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Decouple Stkaing and Election - Part1: Support traits (#7908)

Browse Source 
* Base features and traits.

* Fix the build

* Remove unused boxing

* Self review cleanup

* Fix build
This commit is contained in:
Kian Paimani
2021-01-18 10:24:12 +00:00
committed by GitHub
parent c58a2d9a74
commit ced107b355
23 changed files with 925 additions and 341 deletions
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substrate/primitives/npos-elections/compact/src/assignment.rs
+2 -52
View File
@@ -21,7 +21,7 @@ use crate::field_name_for;
use proc_macro2::TokenStream as TokenStream2;
use quote::quote;
fn from_impl(count: usize) -> TokenStream2 {
pub(crate) fn from_impl(count: usize) -> TokenStream2 {
let from_impl_single = {
let name = field_name_for(1);
quote!(1 => compact.#name.push(
@@ -73,7 +73,7 @@ fn from_impl(count: usize) -> TokenStream2 {
)
}
fn into_impl(count: usize, per_thing: syn::Type) -> TokenStream2 {
pub(crate) fn into_impl(count: usize, per_thing: syn::Type) -> TokenStream2 {
let into_impl_single = {
let name = field_name_for(1);
quote!(
@@ -153,53 +153,3 @@ fn into_impl(count: usize, per_thing: syn::Type) -> TokenStream2 {
#into_impl_rest
)
}
pub(crate) fn assignment(
ident: syn::Ident,
voter_type: syn::Type,
target_type: syn::Type,
weight_type: syn::Type,
count: usize,
) -> TokenStream2 {
let from_impl = from_impl(count);
let into_impl = into_impl(count, weight_type.clone());
quote!(
use _npos::__OrInvalidIndex;
impl #ident {
pub fn from_assignment<FV, FT, A>(
assignments: Vec<_npos::Assignment<A, #weight_type>>,
index_of_voter: FV,
index_of_target: FT,
) -> Result<Self, _npos::Error>
where
A: _npos::IdentifierT,
for<'r> FV: Fn(&'r A) -> Option<#voter_type>,
for<'r> FT: Fn(&'r A) -> Option<#target_type>,
{
let mut compact: #ident = Default::default();
for _npos::Assignment { who, distribution } in assignments {
match distribution.len() {
0 => continue,
#from_impl
_ => {
return Err(_npos::Error::CompactTargetOverflow);
}
}
};
Ok(compact)
}
pub fn into_assignment<A: _npos::IdentifierT>(
self,
voter_at: impl Fn(#voter_type) -> Option<A>,
target_at: impl Fn(#target_type) -> Option<A>,
) -> Result<Vec<_npos::Assignment<A, #weight_type>>, _npos::Error> {
let mut assignments: Vec<_npos::Assignment<A, #weight_type>> = Default::default();
#into_impl
Ok(assignments)
}
}
)
}