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validator__int.go
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validator__int.go
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package validator
import (
"context"
"fmt"
"reflect"
"strconv"
"github.com/machinefi/w3bstream/pkg/depends/kit/validator/errors"
"github.com/machinefi/w3bstream/pkg/depends/kit/validator/rules"
"github.com/machinefi/w3bstream/pkg/depends/x/ptrx"
"github.com/machinefi/w3bstream/pkg/depends/x/typesx"
)
type Int struct {
BitSize uint
Minimum *int64
Maximum *int64
MultipleOf int64
ExclusiveMaximum bool
ExclusiveMinimum bool
Enums map[int64]string
}
func init() { DefaultFactory.Register(&Int{}) }
func (Int) Names() []string {
return []string{"int", "int8", "int16", "int32", "int64"}
}
func (vi *Int) SetDefault() {
if vi != nil {
if vi.BitSize == 0 {
vi.BitSize = 32
}
if vi.Maximum == nil {
vi.Maximum = ptrx.Int64(MaxInt(vi.BitSize))
}
if vi.Minimum == nil {
vi.Minimum = ptrx.Int64(MinInt(vi.BitSize))
}
}
}
var (
TargetIntValue = "int value"
)
func (vi *Int) Validate(v interface{}) error {
rv, ok := v.(reflect.Value)
if !ok {
rv = reflect.ValueOf(v)
}
if k := rv.Type().Kind(); !typesx.IsSignedIntReflectKind(k) {
return errors.NewUnsupportedTypeError(rv.Type().String(), vi.String())
}
val := rv.Int()
if vi.Enums != nil {
if _, ok := vi.Enums[val]; !ok {
values := make([]interface{}, 0)
for _, v := range vi.Enums {
values = append(values, v)
}
return &errors.NotInEnumError{
Target: TargetIntValue,
Current: val,
Enums: values,
}
}
return nil
}
minimum := *vi.Minimum
maximum := *vi.Maximum
if ((vi.ExclusiveMinimum && val == minimum) || val < minimum) ||
((vi.ExclusiveMaximum && val == maximum) || val > maximum) {
return &errors.OutOfRangeError{
Target: TargetFloatValue,
Current: val,
Minimum: minimum,
ExclusiveMinimum: vi.ExclusiveMinimum,
Maximum: maximum,
ExclusiveMaximum: vi.ExclusiveMaximum,
}
}
if vi.MultipleOf != 0 {
if val%vi.MultipleOf != 0 {
return &errors.MultipleOfError{
Target: TargetFloatValue,
Current: val,
MultipleOf: vi.MultipleOf,
}
}
}
return nil
}
func (Int) New(ctx context.Context, r *Rule) (Validator, error) {
vi := &Int{}
bits, err := IntRuleBitSize(r)
if err != nil {
return nil, err
}
vi.BitSize = uint(bits)
min, max, err := IntRuleRange(r, vi.BitSize)
if err != nil {
return nil, err
}
vi.Maximum, vi.Minimum = max, min
vi.SetDefault()
vi.ExclusiveMinimum = r.ExclusiveMin
vi.ExclusiveMaximum = r.ExclusiveMax
multiple, enums, err := IntRuleValues(r, int(vi.BitSize))
if err != nil {
return nil, err
}
vi.MultipleOf, vi.Enums = multiple, enums
return vi, vi.TypeCheck(r)
}
func (vi *Int) TypeCheck(r *Rule) error {
switch r.Type.Kind() {
case reflect.Int8:
if vi.BitSize > 8 {
return fmt.Errorf("bit size too large for type %s", r.Type)
}
return nil
case reflect.Int16:
if vi.BitSize > 16 {
return fmt.Errorf("bit size too large for type %s", r.Type)
}
return nil
case reflect.Int, reflect.Int32:
if vi.BitSize > 32 {
return fmt.Errorf("bit size too large for type %s", r.Type)
}
return nil
case reflect.Int64:
return nil
}
return errors.NewUnsupportedTypeError(r.String(), vi.String())
}
func (vi *Int) String() string {
r := rules.NewRule(vi.Names()[0])
r.Params = []rules.Node{
rules.NewLiteral([]byte(strconv.Itoa(int(vi.BitSize)))),
}
if vi.Minimum != nil || vi.Maximum != nil {
r.Range = make([]*rules.Lit, 2)
if vi.Minimum != nil {
r.Range[0] = rules.NewLiteral(
[]byte(fmt.Sprintf("%d", *vi.Minimum)),
)
}
if vi.Maximum != nil {
r.Range[1] = rules.NewLiteral(
[]byte(fmt.Sprintf("%d", *vi.Maximum)),
)
}
r.ExclusiveMin = vi.ExclusiveMinimum
r.ExclusiveMax = vi.ExclusiveMaximum
}
r.ExclusiveMin = vi.ExclusiveMinimum
r.ExclusiveMax = vi.ExclusiveMaximum
if vi.MultipleOf != 0 {
r.ValueMatrix = [][]*rules.Lit{{
rules.NewLiteral([]byte("%" + fmt.Sprintf("%d", vi.MultipleOf))),
}}
} else if vi.Enums != nil {
ruleValues := make([]*rules.Lit, 0)
for _, str := range vi.Enums {
ruleValues = append(ruleValues, rules.NewLiteral([]byte(str)))
}
r.ValueMatrix = [][]*rules.Lit{ruleValues}
}
return string(r.Bytes())
}