/// Transforms a value prior to formatting it.
#[derive(Copy, Clone, Debug, Hash, PartialEq, Eq, is_macro::Is)]
#[repr(i8)]
pub enum ConversionFlag {
/// No conversion
None = -1, // CPython uses -1
/// Converts by calling `str(<value>)`.
Str = b's' as i8,
/// Converts by calling `ascii(<value>)`.
Ascii = b'a' as i8,
/// Converts by calling `repr(<value>)`.
Repr = b'r' as i8,
}
impl ConversionFlag {
pub fn to_byte(&self) -> Option<u8> {
match self {
Self::None => None,
flag => Some(*flag as u8),
}
}
pub fn to_char(&self) -> Option<char> {
Some(self.to_byte()? as char)
}
}