#[derive(Debug, PartialEq, Eq, Clone)]
pub enum ExpansionError {
- IOError(String),
- JsonError(String),
Unknown(String),
ExpansionError(String),
}
impl fmt::Display for ExpansionError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
- ExpansionError::IOError(e) => write!(f, "I/O error: {}", e),
- ExpansionError::JsonError(e) => write!(f, "JSON decoding error: {}", e),
ExpansionError::Unknown(e) => e.fmt(f),
ExpansionError::ExpansionError(e) => write!(f, "proc macro returned error: {}", e),
}