nix-super/src/libutil-c/nix_api_util_internal.h
2024-04-15 12:05:57 +02:00

49 lines
1.2 KiB
C++

#ifndef NIX_API_UTIL_INTERNAL_H
#define NIX_API_UTIL_INTERNAL_H
#include <string>
#include <optional>
#include "error.hh"
#include "nix_api_util.h"
struct nix_c_context
{
nix_err last_err_code = NIX_OK;
std::optional<std::string> last_err = {};
std::optional<nix::ErrorInfo> info = {};
std::string name = "";
};
nix_err nix_context_error(nix_c_context * context);
/**
* Internal use only.
*
* Helper to invoke nix_get_string_callback
* @param context optional, the context to store errors in if this function
* fails
* @param str The string to observe
* @param callback Called with the observed string.
* @param user_data optional, arbitrary data, passed to the callback when it's called.
* @return NIX_OK if there were no errors.
* @see nix_get_string_callback
*/
nix_err call_nix_get_string_callback(const std::string str, nix_get_string_callback callback, void * user_data);
#define NIXC_CATCH_ERRS \
catch (...) \
{ \
return nix_context_error(context); \
} \
return NIX_OK;
#define NIXC_CATCH_ERRS_RES(def) \
catch (...) \
{ \
nix_context_error(context); \
return def; \
}
#define NIXC_CATCH_ERRS_NULL NIXC_CATCH_ERRS_RES(nullptr)
#endif // NIX_API_UTIL_INTERNAL_H