Fix implementation

compiler/passes/src/code_generation/visit_expressions.rs

@@ -299,7 +299,7 @@ impl<'a> CodeGenerator<'a> {
         };
 
         // Construct the instruction.
-        let (destination, instruction) = match input.ty {
+        let (destination, instruction) = match &input.ty {
             Type::Identifier(Identifier { name: sym::BHP256, .. }) => {
                 construct_simple_function_call(&input.name, "bhp256", arguments)
             }
@@ -357,7 +357,7 @@ impl<'a> CodeGenerator<'a> {
                 }
                 _ => unreachable!("The only variants of Mapping are get, get_or, and set"),
             },
-            Type::Group => {
+            Type::Identifier(Identifier { name: sym::group, .. }) => {
                 match input.name {
                     Identifier { name: sym::to_x_coordinate, .. } => {
                         let mut instruction = "    cast".to_string();

compiler/passes/src/type_checking/checker.rs

@@ -863,8 +863,8 @@ impl<'a> TypeChecker<'a> {
             }
             CoreFunction::GroupToXCoordinate | CoreFunction::GroupToYCoordinate => {
                 // Check that the first argument is a group.
-                self.assert_scalar_type(&arguments[0].0, arguments[0].1);
-                Some(Type::Group)
+                self.assert_group_type(&arguments[0].0, arguments[0].1);
+                Some(Type::Field)
             }
         }
     }

tests/expectations/compiler/group/to_x_coordinate.out

@@ -0,0 +1,12 @@
+---
+namespace: Compile
+expectation: Pass
+outputs:
+  - - initial_ast: 466c3da8bb0bc3711a3071784e06a475abbd95c4afa46ce2149bdaf8fbabe6e4
+      unrolled_ast: 466c3da8bb0bc3711a3071784e06a475abbd95c4afa46ce2149bdaf8fbabe6e4
+      ssa_ast: 9455d0f91c594cacc93cba0358e1d40017f65765b59b18a341ea2966b4ecb1df
+      flattened_ast: b0caf68c1a6fe8ee511a80829ab30c35630daa28f86b4be4bf25adf1a0a367a8
+      inlined_ast: b0caf68c1a6fe8ee511a80829ab30c35630daa28f86b4be4bf25adf1a0a367a8
+      dce_ast: b0caf68c1a6fe8ee511a80829ab30c35630daa28f86b4be4bf25adf1a0a367a8
+      bytecode: 51e95e10668242bec30e9917715d9856da632e933c33207ee41c5ed38d6366aa
+      warnings: ""

tests/expectations/compiler/group/to_y_coordinate.out

@@ -0,0 +1,12 @@
+---
+namespace: Compile
+expectation: Pass
+outputs:
+  - - initial_ast: 6cc132d16506cefce980b7ecb6637bc89a6db79e90073c307dbb75a2a25e3251
+      unrolled_ast: 6cc132d16506cefce980b7ecb6637bc89a6db79e90073c307dbb75a2a25e3251
+      ssa_ast: 8b8a2daa8b7e32c23f2d3290ab3557b7b6d98afeb2ae55c35795de7e8180ef79
+      flattened_ast: 00b4b6055c4035a3c016a88afa60f8504dec8542ad6413bd8340f75ce60564b2
+      inlined_ast: 00b4b6055c4035a3c016a88afa60f8504dec8542ad6413bd8340f75ce60564b2
+      dce_ast: 00b4b6055c4035a3c016a88afa60f8504dec8542ad6413bd8340f75ce60564b2
+      bytecode: ea2e94f0f589fac4565040575643b1b7cd7813fe513d5b09b17c191bbf0f727e
+      warnings: ""

tests/tests/compiler/group/to_x_coordinate.leo

@@ -0,0 +1,10 @@
+/*
+namespace: Compile
+expectation: Pass
+*/
+
+program test.aleo {
+    transition main(a: group) -> field {
+        return group::to_x_coordinate(a);
+    }
+}

tests/tests/compiler/group/to_y_coordinate.leo

@@ -0,0 +1,10 @@
+/*
+namespace: Compile
+expectation: Pass
+*/
+
+program test.aleo {
+    transition main(a: group) -> field {
+        return group::to_y_coordinate(a);
+    }
+}

tests/tests/execution/group_operations.leo

@@ -0,0 +1,18 @@
+/*
+namespace: Execute
+expectation: Pass
+cases:
+    main:
+    - input: ["0group"]
+    - input: ["2group"]
+*/
+
+program test.aleo {
+    transition main(a: group) -> (field, field) {
+        let b: field = group::to_x_coordinate(a);
+        let c: field = a as field;
+        assert_eq(b, c);
+        let d: field = group::to_y_coordinate(a);
+        return (b, d);
+    }
+}