has an exception specification or
noexcept. If the exception is thrown, abort will still be called!
In Java, the "director:noexcept" typemap can be used to do something
else. This typemap should be ported to the other languages too.
2017-05-13 17:01:15 +01:00

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/* -----------------------------------------------------------------------------
* director.swg
*
* This file contains support for director classes so that D proxy
* methods can be called from C++.
* ----------------------------------------------------------------------------- */
#if defined(DEBUG_DIRECTOR_OWNED)
#include <iostream>
#endif
#include <string>
#include <exception>
namespace Swig {
// Director base class not used in D directors.
class Director {
};
// Base class for director exceptions.
class DirectorException : public std::exception {
protected:
std::string swig_msg;
public:
DirectorException(const std::string &msg) : swig_msg(msg) {
}
virtual ~DirectorException() throw() {
}
const char *what() const throw() {
return swig_msg.c_str();
}
};
// Exception which is thrown when attempting to call a pure virtual method
// from D code through the director layer.
class DirectorPureVirtualException : public DirectorException {
public:
DirectorPureVirtualException(const char *msg) : DirectorException(std::string("Attempted to invoke pure virtual method ") + msg) {
}
static void raise(const char *msg) {
throw DirectorPureVirtualException(msg);
}
};
}