HResultException.h

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#pragma once
 
#ifdef _WIN32
#include <stdexcept>
#include <string>
#include <cstdio>
#include <windows.h>
 
namespace Ship {
 
class HResultException : public std::runtime_error {
  public:
    explicit HResultException(HRESULT hr) : std::runtime_error(FormatHResultMessage(hr)), mHResult(hr) {
    }
 
    HResultException(HRESULT hr, const std::string& context)
        : std::runtime_error(context + " " + FormatHResultMessage(hr)), mHResult(hr) {
    }
 
    HRESULT GetHResult() const noexcept {
        return mHResult;
    }
 
  private:
    HRESULT mHResult;
 
    static std::string FormatHResultMessage(HRESULT hr) {
        char buf[64];
        std::snprintf(buf, sizeof(buf), "HRESULT failure: 0x%08X", static_cast<unsigned int>(hr));
        return buf;
    }
};
 
} // namespace Ship
 
#endif