mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-08 14:48:01 +00:00
Kian Paimani
64 lines
2.6 KiB
Rust
64 lines
2.6 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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//! This crate provides procedural macros for usage within the context of the Substrate runtime
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//! interface.
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//!
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//! The following macros are provided:
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//!
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//! 1. The [`#[runtime_interface]`](attr.runtime_interface.html) attribute macro for generating the
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//! runtime interfaces.
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//! 2. The [`PassByCodec`](derive.PassByCodec.html) derive macro for implementing `PassBy` with `Codec`.
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//! 3. The [`PassByEnum`](derive.PassByInner.html) derive macro for implementing `PassBy` with `Enum`.
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//! 4. The [`PassByInner`](derive.PassByInner.html) derive macro for implementing `PassBy` with `Inner`.
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use syn::{parse_macro_input, ItemTrait, DeriveInput};
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mod pass_by;
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mod runtime_interface;
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mod utils;
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#[proc_macro_attribute]
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pub fn runtime_interface(
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attrs: proc_macro::TokenStream,
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input: proc_macro::TokenStream,
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) -> proc_macro::TokenStream {
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let trait_def = parse_macro_input!(input as ItemTrait);
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let wasm_only = parse_macro_input!(attrs as Option<runtime_interface::keywords::wasm_only>);
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runtime_interface::runtime_interface_impl(trait_def, wasm_only.is_some())
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.unwrap_or_else(|e| e.to_compile_error())
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.into()
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}
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#[proc_macro_derive(PassByCodec)]
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pub fn pass_by_codec(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
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let input = parse_macro_input!(input as DeriveInput);
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pass_by::codec_derive_impl(input).unwrap_or_else(|e| e.to_compile_error()).into()
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}
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#[proc_macro_derive(PassByInner)]
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pub fn pass_by_inner(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
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let input = parse_macro_input!(input as DeriveInput);
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pass_by::inner_derive_impl(input).unwrap_or_else(|e| e.to_compile_error()).into()
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}
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#[proc_macro_derive(PassByEnum)]
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pub fn pass_by_enum(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
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let input = parse_macro_input!(input as DeriveInput);
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pass_by::enum_derive_impl(input).unwrap_or_else(|e| e.to_compile_error()).into()
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}
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