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codegen: Fetch and decode metadata version then fallback (#1092)

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* codegen: Fetch and decode metadata version then fallback

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* cli: Add `unstable-metadata` attribute to the subxt macro

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* docs: Add missing comma

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* macro: Add `GenerateRuntimeApi`

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* Update subxt/src/lib.rs

Co-authored-by: James Wilson <james@jsdw.me>

* Update macro/src/lib.rs

Co-authored-by: James Wilson <james@jsdw.me>

* subxt: Adjust docs

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

* cli: Import `GenerateRuntimeApi`

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

---------

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: James Wilson <james@jsdw.me>
This commit is contained in:
Alexandru Vasile
2023-07-25 14:14:18 +03:00
committed by GitHub
parent 44b1690170
commit c6e4c7294d
5 changed files with 198 additions and 130 deletions
Download Patch File Download Diff File Expand all files Collapse all files
macro/src/lib.rs
+28 -21
View File
@@ -9,7 +9,9 @@ use std::str::FromStr;
use darling::{ast::NestedMeta, FromMeta};
use proc_macro::TokenStream;
use proc_macro_error::{abort_call_site, proc_macro_error};
use subxt_codegen::{utils::Uri, CodegenError, DerivesRegistry, TypeSubstitutes};
use subxt_codegen::{
utils::Uri, CodegenError, DerivesRegistry, GenerateRuntimeApi, TypeSubstitutes,
};
use syn::{parse_macro_input, punctuated::Punctuated};
#[derive(Clone, Debug)]
@@ -47,6 +49,8 @@ struct RuntimeMetadataArgs {
no_default_derives: bool,
#[darling(default)]
no_default_substitutions: bool,
#[darling(default)]
unstable_metadata: darling::util::Flag,
}
#[derive(Debug, FromMeta)]
@@ -131,36 +135,39 @@ pub fn subxt(args: TokenStream, input: TokenStream) -> TokenStream {
}
let should_gen_docs = args.generate_docs.is_present();
let unstable_metadata = args.unstable_metadata.is_present();
let runtime_api_generator = GenerateRuntimeApi::new(item_mod, crate_path)
.derives_registry(derives_registry)
.type_substitutes(type_substitutes)
.generate_docs(should_gen_docs)
.runtime_types_only(args.runtime_types_only);
match (args.runtime_metadata_path, args.runtime_metadata_url) {
(Some(rest_of_path), None) => {
if unstable_metadata {
abort_call_site!(
"The 'unstable_metadata' attribute requires `runtime_metadata_url`"
)
}
let root = std::env::var("CARGO_MANIFEST_DIR").unwrap_or_else(|_| ".".into());
let root_path = std::path::Path::new(&root);
let path = root_path.join(rest_of_path);
subxt_codegen::generate_runtime_api_from_path(
item_mod,
path,
derives_registry,
type_substitutes,
crate_path,
should_gen_docs,
args.runtime_types_only,
)
.map_or_else(|err| err.into_compile_error().into(), Into::into)
runtime_api_generator
.generate_from_path(path)
.map_or_else(|err| err.into_compile_error().into(), Into::into)
}
(None, Some(url_string)) => {
let url = Uri::from_str(&url_string).unwrap_or_else(|_| {
abort_call_site!("Cannot download metadata; invalid url: {}", url_string)
});
subxt_codegen::generate_runtime_api_from_url(
item_mod,
&url,
derives_registry,
type_substitutes,
crate_path,
should_gen_docs,
args.runtime_types_only,
)
.map_or_else(|err| err.into_compile_error().into(), Into::into)
runtime_api_generator
.unstable_metadata(unstable_metadata)
.generate_from_url(&url)
.map_or_else(|err| err.into_compile_error().into(), Into::into)
}
(None, None) => {
abort_call_site!(