Added API Dart_PostCMessage for posting a Dart_CMessage structure

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 707 matching lines @@
 
   // Write out the individual Smis.
   for (int i = 0; i < field_count; i++) {
     Write<RawObject*>(Integer::New(data[i]));
   }
 
   FinalizeBuffer();
 }
 
 
+void MessageWriter::WriteSmi(int32_t value) {
+  Write<RawObject*>(Smi::New(value));
+}
+
+
+void MessageWriter::WriteCObject(Dart_CObject* object) {
+  switch (object->type) {
+    case Dart_CObject::kNull:
+      WriteIndexedObject(Object::kNullObject);
+      break;
+    case Dart_CObject::kBool:
+      if (object->value.as_bool) {
+        WriteIndexedObject(ObjectStore::kTrueValue);
+      } else {
+        WriteIndexedObject(ObjectStore::kFalseValue);
+      }
+      break;
+    case Dart_CObject::kInt32: {
+      WriteSmi(object->value.as_int32);
+      break;
+    }
+    case Dart_CObject::kDouble:
+      // Write out the serialization header value for this object.
+      WriteSerializationMarker(kInlined, kMaxPredefinedObjectIds + object_id_);
+      object_id_++;
+      // Write out the class and tags information.
+      WriteObjectHeader(ObjectStore::kDoubleClass, 0);
+      Write<double>(object->value.as_double);
+      break;
+    case Dart_CObject::kString: {
+      // Write out the serialization header value for this object.
+      WriteSerializationMarker(kInlined, kMaxPredefinedObjectIds + object_id_);
+      object_id_++;
+      char* str = object->value.as_string;
+      intptr_t len = strlen(str);
+      // Write out the class and tags information.
+      WriteObjectHeader(ObjectStore::kOneByteStringClass, 0);
+      WriteSmi(len);
+      WriteSmi(0);  // Hash - not written.
+      for (intptr_t i = 0; i < len; i++) {
+        Write<uint8_t>(str[i]);
+      }
+      break;
+    }
+    case Dart_CObject::kArray:
+      // Write out the serialization header value for this object.
+      WriteSerializationMarker(kInlined, kMaxPredefinedObjectIds + object_id_);
+      object_id_++;
+      // Write out the class and tags information.
+      WriteObjectHeader(ObjectStore::kArrayClass, 0);
+      WriteSmi(object->value.as_array.length);
+      // Write out the type arguments.
+      WriteIndexedObject(Object::kNullObject);
+      for (int i = 0; i < object->value.as_array.length; i++) {
+        WriteCObject(object->value.as_array.values[i]);
+      }
+      break;
+    default:
+      UNREACHABLE();
+  }
+}
+
+
+void MessageWriter::WriteCMessage(Dart_CObject* object) {
+  WriteCObject(object);
+  FinalizeBuffer();
+}
+
+
 void SnapshotWriter::WriteObject(RawObject* rawobj) {
   // An object is written in one of the following ways:
   // - Smi: the Smi value is written as is (last bit is not tagged).
   // - VM internal class (from VM isolate): (index of class in vm isolate | 0x3)
   // - Object that has already been written: (negative id in stream | 0x3)
   // - Object that is seen for the first time (inlined as follows):
   //    (object size in multiples of kObjectAlignment | 0x1)
   //    serialized fields of the object
   //    ......
 
@@ skipping 190 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