fixes: 'method' is only allowed at top level (#1173)

Author: ringabout

src/nimony/semdecls.nim

@@ -423,6 +423,9 @@ proc attachConverter(c: var SemContext; symId: SymId;
 
 proc attachMethod(c: var SemContext; symId: SymId;
                   declStart, beforeParams, beforeGenericParams: int; info: PackedLineInfo) =
+  if c.currentScope.up.kind != ToplevelScope:
+    buildErr c, info, "'method' is only allowed at top level"
+
   var params = cursorAt(c.dest, beforeParams)
   var root = SymId(0)
   var signature = StrId(0)

tests/nimony/methods/tlocalmethods.msgs

@@ -0,0 +1 @@
+tests/nimony/methods/tlocalmethods.nim(7, 3) Error: 'method' is only allowed at top level

tests/nimony/methods/tlocalmethods.nim

@@ -0,0 +1,8 @@
+
+type
+  TestTestObj = ref object of RootObj
+    id: int
+
+block:
+  method foo(x: TestTestObj) =
+    discard