- Allow patching of top-level methods and accessors.

runtime/vm/parser.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_PARSER_H_
 #define VM_PARSER_H_
 
 #include "include/dart_api.h"
 
 #include "vm/ast.h"
@@ skipping 163 matching lines @@
   // The class or interface being parsed.
   const Class& current_class() const;
   void set_current_class(const Class& value);
 
   // Parsing a library or a regular source script.
   bool is_library_source() const {
     return (script_.kind() == RawScript::kScriptTag) ||
         (script_.kind() == RawScript::kLibraryTag);
   }
 
+  // Parsing library patch script.
+  bool is_patch_source() const {
+    return script_.kind() == RawScript::kPatchTag;
+  }
+
   intptr_t TokenPos() const { return tokens_iterator_.CurrentPosition(); }
   inline Token::Kind CurrentToken();
   Token::Kind LookaheadToken(int num_tokens);
   String* CurrentLiteral() const;
   RawDouble* CurrentDoubleLiteral() const;
   RawInteger* CurrentIntegerLiteral() const;
 
   // Sets parser to given token position in the stream.
   void SetPosition(intptr_t position);
 
@@ skipping 371 matching lines @@
 
   // Allocate temporary only once per function.
   LocalVariable* expression_temp_;
 
   DISALLOW_COPY_AND_ASSIGN(Parser);
 };
 
 }  // namespace dart
 
 #endif  // VM_PARSER_H_