derive

Derive is a project written in Go that allows users to utilize macro functionality similar to that of Rust. With Derive, developers can simplify their codebase by defining and invoking macros to generate repetitive or boilerplate code. Derive aims to improve the developer experience by reducing code redundancy and increasing code readability. It provides an intuitive interface for defining and invoking macros, making it an excellent tool for developers looking to improve their productivity in Go programming.

i18n

// .../message/message.go
package message

// 库存不足
//
// #[i18n(code = 400, zh-HK = "庫存不足", zh-CN = "库存不足", en = "Insufficient inventory")]
type InsufficientInventory int32

// .../message/message_i18n.go

// Code generated by derive; DO NOT EDIT.
package message

import (
	"fmt"
	"github.com/wule61/derive/utils"
)

// InsufficientInventory_ 庫存不足 [400]
var InsufficientInventory_ InsufficientInventory = 400

var insufficientinventoryLocales = map[string]string{
	"en":    "Insufficient inventory",
	"zh-CN": "库存不足",
	"zh-HK": "庫存不足",
}

func (InsufficientInventory) Trans(langOrArgs ...any) string {
	lang, args := utils.ParseLangArgs(langOrArgs...)
	if msg, ok := insufficientinventoryLocales[lang]; ok {
		if len(args) > 0 {
			return fmt.Sprintf(msg, args...)
		}
		return msg
	}
	return insufficientinventoryLocales["zh-HK"]
}

func (InsufficientInventory) Code() int32 {
	return 400
}

i18n is a derive that can automatically generate code for internationalization based on the annotations in the structure. In this code, the YearCard structure contains the necessary multilingual parameters and error codes for internationalization. derive will parse the information in the annotation and generate the Trans and Code methods. This makes it easier and more convenient to use multilingualism in the code with the help of github copilot, without having to manually translate and write multilingual versions of the code or yaml files. And the multilingual parameters are free, so you can use parameters like zh_HK, en-US to represent your language.