Restart AST node numbering when we enter a function.

src/prettyprinter.cc

-// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
@@ skipping 989 matching lines @@
   Variable* var = node->var();
   if (var != NULL && var->rewrite() != NULL) {
     IndentedScope indent(this);
     Visit(var->rewrite());
   }
 }
 
 
 void AstPrinter::VisitAssignment(Assignment* node) {
   IndentedScope indent(this, Token::Name(node->op()), node);
+  Print("%d ", node->id());
   Visit(node->target());
   Visit(node->value());
 }
 
 
 void AstPrinter::VisitThrow(Throw* node) {
   PrintIndentedVisit("THROW", node->exception());
 }
 
 
@@ skipping 500 matching lines @@
     AddAttribute("mode", Variable::Mode2String(decl->mode()));
   }
   Visit(decl->proxy());
   if (decl->fun() != NULL) Visit(decl->fun());
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal