Updated parser to produce error when trying to reinitialize final variables in class constructors. …

tests/language/final_attempt_reinitialization_test.dart

+// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+class Foo {
+  Foo(this.x);
+  final int x = 42;
+}
+
+class CoffeeShop {
+  final String name = "Coffee Lab";
+  CoffeeShop.name(String name) : this.name = name;
+}
+
+void main() {
+  Foo f = new Foo(10); //# 01: compile-time error
+  CoffeeShop presidentialCoffee = //# 02: compile-time error
+      new CoffeeShop.name("Covfefe Lab"); //# 02: compile-time error

[siva, 2017/06/16 00:51:10]

Does it need # 02: in both the lines? Is it not sufficient to say #02 in line
18?

[bkonyi, 2017/06/16 19:40:44]

Apparently we do, or else we get an unexpected token '}' error thrown at line
19.

+}