adding back files to be reviewed

include/openmc/error.h

@@ -0,0 +1,71 @@
+#ifndef OPENMC_ERROR_H
+#define OPENMC_ERROR_H
+
+#include <cstring>
+#include <string>
+#include <sstream>
+
+#include "openmc/capi.h"
+
+#ifdef __GNUC__
+#define UNREACHABLE() __builtin_unreachable()
+#else
+#define UNREACHABLE() (void)0
+#endif
+
+namespace openmc {
+
+inline void
+set_errmsg(const char* message)
+{
+  std::strcpy(openmc_err_msg, message);
+}
+
+inline void
+set_errmsg(const std::string& message)
+{
+  std::strcpy(openmc_err_msg, message.c_str());
+}
+
+inline void
+set_errmsg(const std::stringstream& message)
+{
+  std::strcpy(openmc_err_msg, message.str().c_str());
+}
+
+[[noreturn]] void fatal_error(const std::string& message, int err=-1);
+
+[[noreturn]] inline
+void fatal_error(const std::stringstream& message)
+{
+  fatal_error(message.str());
+}
+
+[[noreturn]] inline
+void fatal_error(const char* message)
+{
+  fatal_error(std::string{message, std::strlen(message)});
+}
+
+void warning(const std::string& message);
+
+inline
+void warning(const std::stringstream& message)
+{
+  warning(message.str());
+}
+
+void write_message(const std::string& message, int level=0);
+
+inline
+void write_message(const std::stringstream& message, int level)
+{
+  write_message(message.str(), level);
+}
+
+#ifdef OPENMC_MPI
+extern "C" void abort_mpi(int code);
+#endif
+
+} // namespace openmc
+#endif // OPENMC_ERROR_H