use std::error::Error;
use std::fmt::{self, Display, Formatter};
use std::io;
#[cfg(feature = "image")]
use image::ImageError;
#[allow(clippy::upper_case_acronyms)]
#[derive(Debug)]
pub enum QRCodeError {
DataTooLong,
IOError(io::Error),
#[cfg(feature = "image")]
ImageError(ImageError),
ImageSizeTooSmall,
ImageSizeTooLarge,
}
impl From<io::Error> for QRCodeError {
#[inline]
fn from(error: io::Error) -> Self {
QRCodeError::IOError(error)
}
}
#[cfg(feature = "image")]
impl From<ImageError> for QRCodeError {
#[inline]
fn from(error: ImageError) -> Self {
QRCodeError::ImageError(error)
}
}
impl Display for QRCodeError {
#[inline]
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), fmt::Error> {
match self {
QRCodeError::DataTooLong => {
f.write_str("the supplied data does not fit any QR Code version")
}
QRCodeError::IOError(error) => Display::fmt(error, f),
#[cfg(feature = "image")]
QRCodeError::ImageError(error) => Display::fmt(error, f),
QRCodeError::ImageSizeTooSmall => {
f.write_str("image size is too small to draw the whole QR code")
}
QRCodeError::ImageSizeTooLarge => f.write_str("image size is too large to generate"),
}
}
}
impl Error for QRCodeError {}