Begin migrating the vm service from a rest-style interface to a json-rpc style interface.

runtime/vm/json_stream.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 "platform/assert.h"
 
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/json_stream.h"
 #include "vm/message.h"
@@ skipping 55 matching lines @@
       string_iterator ^= option_values.At(i);
       option_values_native[i] =
           zone->MakeCopyOfString(string_iterator.ToCString());
     }
     SetOptions(option_keys_native, option_values_native, option_keys.Length());
   }
   if (FLAG_trace_service) {
     Isolate* isolate = Isolate::Current();
     ASSERT(isolate != NULL);
     const char* isolate_name = isolate->name();
-    OS::Print("Isolate %s processing service request /%s",
+    OS::Print("Isolate %s processing service request %s",
               isolate_name, command_);
     for (intptr_t i = 1; i < num_arguments(); i++) {
       OS::Print("/%s", GetArgument(i));
+    }
+    OS::Print("\n");
+    setup_time_micros_ = OS::GetCurrentTimeMicros();
+  }
+}
+
+
+void JSONStream::SetupNew(Zone* zone,
+                          Dart_Port reply_port,
+                          const String& method,
+                          const Array& option_keys,
+                          const Array& option_values) {
+  set_reply_port(reply_port);
+  command_ = method.ToCString();
+
+  String& string_iterator = String::Handle();
+  if (option_keys.Length() > 0) {
+    const char** option_keys_native =
+        zone->Alloc<const char*>(option_keys.Length());
+    const char** option_values_native =
+        zone->Alloc<const char*>(option_keys.Length());
+    for (intptr_t i = 0; i < option_keys.Length(); i++) {
+      string_iterator ^= option_keys.At(i);
+      option_keys_native[i] =
+          zone->MakeCopyOfString(string_iterator.ToCString());
+      string_iterator ^= option_values.At(i);
+      option_values_native[i] =
+          zone->MakeCopyOfString(string_iterator.ToCString());
+    }
+    SetOptions(option_keys_native, option_values_native, option_keys.Length());
+  }
+  if (FLAG_trace_service) {
+    Isolate* isolate = Isolate::Current();
+    ASSERT(isolate != NULL);
+    const char* isolate_name = isolate->name();
+    OS::Print("Isolate %s processing service request %s",
+              isolate_name, command_);
+    for (intptr_t i = 1; i < num_arguments(); i++) {
+      OS::Print("/%s", GetArgument(i));
     }
     OS::Print("\n");
     setup_time_micros_ = OS::GetCurrentTimeMicros();
   }
 }
 
 
 static uint8_t* allocator(uint8_t* ptr, intptr_t old_size, intptr_t new_size) {
   void* new_ptr = realloc(reinterpret_cast<void*>(ptr), new_size);
   return reinterpret_cast<uint8_t*>(new_ptr);
@@ skipping 14 matching lines @@
   uint8_t* data = NULL;
   MessageWriter writer(&data, &allocator, false);
   writer.WriteMessage(reply);
   PortMap::PostMessage(new Message(port, data,
                                    writer.BytesWritten(),
                                    Message::kNormalPriority));
   if (FLAG_trace_service) {
     Isolate* isolate = Isolate::Current();
     ASSERT(isolate != NULL);
     const char* isolate_name = isolate->name();
-    OS::Print("Isolate %s processed service request /%s",
+    OS::Print("Isolate %s processed service request %s",
               isolate_name, command_);
     for (intptr_t i = 1; i < num_arguments(); i++) {
       OS::Print("/%s", GetArgument(i));
     }
     OS::Print(" in %" Pd64" us.\n", process_delta_micros);
   }
 }
 
 
 const char* JSONStream::LookupOption(const char* key) const {
@@ skipping 382 matching lines @@
   intptr_t len2 = OS::VSNPrint(p, len+1, format, args);
   va_end(args);
   ASSERT(len == len2);
   stream_->buffer_.AddChar('"');
   stream_->AddEscapedUTF8String(p);
   stream_->buffer_.AddChar('"');
   free(p);
 }
 
 }  // namespace dart