[xcm] runtime api for LocationToAccount conversions

Cargo.toml

@@ -227,6 +227,7 @@ members = [
 	"polkadot/xcm/xcm-executor",
 	"polkadot/xcm/xcm-executor/integration-tests",
 	"polkadot/xcm/xcm-fee-payment-runtime-api",
+	"polkadot/xcm/xcm-runtime-api",
 	"polkadot/xcm/xcm-simulator",
 	"polkadot/xcm/xcm-simulator/example",
 	"polkadot/xcm/xcm-simulator/fuzzer",
@@ -1338,6 +1339,7 @@ xcm-emulator = { path = "cumulus/xcm/xcm-emulator", default-features = false }
 xcm-executor = { path = "polkadot/xcm/xcm-executor", default-features = false, package = "staging-xcm-executor" }
 xcm-fee-payment-runtime-api = { path = "polkadot/xcm/xcm-fee-payment-runtime-api", default-features = false }
 xcm-procedural = { path = "polkadot/xcm/procedural", default-features = false }
+xcm-runtime-api = { path = "polkadot/xcm/xcm-runtime-api", default-features = false }
 xcm-simulator = { path = "polkadot/xcm/xcm-simulator", default-features = false }
 zeroize = { version = "1.7.0", default-features = false }
 zstd = { version = "0.12.4", default-features = false }

cumulus/parachains/runtimes/assets/asset-hub-rococo/Cargo.toml

@@ -71,6 +71,7 @@ xcm = { workspace = true }
 xcm-builder = { workspace = true }
 xcm-executor = { workspace = true }
 xcm-fee-payment-runtime-api = { workspace = true }
+xcm-runtime-api = { workspace = true }
 
 # Cumulus
 cumulus-pallet-aura-ext = { workspace = true }
@@ -251,6 +252,7 @@ std = [
 	"xcm-builder/std",
 	"xcm-executor/std",
 	"xcm-fee-payment-runtime-api/std",
+	"xcm-runtime-api/std",
 	"xcm/std",
 ]
 

cumulus/parachains/runtimes/assets/asset-hub-rococo/src/lib.rs

@@ -1364,6 +1364,19 @@ impl_runtime_apis! {
 		}
 	}
 
+	impl xcm_runtime_api::conversions::LocationToAccountApi<Block> for Runtime {
+		fn convert_location(location: VersionedLocation, ss58_prefix: Option<u16>) -> Result<
+			xcm_runtime_api::conversions::Account,
+			xcm_runtime_api::conversions::Error
+		> {
+			xcm_runtime_api::conversions::LocationToAccountHelper::<
+				AccountId,
+				xcm_config::LocationToAccountId,
+				SS58Prefix,
+			>::convert_location(location, ss58_prefix)
+		}
+	}
+
 	impl cumulus_primitives_core::CollectCollationInfo<Block> for Runtime {
 		fn collect_collation_info(header: &<Block as BlockT>::Header) -> cumulus_primitives_core::CollationInfo {
 			ParachainSystem::collect_collation_info(header)

cumulus/parachains/runtimes/assets/asset-hub-westend/Cargo.toml

@@ -70,6 +70,7 @@ xcm = { workspace = true }
 xcm-builder = { workspace = true }
 xcm-executor = { workspace = true }
 xcm-fee-payment-runtime-api = { workspace = true }
+xcm-runtime-api = { workspace = true }
 
 # Cumulus
 cumulus-pallet-aura-ext = { workspace = true }
@@ -250,6 +251,7 @@ std = [
 	"xcm-builder/std",
 	"xcm-executor/std",
 	"xcm-fee-payment-runtime-api/std",
+	"xcm-runtime-api/std",
 	"xcm/std",
 ]
 

cumulus/parachains/runtimes/assets/asset-hub-westend/src/lib.rs

@@ -85,10 +85,10 @@ pub use sp_runtime::BuildStorage;
 
 use assets_common::{foreign_creators::ForeignCreators, matching::FromSiblingParachain};
 use polkadot_runtime_common::{BlockHashCount, SlowAdjustingFeeUpdate};
-use xcm::prelude::{VersionedAssetId, VersionedAssets, VersionedLocation, VersionedXcm};
-
-// We exclude `Assets` since it's the name of a pallet
-use xcm::latest::prelude::AssetId;
+use xcm::{
+	latest::prelude::AssetId,
+	prelude::{VersionedAssetId, VersionedAssets, VersionedLocation, VersionedXcm},
+};
 
 #[cfg(feature = "runtime-benchmarks")]
 use xcm::latest::prelude::{
@@ -1392,6 +1392,19 @@ impl_runtime_apis! {
 		}
 	}
 
+	impl xcm_runtime_api::conversions::LocationToAccountApi<Block> for Runtime {
+		fn convert_location(location: VersionedLocation, ss58_prefix: Option<u16>) -> Result<
+			xcm_runtime_api::conversions::Account,
+			xcm_runtime_api::conversions::Error
+		> {
+			xcm_runtime_api::conversions::LocationToAccountHelper::<
+				AccountId,
+				xcm_config::LocationToAccountId,
+				SS58Prefix,
+			>::convert_location(location, ss58_prefix)
+		}
+	}
+
 	impl pallet_transaction_payment_rpc_runtime_api::TransactionPaymentCallApi<Block, Balance, RuntimeCall>
 		for Runtime
 	{

cumulus/parachains/runtimes/bridge-hubs/bridge-hub-rococo/Cargo.toml

@@ -66,6 +66,7 @@ xcm = { workspace = true }
 xcm-builder = { workspace = true }
 xcm-executor = { workspace = true }
 xcm-fee-payment-runtime-api = { workspace = true }
+xcm-runtime-api = { workspace = true }
 
 # Cumulus
 cumulus-pallet-aura-ext = { workspace = true }
@@ -220,6 +221,7 @@ std = [
 	"xcm-builder/std",
 	"xcm-executor/std",
 	"xcm-fee-payment-runtime-api/std",
+	"xcm-runtime-api/std",
 	"xcm/std",
 ]
 

cumulus/parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/lib.rs

@@ -1008,6 +1008,19 @@ impl_runtime_apis! {
 		}
 	}
 
+	impl xcm_runtime_api::conversions::LocationToAccountApi<Block> for Runtime {
+		fn convert_location(location: VersionedLocation, ss58_prefix: Option<u16>) -> Result<
+			xcm_runtime_api::conversions::Account,
+			xcm_runtime_api::conversions::Error
+		> {
+			xcm_runtime_api::conversions::LocationToAccountHelper::<
+				AccountId,
+				xcm_config::LocationToAccountId,
+				SS58Prefix,
+			>::convert_location(location, ss58_prefix)
+		}
+	}
+
 	impl cumulus_primitives_core::CollectCollationInfo<Block> for Runtime {
 		fn collect_collation_info(header: &<Block as BlockT>::Header) -> cumulus_primitives_core::CollationInfo {
 			ParachainSystem::collect_collation_info(header)

cumulus/parachains/runtimes/bridge-hubs/bridge-hub-westend/Cargo.toml

@@ -62,6 +62,7 @@ xcm = { workspace = true }
 xcm-builder = { workspace = true }
 xcm-executor = { workspace = true }
 xcm-fee-payment-runtime-api = { workspace = true }
+xcm-runtime-api = { workspace = true }
 
 # Cumulus
 cumulus-pallet-aura-ext = { workspace = true }
@@ -185,6 +186,7 @@ std = [
 	"xcm-builder/std",
 	"xcm-executor/std",
 	"xcm-fee-payment-runtime-api/std",
+	"xcm-runtime-api/std",
 	"xcm/std",
 ]
 

cumulus/parachains/runtimes/bridge-hubs/bridge-hub-westend/src/lib.rs

@@ -758,6 +758,19 @@ impl_runtime_apis! {
 		}
 	}
 
+	impl xcm_runtime_api::conversions::LocationToAccountApi<Block> for Runtime {
+		fn convert_location(location: VersionedLocation, ss58_prefix: Option<u16>) -> Result<
+			xcm_runtime_api::conversions::Account,
+			xcm_runtime_api::conversions::Error
+		> {
+			xcm_runtime_api::conversions::LocationToAccountHelper::<
+				AccountId,
+				xcm_config::LocationToAccountId,
+				SS58Prefix,
+			>::convert_location(location, ss58_prefix)
+		}
+	}
+
 	impl cumulus_primitives_core::CollectCollationInfo<Block> for Runtime {
 		fn collect_collation_info(header: &<Block as BlockT>::Header) -> cumulus_primitives_core::CollationInfo {
 			ParachainSystem::collect_collation_info(header)

cumulus/parachains/runtimes/collectives/collectives-westend/Cargo.toml

@@ -68,6 +68,7 @@ xcm-builder = { workspace = true }
 xcm-executor = { workspace = true }
 xcm-fee-payment-runtime-api = { workspace = true }
 westend-runtime-constants = { workspace = true }
+xcm-runtime-api = { workspace = true }
 
 # Cumulus
 cumulus-pallet-aura-ext = { workspace = true }
@@ -239,6 +240,7 @@ std = [
 	"xcm-builder/std",
 	"xcm-executor/std",
 	"xcm-fee-payment-runtime-api/std",
+	"xcm-runtime-api/std",
 	"xcm/std",
 ]
 

cumulus/parachains/runtimes/collectives/collectives-westend/src/lib.rs

@@ -70,8 +70,8 @@ use frame_support::{
 	genesis_builder_helper::{build_state, get_preset},
 	parameter_types,
 	traits::{
-		fungible::HoldConsideration, ConstBool, ConstU16, ConstU32, ConstU64, ConstU8,
-		EitherOfDiverse, InstanceFilter, LinearStoragePrice, TransformOrigin,
+		fungible::HoldConsideration, ConstBool, ConstU32, ConstU64, ConstU8, EitherOfDiverse,
+		InstanceFilter, LinearStoragePrice, TransformOrigin,
 	},
 	weights::{ConstantMultiplier, Weight, WeightToFee as _},
 	PalletId,
@@ -163,6 +163,7 @@ parameter_types! {
 		})
 		.avg_block_initialization(AVERAGE_ON_INITIALIZE_RATIO)
 		.build_or_panic();
+	pub const SS58Prefix: u8 = 0;
 }
 
 // Configure FRAME pallets to include in runtime.
@@ -180,7 +181,7 @@ impl frame_system::Config for Runtime {
 	type Version = Version;
 	type AccountData = pallet_balances::AccountData<Balance>;
 	type SystemWeightInfo = weights::frame_system::WeightInfo<Runtime>;
-	type SS58Prefix = ConstU16<0>;
+	type SS58Prefix = SS58Prefix;
 	type OnSetCode = cumulus_pallet_parachain_system::ParachainSetCode<Self>;
 	type MaxConsumers = frame_support::traits::ConstU32<16>;
 }
@@ -982,6 +983,19 @@ impl_runtime_apis! {
 		}
 	}
 
+	impl xcm_runtime_api::conversions::LocationToAccountApi<Block> for Runtime {
+		fn convert_location(location: VersionedLocation, ss58_prefix: Option<u16>) -> Result<
+			xcm_runtime_api::conversions::Account,
+			xcm_runtime_api::conversions::Error
+		> {
+			xcm_runtime_api::conversions::LocationToAccountHelper::<
+				AccountId,
+				LocationToAccountId,
+				SS58Prefix,
+			>::convert_location(location, ss58_prefix)
+		}
+	}
+
 	impl cumulus_primitives_core::CollectCollationInfo<Block> for Runtime {
 		fn collect_collation_info(header: &<Block as BlockT>::Header) -> cumulus_primitives_core::CollationInfo {
 			ParachainSystem::collect_collation_info(header)

cumulus/parachains/runtimes/contracts/contracts-rococo/Cargo.toml

@@ -64,6 +64,7 @@ xcm = { workspace = true }
 xcm-builder = { workspace = true }
 xcm-executor = { workspace = true }
 xcm-fee-payment-runtime-api = { workspace = true }
+xcm-runtime-api = { workspace = true }
 
 # Cumulus
 cumulus-pallet-aura-ext = { workspace = true }
@@ -142,6 +143,7 @@ std = [
 	"xcm-builder/std",
 	"xcm-executor/std",
 	"xcm-fee-payment-runtime-api/std",
+	"xcm-runtime-api/std",
 	"xcm/std",
 ]