1 files changed, 88 insertions, 0 deletions
diff --git a/tests/lean/External/Funs.lean b/tests/lean/External/Funs.lean
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+++ b/tests/lean/External/Funs.lean
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+-- THIS FILE WAS AUTOMATICALLY GENERATED BY AENEAS
+-- [external]: function definitions
+import Base
+import External.Types
+import External.FunsExternal
+open Primitives
+namespace external
+
+/- [external::swap]: forward function -/
+def swap (T : Type) (x : T) (y : T) (st : State) : Result (State × Unit) :=
+  do
+    let (st0, _) ← core.mem.swap T x y st
+    let (st1, _) ← core.mem.swap_back0 T x y st st0
+    let (st2, _) ← core.mem.swap_back1 T x y st st1
+    Result.ret (st2, ())
+
+/- [external::swap]: backward function 0 -/
+def swap_back
+  (T : Type) (x : T) (y : T) (st : State) (st0 : State) :
+  Result (State × (T × T))
+  :=
+  do
+    let (st1, _) ← core.mem.swap T x y st
+    let (st2, x0) ← core.mem.swap_back0 T x y st st1
+    let (_, y0) ← core.mem.swap_back1 T x y st st2
+    Result.ret (st0, (x0, y0))
+
+/- [external::test_new_non_zero_u32]: forward function -/
+def test_new_non_zero_u32
+  (x : U32) (st : State) : Result (State × core.num.nonzero.NonZeroU32) :=
+  do
+    let (st0, opt) ← core.num.nonzero.NonZeroU32.new x st
+    core.option.Option.unwrap core.num.nonzero.NonZeroU32 opt st0
+
+/- [external::test_vec]: forward function -/
+def test_vec : Result Unit :=
+  do
+    let v := Vec.new U32
+    let _ ← Vec.push U32 v (U32.ofInt 0)
+    Result.ret ()
+
+/- Unit test for [external::test_vec] -/
+#assert (test_vec == .ret ())
+
+/- [external::custom_swap]: forward function -/
+def custom_swap
+  (T : Type) (x : T) (y : T) (st : State) : Result (State × T) :=
+  do
+    let (st0, _) ← core.mem.swap T x y st
+    let (st1, x0) ← core.mem.swap_back0 T x y st st0
+    let (st2, _) ← core.mem.swap_back1 T x y st st1
+    Result.ret (st2, x0)
+
+/- [external::custom_swap]: backward function 0 -/
+def custom_swap_back
+  (T : Type) (x : T) (y : T) (st : State) (ret0 : T) (st0 : State) :
+  Result (State × (T × T))
+  :=
+  do
+    let (st1, _) ← core.mem.swap T x y st
+    let (st2, _) ← core.mem.swap_back0 T x y st st1
+    let (_, y0) ← core.mem.swap_back1 T x y st st2
+    Result.ret (st0, (ret0, y0))
+
+/- [external::test_custom_swap]: forward function -/
+def test_custom_swap
+  (x : U32) (y : U32) (st : State) : Result (State × Unit) :=
+  do
+    let (st0, _) ← custom_swap U32 x y st
+    Result.ret (st0, ())
+
+/- [external::test_custom_swap]: backward function 0 -/
+def test_custom_swap_back
+  (x : U32) (y : U32) (st : State) (st0 : State) :
+  Result (State × (U32 × U32))
+  :=
+  custom_swap_back U32 x y st (U32.ofInt 1) st0
+
+/- [external::test_swap_non_zero]: forward function -/
+def test_swap_non_zero (x : U32) (st : State) : Result (State × U32) :=
+  do
+    let (st0, _) ← swap U32 x (U32.ofInt 0) st
+    let (st1, (x0, _)) ← swap_back U32 x (U32.ofInt 0) st st0
+    if x0 = (U32.ofInt 0)
+    then Result.fail Error.panic
+    else Result.ret (st1, x0)
+
+end external