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error.go
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error.go
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package validator
import (
"fmt"
"strings"
)
type validationError interface {
Error() string
Field() string
Reason() string
}
type validationMultiError interface {
Error() string
AllErrors() []error
}
type ValidationError struct {
field string
reason string
cause error
}
var _ validationError = ValidationError{}
func NewError(field, reason string) ValidationError {
return ValidationError{field: field, reason: reason}
}
func NewErrorWithCause(field, reason string, cause error) ValidationError {
return ValidationError{field: field, reason: reason, cause: cause}
}
func (e ValidationError) Field() string {
return e.field
}
func (e ValidationError) Reason() string {
return e.reason
}
func (e ValidationError) Error() string {
cause := ""
if e.cause != nil {
cause = fmt.Sprintf(" | caused by: %v", e.cause)
}
return fmt.Sprintf("invalid %s: %s%s", e.field, e.reason, cause)
}
type ValidationMultiError []error
var _ validationMultiError = ValidationMultiError{}
func (m ValidationMultiError) Error() string {
var msgs []string
for _, err := range m {
msgs = append(msgs, err.Error())
}
return strings.Join(msgs, "; ")
}
func (m ValidationMultiError) AllErrors() []error {
return m
}
func NewMultiError(errs ...error) ValidationMultiError {
return errs
}