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Text.Parsec.Language.haskell incorrectly parses floating literal as Double #89

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sol opened this issue Mar 21, 2018 · 1 comment
Open

Text.Parsec.Language.haskell incorrectly parses floating literal as Double #89

sol opened this issue Mar 21, 2018 · 1 comment

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@sol
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sol commented Mar 21, 2018

According to the Haskell 2010 Language Report floating literal should be parsed as Rational. However Text.Parsec.Language.haskell parses them as Double.

To fix this we would need to change the types of TokenParser.float and TokenParser.naturalOrFloat from Double to Rational. This is a breaking change that will also affect other language definitions. Is that an option?
@hvr
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hvr commented Mar 21, 2018

hrm... what about generalising to Fractional r =>?

@sjakobi sjakobi mentioned this issue May 16, 2018
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@hvr @sol