Add support for big integers to the native message format

runtime/vm/snapshot.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 "vm/snapshot.h"
 
 #include "platform/assert.h"
 #include "vm/bootstrap.h"
 #include "vm/exceptions.h"
 #include "vm/heap.h"
@@ skipping 555 matching lines @@
       } else {
         WriteIndexedObject(ObjectStore::kFalseValue);
       }
       break;
     case Dart_CObject::kInt32:
       WriteInt32(object);
       break;
     case Dart_CObject::kInt64:
       WriteInt64(object);
       break;
+    case Dart_CObject::kBigint: {
+      // Write out the serialization header value for this object.
+      WriteInlinedHeader(object);
+      // Write out the class and tags information.
+      WriteObjectHeader(ObjectStore::kBigintClass, 0);
+      // Write hex string length and content
+      char* hex_string = object->value.as_bigint;
+      intptr_t len = strlen(hex_string);
+      WriteIntptrValue(len);
+      for (intptr_t i = 0; i < len; i++) {
+        Write<uint8_t>(hex_string[i]);
+      }
+      break;
+    }
     case Dart_CObject::kDouble:
       // Write out the serialization header value for this object.
       WriteInlinedHeader(object);
       // Write out the class and tags information.
       WriteObjectHeader(ObjectStore::kDoubleClass, 0);
       // Write double value.
       Write<double>(object->value.as_double);
       break;
     case Dart_CObject::kString: {
       // Write out the serialization header value for this object.
@@ skipping 253 matching lines @@
 
 
 void SnapshotWriterVisitor::VisitPointers(RawObject** first, RawObject** last) {
   for (RawObject** current = first; current <= last; current++) {
     RawObject* raw_obj = *current;
     writer_->WriteObject(raw_obj);
   }
 }
 
 }  // namespace dart