exceptions.hpp

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#pragma once
 
#include "string.hpp"
#include <stdarg.h>
#include <stdexcept>
#include <stdio.h>
 
namespace jaffarCommon
{
 
namespace exceptions
{
 
#define JAFFAR_THROW_RUNTIME(...) jaffarCommon::exceptions::throwException("Runtime", __FILE__, __LINE__, __VA_ARGS__)
 
#define JAFFAR_THROW_LOGIC(...) jaffarCommon::exceptions::throwException("Logic", __FILE__, __LINE__, __VA_ARGS__)
 
__JAFFAR_COMMON__INLINE__ void throwException [[noreturn]] (const char* exceptionType, const char* fileName, const int lineNumber, const char* format, ...)
{
  char*   outstr = 0;
  va_list ap;
  va_start(ap, format);
  int ret = vsnprintf(nullptr, 0, format, ap);
  va_end(ap);
  if (ret < 0) throw std::invalid_argument("Failed processing exception reason");
 
  outstr = (char*)malloc(ret + 1);
  if (outstr == nullptr) throw std::invalid_argument("Failed processing exception reason");
 
  va_start(ap, format);
  ret = vsnprintf(outstr, ret + 1, format, ap);
  va_end(ap);
  if (ret < 0)
  {
    free(outstr);
    throw std::invalid_argument("Failed processing exception reason");
  }
 
  std::string outString = outstr;
  free(outstr);
 
  char info[1024];
 
  snprintf(info, sizeof(info) - 1, " + From %s:%d\n", fileName, lineNumber);
  outString += info;
 
  if (std::string(exceptionType) == "Logic") throw std::logic_error(outString.c_str());
  if (std::string(exceptionType) == "Runtime") throw std::runtime_error(outString.c_str());
  throw std::invalid_argument("Wrong exception type provided: " + std::string(exceptionType) + std::string(" Original error: ") + outString);
}
 
} // namespace exceptions
 
} // namespace jaffarCommon