Allow constructor and method signatures in classes

src/parsing/preparser.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <cmath>
 
 #include "src/allocation.h"
 #include "src/base/logging.h"
 #include "src/conversions-inl.h"
 #include "src/conversions.h"
@@ skipping 1041 matching lines @@
   CheckArityRestrictions(formals.arity, kind, formals.has_rest, start_position,
                          formals_end_position, CHECK_OK);
 
   // See Parser::ParseFunctionLiteral for more information about lazy parsing
   // and lazy compilation.
   bool is_lazily_parsed =
       (outer_is_script_scope && allow_lazy() && !parenthesized_function_);
   parenthesized_function_ = false;
 
   // Parse optional type annotation.
-  if (scope_->typed() && Check(Token::COLON)) {  // Braces required here.
+  if (scope_->typed() &&
+      !(type_flags & typesystem::kDisallowTypeAnnotation) &&
+      Check(Token::COLON)) {  // Braces required here.
     ParseValidType(CHECK_OK);
   }
 
   // Allow for a function signature (i.e., a literal without body).
   if (peek() != Token::LBRACE && scope_->typed() &&
       (type_flags & typesystem::kAllowSignature)) {
     ExpectSemicolon(CHECK_OK);
     return this->EmptyExpression();
   }
 
@@ skipping 146 matching lines @@
     Expect(Token::RBRACE, CHECK_OK);
     return PreParserExpression::Default();
   }
 }
 
 #undef CHECK_OK
 
 
 }  // namespace internal
 }  // namespace v8