Runtime version (#256)

* Runtime version

* Updated genesis.wasm

* Minor fixes

* Fresh runtime

* Default version for pre Poc-2; Fixed authorship interface check

* Fixed authoring check

substrate/substrate/codec/src/lib.rs

@@ -38,6 +38,6 @@ mod slicable;
 mod joiner;
 mod keyedvec;
 
-pub use self::slicable::{Input, Slicable};
+pub use self::slicable::{Input, Slicable, encode_slice};
 pub use self::joiner::Joiner;
 pub use self::keyedvec::KeyedVec;

substrate/substrate/codec/src/slicable.rs

@@ -63,6 +63,16 @@ pub trait Slicable: Sized {
 	}
 }
 
+/// Encode a bytes slice as `Slicable` that can be decoded into a vector.
+pub fn encode_slice(bytes: &[u8]) -> Vec<u8> {
+	let len = bytes.len();
+	assert!(len <= u32::max_value() as usize, "Attempted to serialize a collection with too many elements.");
+
+	let mut r: Vec<u8> = Vec::new().and(&(len as u32));
+	r.extend_from_slice(bytes);
+	r
+}
+
 impl<T: Slicable, E: Slicable> Slicable for Result<T, E> {
 	fn decode<I: Input>(input: &mut I) -> Option<Self> {
 		match input.read_byte()? {
@@ -182,12 +192,7 @@ impl Slicable for Vec<u8> {
 	}
 
 	fn encode(&self) -> Vec<u8> {
-		let len = self.len();
-		assert!(len <= u32::max_value() as usize, "Attempted to serialize vec with too many elements.");
-
-		let mut r: Vec<u8> = Vec::new().and(&(len as u32));
-		r.extend_from_slice(self);
-		r
+		encode_slice(&self)
 	}
 }