rpcbinding: handle NULL results for structures, fix #3581

Signed-off-by: Roman Khimov <[email protected]>
nspcc-dev · Sep 11, 2024 · 4e3f17d · 4e3f17d
1 parent 6bbf15f
commit 4e3f17d
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Showing 7 changed files with 155 additions and 0 deletions.
diff --git a/cli/smartcontract/testdata/rpcbindings/notifications/rpcbindings_extended.out b/cli/smartcontract/testdata/rpcbindings/notifications/rpcbindings_extended.out
@@ -186,10 +186,15 @@ func (c *Contract) UnexportedFieldUnsigned() (*transaction.Transaction, error) {
 }
 
 // itemToCrazyStruct converts stack item into *CrazyStruct.
+// NULL item is returned as nil pointer without error.
 func itemToCrazyStruct(item stackitem.Item, err error) (*CrazyStruct, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(CrazyStruct)
 	err = res.FromStackItem(item)
 	return res, err
@@ -226,10 +231,15 @@ func (res *CrazyStruct) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToSimpleStruct converts stack item into *SimpleStruct.
+// NULL item is returned as nil pointer without error.
 func itemToSimpleStruct(item stackitem.Item, err error) (*SimpleStruct, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(SimpleStruct)
 	err = res.FromStackItem(item)
 	return res, err

diff --git a/cli/smartcontract/testdata/rpcbindings/notifications/rpcbindings_guessed.out b/cli/smartcontract/testdata/rpcbindings/notifications/rpcbindings_guessed.out
@@ -186,10 +186,15 @@ func (c *Contract) UnexportedFieldUnsigned() (*transaction.Transaction, error) {
 }
 
 // itemToUnnamed converts stack item into *Unnamed.
+// NULL item is returned as nil pointer without error.
 func itemToUnnamed(item stackitem.Item, err error) (*Unnamed, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(Unnamed)
 	err = res.FromStackItem(item)
 	return res, err
@@ -226,10 +231,15 @@ func (res *Unnamed) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToUnnamedX converts stack item into *UnnamedX.
+// NULL item is returned as nil pointer without error.
 func itemToUnnamedX(item stackitem.Item, err error) (*UnnamedX, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(UnnamedX)
 	err = res.FromStackItem(item)
 	return res, err

diff --git a/cli/smartcontract/testdata/rpcbindings/structs/rpcbindings.out b/cli/smartcontract/testdata/rpcbindings/structs/rpcbindings.out
@@ -161,10 +161,15 @@ func (c *ContractReader) Transaction(t *LedgerTransaction) (*LedgerTransaction,
 }
 
 // itemToLedgerBlock converts stack item into *LedgerBlock.
+// NULL item is returned as nil pointer without error.
 func itemToLedgerBlock(item stackitem.Item, err error) (*LedgerBlock, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(LedgerBlock)
 	err = res.FromStackItem(item)
 	return res, err
@@ -289,10 +294,15 @@ func (res *LedgerBlock) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToLedgerTransaction converts stack item into *LedgerTransaction.
+// NULL item is returned as nil pointer without error.
 func itemToLedgerTransaction(item stackitem.Item, err error) (*LedgerTransaction, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(LedgerTransaction)
 	err = res.FromStackItem(item)
 	return res, err
@@ -385,10 +395,15 @@ func (res *LedgerTransaction) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToManagementABI converts stack item into *ManagementABI.
+// NULL item is returned as nil pointer without error.
 func itemToManagementABI(item stackitem.Item, err error) (*ManagementABI, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(ManagementABI)
 	err = res.FromStackItem(item)
 	return res, err
@@ -451,10 +466,15 @@ func (res *ManagementABI) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToManagementContract converts stack item into *ManagementContract.
+// NULL item is returned as nil pointer without error.
 func itemToManagementContract(item stackitem.Item, err error) (*ManagementContract, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(ManagementContract)
 	err = res.FromStackItem(item)
 	return res, err
@@ -519,10 +539,15 @@ func (res *ManagementContract) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToManagementEvent converts stack item into *ManagementEvent.
+// NULL item is returned as nil pointer without error.
 func itemToManagementEvent(item stackitem.Item, err error) (*ManagementEvent, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(ManagementEvent)
 	err = res.FromStackItem(item)
 	return res, err
@@ -581,10 +606,15 @@ func (res *ManagementEvent) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToManagementGroup converts stack item into *ManagementGroup.
+// NULL item is returned as nil pointer without error.
 func itemToManagementGroup(item stackitem.Item, err error) (*ManagementGroup, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(ManagementGroup)
 	err = res.FromStackItem(item)
 	return res, err
@@ -631,10 +661,15 @@ func (res *ManagementGroup) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToManagementManifest converts stack item into *ManagementManifest.
+// NULL item is returned as nil pointer without error.
 func itemToManagementManifest(item stackitem.Item, err error) (*ManagementManifest, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(ManagementManifest)
 	err = res.FromStackItem(item)
 	return res, err
@@ -823,10 +858,15 @@ func (res *ManagementManifest) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToManagementMethod converts stack item into *ManagementMethod.
+// NULL item is returned as nil pointer without error.
 func itemToManagementMethod(item stackitem.Item, err error) (*ManagementMethod, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(ManagementMethod)
 	err = res.FromStackItem(item)
 	return res, err
@@ -903,10 +943,15 @@ func (res *ManagementMethod) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToManagementParameter converts stack item into *ManagementParameter.
+// NULL item is returned as nil pointer without error.
 func itemToManagementParameter(item stackitem.Item, err error) (*ManagementParameter, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(ManagementParameter)
 	err = res.FromStackItem(item)
 	return res, err
@@ -952,10 +997,15 @@ func (res *ManagementParameter) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToManagementPermission converts stack item into *ManagementPermission.
+// NULL item is returned as nil pointer without error.
 func itemToManagementPermission(item stackitem.Item, err error) (*ManagementPermission, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(ManagementPermission)
 	err = res.FromStackItem(item)
 	return res, err
@@ -1024,10 +1074,15 @@ func (res *ManagementPermission) FromStackItem(item stackitem.Item) error {
 }
 
 // itemToStructsInternal converts stack item into *StructsInternal.
+// NULL item is returned as nil pointer without error.
 func itemToStructsInternal(item stackitem.Item, err error) (*StructsInternal, error) {
 	if err != nil {
 		return nil, err
 	}
+	_, null := item.(stackitem.Null)
+	if null {
+		return nil, nil
+	}
 	var res = new(StructsInternal)
 	err = res.FromStackItem(item)
 	return res, err