initial codec for Stacks addresses

src/chainstate/stacks/address.rs

@@ -0,0 +1,44 @@
+/*
+ copyright: (c) 2013-2019 by Blockstack PBC, a public benefit corporation.
+
+ This file is part of Blockstack.
+
+ Blockstack is free software. You may redistribute or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License or
+ (at your option) any later version.
+
+ Blockstack is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY, including without 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 Blockstack. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+use net::StacksMessageCodec;
+use net::Error as net_error;
+use net::codec::{read_next, write_next};
+
+use chainstate::stacks::StacksAddress;
+
+use util::hash::Hash160;
+
+impl StacksMessageCodec for StacksAddress {
+    fn serialize(&self) -> Vec<u8> {
+        let mut res = vec![];
+        write_next(&mut res, &self.version);
+        write_next(&mut res, &self.bytes.as_bytes().to_vec());
+        res
+    }
+
+    fn deserialize(buf: &Vec<u8>, index: &mut u32, max_size: u32) -> Result<StacksAddress, net_error> {
+        let version : u8    = read_next(buf, index, max_size)?;
+        let bytes : Hash160 = read_next(buf, index, max_size)?;
+        Ok(StacksAddress {
+            version: version,
+            bytes: bytes
+        })
+    }
+}