go-easy-utils/jsonx/to_string.go

package jsonx

import (
	"fmt"
	"reflect"
	"strconv"
)

func toStringReflect(i any) string {
	if i == nil {
		return ""
	}

	v := reflect.ValueOf(i)
	if v.Kind() == reflect.Ptr {
		if v.IsNil() {
			return ""
		}
		v = v.Elem()
	}

	switch v.Kind() {
	case reflect.String:
		return v.String()
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		return strconv.FormatInt(v.Int(), 10)
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
		return strconv.FormatUint(v.Uint(), 10)
	case reflect.Float32:
		return strconv.FormatFloat(v.Float(), 'f', -1, 32)
	case reflect.Float64:
		return strconv.FormatFloat(v.Float(), 'f', -1, 64)
	case reflect.Complex64:
		return fmt.Sprintf("(%g+%gi)", real(v.Complex()), imag(v.Complex()))
	case reflect.Complex128:
		return fmt.Sprintf("(%g+%gi)", real(v.Complex()), imag(v.Complex()))
	case reflect.Bool:
		return strconv.FormatBool(v.Bool())
	default:
		return ""
	}
}