github.com/YabZhang/zstringer

说明

拿 golang.org/x/tools/cmd/stringer 源码做修改，用法相同。

新增 go generate 生成代码包含解析方法 func Parse%{typeName}String(s string) (%{typeName}s, bool) 。

Example

// event.go
package event

// 定义事件
//
//go:generate zstringer -type=Event
type Event int

const (
	InsertCoinEvent Event = iota
	SelectItemEvent
	ItemConfirmEvent
)

生成代码

// Code generated by "zstringer -type=Event"; DO NOT EDIT.

package event

import "strconv"

func _() {
	// An "invalid array index" compiler error signifies that the constant values have changed.
	// Re-run the zstringer command to generate them again.
	var x [1]struct{}
	_ = x[InsertCoinEvent-0]
	_ = x[SelectItemEvent-1]
	_ = x[ItemConfirmEvent-2]
}

const _Event_name = "InsertCoinEventSelectItemEventItemConfirmEvent"

var _Event_index = [...]uint8{0, 15, 30, 46}
var _Event_inst = [...]Event{InsertCoinEvent, SelectItemEvent, ItemConfirmEvent}

func (i Event) String() string {
	if i < 0 || i >= Event(len(_Event_index)-1) {
		return "Event(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _Event_name[_Event_index[i]:_Event_index[i+1]]
}

func ParseEventString(s string) (Event, bool) {
	if len(s) == 0 || len(_Event_inst) == 0 {
		return 0, false
	}
	for _, inst := range _Event_inst {
		if inst.String() == s {
			return inst, true
		}
	}
	return 0, false
}