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).
20 lines
407 B
Text
20 lines
407 B
Text
doIssue.lean:2:2-2:3: error: type mismatch
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x
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has type
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Nat
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but is expected to have type
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IO PUnit
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doIssue.lean:10:2-10:13: error: type mismatch
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xs.set! 0 1
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has type
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Array Nat
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but is expected to have type
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IO PUnit
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doIssue.lean:18:7-18:20: error: Application type mismatch: In the application
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pure (xs.set! 0 1)
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the argument
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xs.set! 0 1
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has type
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Array Nat
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but is expected to have type
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PUnit
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