Function writeEnumTypeDiff

backend/plugin/schema/pg/metadata_migration.go:1822–1843

(out *strings.Builder, enumDiff *schema.EnumTypeDiff)

}

func writeEnumTypeDiff(out *strings.Builder, enumDiff *schema.EnumTypeDiff) error {
	switch enumDiff.Action {
	case schema.MetadataDiffActionCreate:
		if err := writeEnum(out, enumDiff.SchemaName, enumDiff.NewEnumType); err != nil {
			return err
		}
		if _, err := out.WriteString(";\n\n"); err != nil {
			return err
		}
		if enumDiff.NewEnumType.Comment != "" {
			return writeEnumComment(out, enumDiff.SchemaName, enumDiff.NewEnumType)
		}
		return nil
	case schema.MetadataDiffActionDrop:
		_, err := fmt.Fprintf(out, "DROP TYPE \"%s\".\"%s\";\n\n", enumDiff.SchemaName, enumDiff.EnumTypeName)
		return err
	case schema.MetadataDiffActionAlter:
		return writeAlterEnumTypeAddValues(out, enumDiff.SchemaName, enumDiff.OldEnumType, enumDiff.NewEnumType)
	default:
		return nil
	}
}

func writeAlterEnumTypeAddValues(out *strings.Builder, schemaName string, oldEnum *storepb.EnumTypeMetadata, newEnum *storepb.EnumTypeMetadata) error {
	oldValueSet := make(map[string]bool)