add NotSupported type

gpp_parsed_consent.go

@@ -43,13 +43,19 @@ type GppSection struct {
 type GppSectionParser interface {
 	ParseConsent() (GppParsedConsent, error)
 	GetSectionId() int
+	GetSectionValue() string
 }
 
 // GetSectionId returns the Section ID for a given GppSection.
 func (g *GppSection) GetSectionId() int {
 	return g.sectionId
 }
 
+// GetSectionValue returns the Section Value for a given GppSection.
+func (g *GppSection) GetSectionValue() string {
+	return g.sectionValue
+}
+
 type GppSubSection struct {
 	// Global Privacy Control (GPC) is signaled and set.
 	Gpc bool
@@ -135,9 +141,10 @@ func MapGppSectionToParser(s string) ([]GppSectionParser, error) {
 			gppSection = NewMspaUT(segments[i])
 		case SectionIDUSCT:
 			gppSection = NewMspaCT(segments[i])
+		default:
+			gppSection = NewNotSupported(segments[i], sid)
 		}
 
-		// when the section id is not supported, append nullptr to indicate that this section is invalid
 		gppSections = append(gppSections, gppSection)
 	}
 	return gppSections, nil

mspa_sections.go

@@ -2,6 +2,7 @@ package iabconsent
 
 import (
 	"encoding/base64"
+	"fmt"
 	"strings"
 
 	"github.com/pkg/errors"
@@ -43,6 +44,14 @@ type USPV struct {
 	GppSection
 }
 
+type NotSupported struct {
+	GppSection
+}
+
+func (u NotSupported) ParseConsent() (GppParsedConsent, error) {
+	return nil, errors.New(fmt.Sprintf("Section ID %d is not supported", u.sectionId))
+}
+
 func NewTCFEU(section string) *TCFEU {
 	return &TCFEU{GppSection{sectionId: SectionIDEUTCFv2, sectionValue: section}}
 }
@@ -79,6 +88,10 @@ func NewMspaCT(section string) *MspaUsCT {
 	return &MspaUsCT{GppSection{sectionId: SectionIDUSCT, sectionValue: section}}
 }
 
+func NewNotSupported(section string, sectionID int) *NotSupported {
+	return &NotSupported{GppSection{sectionId: sectionID, sectionValue: section}}
+}
+
 func (t TCFEU) ParseConsent() (GppParsedConsent, error) {
 	return ParseV2(t.sectionValue)
 }