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validator_helper_uint.go
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/
validator_helper_uint.go
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package validator
import (
"bytes"
"fmt"
"strconv"
"unicode"
"github.com/machinefi/w3bstream/pkg/depends/kit/validator/errors"
"github.com/machinefi/w3bstream/pkg/depends/x/ptrx"
)
func MaxUint(bits uint) uint64 { return 1<<bits - 1 }
func UintRuleBitSize(r *Rule) (bits uint64, err error) {
buf := &bytes.Buffer{}
for _, char := range r.Name {
if unicode.IsDigit(char) {
buf.WriteRune(char)
}
}
if buf.Len() == 0 && r.Params != nil {
if len(r.Params) != 1 {
err = fmt.Errorf(
"unit should only 1 parameter, but got %d", len(r.Params),
)
return
}
buf.Write(r.Params[0].Bytes())
}
if buf.Len() != 0 {
s := buf.String()
bits, err = strconv.ParseUint(s, 10, 8)
if err != nil || bits > 64 {
err = errors.NewSyntaxError(
"unit parameter should be valid bit size, but got `%s`", s,
)
return
}
}
if bits == 0 {
bits = 32
}
return
}
func UintRuleRange(r *Rule, typ string, bits uint) (uint64, *uint64, error) {
if r.Range == nil {
return 0, nil, nil
}
if r.Name == "array" && len(r.Range) > 1 {
return 0, nil, errors.NewSyntaxError("array should declare length only")
}
parseUint := func(b []byte) (*uint64, error) {
if len(b) == 0 {
return nil, nil
}
n, err := strconv.ParseUint(string(b), 10, int(bits))
if err != nil {
return nil, fmt.Errorf(" %s value is not correct: %s", typ, err)
}
return &n, nil
}
ranges := r.Range
switch len(ranges) {
case 2:
min, err := parseUint(ranges[0].Bytes())
if err != nil {
return 0, nil, fmt.Errorf("min %s", err)
}
if min == nil {
min = ptrx.Uint64(0)
}
max, err := parseUint(ranges[1].Bytes())
if err != nil {
return 0, nil, fmt.Errorf("max %s", err)
}
if max != nil && *max < *min {
return 0, nil, fmt.Errorf(
"max %s value must be equal or large than min value %d, current %d",
typ, min, max,
)
}
return *min, max, nil
case 1:
min, err := parseUint(ranges[0].Bytes())
if err != nil {
return 0, nil, fmt.Errorf("min %s", err)
}
if min == nil {
min = ptrx.Uint64(0)
}
return *min, min, nil
}
return 0, nil, nil
}
func UintRuleValues(r *Rule, bits int) (multiple uint64, enums map[uint64]string, err error) {
values := r.ComputedValues()
if values == nil {
return
}
if len(values) == 1 {
raw := values[0].Bytes()
if raw[0] == '%' {
raw = raw[1:]
multiple, err = strconv.ParseUint(string(raw), 10, bits)
if err != nil {
err = errors.NewSyntaxError(
"multipleOf should be a valid int%d value, but got `%s`",
bits, raw,
)
return
}
}
}
if multiple == 0 {
enums = map[uint64]string{}
for _, v := range values {
s := string(v.Bytes())
enumv, _err := strconv.ParseUint(s, 10, bits)
if _err != nil {
err = errors.NewSyntaxError(
"enum should be a valid int%d value, but got `%s`", bits, v,
)
return
}
enums[enumv] = s
}
}
return
}