Introduce basic skeleton for Polkadot runtime. (#32)

* Introduce basic skeleton for Polkador runtime. * Clean up the runtime skeleton. * Make initial runtime skeleton compile. * Compile polkadot-runtime both for Wasm ad native, allowing for testing and direct usage. * More fleshing out on runtime. * Update native support. * Fix warning. * Update gitignore * Update path. * Fix path. * Remove accidentally committed files. * Add wasm binaries. * Fix test. * Native storage support API. * Add environmental module * Add native environment to make native source-code compatible with wasm. Also tests. * Finish up & polish environment stuff. * Avoid using reentrancy issues. * Add some docs and a test. * Remove unneeded function. * Documentation * Tweak docs * Remove TODOs. * Balance transfers + util methods. * Rejig tests and ensure authorities are addressed consistently. * Add marshaller for xfer function * Transaction dispatch test. * Minor fix. * Add test for ser/de transaction. * Add ser/de for header. * Add tests for header ser/de * Introduce basic block decoding/execution framework. * Introduce block decoding/execution framework (p2) * Big refactor. * Split out joiner. * Hide away support modules. * Fix up wasm runtime. * use externalities for chain_id * Clean up (Test)Externalities. * Repot and introduce keccak-256 external. * Signing with crypto. * fix unsafety hole in environmental using function * Introduce Ed25519 crypto. * Repotting. * Add ed25519_verify external. * Introduce Ed25519 verify as an external. * fix unsafety hole around unwinding * Compile fixes. * use new environmental API * Tests for ed25519 verify. * Polish * Introduce UncheckedTransaction & test. * Implement basic block and tx processing * Introduce static hex and valid signature for block test. * Repot session. * comments. * Refactor and timestamp test * Remove fluff * Remove fluff. * Staking eras and tests. * Implement sessions. * Polish * Test sessions. * Introduce better hashing. - Blake2 for secure hashing - XX for fast hashing * Fix tests. * Introduce staking. * Tests for simple staking system. * Build fix for wasm. * Fix tests. * Repotting and docs. * Docs and licence. * Documentation. * Remove superfluous code. * Remove dummy key. * Remove other superfluous file. * Optimise with swap_remove
2026-06-23 17:51:09 +00:00 · 2018-01-23 15:24:17 +01:00
parent 28d84d8ac4
commit 3402f169a7
70 changed files with 3578 additions and 282 deletions
@@ -0,0 +1,88 @@
+// Copyright 2017 Parity Technologies (UK) Ltd.
+// This file is part of Polkadot.
+
+// Polkadot is free software: you can redistribute it and/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.
+
+// Polkadot 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 Polkadot.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Serialisation.
+
+use runtime_support::{Vec, size_of, transmute, uninitialized, slice};
+use joiner::Joiner;
+use endiansensitive::EndianSensitive;
+
+/// Trait that allows zero-copy read/write of value-references to/from slices in LE format.
+pub trait Slicable: Sized {
+	fn from_slice(value: &[u8]) -> Option<Self> {
+		Self::set_as_slice(|out| if value.len() == out.len() {
+			out.copy_from_slice(&value);
+			true
+		} else {
+			false
+		})
+	}
+	fn to_vec(&self) -> Vec<u8> {
+		self.as_slice_then(|s| s.to_vec())
+	}
+	fn set_as_slice<F: FnOnce(&mut[u8]) -> bool>(set_slice: F) -> Option<Self>;
+	fn as_slice_then<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R {
+		f(&self.to_vec())
+	}
+	fn size_of(_value: &[u8]) -> Option<usize>;
+}
+
+/// Trait to mark that a type is not trivially (essentially "in place") serialisable.
+pub trait NonTrivialSlicable: Slicable {}
+
+impl<T: EndianSensitive> Slicable for T {
+	fn set_as_slice<F: FnOnce(&mut[u8]) -> bool>(fill_slice: F) -> Option<Self> {
+		let size = size_of::<T>();
+		let mut result: T = unsafe { uninitialized() };
+		let result_slice = unsafe {
+			slice::from_raw_parts_mut(transmute::<*mut T, *mut u8>(&mut result), size)
+		};
+		if fill_slice(result_slice) {
+			Some(result.from_le())
+		} else {
+			None
+		}
+	}
+	fn as_slice_then<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R {
+		let size = size_of::<Self>();
+		self.as_le_then(|le| {
+			let value_slice = unsafe {
+				slice::from_raw_parts(transmute::<*const Self, *const u8>(le), size)
+			};
+			f(value_slice)
+		})
+	}
+	fn size_of(_value: &[u8]) -> Option<usize> {
+		Some(size_of::<Self>())
+	}
+}
+
+impl Slicable for Vec<u8> {
+	fn from_slice(value: &[u8]) -> Option<Self> {
+		Some(value[4..].to_vec())
+	}
+	fn set_as_slice<F: FnOnce(&mut[u8]) -> bool>(_fill_slice: F) -> Option<Self> {
+		unimplemented!();
+	}
+	fn to_vec(&self) -> Vec<u8> {
+		let mut r: Vec<u8> = Vec::new().join(&(self.len() as u32));
+		r.extend_from_slice(&self);
+		r
+	}
+	fn size_of(data: &[u8]) -> Option<usize> {
+		u32::from_slice(&data[0..4]).map(|i| (i + 4) as usize)
+	}
+}