Merge pull request #537 from CosmWasm/add-type-assertions

Add compile time type assertions for `hasSubMessages` interface
CosmWasm · Jun 5, 2024 · 48ea39c · 48ea39c
2 parents 36bb5d2 + 87ce53a
commit 48ea39c
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/lib_libwasmvm.go b/lib_libwasmvm.go
@@ -546,6 +546,14 @@ type hasSubMessages interface {
 	SubMessages() []types.SubMsg
 }
 
+// make sure the types implement the interface
+// cannot put these next to the types, as the interface is private
+var (
+	_ hasSubMessages = (*types.IBCBasicResult)(nil)
+	_ hasSubMessages = (*types.IBCReceiveResult)(nil)
+	_ hasSubMessages = (*types.ContractResult)(nil)
+)
+
 func DeserializeResponse(gasLimit uint64, deserCost types.UFraction, gasReport *types.GasReport, data []byte, response any) error {
 	gasForDeserialization := deserCost.Mul(uint64(len(data))).Floor()
 	if gasLimit < gasForDeserialization+gasReport.UsedInternally {