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core/test/dyn_cast/cxx_main.cpp
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00004 //                    Teuchos: Common Tools Package
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00041 
00042 #include "Teuchos_dyn_cast.hpp"
00043 #include "Teuchos_CommandLineProcessor.hpp"
00044 #include "Teuchos_GlobalMPISession.hpp"
00045 #include "Teuchos_Version.hpp"
00046 
00047 class A { public: virtual ~A(){} };
00048 class B : public A { public: void f(bool verbose) { if(verbose) std::cout << "\nB::f() called!\n"; } };
00049 class C : public A {};
00050 
00051 int main( int argc, char* argv[] )
00052 {
00053 
00054   using Teuchos::CommandLineProcessor;
00055 
00056   bool verbose = true;
00057   
00058   Teuchos::GlobalMPISession mpiSession(&argc, &argv);
00059 
00060   try {
00061 
00062     // Read options from the commandline
00063     CommandLineProcessor  clp(false); // Don't throw exceptions
00064     clp.setOption( "verbose", "quiet", &verbose, "Set if output is printed or not." );
00065     CommandLineProcessor::EParseCommandLineReturn parse_return = clp.parse(argc,argv);
00066     if( parse_return != CommandLineProcessor::PARSE_SUCCESSFUL ) return parse_return;
00067 
00068     if(verbose) std::cout << Teuchos::Teuchos_Version() << std::endl << std::endl;
00069 
00070     if(verbose) std::cout
00071       << "\n*******************************************"
00072       << "\n*** Basic test of Teuchos::dyn_cast<>() ***"
00073       << "\n*******************************************\n";
00074     B b;
00075     A &a = b;
00076     try {
00077       if(verbose) std::cout << "\nTrying: dynamic_cast<C&>(a); [Should throw a std::bad_cast std::exception with very bad error message]\n";
00078       dynamic_cast<C&>(a);
00079     }
00080     catch( const std::bad_cast &e ) {
00081       if(verbose) std::cout << "\nCaught std::bad_cast std::exception e where e.what() = \"" << e.what() << "\"\n";
00082     }
00083     try {
00084       if(verbose) std::cout << "\nTrying: Teuchos::dyn_cast<C>(a); [Should throw a std::bad_cast std::exception with a very good error message]\n";
00085       Teuchos::dyn_cast<C>(a);
00086     }
00087     catch( const std::bad_cast &e ) {
00088       if(verbose) std::cout << "\nCaught std::bad_cast std::exception e where e.what() = \"" << e.what() << "\"\n";
00089     }
00090     if(verbose) std::cout << "\nTrying:  Teuchos::dyn_cast<B>(a).f(); [Should succeed and print \"B::f() called\"]\n";
00091     Teuchos::dyn_cast<B>(a).f(verbose);
00092     if(verbose) std::cout << "\nAll tests check out!\n";
00093   }
00094   catch( const std::exception &excpt ) {
00095     if(verbose)
00096       std::cerr << "*** Caught standard std::exception : " << excpt.what() << std::endl;
00097     return 1;
00098   }
00099   catch( ... ) {
00100     if(verbose)
00101       std::cerr << "*** Caught an unknown std::exception\n";
00102     return 1;
00103   }
00104   return 0;
00105 }
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