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Feat: Add view function is_asset_type_dispatchable #333

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Merged
ganymedio merged 3 commits into from
Apr 30, 2026
Merged

Feat: Add view function is_asset_type_dispatchable #333

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0d24bbb
add view function is_asset_type_dispatchable
ganymedio Apr 30, 2026
83730ee
fix transaction parameter, add unit test
ganymedio Apr 30, 2026
4a60069
add true branch test
ganymedio Apr 30, 2026
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23 changes: 23 additions & 0 deletions aptos-move/framework/aptos-framework/sources/fungible_asset.move
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Original file line number Diff line number Diff line change
Expand Up @@ -700,6 +700,13 @@ module aptos_framework::fungible_asset {
exists<DispatchFunctionStore>(metadata_addr)
}

#[view]
/// Return whether a fungible asset type has any dispatch or derived-supply hooks registered.
public fun is_asset_type_dispatchable(metadata: Object<Metadata>): bool {
let metadata_addr = object::object_address(&metadata);
exists<DispatchFunctionStore>(metadata_addr) || exists<DeriveSupply>(metadata_addr)
}

public fun deposit_dispatch_function<T: key>(store: Object<T>): Option<FunctionInfo> acquires FungibleStore, DispatchFunctionStore {
let fa_store = borrow_store_resource(&store);
let metadata_addr = object::object_address(&fa_store.metadata);
Expand Down Expand Up @@ -1537,6 +1544,22 @@ module aptos_framework::fungible_asset {
remove_store(&delete_ref);
}

#[test(creator = @0xcafe)]
fun test_is_asset_type_dispatchable_false_for_plain_fa(creator: &signer) {
let (_, _, _, _, metadata) = create_fungible_asset(creator);
assert!(!is_asset_type_dispatchable(metadata), 1);
}

#[test(creator = @0xcafe)]
fun test_is_asset_type_dispatchable_true_with_derived_supply(creator: &signer) {
let (creator_ref, token_object) = create_test_token(creator);
init_test_metadata(&creator_ref);
let metadata = object::convert<TestToken, Metadata>(token_object);
assert!(!is_asset_type_dispatchable(metadata), 1);
register_derive_supply_dispatch_function(&creator_ref, option::none());
assert!(is_asset_type_dispatchable(metadata), 2);
}

#[test(creator = @0xcafe, aaron = @0xface)]
fun test_e2e_basic_flow(
creator: &signer,
Expand Down
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