Evaluate expression in context of an object

runtime/bin/dbg_connection.cc

 // 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.
 
 #include "bin/dbg_connection.h"
 #include "bin/dbg_message.h"
 #include "bin/dartutils.h"
 #include "bin/log.h"
 #include "bin/socket.h"
 #include "bin/thread.h"
@@ skipping 242 matching lines @@
       msgbuf_->PopMessage();
     }
   }
 }
 
 
 void DebuggerConnectionHandler::SendError(int debug_fd,
                                           int msg_id,
                                           const char* err_msg) {
   dart::TextBuffer msg(64);
-  msg.Printf("{\"id\": %d, \"error\": \"Error: %s\"}", msg_id, err_msg);
+  msg.Printf("{\"id\": %d, \"error\": \"Error: ", msg_id);
+  msg.AddEscapedString(err_msg);
+  msg.Printf("\"}");
   SendMsg(debug_fd, &msg);
 }
 
 
 void DebuggerConnectionHandler::CloseDbgConnection() {
   if (debug_fd_ >= 0) {
     Socket::Close(debug_fd_);
   }
   if (msgbuf_ != NULL) {
     delete msgbuf_;
@@ skipping 181 matching lines @@
 
 
 bool DebuggerConnectionHandler::IsConnected() {
   // TODO(asiva): Support multiple debugger connections.
   // Return true if a connection has been established.
   return singleton_handler != NULL;
 }
 
 }  // namespace bin
 }  // namespace dart