Checkpoint. Reorganizing ccnb parsing into many small files.
diff --git a/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc b/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc
new file mode 100644
index 0000000..81d137f
--- /dev/null
+++ b/helper/ccnb-parser/syntax-tree/ccnb-parser-block.cc
@@ -0,0 +1,69 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2011 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#include "ccnb-parser-block.h"
+#include "ns3/ccnb-parser-common.h"
+
+namespace ns3 {
+namespace CcnbParser {
+
+const uint8_t CCN_TT_BITS = 3;
+const uint8_t CCN_TT_MASK = ((1 << CCN_TT_BITS) - 1);
+const uint8_t CCN_MAX_TINY= ((1 << (7-CCN_TT_BITS)) - 1);
+const uint8_t CCN_TT_HBIT = ((uint8_t)(1 << 7));
+
+Ptr<Block> Block::ParseBlock (Buffer::Iterator &start)
+{
+ uint32_t value = 0;
+
+ // We will have problems if length field is more than 32 bits. Though it's really impossible
+ uint8_t byte = 0;
+ while (!(byte & CCN_TT_HBIT))
+ {
+ value <<= 8;
+ value += byte;
+ byte = start.ReadU8 ();
+ }
+ value <<= 4;
+ value += ( (byte&(~CCN_TT_HBIT)) >> 3);
+
+ switch (byte & CCN_TT_MASK)
+ {
+ case CCN_BLOB:
+ return Create<Blob> (start, value);
+ case CCN_UDATA:
+ return Create<Udata> (start, value);
+ case CCN_TAG:
+ return Create<Tag> (start, value);
+ case CCN_ATTR:
+ return Create<Attr> (start, value);
+ case CCN_DTAG:
+ return Create<Dtag> (start, value);
+ case CCN_DATTR:
+ return Create<Dattr> (start, value);
+ case CCN_EXT:
+ return Create<Ext> (start, value);
+ default:
+ throw CcnxDecodingException ();
+ }
+}
+
+}
+}