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pallet_macro: Generate default documentation for well known types (#8276
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// This file is part of Substrate. | ||
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// Copyright (C) 2020-2021 Parity Technologies (UK) Ltd. | ||
// SPDX-License-Identifier: Apache-2.0 | ||
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// Licensed under the Apache License, Version 2.0 (the "License"); | ||
// you may not use this file except in compliance with the License. | ||
// You may obtain a copy of the License at | ||
// | ||
// http://www.apache.org/licenses/LICENSE-2.0 | ||
// | ||
// Unless required by applicable law or agreed to in writing, software | ||
// distributed under the License is distributed on an "AS IS" BASIS, | ||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
// See the License for the specific language governing permissions and | ||
// limitations under the License. | ||
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use crate::pallet::{Def, parse::helper::get_doc_literals}; | ||
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/// * Generate default rust doc | ||
pub fn expand_config(def: &mut Def) -> proc_macro2::TokenStream { | ||
let config = &def.config; | ||
let config_item = { | ||
let item = &mut def.item.content.as_mut().expect("Checked by def parser").1[config.index]; | ||
if let syn::Item::Trait(item) = item { | ||
item | ||
} else { | ||
unreachable!("Checked by config parser") | ||
} | ||
}; | ||
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if get_doc_literals(&config_item.attrs).is_empty() { | ||
config_item.attrs.push(syn::parse_quote!( | ||
#[doc = r" | ||
Configuration trait of this pallet. | ||
Implement this type for a runtime in order to customize this pallet. | ||
"] | ||
)); | ||
} | ||
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Default::default() | ||
} |
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