When building standalone Dart executable, put implementation of dart:io natives in a separate libra…

runtime/bin/builtin_natives.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 "bin/builtin.h"
 
 #include <stdlib.h>
 #include <string.h>
 
 #include "bin/dartutils.h"
 #include "include/dart_api.h"
 #include "platform/assert.h"
 
 
-// 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.
+// Lists the native functions implementing basic functionality in
+// standalone dart, such as printing, file I/O, and platform information.
+// Advanced I/O classes like sockets and process management are implemented
+// using functions listed in io_natives.cc.
 #define BUILTIN_NATIVE_LIST(V)                                                 \
-  V(Common_IsBuiltinList, 1)                                                   \
-  V(Crypto_GetRandomBytes, 1)                                                  \
   V(Directory_Exists, 1)                                                       \
   V(Directory_Create, 1)                                                       \
   V(Directory_Current, 0)                                                      \
   V(Directory_CreateTemp, 1)                                                   \
   V(Directory_Delete, 2)                                                       \
   V(Directory_Rename, 2)                                                       \
   V(Directory_NewServicePort, 0)                                               \
-  V(EventHandler_Start, 1)                                                     \
-  V(EventHandler_SendData, 4)                                                  \
   V(Exit, 1)                                                                   \
   V(File_Open, 2)                                                              \
   V(File_Exists, 1)                                                            \
   V(File_Close, 1)                                                             \
   V(File_ReadByte, 1)                                                          \
   V(File_WriteByte, 2)                                                         \
   V(File_ReadList, 4)                                                          \
   V(File_WriteList, 4)                                                         \
   V(File_Position, 1)                                                          \
   V(File_SetPosition, 2)                                                       \
   V(File_Truncate, 2)                                                          \
   V(File_Length, 1)                                                            \
   V(File_LengthFromName, 1)                                                    \
   V(File_LastModified, 1)                                                      \
   V(File_Flush, 1)                                                             \
   V(File_Create, 1)                                                            \
   V(File_Delete, 1)                                                            \
   V(File_Directory, 1)                                                         \
   V(File_FullPath, 1)                                                          \
   V(File_OpenStdio, 1)                                                         \
   V(File_GetStdioHandleType, 1)                                                \
   V(File_NewServicePort, 0)                                                    \
   V(Logger_PrintString, 1)                                                     \
   V(Platform_NumberOfProcessors, 0)                                            \
   V(Platform_OperatingSystem, 0)                                               \
   V(Platform_PathSeparator, 0)                                                 \
   V(Platform_LocalHostname, 0)                                                 \
-  V(Platform_Environment, 0)                                                   \
-  V(Process_Start, 10)                                                         \
-  V(Process_Kill, 3)                                                           \
-  V(ServerSocket_CreateBindListen, 4)                                          \
-  V(ServerSocket_Accept, 2)                                                    \
-  V(Socket_CreateConnect, 3)                                                   \
-  V(Socket_Available, 1)                                                       \
-  V(Socket_Read, 2)                                                            \
-  V(Socket_ReadList, 4)                                                        \
-  V(Socket_WriteList, 4)                                                       \
-  V(Socket_GetPort, 1)                                                         \
-  V(Socket_GetRemotePeer, 1)                                                   \
-  V(Socket_GetError, 1)                                                        \
-  V(Socket_GetStdioHandle, 2)                                                  \
-  V(Socket_NewServicePort, 0)
+  V(Platform_Environment, 0)
 
 
 BUILTIN_NATIVE_LIST(DECLARE_FUNCTION);
 
 static struct NativeEntries {
   const char* name_;
   Dart_NativeFunction function_;
   int argument_count_;
 } BuiltinEntries[] = {
   BUILTIN_NATIVE_LIST(REGISTER_FUNCTION)
 };
 
 
-Dart_NativeFunction Builtin::NativeLookup(Dart_Handle name,
-                                          int argument_count) {
+Dart_NativeFunction Builtin::BuiltinNativeLookup(Dart_Handle name,
+                                                 int argument_count) {
   const char* function_name = NULL;
   Dart_Handle result = Dart_StringToCString(name, &function_name);
   DART_CHECK_VALID(result);
   ASSERT(function_name != NULL);
   int num_entries = sizeof(BuiltinEntries) / sizeof(struct NativeEntries);
   for (int i = 0; i < num_entries; i++) {
     struct NativeEntries* entry = &(BuiltinEntries[i]);
     if (!strcmp(function_name, entry->name_) &&
         (entry->argument_count_ == argument_count)) {
       return reinterpret_cast<Dart_NativeFunction>(entry->function_);
@@ skipping 32 matching lines @@
 
 
 void FUNCTION_NAME(Exit)(Dart_NativeArguments args) {
   Dart_EnterScope();
   int64_t status = 0;
   // Ignore result if passing invalid argument and just exit 0.
   DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 0), &status);
   Dart_ExitScope();
   exit(status);
 }