1 files changed, 52 insertions, 0 deletions
diff --git a/mojo/public/cpp/bindings/lib/message_builder.cc b/mojo/public/cpp/bindings/lib/message_builder.cc
new file mode 100644
index 0000000..c746644
--- /dev/null
+++ b/mojo/public/cpp/bindings/lib/message_builder.cc
@@ -0,0 +1,52 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "mojo/public/cpp/bindings/lib/message_builder.h"
+
+#include "mojo/public/cpp/bindings/message.h"
+
+namespace mojo {
+namespace internal {
+
+template <typename Header>
+void Allocate(Buffer* buf, Header** header) {
+  *header = static_cast<Header*>(buf->Allocate(sizeof(Header)));
+  (*header)->num_bytes = sizeof(Header);
+}
+
+MessageBuilder::MessageBuilder(uint32_t name, size_t payload_size)
+    : buf_(sizeof(MessageHeader) + payload_size) {
+  MessageHeader* header;
+  Allocate(&buf_, &header);
+  header->num_fields = 2;
+  header->name = name;
+}
+
+MessageBuilder::~MessageBuilder() {
+}
+
+void MessageBuilder::Finish(Message* message) {
+  uint32_t num_bytes = static_cast<uint32_t>(buf_.size());
+  message->AdoptData(num_bytes, static_cast<MessageData*>(buf_.Leak()));
+}
+
+MessageBuilder::MessageBuilder(size_t size)
+    : buf_(size) {
+}
+
+MessageWithRequestIDBuilder::MessageWithRequestIDBuilder(uint32_t name,
+                                                         size_t payload_size,
+                                                         uint32_t flags,
+                                                         uint64_t request_id)
+    : MessageBuilder(sizeof(MessageHeaderWithRequestID) + payload_size) {
+  MessageHeaderWithRequestID* header;
+  Allocate(&buf_, &header);
+  header->num_fields = 3;
+  header->name = name;
+  header->flags = flags;
+  header->request_id = request_id;
+}
+
+}  // namespace internal
+}  // namespace mojo