refactor(errors): change errors

errors/code.go

@@ -0,0 +1,31 @@
+package errors
+
+import (
+	"fmt"
+)
+
+const (
+	DefaultErrCode ErrorCode = -1
+)
+
+type ErrorCode int64
+
+func (ec ErrorCode) Int() int {
+	return int(ec)
+}
+
+func (ec ErrorCode) Int64() int64 {
+	return int64(ec)
+}
+
+func (ec ErrorCode) Int32() int32 {
+	return int32(ec)
+}
+
+func (ec ErrorCode) ToString() string {
+	return fmt.Sprintf("%d", ec)
+}
+
+func (ec ErrorCode) Equal(target ErrorCode) bool {
+	return ec == target
+}