#ifndef UTIL_POST_H
#define UTIL_POST_H
+[[alias("self")]] entity __self;
+
+// Step 1: auto oldself
+#if 1
+#define SELFPARAM() noref entity this = __self
+#define self __self
+#define SELFCALL(s, f) (__self = s, f)
+#define SELFCALL_DONE() (__self = this)
+#endif
+
+// Step 2: check SELFPARAM() is present for functions that use self
+#if 0
+#define SELFPARAM() [[alias("__self")]] noref entity this = __self
+#define self this
+#define SELFCALL(s, f) (this = s, f)
+#define SELFCALL_DONE() (this = this)
+#endif
+
+// Step 3: const self
+#if 0
+#define SELFPARAM() noref const entity this = __self
+entity setself(entity e) { return self = e; }
+entity getself() { return self; }
+#define self getself()
+#define SELFCALL(s, f) (__self = s, f)
+#define SELFCALL_DONE() (__self = this)
+#endif
+
+// Step 4: enable when possible
+#if 0
+#define SELFPARAM() noref const entity this = __self
+#define self this
+#define SELFCALL(s, f) (__self = s, f)
+#define SELFCALL_DONE() (__self = this)
+#endif
+
#define spawn() new(entity)
#endif