mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-06-20 10:31:03 +00:00
Sam Johnson
b83bf4784e
* globally upgrade quote to latest 1.0.x (1.0.26) * globally upgrade syn to final 1.0.x version (1.0.109) * globally upgrade proc-macro2 to 1.0.56 * upgrade to syn v2.0.13 and fix everything except NestedMeta * fix parse nested metadata code in decl_runtime_apis.rs * Port more stuff to syn 2.0 * Make the rest compile * Ignore error * update to syn 2.0.14 --------- Co-authored-by: Bastian Köcher <info@kchr.de>
87 lines
2.5 KiB
Rust
87 lines
2.5 KiB
Rust
// This file is part of Substrate.
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// Copyright (C) Parity Technologies (UK) Ltd.
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// SPDX-License-Identifier: Apache-2.0
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use super::helper;
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use syn::spanned::Spanned;
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/// Implementation of the pallet hooks.
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pub struct HooksDef {
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/// The index of item in pallet.
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pub index: usize,
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/// A set of usage of instance, must be check for consistency with trait.
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pub instances: Vec<helper::InstanceUsage>,
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/// The where_clause used.
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pub where_clause: Option<syn::WhereClause>,
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/// The span of the pallet::hooks attribute.
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pub attr_span: proc_macro2::Span,
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/// Boolean flag, set to true if the `on_runtime_upgrade` method of hooks was implemented.
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pub has_runtime_upgrade: bool,
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}
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impl HooksDef {
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pub fn try_from(
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attr_span: proc_macro2::Span,
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index: usize,
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item: &mut syn::Item,
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) -> syn::Result<Self> {
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let item = if let syn::Item::Impl(item) = item {
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item
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} else {
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let msg = "Invalid pallet::hooks, expected item impl";
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return Err(syn::Error::new(item.span(), msg))
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};
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let instances = vec![
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helper::check_pallet_struct_usage(&item.self_ty)?,
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helper::check_impl_gen(&item.generics, item.impl_token.span())?,
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];
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let item_trait = &item
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.trait_
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.as_ref()
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.ok_or_else(|| {
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let msg = "Invalid pallet::hooks, expected impl<..> Hooks \
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for Pallet<..>";
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syn::Error::new(item.span(), msg)
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})?
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.1;
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if item_trait.segments.len() != 1 || item_trait.segments[0].ident != "Hooks" {
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let msg = format!(
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"Invalid pallet::hooks, expected trait to be `Hooks` found `{}`\
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, you can import from `frame_support::pallet_prelude`",
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quote::quote!(#item_trait)
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);
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return Err(syn::Error::new(item_trait.span(), msg))
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}
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let has_runtime_upgrade = item.items.iter().any(|i| match i {
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syn::ImplItem::Fn(method) => method.sig.ident == "on_runtime_upgrade",
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_ => false,
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});
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Ok(Self {
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attr_span,
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index,
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instances,
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has_runtime_upgrade,
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where_clause: item.generics.where_clause.clone(),
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})
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}
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}
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