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guard.go
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guard.go
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package guard
import (
"errors"
"fmt"
"reflect"
reflect_helper "github.com/cjlapao/common-go-helpers/reflect"
)
func FatalEmptyOrNil(value interface{}, name ...string) {
if reflect_helper.IsNilOrEmpty(value) {
var message string
if len(name) == 1 {
message = fmt.Sprintf("Value %v of type %v cannot be nil", name[0], reflect.TypeOf(value))
} else {
message = fmt.Sprintf("Value %v cannot be nil", fmt.Sprint(reflect.TypeOf(value)))
}
panic(message)
}
}
func EmptyOrNil(value interface{}, name ...string) error {
if reflect_helper.IsNilOrEmpty(value) {
var message string
if len(name) == 1 {
message = fmt.Sprintf("Value %v of type %v cannot be nil", name[0], reflect.TypeOf(value))
} else {
message = fmt.Sprintf("Value %v cannot be nil", fmt.Sprint(reflect.TypeOf(value)))
}
return errors.New(message)
}
return nil
}
func EmptyOrNilWithMessage(value interface{}, message string) error {
if reflect_helper.IsNilOrEmpty(value) {
return errors.New(message)
}
return nil
}
func IsFalse(value bool, name ...string) error {
if !value {
var message string
if len(name) == 1 {
message = fmt.Sprintf("Value %v cannot be false", name[0])
} else {
message = "Value bool cannot be false"
}
return errors.New(message)
}
return nil
}
func IsNil(value interface{}) bool {
switch value.(type) {
case string:
return false
case bool:
return false
case int, int8, int16, int32, int64:
return false
case float32, float64:
return false
case uint, uintptr, uint8, uint16, uint32, uint64:
return false
default:
if reflect.ValueOf(value).Kind() == reflect.Struct {
return false
}
return value == nil || reflect.ValueOf(value).IsNil()
}
}