use cargo_metadata::Error as CMErr;
use std::fmt;
#[derive(Debug)]
pub enum Error {
NoResolveGraph,
Metadata(CMErr),
InvalidPkgSpec(&'static str),
NoRootKrates,
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::NoResolveGraph => f.write_str("no resolution graph was provided"),
Self::Metadata(err) => write!(f, "{err}"),
Self::InvalidPkgSpec(err) => write!(f, "package spec was invalid: {err}"),
Self::NoRootKrates => f.write_str("no root crates available"),
}
}
}
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Self::Metadata(err) => Some(err),
_ => None,
}
}
}
impl From<CMErr> for Error {
fn from(e: CMErr) -> Self {
Error::Metadata(e)
}
}