#include <stdarg.h>
#include <stdio.h>

#ifndef NDEBUG
#define NDEBUG
#endif

#ifdef NDEBUG
#define NO_DEBUG_OUTPUT
#endif

// Use this function to output messages when something unexpected
// happens (which might be an indication of an error). *Don't* use it
// when there's internal errors in the code - these should be handled
// by asserts.
#ifndef NO_DEBUG_OUTPUT
void tgl_warning(const char *, ...) { }
#else
void tgl_warning(const char *format, ...) {
	va_list args;
	va_start(args, format);
	fprintf(stderr, "*WARNING* ");
	vfprintf(stderr, format, args);
	va_end(args);
}
#endif // !NO_DEBUG_OUTPUT

// This function should be used for debug output only.
#ifndef NO_DEBUG_OUTPUT
void tgl_trace(const char *, ...) { }
#else
void tgl_trace(const char *format, ...) {
	va_list args;
	va_start(args, format);
	fprintf(stderr, "*DEBUG* ");
	vfprintf(stderr, format, args);
	va_end(args);
}
#endif // !NO_DEBUG_OUTPUT

// Use this function to output info about things in the code which
// should be fixed (missing handling of special cases, important
// features not implemented, known bugs/buglets, ...).
#ifndef NO_DEBUG_OUTPUT
void tgl_fixme(const char *, ...) { }
#else
void tgl_fixme(const char *format, ...) {
	va_list args;
	va_start(args, format);
	fprintf(stderr, "*FIXME* ");
	vfprintf(stderr, format, args);
	va_end(args);
}
#endif // !NO_DEBUG_OUTPUT