8424ddbb3e
This PR improves the “expected type mismatch” error message by omitting the type's types when they are defeq, and putting them into separate lines when not. I found it rather tediuos to parse the error message when the expected type is long, because I had to find the `:` in the middle of a large expression somewhere. Also, when both are of sort `Prop` or `Type` it doesn't add much value to print the sort (and it’s only one hover away anyways).
36 lines
1.7 KiB
Text
36 lines
1.7 KiB
Text
doNotation1.lean:4:0-4:6: error: `y` cannot be mutated, only variables declared using `let mut` can be mutated. If you did not intend to mutate but define `y`, consider using `let y` instead
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doNotation1.lean:8:2-8:18: error: `y` cannot be mutated, only variables declared using `let mut` can be mutated. If you did not intend to mutate but define `y`, consider using `let y` instead
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doNotation1.lean:12:2-12:17: error: `p` cannot be mutated, only variables declared using `let mut` can be mutated. If you did not intend to mutate but define `p`, consider using `let p` instead
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doNotation1.lean:20:7-20:23: error: invalid reassignment, value has type
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Vector' Nat (n + 1)
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but is expected to have type
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Vector' Nat n
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doNotation1.lean:25:7-25:11: error: invalid reassignment, value has type
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Bool
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but is expected to have type
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Nat
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doNotation1.lean:24:0-25:11: error: type mismatch, `for` has type
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PUnit
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but is expected to have type
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List Bool
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doNotation1.lean:28:0-29:14: error: type mismatch, `for` has type
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PUnit
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but is expected to have type
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List Nat
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doNotation1.lean:33:2-33:7: error: invalid `do` element, it must be inside `for`
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doNotation1.lean:37:2-37:10: error: invalid `do` element, it must be inside `for`
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doNotation1.lean:40:0-40:9: error: must be last element in a `do` sequence
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def f10 : Nat → IO Unit :=
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fun x => IO.println x
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doNotation1.lean:51:0-51:13: error: type mismatch
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IO.mkRef true
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has type
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BaseIO (IO.Ref Bool)
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but is expected to have type
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IO Unit
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doNotation1.lean:58:2-58:20: error: type mismatch, result value has type
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Unit
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but is expected to have type
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Bool
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doNotation1.lean:66:0-66:18: error: `do` element is unreachable
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doNotation1.lean:70:0-70:32: error: `do` element is unreachable
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