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Panic when creating a HirDisplayWrapper with DisplayTarget::SourceCode

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This commit is contained in:
Lukas Wirth 2021-04-06 14:42:34 +02:00
parent ffdb2da49d
commit a43409fa43
1 changed files with 5 additions and 1 deletions
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6
crates/hir_ty/src/display.rs
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@ -51,6 +51,10 @@ pub trait HirDisplay {
where where
Self: Sized, Self: Sized,
{ {
assert!(
!matches!(display_target, DisplayTarget::SourceCode { .. }),
"HirDisplayWrapper cannot fail with DisplaySourceCodeError, use HirDisplay::hir_fmt directly instead"
);
HirDisplayWrapper { db, t: self, max_size, omit_verbose_types, display_target } HirDisplayWrapper { db, t: self, max_size, omit_verbose_types, display_target }
} }
@ -235,7 +239,7 @@ where
Err(HirDisplayError::FmtError) => Err(fmt::Error), Err(HirDisplayError::FmtError) => Err(fmt::Error),
Err(HirDisplayError::DisplaySourceCodeError(_)) => { Err(HirDisplayError::DisplaySourceCodeError(_)) => {
// This should never happen // This should never happen
panic!("HirDisplay failed when calling Display::fmt!") panic!("HirDisplay::hir_fmt failed with DisplaySourceCodeError when calling Display::fmt!")
} }
} }
} }