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Allow specifying the subxt crate path for generated code (#664)

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* Allow specifying the `subxt` crate path for generated code

* Make `clippy` happy

* Add documentation

* Improve optics

* Remove custom crate path test

* Implement comments

* Update comment

* Make `crate_path` property instead of argument

* Remove unnecessary derives

* Remove `Default` impls in favor of explicit constructors

* Remove unnecessary `into`

* Update codegen/src/types/mod.rs

Co-authored-by: Andrew Jones <ascjones@gmail.com>

Co-authored-by: Andrew Jones <ascjones@gmail.com>
This commit is contained in:
Michael Müller
2022-09-27 12:41:36 +02:00
committed by GitHub
parent 75e383dfcf
commit f115ff975c
15 changed files with 342 additions and 146 deletions
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macro/src/lib.rs
+24 -4
View File
@@ -74,6 +74,16 @@
//! )]
//! pub mod polkadot {}
//! ```
//!
//! ### Custom crate path
//!
//! In order to specify a custom crate path to be used for the code generation:
//!
//! ```ignore
//! #[subxt::subxt(crate = "crate::path::to::subxt")]
//! ```
//!
//! By default the path `::subxt` is used.
#![deny(unused_crate_dependencies)]
@@ -95,6 +105,8 @@ struct RuntimeMetadataArgs {
derive_for_all_types: Option<Punctuated<syn::Path, syn::Token![,]>>,
#[darling(multiple)]
derive_for_type: Vec<DeriveForType>,
#[darling(default, rename = "crate")]
crate_path: Option<String>,
}
#[derive(Debug, FromMeta)]
@@ -118,14 +130,22 @@ pub fn subxt(args: TokenStream, input: TokenStream) -> TokenStream {
let root_path = std::path::Path::new(&root);
let path = root_path.join(args.runtime_metadata_path);
let mut derives_registry = DerivesRegistry::default();
let crate_path = match args.crate_path {
Some(crate_path) => crate_path.into(),
None => subxt_codegen::CratePath::default(),
};
let mut derives_registry = DerivesRegistry::new(&crate_path);
if let Some(derive_for_all) = args.derive_for_all_types {
derives_registry.extend_for_all(derive_for_all.iter().cloned());
}
for derives in &args.derive_for_type {
derives_registry
.extend_for_type(derives.ty.clone(), derives.derive.iter().cloned())
derives_registry.extend_for_type(
derives.ty.clone(),
derives.derive.iter().cloned(),
&crate_path,
)
}
subxt_codegen::generate_runtime_api(item_mod, &path, derives_registry).into()
subxt_codegen::generate_runtime_api(item_mod, &path, derives_registry, crate_path)
.into()
}