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errors.go
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/
errors.go
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package ripper
const (
errCodeNegetivePage int = iota + 1
errCodeNegetivePageSize
errCodeInvalidPageToken
)
var errCodeToField = map[int]string{
errCodeNegetivePage: "page",
errCodeNegetivePageSize: "page_size",
errCodeInvalidPageToken: "page_token",
}
var errCodeToMessage = map[int]string{
errCodeNegetivePage: "page must be greater than 0",
errCodeNegetivePageSize: "page_size must be greater than 0",
errCodeInvalidPageToken: "page_token is invalid",
}
// PaginationError is an interface for pagination error.
type PaginationError interface {
error
Field() string
paginationError()
}
type paginationError struct {
code int
}
func (e *paginationError) Error() string {
return errCodeToMessage[e.code]
}
func (e *paginationError) Field() string {
return errCodeToField[e.code]
}
func (*paginationError) paginationError() {}
func newNegetivePageError() *paginationError {
return &paginationError{
code: errCodeNegetivePage,
}
}
func newNegetivePageSizeError() *paginationError {
return &paginationError{
code: errCodeNegetivePageSize,
}
}
func newInvalidPageTokenError() *paginationError {
return &paginationError{
code: errCodeInvalidPageToken,
}
}