Support piping log data over the service protocol

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"
 
 namespace dart {
 
 // Translate from the legacy DebugEvent to a ServiceEvent.
 static ServiceEvent::EventKind TranslateEventKind(
@@ skipping 71 matching lines @@
     case kBreakpointResolved:
       return "BreakpointResolved";
     case kBreakpointRemoved:
       return "BreakpointRemoved";
     case kGC:
       return "GC";  // TODO(koda): Change to GarbageCollected.
     case kInspect:
       return "Inspect";
     case kEmbedder:
       return embedder_kind();
+    case kLogging:
+      return "Logging";
     case kDebuggerSettingsUpdate:
       return "_DebuggerSettingsUpdate";
     case kIllegal:
       return "Illegal";
     default:
       UNREACHABLE();
       return "Unknown";
   }
 }
 
@@ skipping 17 matching lines @@
     case kInspect:
     case kDebuggerSettingsUpdate:
       return Service::debug_stream.id();
 
     case kGC:
       return Service::gc_stream.id();
 
     case kEmbedder:
       return embedder_stream_id_;
 
+    case kLogging:
+      return Service::logging_stream.id();
+
     default:
       UNREACHABLE();
       return NULL;
   }
 }
 
 
 void ServiceEvent::PrintJSON(JSONStream* js) const {
   JSONObject jsobj(js);
-  jsobj.AddProperty("type", "Event");
-  jsobj.AddProperty("kind", KindAsCString());
-  jsobj.AddProperty("isolate", isolate());
+  PrintJSONHeader(&jsobj);
   if (kind() == kPauseBreakpoint) {
     JSONArray jsarr(&jsobj, "pauseBreakpoints");
     // TODO(rmacnak): If we are paused at more than one breakpoint,
     // provide it here.
     if (breakpoint() != NULL) {
       jsarr.AddValue(breakpoint());
     }
   } else {
     if (breakpoint() != NULL) {
       jsobj.AddProperty("breakpoint", breakpoint());
@@ skipping 21 matching lines @@
   if (gc_stats() != NULL) {
     jsobj.AddProperty("reason", Heap::GCReasonToString(gc_stats()->reason_));
     isolate()->heap()->PrintToJSONObject(Heap::kNew, &jsobj);
     isolate()->heap()->PrintToJSONObject(Heap::kOld, &jsobj);
   }
   if (bytes() != NULL) {
     jsobj.AddPropertyBase64("bytes", bytes(), bytes_length());
   }
 }
 
+
+void ServiceEvent::PrintJSONHeader(JSONObject* jsobj) const {
+  ASSERT(jsobj != NULL);
+  jsobj->AddProperty("type", "Event");
+  jsobj->AddProperty("kind", KindAsCString());
+  jsobj->AddProperty("isolate", isolate());
+}
+
 }  // namespace dart