e9a318df16
This PR rewords the "application type mismatch" error message so that the argument and its type precede the application expression.
62 lines
1.1 KiB
Text
62 lines
1.1 KiB
Text
/-!
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# Check types when pretty printing dot notation for structure projections
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In type mismatch errors, the 'object of dot notation' might not be valid for dot notation.
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-/
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structure Foo : Type where
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out : Nat
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/-!
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Was printing `true.out`, but it should have been `Foo.out true`.
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-/
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/--
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error: Application type mismatch: The argument
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true
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has type
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Bool
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but is expected to have type
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Foo
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in the application
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Foo.out true
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---
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info: sorry.out : Nat
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-/
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#guard_msgs in #check Foo.out true
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/-!
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Verifying that generalized field notation does not have this bug.
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-/
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def Foo.out' (f : Foo) : Nat := f.out
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/--
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error: Application type mismatch: The argument
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true
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has type
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Bool
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but is expected to have type
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Foo
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in the application
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Foo.out' true
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---
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info: sorry.out' : Nat
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-/
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#guard_msgs in #check Foo.out' true
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/-!
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Verifying that projection notation still pretty prints as normal.
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-/
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section
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variable (f : Foo)
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/-- info: f.out : Nat -/
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#guard_msgs in #check f.out
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end
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/-!
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Verifying that projection notation still pretty prints through type synonys.
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-/
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section
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def Baz := Foo
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variable (f : Baz)
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/-- info: f.out : Nat -/
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#guard_msgs in #check f.out
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end
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