remove optional from parseTopDecl

examples/hello.v

@@ -34,4 +34,15 @@ fn main(a int) int {
 	cock_and_ball_torture('cbt', 1, 2, 3)
 
 	return 23
+
+	//p := Point{
+	//	x: 10 
+	//	y: 20 
+	//} 
+	//println(p.x) 
 }
+
+//struct Point {
+//	x int
+//	y int 
+//} 

src/parser.zig

@@ -325,8 +325,7 @@ pub const Parser = struct {
             if (token.ttype == .EOF) break;
 
             var node = try self.parseTopDecl();
-            if (node == null) continue;
-            try root.Root.append(node.?);
+            try root.Root.append(node);
         }
 
         if (self.hadError) {
@@ -336,7 +335,7 @@ pub const Parser = struct {
         return root;
     }
 
-    fn parseFnDecl(self: *@This()) !?*Node {
+    fn parseFnDecl(self: *@This()) !*Node {
         var param_list = ast.ParamList.init(self.allocator);
         errdefer param_list.deinit();
 
@@ -365,7 +364,7 @@ pub const Parser = struct {
         return try self.mkFnDecl(name, param_list, return_type, block_node.Block);
     }
 
-    fn parseConstDecl(self: *@This()) !?*Node {
+    fn parseConstDecl(self: *@This()) !*Node {
         var consts = ast.ConstList.init(self.allocator);
         errdefer consts.deinit();
 
@@ -389,14 +388,14 @@ pub const Parser = struct {
         return self.mkConstDecl(consts);
     }
 
-    fn parseTopDecl(self: *@This()) !?*Node {
+    fn parseTopDecl(self: *@This()) !*Node {
         return switch (self.peek().ttype) {
             .Fn => try self.parseFnDecl(),
             .Const => try self.parseConstDecl(),
 
             else => |ttype| blk: {
                 self.doError("(basic) expected fn/const, got {}\n", ttype);
-                break :blk null;
+                return Result.CompileError;
             },
         };
     }