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// 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/>.
//! The Polkadot runtime. This can be compiled with #[no_std], ready for Wasm.
#![cfg_attr(not(feature = "std"), no_std)]
extern crate polkadot_runtime_std as runtime_std;
#[cfg(feature = "with-std")]
#[macro_use]
extern crate log;
extern crate polkadot_primitives as primitives;
use runtime_std::prelude::*;
use codec::Slicable;
use primitives::relay::{Header, Block, UncheckedTransaction};
/// Execute a block, with `input` being the canonical serialisation of the block. Returns the
/// empty vector.
pub fn execute_block(mut input: &[u8]) -> Vec<u8> {
runtime::system::internal::execute_block(Block::from_slice(&mut input).unwrap());
/// Execute a given, serialised, transaction. Returns the empty vector.
pub fn execute_transaction(mut input: &[u8]) -> Vec<u8> {
let utx = UncheckedTransaction::from_slice(&mut input).unwrap();
let header = runtime::system::internal::execute_transaction(utx, header);
header.to_vec()
/// Execute a given, serialised, transaction. Returns the empty vector.
pub fn finalise_block(mut input: &[u8]) -> Vec<u8> {
let header = Header::from_slice(&mut input).unwrap();
let header = runtime::system::internal::finalise_block(header);
pub fn run_tests(mut input: &[u8]) -> Vec<u8> {
use runtime_std::print;
print("deserialised block.");
let stxs = block.transactions.iter().map(Slicable::to_vec).collect::<Vec<_>>();
print("reserialised transactions.");
[stxs.len() as u8].to_vec()
impl_stubs!(execute_block, execute_transaction, finalise_block, run_tests);