Add Inner Ring code

pkg/morph/client/netmap/ir_list.go

@@ -0,0 +1,61 @@
+package netmap
+
+import (
+	"github.com/nspcc-dev/neofs-node/pkg/morph/client"
+	"github.com/pkg/errors"
+)
+
+// InnerRingListArgs groups the arguments
+// of inner ring list test invoke call.
+type InnerRingListArgs struct {
+}
+
+// InnerRingListValues groups the stack parameters
+// returned by inner ring list test invoke.
+type InnerRingListValues struct {
+	keys [][]byte // list of keys of IR nodes in a binary format
+}
+
+// KeyList return the list of IR node keys
+// in a binary format.
+func (g InnerRingListValues) KeyList() [][]byte {
+	return g.keys
+}
+
+// InnerRingList performs the test invoke of inner ring list
+// method of NeoFS Netmap contract.
+func (c *Client) InnerRingList(args InnerRingListArgs) (*InnerRingListValues, error) {
+	prms, err := c.client.TestInvoke(
+		c.innerRingListMethod,
+	)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not perform test invocation (%s)", c.innerRingListMethod)
+	} else if ln := len(prms); ln != 1 {
+		return nil, errors.Errorf("unexpected stack item count (%s): %d", c.innerRingListMethod, ln)
+	}
+
+	prms, err = client.ArrayFromStackParameter(prms[0])
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not get stack item array from stack item (%s)", c.innerRingListMethod)
+	}
+
+	res := &InnerRingListValues{
+		keys: make([][]byte, 0, len(prms)),
+	}
+
+	for i := range prms {
+		nodePrms, err := client.ArrayFromStackParameter(prms[i])
+		if err != nil {
+			return nil, errors.Wrap(err, "could not get stack item array (Node #%d)")
+		}
+
+		key, err := client.BytesFromStackParameter(nodePrms[0])
+		if err != nil {
+			return nil, errors.Wrapf(err, "could not parse stack item (Key #%d)", i)
+		}
+
+		res.keys = append(res.keys, key)
+	}
+
+	return res, nil
+}