Add secure sockets to dart:io

runtime/bin/dartutils.h

 // 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.
 
 #ifndef BIN_DARTUTILS_H_
 #define BIN_DARTUTILS_H_
 
 #include "bin/builtin.h"
 #include "bin/utils.h"
 #include "include/dart_api.h"
 #include "platform/globals.h"
 
+/* Handles error handles returned from Dart API functions.  If a value
+ * is an error, uses Dart_PropagateError to throw it to the enclosing
+ * Dart activation.  Otherwise, returns the original handle.
+ *
+ * This function can be used to wrap most API functions, but API
+ * functions can also be nested without this error check, since all
+ * API functions return any error handles passed in as arguments, unchanged.
+ */
+static inline Dart_Handle ThrowIfError(Dart_Handle handle) {
+  if (Dart_IsError(handle)) Dart_PropagateError(handle);
+  return handle;
+}
+
 class CommandLineOptions {
  public:
   explicit CommandLineOptions(int max_count)
       : count_(0), max_count_(max_count), arguments_(NULL) {
     static const int kWordSize = sizeof(intptr_t);
     arguments_ = reinterpret_cast<const char **>(malloc(max_count * kWordSize));
     if (arguments_ == NULL) {
       max_count_ = 0;
     }
   }
@@ skipping 75 matching lines @@
                                 Dart_Handle library,
                                 Dart_Handle url,
                                 Dart_LibraryTag tag,
                                 const char* filename);
   static Dart_Handle PrepareForScriptLoading(const char* package_root,
                                              Dart_Handle builtin_lib);
 
   static bool PostNull(Dart_Port port_id);
   static bool PostInt32(Dart_Port port_id, int32_t value);
 
+  static Dart_Handle GetDartClass(const char* library_url,
+                                  const char* class_name);
   // Create a new Dart OSError object with the current OS error.
   static Dart_Handle NewDartOSError();
   // Create a new Dart OSError object with the provided OS error.
   static Dart_Handle NewDartOSError(OSError* os_error);
+  static Dart_Handle NewDartExceptionWithMessage(const char* library_url,
+                                                 const char* exception_name,
+                                                 const char* message);
+  static Dart_Handle NewDartArgumentError(const char* message);
 
   // Create a new Dart String object from a C String.
   static Dart_Handle NewString(const char* str) {
     ASSERT((str != NULL) && (strlen(str) != 0));
     return Dart_NewStringFromUTF8(reinterpret_cast<const uint8_t*>(str),
                                   strlen(str));
   }
 
   static void SetOriginalWorkingDirectory();
 
@@ skipping 248 matching lines @@
   void* Peer() const { return cobject_->value.as_external_byte_array.peer; }
   Dart_PeerFinalizer Callback() const {
     return cobject_->value.as_external_byte_array.callback;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CObjectExternalUint8Array);
 };
 
 #endif  // BIN_DARTUTILS_H_