Evaluate expression in context of an object

tools/ddbg.dart

Index: tools/ddbg.dart
===================================================================
--- tools/ddbg.dart	(revision 26326)
+++ tools/ddbg.dart	(working copy)
@@ -38,6 +38,7 @@
   sbp [<file>] <line> Set breakpoint
   rbp <id> Remove breakpoint with given id
   po <id> Print object info for given id
+  eval <id> <expr> Evaluate expr on object id
   pl <id> <idx> [<len>] Print list element/slice
   pc <id> Print class info for given id
   ll  List loaded libraries
@@ -126,6 +127,14 @@
                 "params": { "isolateId" : isolate_id,
                             "libraryId": int.parse(args[1]) } };
     sendCmd(cmd).then((result) => handleGetScriptsResponse(result));
+  } else if (command == "eval" && args.length > 2) {
+    var expr = args.getRange(2, args.length).join(" ");
+    var cmd = { "id": seqNum,
+                "command": "evaluateExpr",
+                "params": { "isolateId": isolate_id,
+                            "objectId": int.parse(args[1]),
+                            "expression": expr } };
+    sendCmd(cmd).then((result) => handleEvalResponse(result));
   } else if (command == "po" && args.length == 2) {
     var cmd = { "id": seqNum,
                 "command": "getObjectProperties",
@@ -368,6 +377,12 @@
 }
 
 
+void handleEvalResponse(response) {
+  Map result = response["result"];
+  print(remoteObject(result));
+}
+
+
 void handleSetBpResponse(response) {
   Map result = response["result"];
   var id = result["breakpointId"];