(goctl): fix nested struct generation

tools/goctl/api/dartgen/gendata.go

@@ -157,8 +157,8 @@ func convertDataType(api *spec.ApiSpec, isLegacy bool) (error, *DartSpec) {
 		defineStruct, ok := ty.(spec.DefineStruct)
 		if ok {
 			for index, member := range defineStruct.Members {
-				structMember, ok := member.Type.(spec.DefineStruct)
-				if ok && structMember.IsNestedStruct() {
+				structMember, ok := member.Type.(spec.NestedStruct)
+				if ok {
 					defineStruct.Members[index].Type = spec.PrimitiveType{RawName: member.Name}
 					t := template.New("dataTemplate")
 					t = t.Funcs(funcMap)

tools/goctl/api/gogen/util.go

@@ -63,8 +63,8 @@ func writeProperty(writer io.Writer, name, tag, comment string, tp spec.Type, in
 		err            error
 		isNestedStruct bool
 	)
-	structType, ok := tp.(spec.DefineStruct)
-	if ok && structType.IsNestedStruct() {
+	structType, ok := tp.(spec.NestedStruct)
+	if ok {
 		isNestedStruct = true
 	}
 	if len(comment) > 0 {

tools/goctl/api/spec/name.go

@@ -30,9 +30,19 @@ func (t DefineStruct) Documents() []string {
 	return t.Docs
 }
 
-// IsNestedStruct returns whether the structure is nested.
-func (t DefineStruct) IsNestedStruct() bool {
-	return len(t.Members) > 0
+// Name returns a structure string, such as User
+func (t NestedStruct) Name() string {
+	return t.RawName
+}
+
+// Comments returns the comments of struct
+func (t NestedStruct) Comments() []string {
+	return nil
+}
+
+// Documents returns the documents of struct
+func (t NestedStruct) Documents() []string {
+	return t.Docs
 }
 
 // Name returns a map string, such as map[string]int

tools/goctl/api/spec/spec.go

@@ -105,6 +105,13 @@ type (
 		Docs    Doc
 	}
 
+	// NestedStruct describes a structure nested in structure.
+	NestedStruct struct {
+		RawName string
+		Members []Member
+		Docs    Doc
+	}
+
 	// PrimitiveType describes the basic golang type, such as bool,int32,int64, ...
 	PrimitiveType struct {
 		RawName string

tools/goctl/api/tsgen/util.go

@@ -54,8 +54,8 @@ func writeIndent(writer io.Writer, indent int) {
 }
 
 func genTsType(m spec.Member, indent int) (ty string, err error) {
-	v, ok := m.Type.(spec.DefineStruct)
-	if ok && v.IsNestedStruct() {
+	v, ok := m.Type.(spec.NestedStruct)
+	if ok {
 		writer := bytes.NewBuffer(nil)
 		_, err := fmt.Fprintf(writer, "{\n")
 		if err != nil {

tools/goctl/pkg/parser/api/parser/analyzer.go

@@ -54,7 +54,7 @@ func (a *Analyzer) astTypeToSpec(in ast.DataType) (spec.Type, error) {
 			return nil, ast.SyntaxError(v.Pos(), "unsupported empty struct")
 		}
 
-		return spec.DefineStruct{
+		return spec.NestedStruct{
 			RawName: v.RawText(),
 			Members: members,
 		}, nil
@@ -347,14 +347,12 @@ func (a *Analyzer) fillTypes() error {
 			for _, member := range v.Members {
 				switch v := member.Type.(type) {
 				case spec.DefineStruct:
-					if !v.IsNestedStruct() {
-						tp, err := a.findDefinedType(v.RawName)
-						if err != nil {
-							return err
-						}
-
-						member.Type = tp
+					tp, err := a.findDefinedType(v.RawName)
+					if err != nil {
+						return err
 					}
+
+					member.Type = tp
 				}
 				members = append(members, member)
 			}