Include variable names with _

runtime/vm/scopes.cc

 // 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.
 
 #include "vm/scopes.h"
 
 #include "vm/ast.h"
 #include "vm/bit_vector.h"
 #include "vm/object.h"
 #include "vm/parser.h"
@@ skipping 196 matching lines @@
 
   const LocalVarDescriptors& var_desc =
       LocalVarDescriptors::Handle(LocalVarDescriptors::New(vars.length()));
   for (int i = 0; i < vars.length(); i++) {
     var_desc.SetVar(i, *(vars[i].name), &vars[i].info);
   }
   return var_desc.raw();
 }
 
 
+// The parser creates internal variables that start with ":"
+static bool IsInternalIdentifier(const String& str) {
+  ASSERT(str.Length() > 0);
+  return str.CharAt(0) == ':';
+}
+
+
 // Add variables that are declared in this scope to vars, then collect
 // variables of children, followed by siblings.
 void LocalScope::CollectLocalVariables(GrowableArray<VarDesc>* vars,
                                        int16_t* scope_id) {
   (*scope_id)++;
   if (HasContextLevel() &&
       ((parent() == NULL) ||
       (!parent()->HasContextLevel()) ||
       (parent()->context_level() != context_level()))) {
     // This is the outermost scope with a context level or this scope's
     // context level differes from its parent's level.
     VarDesc desc;
     desc.name = &String::Handle();  // No name.
     desc.info.kind =  RawLocalVarDescriptors::kContextLevel;
     desc.info.scope_id = *scope_id;
     desc.info.begin_pos = begin_token_pos();
     desc.info.end_pos = end_token_pos();
     desc.info.index = context_level();
     vars->Add(desc);
   }
   for (int i = 0; i < this->variables_.length(); i++) {
     LocalVariable* var = variables_[i];
     if (var->owner() == this) {
-      if (Scanner::IsIdent(var->name())) {
+      if (!IsInternalIdentifier(var->name())) {
         // This is a regular Dart variable, either stack-based or captured.
         VarDesc desc;
         desc.name = &var->name();
         if (var->is_captured()) {
           desc.info.kind = RawLocalVarDescriptors::kContextVar;
           ASSERT(var->owner() != NULL);
           ASSERT(var->owner()->context_level() >= 0);
           desc.info.scope_id = var->owner()->context_level();
         } else {
           desc.info.kind = RawLocalVarDescriptors::kStackVar;
@@ skipping 293 matching lines @@
   } else {
     // Shift negative indexes so that the lowest one is 0 (they are still
     // non-positive) and index them backward from the end of the vector.
     return (var_count - 1) +
         (index() - ParsedFunction::kFirstLocalSlotIndex);
   }
 }
 
 
 }  // namespace dart