NamedAddr AppendTags() and IsZeroAddress() (#208)

storage/variable.go

@@ -25,7 +25,7 @@ func (v *Variable) IsAddressType() bool {
 }
 
 // IsDynamicArray checks if the variable is a dynamic array.
-// Currently returns false and needs implementation for dynamic array checking.
+// Currently, returns false and needs implementation for dynamic array checking.
 func (v *Variable) IsDynamicArray() bool {
 	variableType := v.StateVariable.GetType()
 	return strings.Contains(variableType, "[]")
@@ -52,7 +52,7 @@ func (v *Variable) IsStructType() bool {
 	return strings.HasPrefix(variableType, "struct")
 }
 
-// IsStructType checks if the variable is of a contract type.
+// IsContractType checks if the variable is of a contract type.
 // Returns true if the variable type starts with "contract".
 func (v *Variable) IsContractType() bool {
 	variableType := v.StateVariable.GetType()

utils/addr.go

@@ -23,3 +23,18 @@ type NamedAddr struct {
 	Addr common.Address `json:"addr"`
 	Type AddressType    `json:"type"`
 }
+
+// AppendTags appends unique tags to the named address
+func (n NamedAddr) AppendTags(tags ...string) NamedAddr {
+	for _, tag := range tags {
+		if !StringInSlice(tag, n.Tags) {
+			n.Tags = append(n.Tags, tag)
+		}
+	}
+	return n
+}
+
+// IsZeroAddress checks whenever named address is zero address
+func (n NamedAddr) IsZeroAddress() bool {
+	return n.Addr == ZeroAddress
+}