asserts and cleanup

1 files changed, 9 insertions, 4 deletions

diff --git a/snag/src/util.h b/snag/src/util.h
index 1300ace..0c684a4 100644
--- a/snag/src/util.h
+++ b/snag/src/util.h
@@ -3,18 +3,23 @@
 
 #include <stdarg.h>
 #include <stddef.h>
+#include <stdbool.h>
 
 // utility for errors
 #if !DEBUG
     void die(const char* format, ...) __attribute__((format(printf, 1, 2)));
     void* emalloc(size_t size, char* alloc_reason);
+    #define assert(condition) ((void)0)
 #else
+    #define die(fmt, ...) _die(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
+    void _die(const char* file, int line, const char* format, ...) __attribute__((format(printf, 3, 4)));
 
-    #define die(fmt, ...) _die(__LINE__, __FILE__, fmt, ##__VA_ARGS__)
-    void _die(int line, const char* file, const char* format, ...) __attribute__((format(printf, 3, 4)));
+    #define emalloc(size, alloc_reason) _emalloc(__FILE__, __LINE__, size, alloc_reason)
+    void* _emalloc(const char* file, int line, size_t size, char* alloc_reason);
+
+    #define assert(condition) do { if (!(condition)) _failassert(__FILE__, __LINE__, #condition); } while(0)
+    void _failassert(const char* file, int line, char* contents);
 
-    #define emalloc(size, alloc_reason) _emalloc(__LINE__, __FILE__, size, alloc_reason)
-    void* _emalloc(int line, const char* file, size_t size, char* alloc_reason);
 #endif
 
 // functions for outputting and displaying text, log is used for nonroutine bad things