Switch Dart_Initialize to use a struct

runtime/vm/dart_api_impl.cc

 // Copyright (c) 2013, 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 "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "lib/stacktrace.h"
@@ skipping 1124 matching lines @@
   return Api::Success();
 }
 
 
 // --- Initialization and Globals ---
 
 DART_EXPORT const char* Dart_VersionString() {
   return Version::String();
 }
 
-DART_EXPORT char* Dart_Initialize(
-    const uint8_t* vm_isolate_snapshot,
-    const uint8_t* instructions_snapshot,
-    const uint8_t* data_snapshot,
-    Dart_IsolateCreateCallback create,
-    Dart_IsolateInterruptCallback interrupt,
-    Dart_IsolateUnhandledExceptionCallback unhandled,
-    Dart_IsolateShutdownCallback shutdown,
-    Dart_ThreadExitCallback thread_exit,
-    Dart_FileOpenCallback file_open,
-    Dart_FileReadCallback file_read,
-    Dart_FileWriteCallback file_write,
-    Dart_FileCloseCallback file_close,
-    Dart_EntropySource entropy_source,
-    Dart_GetVMServiceAssetsArchive get_service_assets) {
-  if (interrupt != NULL) {
+DART_EXPORT char* Dart_Initialize(Dart_InitializeParams* params) {
+  if (params == NULL) {
     return strdup("Dart_Initialize: "
-                  "Setting of interrupt callback is not supported.");
+                  "Dart_InitializeParams is null.");
   }
-  if (unhandled != NULL) {
+
+  if (params->version != DART_INITIALIZE_PARAMS_CURRENT_VERSION) {
     return strdup("Dart_Initialize: "
-                  "Setting of unhandled exception callback is not supported.");
+                  "Invalid Dart_InitializeParams version.");
   }
-  return Dart::InitOnce(vm_isolate_snapshot,
-                        instructions_snapshot,
-                        data_snapshot,
-                        create, shutdown,
-                        thread_exit,
-                        file_open, file_read, file_write, file_close,
-                        entropy_source,
-                        get_service_assets);
+
+  return Dart::InitOnce(params->vm_isolate_snapshot,
+                        params->instructions_snapshot,
+                        params->data_snapshot,
+                        params->create,
+                        params->shutdown,
+                        params->thread_exit,
+                        params->file_open,
+                        params->file_read,
+                        params->file_write,
+                        params->file_close,
+                        params->entropy_source,
+                        params->get_service_assets);
 }
 
 
 DART_EXPORT char* Dart_Cleanup() {
   CHECK_NO_ISOLATE(Isolate::Current());
   const char* err_msg = Dart::Cleanup();
   if (err_msg != NULL) {
     return strdup(err_msg);
   }
   return NULL;
@@ skipping 5376 matching lines @@
 
 DART_EXPORT bool Dart_IsPrecompiledRuntime() {
 #if defined(DART_PRECOMPILED_RUNTIME)
   return true;
 #else
   return false;
 #endif
 }
 
 }  // namespace dart