// TODO: Replace standard headers when possible.
#include <stdio.h>
#include "malunal/assert.h"

static
assertion_handler_pfn_t
g_handler;

malunal_void_t
assertion_handler(
	assertion_handler_pfn_t handler
) {
	g_handler = handler;
}

malunal_void_t
assertion_test(
  malunal_bool_t  cond,
  malunal_cstr_t  expr,
  malunal_cstr_t  msg,
  malunal_cstr_t  file,
  malunal_int32_t line
) {
	if (!cond) assertion_failed(expr, msg, file, line);
}

malunal_void_t
assertion_failed(
  malunal_cstr_t  expr,
  malunal_cstr_t  msg,
  malunal_cstr_t  file,
  malunal_int32_t line
) {
	if (g_handler != null)
		return (*g_handler)(expr, msg, file, line);

	malunal_cstr_t format = msg != null
		? "%s:%d '%s' Assertion Failed!\n  ↳ %s\n"
		: "%s:%d '%s' Assertion Failed!\n";
	fprintf(stderr, format, file, line, expr, msg);
	abort();
}