Better error for missing member on circuit init

compiler/passes/src/type_checker/check_expressions.rs

@@ -159,9 +159,6 @@ impl<'a> ExpressionVisitor<'a> for TypeChecker<'a> {
             }
 
             // Check circuit member types.
-            // TODO: Leo errors for:
-            //  - missing members on initialization.
-            //  - members that don't exist in the circuit
             circ.members
                 .iter()
                 .for_each(|CircuitMember::CircuitVariable(name, ty)| {
@@ -171,10 +168,10 @@ impl<'a> ExpressionVisitor<'a> for TypeChecker<'a> {
                             self.visit_expression(expr, &Some(*ty));
                         }
                     } else {
-                        self.handler.emit_err(TypeCheckerError::unknown_sym(
-                            "circuit member variable",
+                        self.handler.emit_err(TypeCheckerError::missing_circuit_member(
+                            circ.identifier,
                             name,
-                            name.span(),
+                            input.span(),
                         ));
                     };
                 });

leo/errors/src/errors/type_checker/type_checker_error.rs

@@ -216,7 +216,7 @@ create_messages!(
     missing_circuit_member {
         args: (circuit: impl Display, member: impl Display),
         msg: format!(
-            "Circuit `{circuit}` missing member `{member}`.",
+            "Circuit initialization expression for `{circuit}` is missing member `{member}`.",
         ),
         help: None,
     }

tests/expectations/compiler/compiler/records/init_expression_var_fail.out

@@ -2,4 +2,4 @@
 namespace: Compile
 expectation: Fail
 outputs:
-  - "Error [ETYC0372006]: Unknown circuit member variable `owner`\n    --> compiler-test:5:5\n     |\n   5 |     owner: address,\n     |     ^^^^^\n"
+  - "Error [ETYC0372019]: Circuit initialization expression for `Token` is missing member `owner`.\n    --> compiler-test:13:12\n     |\n  13 |     return Token {\n  14 |         sender: r0, // This variable should be named `owner`.\n  15 |         balance: 0u64,\n  16 |         amount: r1,\n  17 |     };\n     |      ^^^^^^\n"