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Add pallet attribute macro to declare pallets (#6877)
* rename system Config to system Trait.
command used:
```
find frame/ bin/ test-utils/ utils/ -name *.rs -exec sed -i 's/system::Trait>::/system::Config>::/g' {} \;
find frame/ bin/ test-utils/ utils/ -name *.rs -exec sed -i 's/impl frame_system::Trait for /impl frame_system::Config for /g' {} \;
find frame/ bin/ test-utils/ utils/ -name *.rs -exec sed -i 's/impl system::Trait for /impl system::Config for /g' {} \;
```
plus some manual ones especially for frame-support tests and frame-system
* make construct_runtime handle Pallet and Module
pallets can now be implemented on struct named Pallet or Module, both
definition are valid.
This is because next macro will generate only Pallet placeholder.
* introduce pallet attribute macro
currently just with tests, frame_system and other example hasn't been
upgraded
* allow to print some upgrade helper from decl_storage
* Improved error msg, typo.
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
* Improved error msg, typo.
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
* Improved error message on unexpected attributes + ui test
* add test for transactional
* various typo
* some tips when spans are lost
* allow pallet to depend on other pallet instances
* make event type metadata consistent with call and constant
* error messages
* ignore doc example
* fix pallet upgrade template
* fixup
* fix doc
* fix indentation
* Apply suggestions code formatting
Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
* some renames + fix compilation
* remove unsupported genesis config type alias
* merge fixup
* fix ui tests
* additional doc
* implement StorageInstance with new syntax
* fix line width
* fix doc: because pallet doc goes below reexport doc
* Update frame/support/procedural/src/pallet/parse/event.rs
Co-authored-by: Andrew Jones <ascjones@gmail.com>
* Update frame/system/src/lib.rs
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
* Update frame/support/test/tests/pallet_ui.rs
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
* improve doc as suggested
* revert construct_runtime Pallet part.
This revert the changes on construct_runtime. Now construct_runtime is
unchanged and instead pallet macro create a type alias
`type Module<..> = Pallet<..>` to be used by construct_runtime
* refactor with less intricated code
* fix ui test with new image
* fix ui tests
* add minor tests
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
Co-authored-by: Andrew Jones <ascjones@gmail.com>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Guillaume Thiolliere
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GitHub
GitHub
parent
8e3d8a6a09
commit
6dfad0921b
@@ -0,0 +1,138 @@
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// This file is part of Substrate.
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// Copyright (C) 2020 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 crate::pallet::Def;
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use frame_support_procedural_tools::clean_type_string;
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use quote::ToTokens;
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struct ConstDef {
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/// Name of the associated type.
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pub ident: syn::Ident,
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/// The type in Get, e.g. `u32` in `type Foo: Get<u32>;`, but `Self` is replaced by `T`
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pub type_: syn::Type,
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/// The doc associated
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pub doc: Vec<syn::Lit>,
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/// default_byte implementation
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pub default_byte_impl: proc_macro2::TokenStream,
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}
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/// * Impl fn module_constant_metadata for pallet.
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pub fn expand_constants(def: &mut Def) -> proc_macro2::TokenStream {
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let frame_support = &def.frame_support;
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let type_impl_gen = &def.type_impl_generics();
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let type_decl_gen = &def.type_decl_generics();
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let type_use_gen = &def.type_use_generics();
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let pallet_ident = &def.pallet_struct.pallet;
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let mut where_clauses = vec![&def.config.where_clause];
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where_clauses.extend(def.extra_constants.iter().map(|d| &d.where_clause));
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let completed_where_clause = super::merge_where_clauses(&where_clauses);
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let config_consts = def.config.consts_metadata.iter().map(|const_| {
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let ident = &const_.ident;
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let const_type = &const_.type_;
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ConstDef {
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ident: const_.ident.clone(),
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type_: const_.type_.clone(),
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doc: const_.doc.clone(),
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default_byte_impl: quote::quote!(
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let value = <T::#ident as #frame_support::traits::Get<#const_type>>::get();
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#frame_support::codec::Encode::encode(&value)
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),
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}
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});
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let extra_consts = def.extra_constants.iter().flat_map(|d| &d.extra_constants).map(|const_| {
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let ident = &const_.ident;
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ConstDef {
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ident: const_.ident.clone(),
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type_: const_.type_.clone(),
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doc: const_.doc.clone(),
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default_byte_impl: quote::quote!(
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let value = <Pallet<#type_use_gen>>::#ident();
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#frame_support::codec::Encode::encode(&value)
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),
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}
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});
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let consts = config_consts.chain(extra_consts)
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.map(|const_| {
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let const_type = &const_.type_;
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let const_type_str = clean_type_string(&const_type.to_token_stream().to_string());
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let ident = &const_.ident;
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let ident_str = format!("{}", ident);
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let doc = const_.doc.clone().into_iter();
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let default_byte_impl = &const_.default_byte_impl;
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let default_byte_getter = syn::Ident::new(
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&format!("{}DefaultByteGetter", ident),
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ident.span()
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);
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quote::quote!({
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#[allow(non_upper_case_types)]
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#[allow(non_camel_case_types)]
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struct #default_byte_getter<#type_decl_gen>(
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#frame_support::sp_std::marker::PhantomData<(#type_use_gen)>
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);
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impl<#type_impl_gen> #frame_support::dispatch::DefaultByte for
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#default_byte_getter<#type_use_gen>
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#completed_where_clause
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{
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fn default_byte(&self) -> #frame_support::sp_std::vec::Vec<u8> {
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#default_byte_impl
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}
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}
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unsafe impl<#type_impl_gen> Send for #default_byte_getter<#type_use_gen>
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#completed_where_clause
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{}
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unsafe impl<#type_impl_gen> Sync for #default_byte_getter<#type_use_gen>
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#completed_where_clause
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{}
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#frame_support::dispatch::ModuleConstantMetadata {
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name: #frame_support::dispatch::DecodeDifferent::Encode(#ident_str),
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ty: #frame_support::dispatch::DecodeDifferent::Encode(#const_type_str),
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value: #frame_support::dispatch::DecodeDifferent::Encode(
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#frame_support::dispatch::DefaultByteGetter(
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&#default_byte_getter::<#type_use_gen>(
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#frame_support::sp_std::marker::PhantomData
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)
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)
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),
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documentation: #frame_support::dispatch::DecodeDifferent::Encode(
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&[ #( #doc ),* ]
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),
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}
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})
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});
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quote::quote!(
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impl<#type_impl_gen> #pallet_ident<#type_use_gen> #completed_where_clause{
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#[doc(hidden)]
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pub fn module_constants_metadata()
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-> &'static [#frame_support::dispatch::ModuleConstantMetadata]
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{
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&[ #( #consts ),* ]
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}
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}
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)
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}
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