🎉: init project

internal/sqlType/set.go

@@ -0,0 +1,53 @@
+package sqlType
+
+import "encoding/json"
+
+type Set map[string]struct{}
+
+func (s Set) MarshalJSON() ([]byte, error) {
+	array := make([]string, 0)
+	for name := range s {
+		array = append(array, name)
+	}
+
+	return json.Marshal(array)
+}
+
+func (s *Set) UnmarshalJSON(b []byte) error {
+	array := make([]string, 0)
+	if err := json.Unmarshal(b, &array); err != nil {
+		return err
+	}
+
+	set := make(map[string]struct{})
+
+	for _, name := range array {
+		set[name] = struct{}{}
+	}
+
+	*s = set
+	return nil
+}
+
+func (s Set) ToStringSlice() []string {
+	var (
+		result = make([]string, 0, len(s))
+	)
+
+	for key := range s {
+		result = append(result, key)
+	}
+
+	return result
+}
+
+func (s *Set) FromStringSlice(ss *[]string) {
+	if s == nil {
+		m := make(Set)
+		s = &m
+	}
+
+	for idx := range *(ss) {
+		(*s)[(*ss)[idx]] = struct{}{}
+	}
+}