Start implementing a cas in separate crates.

cas-core/src/lib.rs

@@ -0,0 +1,44 @@
+// This file is part of bsv.
+//
+// bsv is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// cdb 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 Affero General Public License for
+// more details.
+//
+// You should have received a copy of the Affero GNU General Public License
+// along with cdb.  If not, see <https://www.gnu.org/licenses/>.
+
+//! # cas-core
+//!
+//! `cas-core` provides traits and types to interface with content-addressable
+//! storage.
+
+#![feature(inherent_ascii_escape)]
+
+
+extern crate thiserror;
+extern crate digest;
+
+
+mod error;
+mod object_id;
+mod object_type;
+mod object_metadata;
+mod pipeline;
+mod cas;
+
+
+pub use crate::{
+    error::{Error, Result},
+    object_id::{ObjectId, hex, write_hex},
+    object_type::{ObjectType},
+    object_metadata::{ObjectMetadata},
+    pipeline::{Pipeline, DefaultPipeline},
+    cas::{Cas},
+};
+