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intAssertion.go
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intAssertion.go
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package arg
import (
"fmt"
"sort"
"github.com/Bofry/arg/internal"
)
var (
_IntAssertion = IntAssertion("")
_ IntValidator = _IntAssertion.NonNegativeInteger
_ IntValidator = _IntAssertion.NonZero
)
type IntAssertion string
func (IntAssertion) Assert(v int64, name string, validators ...IntValidator) error {
for _, validate := range validators {
if err := validate(v, name); err != nil {
return err
}
}
return nil
}
func (IntAssertion) Assertor(v int64, name string) *IntAssertor {
return &IntAssertor{v, name}
}
func (IntAssertion) NonNegativeInteger(v int64, name string) error {
if v < 0 {
return &InvalidArgumentError{
Name: name,
Reason: internal.ERR_NON_NEGATIVE_INTENGER,
}
}
return nil
}
func (IntAssertion) NonZero(v int64, name string) error {
if v == 0 {
return &InvalidArgumentError{
Name: name,
Reason: internal.ERR_NON_ZERO,
}
}
return nil
}
func (IntAssertion) Must(fn IntPredicate) IntValidator {
return func(v int64, name string) error {
if !fn(v) {
return &InvalidArgumentError{
Name: name,
Reason: fmt.Sprintf(internal.ERR_INVALID_INTEGER, v),
}
}
return nil
}
}
func (IntAssertion) NotIn(values ...int64) IntValidator {
sort.Slice(values, func(i, j int) bool { return values[i] < values[j] })
return func(v int64, name string) error {
i := sort.Search(len(values), func(i int) bool { return values[i] >= v })
if i < len(values) && values[i] == v {
return &InvalidArgumentError{
Name: name,
Reason: fmt.Sprintf(internal.ERR_INVALID_INTEGER, v),
}
}
return nil
}
}
func (IntAssertion) In(values ...int64) IntValidator {
sort.Slice(values, func(i, j int) bool { return values[i] < values[j] })
return func(v int64, name string) error {
i := sort.Search(len(values), func(i int) bool { return values[i] >= v })
if i >= len(values) || values[i] != v {
return &InvalidArgumentError{
Name: name,
Reason: fmt.Sprintf(internal.ERR_INVALID_INTEGER, v),
}
}
return nil
}
}
func (IntAssertion) LessOrEqual(boundary int64) IntValidator {
return func(v int64, name string) error {
if boundary < v {
return &InvalidArgumentError{
Name: name,
Reason: internal.ERR_OUT_OF_RANGE,
}
}
return nil
}
}
func (IntAssertion) GreaterOrEqual(boundary int64) IntValidator {
return func(v int64, name string) error {
if boundary > v {
return &InvalidArgumentError{
Name: name,
Reason: internal.ERR_OUT_OF_RANGE,
}
}
return nil
}
}
// BetweenRange checks if given integer is between the specified minimum and maximum values (both inclusive).
func (IntAssertion) BetweenRange(min, max int64) IntValidator {
return func(v int64, name string) error {
if min > v || v > max {
return &InvalidArgumentError{
Name: name,
Reason: internal.ERR_OUT_OF_RANGE,
}
}
return nil
}
}