Merge branch 'feature/unsupported-deep-map-ops' into 'dev'

fix unsupported deep_map assignements and remove. add tests

See merge request ligolang/ligo!125

src/passes/2-simplify/pascaligo.ml

@@ -109,17 +109,6 @@ module Errors = struct
     ] in
     error ~data title message
 
-  let unsupported_deep_map_assign v =
-    let title () = "map assignments" in
-    let message () =
-      Format.asprintf "assignments to embedded maps are not \
-                       supported yet" in
-    let data = [
-      ("lhs_loc",
-       fun () -> Format.asprintf "%a" Location.pp_lift @@ v.Region.region)
-    ] in
-    error ~data title message
-
   let unsupported_empty_record_patch record_expr =
     let title () = "empty record patch" in
     let message () =
@@ -152,18 +141,6 @@ module Errors = struct
     ] in
     error ~data title message
 
-  let unsupported_deep_map_rm path =
-    let title () = "binding removals" in
-    let message () =
-      Format.asprintf "removal of bindings from embedded maps \
-                       are not supported yet" in
-    let data = [
-      ("path_loc",
-       fun () -> Format.asprintf "%a" Location.pp_lift @@ path.Region.region)
-    ] in
-    error ~data title message
-
-
   (* let unsupported_set_removal remove =
     let title () = "set removals" in
     let message () =
@@ -791,13 +768,16 @@ and simpl_single_instruction : Raw.single_instr -> (_ -> expression result) resu
           )
         | MapPath v -> (
             let v' = v.value in
-            let%bind name = match v'.path with
-              | Name name -> ok name
-              | _ -> fail @@ unsupported_deep_map_assign v in
+            let%bind (varname,map,path) = match v'.path with
+              | Name name -> ok (name.value , e_variable name.value, [])
+              | Path p ->
+                let (name,p') = simpl_path v'.path in
+                let%bind accessor = simpl_projection p in 
+                ok @@ (name , accessor , p')
+            in
             let%bind key_expr = simpl_expression v'.index.value.inside in
-            let old_expr = e_variable name.value in
-            let expr' = e_map_add key_expr value_expr old_expr in
-            return_statement @@ e_assign ~loc name.value [] expr'
+            let expr' = e_map_add key_expr value_expr map in
+            return_statement @@ e_assign ~loc varname path expr'
           )
     )
   | CaseInstr c -> (
@@ -844,12 +824,16 @@ and simpl_single_instruction : Raw.single_instr -> (_ -> expression result) resu
   | MapRemove r -> (
       let (v , loc) = r_split r in
       let key = v.key in
-      let%bind map = match v.map with
-        | Name v -> ok v.value
-        | Path path -> fail @@ unsupported_deep_map_rm path in
+      let%bind (varname,map,path) = match v.map with
+        | Name v -> ok (v.value , e_variable v.value , [])
+        | Path p ->
+          let (name,p') = simpl_path v.map in
+          let%bind accessor = simpl_projection p in 
+          ok @@ (name , accessor , p')
+      in
       let%bind key' = simpl_expression key in
-      let expr = e_constant ~loc "MAP_REMOVE" [key' ; e_variable map] in
-      return_statement @@ e_assign ~loc map [] expr
+      let expr = e_constant ~loc "MAP_REMOVE" [key' ; map] in
+      return_statement @@ e_assign ~loc varname path expr
     )
   | SetRemove r -> (
       let (set_rm, loc) = r_split r in

src/test/contracts/map.ligo

@@ -54,3 +54,10 @@ function map_op (const m : foobar) : foobar is
 function fold_op (const m : foobar) : int is
   function aggregate (const i : int ; const j : (int * int)) : int is block { skip } with i + j.0 + j.1 ;
   block { skip } with map_fold(m , 10 , aggregate)
+
+function deep_op (var m : foobar) : foobar is
+var coco : (int*foobar) := (0, m);
+block {
+  remove 42 from map coco.1 ;
+  coco.1[32] := 16 ;
+} with coco.1

src/test/contracts/map.mligo

@@ -29,3 +29,9 @@ let map_op (m : foobar) : foobar =
 let fold_op (m : foobar) : foobar =
     let aggregate = fun (i : int) (j : (int * int)) -> i + j.(0) + j.(1) in
     Map.fold m 10 aggregate
+
+let deep_op (m : foobar) : foobar =
+  let coco = (0,m) in
+  let coco = (0 , Map.remove 42 coco.(1)) in
+  let coco = (0 , Map.update 32 (Some 16) coco.(1)) in
+  coco.(1)

src/test/integration_tests.ml

@@ -456,6 +456,11 @@ let map_ type_f path : unit result =
     let expected = e_int 76 in
     expect_eq program "fold_op" input expected
   in
+  let%bind () =
+    let input = ez [(2 , 20) ; (42 , 10)] in
+    let expected = ez [(2 , 20) ; (32 , 16) ] in
+    expect_eq program "deep_op" input expected
+  in
   ok ()
 
 let big_map_ type_f path : unit result =