frame_support_procedural/runtime/parse/runtime_struct.rs
1// This file is part of Substrate.
2
3// Copyright (C) Parity Technologies (UK) Ltd.
4// SPDX-License-Identifier: Apache-2.0
5
6// Licensed under the Apache License, Version 2.0 (the "License");
7// you may not use this file except in compliance with the License.
8// You may obtain a copy of the License at
9//
10// http://www.apache.org/licenses/LICENSE-2.0
11//
12// Unless required by applicable law or agreed to in writing, software
13// distributed under the License is distributed on an "AS IS" BASIS,
14// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15// See the License for the specific language governing permissions and
16// limitations under the License.
17
18use syn::spanned::Spanned;
19pub struct RuntimeStructDef {
20 pub ident: syn::Ident,
21}
22
23impl RuntimeStructDef {
24 pub fn try_from(item: &mut syn::Item) -> syn::Result<Self> {
25 let item = if let syn::Item::Struct(item) = item {
26 item
27 } else {
28 let msg = "Invalid runtime::runtime, expected struct definition";
29 return Err(syn::Error::new(item.span(), msg))
30 };
31
32 Ok(Self { ident: item.ident.clone() })
33 }
34}