SimpleProgram.h

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#ifndef ELEMENTSKERNEL_ELEMENTSKERNEL_SIMPLEPROGRAM_H_
#define ELEMENTSKERNEL_ELEMENTSKERNEL_SIMPLEPROGRAM_H_
 
#include "ElementsKernel/Export.h"
#include "ElementsKernel/Main.h"
#include "ElementsKernel/Path.h"
 
namespace Elements {
 
// Forward declaration. We don't need the definition right now.
enum class ExitCode;
 
class ELEMENTS_API SimpleProgram {
 
public:
  ELEMENTS_API ExitCode run(int argc, char** argv) noexcept;
  ELEMENTS_API const Path::Item& getProgramPath() const;
  ELEMENTS_API const Path::Item& getProgramName() const;
 
protected:
  SimpleProgram() = default;
  virtual ~SimpleProgram();
 
  virtual ExitCode main()          = 0;
  virtual void     defineOptions() = 0;
 
private:
  void setup(int argc, char** argv);
 
private:
  Path::Item m_program_name;
  Path::Item m_program_path;
};
 
}  // namespace Elements
 
#define MAIN(ELEMENTS_PROGRAM)                                                                                         \
  ELEMENTS_API int main(int argc, char* argv[]) {                                                                      \
    auto               program   = ELEMENTS_PROGRAM();                                                                 \
    Elements::ExitCode exit_code = program.run(argc, argv);                                                            \
    return static_cast<Elements::ExitCodeType>(exit_code);                                                             \
  }
 
#endif  // ELEMENTSKERNEL_ELEMENTSKERNEL_SIMPLEPROGRAM_H_