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https://github.com/pezkuwichain/pezkuwi-subxt.git
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Gav
57 lines
1.7 KiB
Rust
57 lines
1.7 KiB
Rust
// Copyright 2017 Parity Technologies (UK) Ltd.
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// This file is part of Polkadot.
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// Polkadot 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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// Polkadot 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 Polkadot. If not, see <http://www.gnu.org/licenses/>.
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//! Serialiser and prepender.
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use runtime_support::Vec;
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use slicable::Slicable;
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/// Trait to allow itselg to be serialised and prepended by a given slice.
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pub trait KeyedVec {
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fn to_keyed_vec(&self, prepend_key: &[u8]) -> Vec<u8>;
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}
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macro_rules! impl_non_endians {
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( $( $t:ty ),* ) => { $(
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impl KeyedVec for $t {
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fn to_keyed_vec(&self, prepend_key: &[u8]) -> Vec<u8> {
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let mut r = prepend_key.to_vec();
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r.extend_from_slice(&self[..]);
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r
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}
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}
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)* }
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}
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macro_rules! impl_endians {
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( $( $t:ty ),* ) => { $(
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impl KeyedVec for $t {
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fn to_keyed_vec(&self, prepend_key: &[u8]) -> Vec<u8> {
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self.as_slice_then(|slice| {
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let mut r = prepend_key.to_vec();
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r.extend_from_slice(slice);
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r
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})
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}
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}
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)* }
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}
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impl_endians!(u8, i8, u16, u32, u64, usize, i16, i32, i64, isize);
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impl_non_endians!([u8; 1], [u8; 2], [u8; 3], [u8; 4], [u8; 5], [u8; 6], [u8; 7], [u8; 8],
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[u8; 10], [u8; 12], [u8; 14], [u8; 16], [u8; 20], [u8; 24], [u8; 28], [u8; 32], [u8; 40],
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[u8; 48], [u8; 56], [u8; 64], [u8; 80], [u8; 96], [u8; 112], [u8; 128]);
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