diff --git a/substrate/frame/support/procedural/src/derive_impl.rs b/substrate/frame/support/procedural/src/derive_impl.rs index 3e044053116b..d6d5bf68efd5 100644 --- a/substrate/frame/support/procedural/src/derive_impl.rs +++ b/substrate/frame/support/procedural/src/derive_impl.rs @@ -136,9 +136,15 @@ fn combine_impls( return None } if let ImplItem::Type(typ) = item.clone() { + let cfg_attrs = typ + .attrs + .iter() + .filter(|attr| attr.path().get_ident().map_or(false, |ident| ident == "cfg")) + .map(|attr| attr.to_token_stream()); if is_runtime_type(&typ) { let item: ImplItem = if inject_runtime_types { parse_quote! { + #( #cfg_attrs )* type #ident = #ident; } } else { @@ -148,6 +154,7 @@ fn combine_impls( } // modify and insert uncolliding type items let modified_item: ImplItem = parse_quote! { + #( #cfg_attrs )* type #ident = <#default_impl_path as #disambiguation_path>::#ident; }; return Some(modified_item) diff --git a/substrate/frame/support/procedural/src/pallet/expand/call.rs b/substrate/frame/support/procedural/src/pallet/expand/call.rs index cf302faafc78..624cde018dc4 100644 --- a/substrate/frame/support/procedural/src/pallet/expand/call.rs +++ b/substrate/frame/support/procedural/src/pallet/expand/call.rs @@ -241,6 +241,15 @@ pub fn expand_call(def: &mut Def) -> proc_macro2::TokenStream { }) .collect::>(); + let cfg_attrs = methods + .iter() + .map(|method| { + let attrs = + method.cfg_attrs.iter().map(|attr| attr.to_token_stream()).collect::>(); + quote::quote!( #( #attrs )* ) + }) + .collect::>(); + let feeless_check = methods.iter().map(|method| &method.feeless_check).collect::>(); let feeless_check_result = feeless_check.iter().zip(args_name.iter()).map(|(feeless_check, arg_name)| { @@ -297,6 +306,7 @@ pub fn expand_call(def: &mut Def) -> proc_macro2::TokenStream { #frame_support::Never, ), #( + #cfg_attrs #[doc = #fn_doc] #[codec(index = #call_index)] #fn_name { @@ -310,6 +320,7 @@ pub fn expand_call(def: &mut Def) -> proc_macro2::TokenStream { impl<#type_impl_gen> #call_ident<#type_use_gen> #where_clause { #( + #cfg_attrs #[doc = #new_call_variant_doc] pub fn #new_call_variant_fn_name( #( #args_name_stripped: #args_type ),* @@ -328,6 +339,7 @@ pub fn expand_call(def: &mut Def) -> proc_macro2::TokenStream { fn get_dispatch_info(&self) -> #frame_support::dispatch::DispatchInfo { match *self { #( + #cfg_attrs Self::#fn_name { #( #args_name_pattern_ref, )* } => { let __pallet_base_weight = #fn_weight; @@ -365,6 +377,7 @@ pub fn expand_call(def: &mut Def) -> proc_macro2::TokenStream { fn is_feeless(&self, origin: &Self::Origin) -> bool { match *self { #( + #cfg_attrs Self::#fn_name { #( #args_name_pattern_ref, )* } => { #feeless_check_result }, @@ -379,13 +392,13 @@ pub fn expand_call(def: &mut Def) -> proc_macro2::TokenStream { { fn get_call_name(&self) -> &'static str { match *self { - #( Self::#fn_name { .. } => stringify!(#fn_name), )* + #( #cfg_attrs Self::#fn_name { .. } => stringify!(#fn_name), )* Self::__Ignore(_, _) => unreachable!("__PhantomItem cannot be used."), } } fn get_call_names() -> &'static [&'static str] { - &[ #( stringify!(#fn_name), )* ] + &[ #( #cfg_attrs stringify!(#fn_name), )* ] } } @@ -394,13 +407,13 @@ pub fn expand_call(def: &mut Def) -> proc_macro2::TokenStream { { fn get_call_index(&self) -> u8 { match *self { - #( Self::#fn_name { .. } => #call_index, )* + #( #cfg_attrs Self::#fn_name { .. } => #call_index, )* Self::__Ignore(_, _) => unreachable!("__PhantomItem cannot be used."), } } fn get_call_indices() -> &'static [u8] { - &[ #( #call_index, )* ] + &[ #( #cfg_attrs #call_index, )* ] } } @@ -416,6 +429,7 @@ pub fn expand_call(def: &mut Def) -> proc_macro2::TokenStream { #frame_support::dispatch_context::run_in_context(|| { match self { #( + #cfg_attrs Self::#fn_name { #( #args_name_pattern, )* } => { #frame_support::__private::sp_tracing::enter_span!( #frame_support::__private::sp_tracing::trace_span!(stringify!(#fn_name)) diff --git a/substrate/frame/support/procedural/src/pallet/expand/error.rs b/substrate/frame/support/procedural/src/pallet/expand/error.rs index 877489fd6057..72fb6e923572 100644 --- a/substrate/frame/support/procedural/src/pallet/expand/error.rs +++ b/substrate/frame/support/procedural/src/pallet/expand/error.rs @@ -16,10 +16,14 @@ // limitations under the License. use crate::{ - pallet::{parse::error::VariantField, Def}, + pallet::{ + parse::error::{VariantDef, VariantField}, + Def, + }, COUNTER, }; use frame_support_procedural_tools::get_doc_literals; +use quote::ToTokens; use syn::spanned::Spanned; /// @@ -67,20 +71,23 @@ pub fn expand_error(def: &mut Def) -> proc_macro2::TokenStream { ) ); - let as_str_matches = error.variants.iter().map(|(variant, field_ty, _)| { - let variant_str = variant.to_string(); - match field_ty { - Some(VariantField { is_named: true }) => { - quote::quote_spanned!(error.attr_span => Self::#variant { .. } => #variant_str,) - }, - Some(VariantField { is_named: false }) => { - quote::quote_spanned!(error.attr_span => Self::#variant(..) => #variant_str,) - }, - None => { - quote::quote_spanned!(error.attr_span => Self::#variant => #variant_str,) - }, - } - }); + let as_str_matches = error.variants.iter().map( + |VariantDef { ident: variant, field: field_ty, docs: _, cfg_attrs }| { + let variant_str = variant.to_string(); + let cfg_attrs = cfg_attrs.iter().map(|attr| attr.to_token_stream()); + match field_ty { + Some(VariantField { is_named: true }) => { + quote::quote_spanned!(error.attr_span => #( #cfg_attrs )* Self::#variant { .. } => #variant_str,) + }, + Some(VariantField { is_named: false }) => { + quote::quote_spanned!(error.attr_span => #( #cfg_attrs )* Self::#variant(..) => #variant_str,) + }, + None => { + quote::quote_spanned!(error.attr_span => #( #cfg_attrs )* Self::#variant => #variant_str,) + }, + } + }, + ); let error_item = { let item = &mut def.item.content.as_mut().expect("Checked by def parser").1[error.index]; diff --git a/substrate/frame/support/procedural/src/pallet/parse/call.rs b/substrate/frame/support/procedural/src/pallet/parse/call.rs index 58e14365e768..4e09b86fddec 100644 --- a/substrate/frame/support/procedural/src/pallet/parse/call.rs +++ b/substrate/frame/support/procedural/src/pallet/parse/call.rs @@ -85,6 +85,8 @@ pub struct CallVariantDef { pub docs: Vec, /// Attributes annotated at the top of the dispatchable function. pub attrs: Vec, + /// The `cfg` attributes. + pub cfg_attrs: Vec, /// The optional `feeless_if` attribute on the `pallet::call`. pub feeless_check: Option, } @@ -266,6 +268,7 @@ impl CallDef { return Err(syn::Error::new(method.sig.span(), msg)) } + let cfg_attrs: Vec = helper::get_item_cfg_attrs(&method.attrs); let mut call_idx_attrs = vec![]; let mut weight_attrs = vec![]; let mut feeless_attrs = vec![]; @@ -442,6 +445,7 @@ impl CallDef { args, docs, attrs: method.attrs.clone(), + cfg_attrs, feeless_check, }); } else { diff --git a/substrate/frame/support/procedural/src/pallet/parse/error.rs b/substrate/frame/support/procedural/src/pallet/parse/error.rs index 6f82ce61fc93..362df8d7340c 100644 --- a/substrate/frame/support/procedural/src/pallet/parse/error.rs +++ b/substrate/frame/support/procedural/src/pallet/parse/error.rs @@ -25,19 +25,31 @@ mod keyword { syn::custom_keyword!(Error); } -/// Records information about the error enum variants. +/// Records information about the error enum variant field. pub struct VariantField { /// Whether or not the field is named, i.e. whether it is a tuple variant or struct variant. pub is_named: bool, } +/// Records information about the error enum variants. +pub struct VariantDef { + /// The variant ident. + pub ident: syn::Ident, + /// The variant field, if any. + pub field: Option, + /// The variant doc literals. + pub docs: Vec, + /// The `cfg` attributes. + pub cfg_attrs: Vec, +} + /// This checks error declaration as a enum declaration with only variants without fields nor /// discriminant. pub struct ErrorDef { /// The index of error item in pallet module. pub index: usize, - /// Variants ident, optional field and doc literals (ordered as declaration order) - pub variants: Vec<(syn::Ident, Option, Vec)>, + /// Variant definitions. + pub variants: Vec, /// A set of usage of instance, must be check for consistency with trait. pub instances: Vec, /// The keyword error used (contains span). @@ -87,8 +99,14 @@ impl ErrorDef { let span = variant.discriminant.as_ref().unwrap().0.span(); return Err(syn::Error::new(span, msg)) } + let cfg_attrs: Vec = helper::get_item_cfg_attrs(&variant.attrs); - Ok((variant.ident.clone(), field_ty, get_doc_literals(&variant.attrs))) + Ok(VariantDef { + ident: variant.ident.clone(), + field: field_ty, + docs: get_doc_literals(&variant.attrs), + cfg_attrs, + }) }) .collect::>()?; diff --git a/substrate/frame/support/test/tests/derive_impl.rs b/substrate/frame/support/test/tests/derive_impl.rs new file mode 100644 index 000000000000..675e85f4bfce --- /dev/null +++ b/substrate/frame/support/test/tests/derive_impl.rs @@ -0,0 +1,52 @@ +// This file is part of Substrate. + +// Copyright (C) Parity Technologies (UK) Ltd. +// SPDX-License-Identifier: Apache-2.0 + +// 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. + +use frame_support::derive_impl; + +trait Shape { + fn area(&self) -> u32; +} + +struct SomeRectangle {} + +#[frame_support::register_default_impl(SomeRectangle)] +impl Shape for SomeRectangle { + #[cfg(not(feature = "feature-frame-testing"))] + fn area(&self) -> u32 { + 10 + } + + #[cfg(feature = "feature-frame-testing")] + fn area(&self) -> u32 { + 0 + } +} + +struct SomeSquare {} + +#[derive_impl(SomeRectangle)] +impl Shape for SomeSquare {} + +#[test] +fn test_feature_parsing() { + let square = SomeSquare {}; + #[cfg(not(feature = "feature-frame-testing"))] + assert_eq!(square.area(), 10); + + #[cfg(feature = "feature-frame-testing")] + assert_eq!(square.area(), 0); +} diff --git a/substrate/frame/support/test/tests/pallet.rs b/substrate/frame/support/test/tests/pallet.rs index d2e5b1851634..0223979d7f0e 100644 --- a/substrate/frame/support/test/tests/pallet.rs +++ b/substrate/frame/support/test/tests/pallet.rs @@ -257,6 +257,13 @@ pub mod pallet { pub fn check_for_dispatch_context(_origin: OriginFor) -> DispatchResult { with_context::<(), _>(|_| ()).ok_or_else(|| DispatchError::Unavailable) } + + #[cfg(feature = "frame-feature-testing")] + #[pallet::call_index(5)] + #[pallet::weight({1})] + pub fn foo_feature_test(_origin: OriginFor) -> DispatchResult { + Ok(()) + } } #[pallet::error] @@ -269,6 +276,8 @@ pub mod pallet { #[codec(skip)] Skipped(u128), CompactU8(#[codec(compact)] u8), + #[cfg(feature = "frame-feature-testing")] + FeatureTest, } #[pallet::event] @@ -796,6 +805,7 @@ fn call_expand() { } ); assert_eq!(call_foo.get_call_name(), "foo"); + #[cfg(not(feature = "frame-feature-testing"))] assert_eq!( pallet::Call::::get_call_names(), &[ @@ -806,9 +816,24 @@ fn call_expand() { "check_for_dispatch_context" ], ); + #[cfg(feature = "frame-feature-testing")] + assert_eq!( + pallet::Call::::get_call_names(), + &[ + "foo", + "foo_storage_layer", + "foo_index_out_of_order", + "foo_no_post_info", + "check_for_dispatch_context", + "foo_feature_test" + ], + ); assert_eq!(call_foo.get_call_index(), 0u8); - assert_eq!(pallet::Call::::get_call_indices(), &[0u8, 1u8, 4u8, 2u8, 3u8]) + #[cfg(not(feature = "frame-feature-testing"))] + assert_eq!(pallet::Call::::get_call_indices(), &[0u8, 1u8, 4u8, 2u8, 3u8]); + #[cfg(feature = "frame-feature-testing")] + assert_eq!(pallet::Call::::get_call_indices(), &[0u8, 1u8, 4u8, 2u8, 3u8, 5u8]); } #[test] @@ -816,7 +841,10 @@ fn call_expand_index() { let call_foo = pallet::Call::::foo_index_out_of_order {}; assert_eq!(call_foo.get_call_index(), 4u8); - assert_eq!(pallet::Call::::get_call_indices(), &[0u8, 1u8, 4u8, 2u8, 3u8]) + #[cfg(not(feature = "frame-feature-testing"))] + assert_eq!(pallet::Call::::get_call_indices(), &[0u8, 1u8, 4u8, 2u8, 3u8]); + #[cfg(feature = "frame-feature-testing")] + assert_eq!(pallet::Call::::get_call_indices(), &[0u8, 1u8, 4u8, 2u8, 3u8, 5u8]); } #[test] @@ -838,6 +866,8 @@ fn error_expand() { }), ); assert_eq!( as PalletError>::MAX_ENCODED_SIZE, 3); + #[cfg(feature = "frame-feature-testing")] + assert_eq!(format!("{:?}", pallet::Error::::FeatureTest), String::from("FeatureTest"),); } #[test] @@ -2379,3 +2409,33 @@ fn test_dispatch_context() { .dispatch(RuntimeOrigin::root())); }); } + +#[test] +fn test_call_feature_parsing() { + let call = pallet::Call::::check_for_dispatch_context {}; + match call { + pallet::Call::::check_for_dispatch_context {} | + pallet::Call::::foo { .. } | + pallet::Call::foo_storage_layer { .. } | + pallet::Call::foo_index_out_of_order {} | + pallet::Call::foo_no_post_info {} => (), + #[cfg(feature = "frame-feature-testing")] + pallet::Call::foo_feature_test {} => (), + pallet::Call::__Ignore(_, _) => (), + } +} + +#[test] +fn test_error_feature_parsing() { + let err = pallet::Error::::InsufficientProposersBalance; + match err { + pallet::Error::InsufficientProposersBalance | + pallet::Error::NonExistentStorageValue | + pallet::Error::Code(_) | + pallet::Error::Skipped(_) | + pallet::Error::CompactU8(_) => (), + #[cfg(feature = "frame-feature-testing")] + pallet::Error::FeatureTest => (), + pallet::Error::__Ignore(_, _) => (), + } +}