Rollup merge of #110563 - bryangarza:refactor-trait-selection-error-reporting, r=compiler-errors
Break up long function in trait selection error reporting + clean up nearby code - Move blocks of code into their own functions - Replace a few function argument types with their type aliases - Create "AppendConstMessage" enum to replace a nested `Option`.
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5f33a8c026
6 changed files with 680 additions and 441 deletions
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@ -123,7 +123,7 @@ pub struct FulfillmentError<'tcx> {
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#[derive(Clone)]
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pub enum FulfillmentErrorCode<'tcx> {
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/// Inherently impossible to fulfill; this trait is implemented if and only if it is already implemented.
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CodeCycle(Vec<Obligation<'tcx, ty::Predicate<'tcx>>>),
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CodeCycle(Vec<PredicateObligation<'tcx>>),
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CodeSelectionError(SelectionError<'tcx>),
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CodeProjectionError(MismatchedProjectionTypes<'tcx>),
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CodeSubtypeError(ExpectedFound<Ty<'tcx>>, TypeError<'tcx>), // always comes from a SubtypePredicate
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