First round of changes to the file interface.

runtime/bin/builtin_in.cc

 // Copyright (c) 2011, 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 <stdlib.h>
 #include <string.h>
 
 #include "include/dart_api.h"
 
 #include "bin/builtin.h"
@@ skipping 10 matching lines @@
 
 // List all native functions implemented in standalone dart that is used
 // to inject additional functionality e.g: Logger, file I/O, socket I/O etc.
 #define BUILTIN_NATIVE_LIST(V)                                                 \
   V(Logger_PrintString, 1)                                                     \
   V(Directory_List, 7)                                                         \
   V(Directory_Exists, 2)                                                       \
   V(Directory_Create, 2)                                                       \
   V(Directory_Delete, 2)                                                       \
   V(File_OpenFile, 3)                                                          \
-  V(File_Exists, 1)                                                            \
+  V(File_Exists, 2)                                                            \
   V(File_Close, 1)                                                             \
   V(File_ReadByte, 1)                                                          \
   V(File_WriteByte, 2)                                                         \
   V(File_WriteString, 2)                                                       \
   V(File_ReadList, 4)                                                          \
   V(File_WriteList , 4)                                                        \
   V(File_Position, 1)                                                          \
   V(File_Length, 1)                                                            \
   V(File_Flush, 1)                                                             \
   V(EventHandler_Start, 1)                                                     \
@@ skipping 64 matching lines @@
   ASSERT(Dart_IsValid(result));
 
   Dart_Handle coreimpl_lib =
       Dart_LookupLibrary(Dart_NewString("dart:coreimpl"));
   ASSERT(Dart_IsValid(coreimpl_lib));
   result = Dart_LibraryImportLibrary(coreimpl_lib, builtin_lib);
   ASSERT(Dart_IsValid(result));
   result = Dart_LibraryImportLibrary(builtin_lib, coreimpl_lib);
   ASSERT(Dart_IsValid(result));
 
-  // Create a native wrapper "FileNativeWrapper" so that we can add a
-  // native field to store the OS file handle for implementing all the
-  // file operations. The class "File" extends "FileNativeWrapper".
-  Dart_Handle name = Dart_NewString("FileNativeWrapper");
-  const int kNumFileFields = 1;
-  result = Dart_CreateNativeWrapperClass(builtin_lib, name, kNumFileFields);
-  ASSERT(Dart_IsValid(result));
-
   // Create a native wrapper "EventHandlerNativeWrapper" so that we can add a
   // native field to store the event handle for implementing all
   // event operations.
-  name = Dart_NewString("EventHandlerNativeWrapper");
+  Dart_Handle name = Dart_NewString("EventHandlerNativeWrapper");
   const int kNumEventHandlerFields = 1;
   result = Dart_CreateNativeWrapperClass(builtin_lib,
                                          name,
                                          kNumEventHandlerFields);
   ASSERT(Dart_IsValid(result));
 }
 
 
 void Builtin_ImportLibrary(Dart_Handle library) {
   Builtin_LoadLibrary();
 
   Dart_Handle url = Dart_NewString(DartUtils::kBuiltinLibURL);
   Dart_Handle builtin_lib = Dart_LookupLibrary(url);
   ASSERT(Dart_IsValid(builtin_lib));
   Dart_Handle result = Dart_LibraryImportLibrary(library, builtin_lib);
   ASSERT(Dart_IsValid(result));
 }
 
 
 void Builtin_SetNativeResolver() {
   Dart_Handle url = Dart_NewString(DartUtils::kBuiltinLibURL);
   Dart_Handle builtin_lib = Dart_LookupLibrary(url);
   ASSERT(Dart_IsValid(builtin_lib));
   Dart_Handle result = Dart_SetNativeResolver(builtin_lib, native_lookup);
   ASSERT(Dart_IsValid(result));
 }