mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-26 11:07:56 +00:00
Kian Paimani
43 lines
1.4 KiB
Rust
43 lines
1.4 KiB
Rust
// Copyright 2019-2020 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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//! Macros to derive runtime debug implementation.
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//!
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//! This custom derive implements a `core::fmt::Debug` trait,
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//! but in case the `std` feature is enabled the implementation
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//! will actually print out the structure as regular `derive(Debug)`
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//! would do. If `std` is disabled the implementation will be empty.
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//!
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//! This behaviour is useful to prevent bloating the runtime WASM
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//! blob from unneeded code.
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//!
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//! ```rust
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//! #[derive(sp_debug_derive::RuntimeDebug)]
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//! struct MyStruct;
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//!
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//! assert_eq!(format!("{:?}", MyStruct), "MyStruct");
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//! ```
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mod impls;
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use proc_macro::TokenStream;
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#[proc_macro_derive(RuntimeDebug)]
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pub fn debug_derive(input: TokenStream) -> TokenStream {
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impls::debug_derive(syn::parse_macro_input!(input))
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}
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