1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39

// This file is part of Substrate.

// Copyright (C) 2019-2021 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0

// This program 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.

// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.

//! Macros to derive chain spec extension traits implementation.

mod impls;

use proc_macro::TokenStream;

#[proc_macro_derive(ChainSpecGroup)]
pub fn group_derive(input: TokenStream) -> TokenStream {
	match syn::parse(input) {
		Ok(ast) => impls::group_derive(&ast),
		Err(e) => e.to_compile_error().into(),
	}
}

#[proc_macro_derive(ChainSpecExtension, attributes(forks))]
pub fn extensions_derive(input: TokenStream) -> TokenStream {
	match syn::parse(input) {
		Ok(ast) => impls::extension_derive(&ast),
		Err(e) => e.to_compile_error().into(),
	}
}