Add secure sockets to dart:io

runtime/bin/dartutils.cc

Index: runtime/bin/dartutils.cc
diff --git a/runtime/bin/dartutils.cc b/runtime/bin/dartutils.cc
index 757f29d72e25b76281906d20d9b5ea4d15c3e631..f185437479360de525c7ab9d4407920311fe8c6b 100644
--- a/runtime/bin/dartutils.cc
+++ b/runtime/bin/dartutils.cc
@@ -484,6 +484,13 @@ bool DartUtils::PostInt32(Dart_Port port_id, int32_t value) {
 }
 
 
+Dart_Handle DartUtils::GetDartClass(const char* library_url,
+                                    const char* class_name) {
+  return Dart_GetClass(Dart_LookupLibrary(NewString(library_url)),
+                       NewString(class_name));
+}
+
+
 Dart_Handle DartUtils::NewDartOSError() {
   // Extract the current OS error.
   OSError os_error;
@@ -492,22 +499,41 @@ Dart_Handle DartUtils::NewDartOSError() {
 
 
 Dart_Handle DartUtils::NewDartOSError(OSError* os_error) {
-  // Create a Dart OSError object with the information retrieved from the OS.
-  Dart_Handle url = NewString("dart:io");
-  if (Dart_IsError(url)) return url;
-  Dart_Handle lib = Dart_LookupLibrary(url);
-  if (Dart_IsError(lib)) return lib;
-  Dart_Handle class_name = NewString("OSError");
-  if (Dart_IsError(class_name)) return class_name;
-  Dart_Handle clazz = Dart_GetClass(lib, class_name);
-  if (Dart_IsError(clazz)) return clazz;
+  // Create a dart:io OSError object with the information retrieved from the OS.
+  Dart_Handle clazz = GetDartClass(kIOLibURL, "OSError");
   Dart_Handle args[2];
   args[0] = NewString(os_error->message());
-  if (Dart_IsError(args[0])) return args[0];
   args[1] = Dart_NewInteger(os_error->code());
-  if (Dart_IsError(args[1])) return args[1];
-  Dart_Handle err = Dart_New(clazz, Dart_Null(), 2, args);
-  return err;
+  return Dart_New(clazz, Dart_Null(), 2, args);
+}
+
+
+Dart_Handle DartUtils::NewDartSocketIOException(const char* message,
+                                                Dart_Handle os_error) {
+  // Create a dart:io SocketIOException object.
+  Dart_Handle clazz = GetDartClass(kIOLibURL, "SocketIOException");
+  Dart_Handle args[2];
+  args[0] = NewString(message);
+  args[1] = os_error;
+  return Dart_New(clazz, Dart_Null(), 2, args);
+}
+
+
+Dart_Handle DartUtils::NewDartExceptionWithMessage(const char* library_url,
+                                                   const char* exception_name,
+                                                   const char* message) {
+  // Create a Dart Exception object with a message.
+  Dart_Handle clazz = GetDartClass(library_url, exception_name);
+  Dart_Handle args[1];
+  args[0] = NewString(message);
+  return Dart_New(clazz, Dart_Null(), 1, args);
+}
+
+
+Dart_Handle DartUtils::NewDartArgumentError(const char* message) {
+  return NewDartExceptionWithMessage(kCoreLibURL,
+                                     "ArgumentError",
+                                     message);
 }