Merge pull request #1 from AeneasVerif/constants-v2

Implement support for globals

3 files changed, 154 insertions, 14 deletions

diff --git a/tests/misc/Constants.fst b/tests/misc/Constants.fst
new file mode 100644
index 00000000..4a9a0e48
--- /dev/null
+++ b/tests/misc/Constants.fst
@@ -0,0 +1,137 @@
+(** THIS FILE WAS AUTOMATICALLY GENERATED BY AENEAS *)
+(** [constants] *)
+module Constants
+open Primitives
+
+#set-options "--z3rlimit 50 --fuel 1 --ifuel 1"
+
+(** [constants::X0] *)
+let x0_body : result u32 = Return 0
+let x0_c : u32 = eval_global x0_body
+
+(** [core::num::u32::{8}::MAX] *)
+let core_num_u32_max_body : result u32 = Return 4294967295
+let core_num_u32_max_c : u32 = eval_global core_num_u32_max_body
+
+(** [constants::X1] *)
+let x1_body : result u32 = Return core_num_u32_max_c
+let x1_c : u32 = eval_global x1_body
+
+(** [constants::X2] *)
+let x2_body : result u32 = Return 3
+let x2_c : u32 = eval_global x2_body
+
+(** [constants::incr] *)
+let incr_fwd (n : u32) : result u32 =
+  begin match u32_add n 1 with | Fail -> Fail | Return i -> Return i end
+
+(** [constants::X3] *)
+let x3_body : result u32 =
+  begin match incr_fwd 32 with | Fail -> Fail | Return i -> Return i end
+let x3_c : u32 = eval_global x3_body
+
+(** [constants::mk_pair0] *)
+let mk_pair0_fwd (x : u32) (y : u32) : result (u32 & u32) = Return (x, y)
+
+(** [constants::Pair] *)
+type pair_t (t1 t2 : Type0) = { pair_x : t1; pair_y : t2; }
+
+(** [constants::mk_pair1] *)
+let mk_pair1_fwd (x : u32) (y : u32) : result (pair_t u32 u32) =
+  Return (Mkpair_t x y)
+
+(** [constants::P0] *)
+let p0_body : result (u32 & u32) =
+  begin match mk_pair0_fwd 0 1 with | Fail -> Fail | Return p -> Return p end
+let p0_c : (u32 & u32) = eval_global p0_body
+
+(** [constants::P1] *)
+let p1_body : result (pair_t u32 u32) =
+  begin match mk_pair1_fwd 0 1 with | Fail -> Fail | Return p -> Return p end
+let p1_c : pair_t u32 u32 = eval_global p1_body
+
+(** [constants::P2] *)
+let p2_body : result (u32 & u32) = Return (0, 1)
+let p2_c : (u32 & u32) = eval_global p2_body
+
+(** [constants::P3] *)
+let p3_body : result (pair_t u32 u32) = Return (Mkpair_t 0 1)
+let p3_c : pair_t u32 u32 = eval_global p3_body
+
+(** [constants::Wrap] *)
+type wrap_t (t : Type0) = { wrap_val : t; }
+
+(** [constants::Wrap::{0}::new] *)
+let wrap_new_fwd (t : Type0) (val0 : t) : result (wrap_t t) =
+  Return (Mkwrap_t val0)
+
+(** [constants::Y] *)
+let y_body : result (wrap_t i32) =
+  begin match wrap_new_fwd i32 2 with | Fail -> Fail | Return w -> Return w end
+let y_c : wrap_t i32 = eval_global y_body
+
+(** [constants::unwrap_y] *)
+let unwrap_y_fwd : result i32 = Return y_c.wrap_val
+
+(** [constants::YVAL] *)
+let yval_body : result i32 =
+  begin match unwrap_y_fwd with | Fail -> Fail | Return i -> Return i end
+let yval_c : i32 = eval_global yval_body
+
+(** [constants::get_z1::Z1] *)
+let get_z1_z1_body : result i32 = Return 3
+let get_z1_z1_c : i32 = eval_global get_z1_z1_body
+
+(** [constants::get_z1] *)
+let get_z1_fwd : result i32 = Return get_z1_z1_c
+
+(** [constants::add] *)
+let add_fwd (a : i32) (b : i32) : result i32 =
+  begin match i32_add a b with | Fail -> Fail | Return i -> Return i end
+
+(** [constants::Q1] *)
+let q1_body : result i32 = Return 5
+let q1_c : i32 = eval_global q1_body
+
+(** [constants::Q2] *)
+let q2_body : result i32 = Return q1_c
+let q2_c : i32 = eval_global q2_body
+
+(** [constants::Q3] *)
+let q3_body : result i32 =
+  begin match add_fwd q2_c 3 with | Fail -> Fail | Return i -> Return i end
+let q3_c : i32 = eval_global q3_body
+
+(** [constants::get_z2] *)
+let get_z2_fwd : result i32 =
+  begin match get_z1_fwd with
+  | Fail -> Fail
+  | Return i ->
+    begin match add_fwd i q3_c with
+    | Fail -> Fail
+    | Return i0 ->
+      begin match add_fwd q1_c i0 with
+      | Fail -> Fail
+      | Return i1 -> Return i1
+      end
+    end
+  end
+
+(** [constants::S1] *)
+let s1_body : result u32 = Return 6
+let s1_c : u32 = eval_global s1_body
+
+(** [constants::S2] *)
+let s2_body : result u32 =
+  begin match incr_fwd s1_c with | Fail -> Fail | Return i -> Return i end
+let s2_c : u32 = eval_global s2_body
+
+(** [constants::S3] *)
+let s3_body : result (pair_t u32 u32) = Return p3_c
+let s3_c : pair_t u32 u32 = eval_global s3_body
+
+(** [constants::S4] *)
+let s4_body : result (pair_t u32 u32) =
+  begin match mk_pair1_fwd 7 8 with | Fail -> Fail | Return p -> Return p end
+let s4_c : pair_t u32 u32 = eval_global s4_body
+
diff --git a/tests/misc/NoNestedBorrows.fst b/tests/misc/NoNestedBorrows.fst
index 35d32514..a694cff1 100644
--- a/tests/misc/NoNestedBorrows.fst
+++ b/tests/misc/NoNestedBorrows.fst
@@ -218,36 +218,36 @@ let _ = assert_norm (get_elem_test_fwd = Return ())
 (** [no_nested_borrows::test_char] *)
 let test_char_fwd : result char = Return 'a'
 
-(** [no_nested_borrows::Tree] *)
-type tree_t (t : Type0) =
-| TreeLeaf : t -> tree_t t
-| TreeNode : t -> node_elem_t t -> tree_t t -> tree_t t
-
 (** [no_nested_borrows::NodeElem] *)
-and node_elem_t (t : Type0) =
+type node_elem_t (t : Type0) =
 | NodeElemCons : tree_t t -> node_elem_t t -> node_elem_t t
 | NodeElemNil : node_elem_t t
 
-(** [no_nested_borrows::even] *)
-let rec even_fwd (x : u32) : result bool =
+(** [no_nested_borrows::Tree] *)
+and tree_t (t : Type0) =
+| TreeLeaf : t -> tree_t t
+| TreeNode : t -> node_elem_t t -> tree_t t -> tree_t t
+
+(** [no_nested_borrows::odd] *)
+let rec odd_fwd (x : u32) : result bool =
   if x = 0
-  then Return true
+  then Return false
   else
     begin match u32_sub x 1 with
     | Fail -> Fail
     | Return i ->
-      begin match odd_fwd i with | Fail -> Fail | Return b -> Return b end
+      begin match even_fwd i with | Fail -> Fail | Return b -> Return b end
     end
 
-(** [no_nested_borrows::odd] *)
-and odd_fwd (x : u32) : result bool =
+(** [no_nested_borrows::even] *)
+and even_fwd (x : u32) : result bool =
   if x = 0
-  then Return false
+  then Return true
   else
     begin match u32_sub x 1 with
     | Fail -> Fail
     | Return i ->
-      begin match even_fwd i with | Fail -> Fail | Return b -> Return b end
+      begin match odd_fwd i with | Fail -> Fail | Return b -> Return b end
     end
 
 (** [no_nested_borrows::test_even_odd] *)
diff --git a/tests/misc/Primitives.fst b/tests/misc/Primitives.fst
index fe351f3a..b44fe9d1 100644
--- a/tests/misc/Primitives.fst
+++ b/tests/misc/Primitives.fst
@@ -34,6 +34,9 @@ let bind (#a #b : Type0) (m : result a) (f : a -> result b) : result b =
 // Monadic assert(...)
 let massert (b:bool) : result unit = if b then Return () else Fail
 
+// Normalize and unwrap a successful result (used for globals).
+let eval_global (#a : Type0) (x : result a{Return? (normalize_term x)}) : a = Return?.v x
+
 (*** Misc *)
 type char = FStar.Char.char
 type string = string