Add dart:developer.postEvent for posting events to the service protocol from Dart code

runtime/vm/service_event.cc

 // Copyright (c) 2015, 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 "vm/service_event.h"
 
 #include "vm/message_handler.h"
 
 namespace dart {
 
@@ skipping 117 matching lines @@
     case kInspect:
       return "Inspect";
     case kEmbedder:
       return embedder_kind();
     case kLogging:
       return "_Logging";
     case kDebuggerSettingsUpdate:
       return "_DebuggerSettingsUpdate";
     case kIllegal:
       return "Illegal";
+    case kExtension:
+      return "Extension";
     default:
       UNREACHABLE();
       return "Unknown";
   }
 }
 
 
 const char* ServiceEvent::stream_id() const {
   switch (kind()) {
     case kVMUpdate:
@@ skipping 21 matching lines @@
 
     case kGC:
       return Service::gc_stream.id();
 
     case kEmbedder:
       return embedder_stream_id_;
 
     case kLogging:
       return Service::logging_stream.id();
 
+    case kExtension:
+      return Service::extension_stream.id();
+
     default:
       UNREACHABLE();
       return NULL;
   }
 }
 
 
 void ServiceEvent::PrintJSON(JSONStream* js) const {
   JSONObject jsobj(js);
   PrintJSONHeader(&jsobj);
@@ skipping 45 matching lines @@
     JSONObject logRecord(&jsobj, "logRecord");
     logRecord.AddProperty64("sequenceNumber", log_record_.sequence_number);
     logRecord.AddPropertyTimeMillis("time", log_record_.timestamp);
     logRecord.AddProperty64("level", log_record_.level);
     logRecord.AddProperty("loggerName", *(log_record_.name));
     logRecord.AddProperty("message", *(log_record_.message));
     logRecord.AddProperty("zone", *(log_record_.zone));
     logRecord.AddProperty("error", *(log_record_.error));
     logRecord.AddProperty("stackTrace", *(log_record_.stack_trace));
   }
+  if (kind() == kExtension) {
+    js->AppendSerializedObject("extensionData",
+                               extension_event_.event_data->ToCString());
+  }
 }
 
 
 void ServiceEvent::PrintJSONHeader(JSONObject* jsobj) const {
   ASSERT(jsobj != NULL);
   jsobj->AddProperty("type", "Event");
   jsobj->AddProperty("kind", KindAsCString());
+  if (kind() == kExtension) {
+    ASSERT(extension_event_.event_kind != NULL);
+    jsobj->AddProperty("extensionKind",
+                       extension_event_.event_kind->ToCString());
+  }
   if (kind() == kVMUpdate) {
     jsobj->AddPropertyVM("vm");
   } else {
     jsobj->AddProperty("isolate", isolate());
   }
   ASSERT(timestamp_ != -1);
   jsobj->AddPropertyTimeMillis("timestamp", timestamp_);
 }
 
 }  // namespace dart