Eliminate GrowableTokenStream

runtime/lib/integers.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/bootstrap_natives.h"
 
 #include "include/dart_api.h"
 #include "vm/dart_entry.h"
 #include "vm/dart_api_impl.h"
 #include "vm/exceptions.h"
@@ skipping 188 matching lines @@
       char* p_end = NULL;
       const int64_t int_value = strtoll(cstr, &p_end, 10);
       if (p_end == (cstr + len)) {
         if ((int_value != LLONG_MIN) && (int_value != LLONG_MAX)) {
           return Integer::New(int_value);
         }
       }
     }
   }
 
-  Scanner scanner(value, Symbols::Empty());
-  const Scanner::GrowableTokenStream& tokens = scanner.GetStream();
   const String* int_string;
   bool is_positive;
-  if (Scanner::IsValidLiteral(tokens,
-                             Token::kINTEGER,
-                             &is_positive,
-                             &int_string)) {
+  if (Scanner::IsValidInteger(value, &is_positive, &int_string)) {
     if (is_positive) {
       return Integer::New(*int_string);
     }
     String& temp = String::Handle();
     temp = String::Concat(Symbols::Dash(), *int_string);
     return Integer::New(temp);
   }
 
   return Integer::null();
 }
@@ skipping 175 matching lines @@
 DEFINE_NATIVE_ENTRY(Bigint_allocate, 4) {
   // First arg is null type arguments, since class Bigint is not parameterized.
   const Bool& neg = Bool::CheckedHandle(arguments->NativeArgAt(1));
   const Smi& used = Smi::CheckedHandle(arguments->NativeArgAt(2));
   const TypedData& digits = TypedData::CheckedHandle(arguments->NativeArgAt(3));
   ASSERT(!digits.IsNull());
   return Bigint::New(neg.value(), used.Value(), digits);
 }
 
 }  // namespace dart