Metadata V15: Expose types for the overarching Call, Event, Error enums

bin/node/runtime/src/lib.rs

@@ -19,8 +19,8 @@
 //! The Substrate runtime. This can be compiled with `#[no_std]`, ready for Wasm.
 
 #![cfg_attr(not(feature = "std"), no_std)]
-// `construct_runtime!` does a lot of recursion and requires us to increase the limit to 512.
-#![recursion_limit = "512"]
+// `construct_runtime!` does a lot of recursion and requires us to increase the limits.
+#![recursion_limit = "1024"]
 
 use codec::{Decode, Encode, MaxEncodedLen};
 use frame_election_provider_support::{

frame/support/Cargo.toml

@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 serde = { version = "1.0.163", default-features = false, features = ["alloc", "derive"] }
 codec = { package = "parity-scale-codec", version = "3.6.1", default-features = false, features = ["derive", "max-encoded-len"] }
 scale-info = { version = "2.5.0", default-features = false, features = ["derive"] }
-frame-metadata = { version = "15.1.0", default-features = false, features = ["v14", "v15-unstable"] }
+frame-metadata = { version = "15.2.0", default-features = false, features = ["unstable"] }
 sp-api = { version = "4.0.0-dev", default-features = false, path = "../../primitives/api" }
 sp-std = { version = "8.0.0", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "23.0.0", default-features = false, path = "../../primitives/io" }

frame/support/procedural/src/construct_runtime/expand/metadata.rs

@@ -15,7 +15,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License
 
-use crate::construct_runtime::Pallet;
+use crate::construct_runtime::{parse::PalletPath, Pallet};
 use proc_macro2::TokenStream;
 use quote::quote;
 use std::str::FromStr;
@@ -26,6 +26,7 @@ pub fn expand_runtime_metadata(
 	pallet_declarations: &[Pallet],
 	scrate: &TokenStream,
 	extrinsic: &TypePath,
+	system_path: &PalletPath,
 ) -> TokenStream {
 	let pallets = pallet_declarations
 		.iter()
@@ -115,6 +116,13 @@ pub fn expand_runtime_metadata(
 					},
 					ty: #scrate::scale_info::meta_type::<#runtime>(),
 					apis: (&rt).runtime_metadata(),
+					outer_enums: #scrate::metadata_ir::OuterEnumsIR {
+						call_enum_ty: #scrate::scale_info::meta_type::<
+								<#runtime as #system_path::Config>::RuntimeCall
+							>(),
+						event_enum_ty: #scrate::scale_info::meta_type::<RuntimeEvent>(),
+						error_enum_ty: #scrate::scale_info::meta_type::<RuntimeError>(),
+					}
 				}
 			}
 

frame/support/procedural/src/construct_runtime/expand/mod.rs

@@ -17,24 +17,24 @@
 
 mod call;
 mod config;
-mod event;
 mod freeze_reason;
 mod hold_reason;
 mod inherent;
 mod lock_id;
 mod metadata;
 mod origin;
+mod outer_enums;
 mod slash_reason;
 mod unsigned;
 
 pub use call::expand_outer_dispatch;
 pub use config::expand_outer_config;
-pub use event::expand_outer_event;
 pub use freeze_reason::expand_outer_freeze_reason;
 pub use hold_reason::expand_outer_hold_reason;
 pub use inherent::expand_outer_inherent;
 pub use lock_id::expand_outer_lock_id;
 pub use metadata::expand_runtime_metadata;
 pub use origin::expand_outer_origin;
+pub use outer_enums::{expand_outer_enum, OuterEnumType};
 pub use slash_reason::expand_outer_slash_reason;
 pub use unsigned::expand_outer_validate_unsigned;