Proof of concept readme

README.md

@@ -1,2 +1,33 @@
 # memory-models
+
 Memory models in C for researching static compiler analysis
+
+Many people overhype the rust borrow checker, i'm going to prove how terrible it is by creating a better memory model.
+
+## Current iteration
+
+It's called `sc` (scope counting), think of it as a relative counter to the lifetime of a variable.
+
+```rust
+{
+    let x = Box::new(10); // sc = 0
+
+    // sc is 0, drop it
+}
+```
+
+```rust
+let r; // sc = 0
+
+{
+    // sc of r = -1 (relative to current scope)
+
+    let x = Box::new(10); // sc = 0
+
+    r = &x; // sc of x = -(sc of r) aka 1
+
+    // sc is 1, don't drop it
+}
+
+// sc is 0, drop it
+```

scope-count.c

@@ -8,17 +8,14 @@ struct ScopeCount
     void *item;
 };
 
-int scope_count(void *item, int is_alias)
+struct ScopeCount scope_count(void *item)
 {
     struct ScopeCount sc;
     sc.count = 0;
     sc.is_alias = 0;
     sc.item = item;
 
-    sc.count++;
-    sc.is_alias = is_alias;
-
-    return sc.count;
+    return sc;
 }
 
 void end_scope(struct ScopeCount *sc)
@@ -32,14 +29,12 @@ void end_scope(struct ScopeCount *sc)
 
 struct ScopeCount do_something()
 {
-    struct ScopeCount sc;
-    sc.count = 1;
-    sc.is_alias = 0;
-
-    sc.item = malloc(sizeof(int));
+    struct ScopeCount sc = scope_count((void *)malloc(sizeof(int)));
 
     *(int *)sc.item = 67;
 
+    sc.count = 1;
+
     end_scope(&sc);
 
     return sc;