mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-27 23:18:01 +00:00
Gav Wood
65 lines
2.0 KiB
Rust
65 lines
2.0 KiB
Rust
// Copyright 2017-2018 Parity Technologies (UK) Ltd.
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// This file is part of Substrate.
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// Substrate is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Substrate is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
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// tag::description[]
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//! Generic implementations of Extrinsic/Header/Block.
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// end::description[]
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mod unchecked_extrinsic;
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mod unchecked_mortal_extrinsic;
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mod unchecked_mortal_compact_extrinsic;
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mod era;
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mod checked_extrinsic;
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mod header;
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mod block;
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mod digest;
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#[cfg(test)]
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mod tests;
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pub use self::unchecked_extrinsic::UncheckedExtrinsic;
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pub use self::unchecked_mortal_extrinsic::UncheckedMortalExtrinsic;
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pub use self::unchecked_mortal_compact_extrinsic::UncheckedMortalCompactExtrinsic;
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pub use self::era::Era;
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pub use self::checked_extrinsic::CheckedExtrinsic;
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pub use self::header::Header;
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pub use self::block::{Block, SignedBlock, BlockId};
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pub use self::digest::{Digest, DigestItem, DigestItemRef};
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use codec::Encode;
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use rstd::prelude::*;
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fn encode_with_vec_prefix<T: Encode, F: Fn(&mut Vec<u8>)>(encoder: F) -> Vec<u8> {
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let size = ::rstd::mem::size_of::<T>();
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let reserve = match size {
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0...0b00111111 => 1,
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0...0b00111111_11111111 => 2,
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_ => 4,
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};
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let mut v = Vec::with_capacity(reserve + size);
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v.resize(reserve, 0);
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encoder(&mut v);
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// need to prefix with the total length to ensure it's binary comptible with
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// Vec<u8>.
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let mut length: Vec<()> = Vec::new();
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length.resize(v.len() - reserve, ());
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length.using_encoded(|s| {
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v.splice(0..reserve, s.iter().cloned());
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});
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v
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}
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