Reorganising the repository - external renames and moves (#4074)

* Adding first rough ouline of the repository structure * Remove old CI stuff * add title * formatting fixes * move node-exits job's script to scripts dir * Move docs into subdir * move to bin * move maintainence scripts, configs and helpers into its own dir * add .local to ignore * move core->client * start up 'test' area * move test client * move test runtime * make test move compile * Add dependencies rule enforcement. * Fix indexing. * Update docs to reflect latest changes * Moving /srml->/paint * update docs * move client/sr-* -> primitives/ * clean old readme * remove old broken code in rhd * update lock * Step 1. * starting to untangle client * Fix after merge. * start splitting out client interfaces * move children and blockchain interfaces * Move trie and state-machine to primitives. * Fix WASM builds. * fixing broken imports * more interface moves * move backend and light to interfaces * move CallExecutor * move cli off client * moving around more interfaces * re-add consensus crates into the mix * fix subkey path * relieve client from executor * starting to pull out client from grandpa * move is_decendent_of out of client * grandpa still depends on client directly * lemme tests pass * rename srml->paint * Make it compile. * rename interfaces->client-api * Move keyring to primitives. * fixup libp2p dep * fix broken use * allow dependency enforcement to fail * move fork-tree * Moving wasm-builder * make env * move build-script-utils * fixup broken crate depdencies and names * fix imports for authority discovery * fix typo * update cargo.lock * fixing imports * Fix paths and add missing crates * re-add missing crates
2026-06-12 08:51:09 +00:00 · 2019-11-14 21:51:17 +01:00
parent becc3b0a4f
commit 60e5011c72
809 changed files with 7801 additions and 6464 deletions
@@ -0,0 +1,101 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Derive macro implementation of `PassBy` with the associated type set to `Enum`.
+//!
+//! Besides `PassBy`, `TryFrom<u8>` and `From<Self> for u8` are implemented for the type.
+
+use crate::utils::{generate_crate_access, generate_runtime_interface_include};
+
+use syn::{DeriveInput, Result, Data, Fields, Error, Ident};
+
+use quote::quote;
+
+use proc_macro2::{TokenStream, Span};
+
+/// The derive implementation for `PassBy` with `Enum`.
+pub fn derive_impl(input: DeriveInput) -> Result<TokenStream> {
+	let crate_include = generate_runtime_interface_include();
+	let crate_ = generate_crate_access();
+	let ident = input.ident;
+	let enum_fields = get_enum_field_idents(&input.data)?
+		.enumerate()
+		.map(|(i, v)| {
+			let i = i as u8;
+
+			v.map(|v| (quote!(#i => Ok(#ident::#v)), quote!(#ident::#v => #i)))
+		})
+		.collect::<Result<Vec<_>>>()?;
+	let try_from_variants = enum_fields.iter().map(|i| &i.0);
+	let into_variants = enum_fields.iter().map(|i| &i.1);
+
+	let res = quote! {
+		const _: () = {
+			#crate_include
+
+			impl #crate_::pass_by::PassBy for #ident {
+				type PassBy = #crate_::pass_by::Enum<#ident>;
+			}
+
+			impl #crate_::rstd::convert::TryFrom<u8> for #ident {
+				type Error = ();
+
+				fn try_from(inner: u8) -> #crate_::rstd::result::Result<Self, ()> {
+					match inner {
+						#( #try_from_variants, )*
+						_ => Err(()),
+					}
+				}
+			}
+
+			impl From<#ident> for u8 {
+				fn from(var: #ident) -> u8 {
+					match var {
+						#( #into_variants ),*
+					}
+				}
+			}
+		};
+	};
+
+	Ok(res)
+}
+
+/// Get the enum fields idents of the given `data` object as iterator.
+///
+/// Returns an error if the number of variants is greater than `256`, the given `data` is not an
+/// enum or a variant is not an unit.
+fn get_enum_field_idents<'a>(data: &'a Data) -> Result<impl Iterator<Item = Result<&'a Ident>>> {
+	match data {
+		Data::Enum(d) => {
+			if d.variants.len() <= 256 {
+				Ok(
+					d.variants.iter().map(|v| if let Fields::Unit = v.fields {
+						Ok(&v.ident)
+					} else {
+						Err(Error::new(
+							Span::call_site(),
+							"`PassByEnum` only supports unit variants.",
+						))
+					})
+				)
+			} else {
+				Err(Error::new(Span::call_site(), "`PassByEnum` only supports `256` variants."))
+			}
+		},
+		_ => Err(Error::new(Span::call_site(), "`PassByEnum` only supports enums as input type."))
+	}
+}