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Add dedicated error for "proc macro not found"

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This commit is contained in:
Jonas Schievink 2020-11-26 19:07:53 +01:00
parent c66d477f5a
commit 1b26520971
2 changed files with 3 additions and 1 deletions
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2
crates/hir_expand/src/proc_macro.rs
View file

@ -50,7 +50,7 @@ impl ProcMacroExpander {
proc_macro.expander.expand(&tt, None).map_err(mbe::ExpandError::from)
}
None => Err(err!("Unresolved proc macro")),
None => Err(mbe::ExpandError::UnresolvedProcMacro),
}
}
}

2
crates/mbe/src/lib.rs
View file

@ -35,6 +35,7 @@ pub enum ExpandError {
ConversionError,
InvalidRepeat,
ProcMacroError(tt::ExpansionError),
UnresolvedProcMacro,
Other(String),
}
@ -53,6 +54,7 @@ impl fmt::Display for ExpandError {
ExpandError::ConversionError => f.write_str("could not convert tokens"),
ExpandError::InvalidRepeat => f.write_str("invalid repeat expression"),
ExpandError::ProcMacroError(e) => e.fmt(f),
ExpandError::UnresolvedProcMacro => f.write_str("unresolved proc macro"),
ExpandError::Other(e) => f.write_str(e),
}
}