Function caller

eval/eval.go:255–278

caller returns the name of calling function.

()

// caller returns the name of calling function.
func caller() string {
	var latest string
	for skip := 2; skip <= 5; skip++ {
		pc, _, _, ok := runtime.Caller(skip)
		if !ok {
			break
		}
		name := runtime.FuncForPC(pc).Name()
		if !strings.HasPrefix(name, "goa.design/goa/v3/dsl.") {
			break
		}
		caller := strings.Split(strings.TrimPrefix(name, "goa.design/goa/v3/dsl."), ".")[0]
		for _, first := range caller {
			if unicode.IsUpper(first) {
				latest = caller
			}
			break
		}
	}
	if latest != "" {
		return latest
	}
	return "<unknown>"
}