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Introduce Metadata type (#974)

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* WIP new Metadata type

* Finish basic Metadata impl inc hashing and validation

* remove caching from metadata; can add that higher up

* remove caches

* update retain to use Metadata

* clippy fixes

* update codegen to use Metadata

* clippy

* WIP fixing subxt lib

* WIP fixing tests, rebuild artifacts, fix OrderedMap::retain

* get --all-targets compiling

* move DispatchError type lookup back to being optional

* cargo clippy

* fix docs

* re-use VariantIndex to get variants

* add docs and enforce docs on metadata crate

* fix docs

* add test and fix docs

* cargo fmt

* address review comments

* update lockfiles

* ExactSizeIter so we can ask for len() of things (and hopefully soon is_empty()
This commit is contained in:
James Wilson
2023-05-25 10:35:21 +01:00
committed by GitHub
parent f344d0dd4d
commit b9f5419095
64 changed files with 6818 additions and 5719 deletions
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codegen/src/api/constants.rs
+10 -13
View File
@@ -3,11 +3,10 @@
// see LICENSE for license details.
use crate::{types::TypeGenerator, CratePath};
use frame_metadata::v15::{PalletMetadata, RuntimeMetadataV15};
use heck::ToSnakeCase as _;
use proc_macro2::TokenStream as TokenStream2;
use quote::{format_ident, quote};
use scale_info::form::PortableForm;
use subxt_metadata::PalletMetadata;
use super::CodegenError;
@@ -35,29 +34,27 @@ use super::CodegenError;
/// - `pallet` - Pallet metadata from which the calls are generated.
/// - `types_mod_ident` - The ident of the base module that we can use to access the generated types from.
pub fn generate_constants(
metadata: &RuntimeMetadataV15,
type_gen: &TypeGenerator,
pallet: &PalletMetadata<PortableForm>,
pallet: &PalletMetadata,
types_mod_ident: &syn::Ident,
crate_path: &CratePath,
should_gen_docs: bool,
) -> Result<TokenStream2, CodegenError> {
// Early return if the pallet has no constants.
if pallet.constants.is_empty() {
if pallet.constants().len() == 0 {
return Ok(quote!());
}
let constants = &pallet.constants;
let constant_fns = constants.iter().map(|constant| {
let fn_name = format_ident!("{}", constant.name.to_snake_case());
let pallet_name = &pallet.name;
let constant_name = &constant.name;
let Ok(constant_hash) = subxt_metadata::get_constant_hash(metadata, pallet_name, constant_name) else {
let constant_fns = pallet.constants().map(|constant| {
let fn_name = format_ident!("{}", constant.name().to_snake_case());
let pallet_name = pallet.name();
let constant_name = constant.name();
let Some(constant_hash) = pallet.constant_hash(constant_name) else {
return Err(CodegenError::MissingConstantMetadata(constant_name.into(), pallet_name.into()));
};
let return_ty = type_gen.resolve_type_path(constant.ty.id);
let docs = &constant.docs;
let return_ty = type_gen.resolve_type_path(constant.ty());
let docs = constant.docs();
let docs = should_gen_docs
.then_some(quote! { #( #[doc = #docs ] )* })
.unwrap_or_default();