sys.go

package util

import (
	"fmt"
	"path/filepath"
	"runtime"
	"strings"
)

// 给定打印层数,一般3~5覆盖你的逻辑及封装代码范围
func StackToString(count int) string {

	const startStack = 2

	var sb strings.Builder

	var lastStr string

	for i := startStack; i < startStack+count; i++ {
		_, file, line, ok := runtime.Caller(i)

		var str string

		if ok {
			str = fmt.Sprintf("%s:%d", filepath.Base(file), line)
		} else {
			str = "??"
		}

		// 折叠??
		if lastStr != "??" || str != "??" {
			if i > startStack {
				sb.WriteString(" -> ")
			}

			sb.WriteString(str)
		}

		lastStr = str

	}

	return sb.String()
}