Source positions for constructors and lots of async machinery

runtime/vm/ast.h

 // Copyright (c) 2012, 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.
 
 #ifndef VM_AST_H_
 #define VM_AST_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
@@ skipping 81 matching lines @@
 #define DECLARE_COMMON_NODE_FUNCTIONS(type)                                    \
   virtual void Visit(AstNodeVisitor* visitor);                                 \
   virtual const char* PrettyName() const;                                      \
   virtual type* As##type() { return this; }
 
 
 class AstNode : public ZoneAllocated {
  public:
   explicit AstNode(intptr_t token_pos)
       : token_pos_(token_pos) {
-    ASSERT(Scanner::ValidSourcePosition(token_pos_));
+    ASSERT(Scanner::ValidSourcePosition(token_pos_) ||
+           (token_pos_ == ClassifyingTokenPositions::kMethodExtractor));
   }
   virtual ~AstNode() { }
 
   intptr_t token_pos() const { return token_pos_; }
 
 #define AST_TYPE_CHECK(BaseName)                                               \
   bool Is##BaseName##Node() { return As##BaseName##Node() != NULL; }           \
   virtual BaseName##Node* As##BaseName##Node() { return NULL; }
 
   FOR_EACH_NODE(AST_TYPE_CHECK)
@@ skipping 1913 matching lines @@
   const intptr_t try_index_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(InlinedFinallyNode);
 };
 
 }  // namespace dart
 
 #undef DECLARE_COMMON_NODE_FUNCTIONS
 
 #endif  // VM_AST_H_