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Within LTS Haskell 24.40 (ghc-9.10.3)
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PsWarnOperatorWhitespace :: FastString -> OperatorWhitespaceOccurrence -> PsMessageghc-lib-parser GHC.Parser.Errors.Types No documentation available.
PsWarnOperatorWhitespaceExtConflict :: OperatorWhitespaceSymbol -> PsMessageghc-lib-parser GHC.Parser.Errors.Types No documentation available.
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ghc-lib-parser GHC.Parser.Errors.Types Found binding occurrence of "*" while StarIsType is enabled
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ghc-lib-parser GHC.Parser.Errors.Types Using "*" for Type without StarIsType enabled
PsWarnTab :: Word -> PsMessageghc-lib-parser GHC.Parser.Errors.Types PsWarnTab is a warning (controlled by the -Wwarn-tabs flag) that occurs when tabulations (tabs) are found within a file. Test case(s): parsershould_failT12610 parsershould_compileT9723b parsershould_compileT9723a parsershould_compileread043 parsershould_failT16270 warningsshould_compileT9230
PsWarnTransitionalLayout :: TransLayoutReason -> PsMessageghc-lib-parser GHC.Parser.Errors.Types PsWarnTransitionalLayout is a warning (controlled by the -Walternative-layout-rule-transitional flag) that occurs when pipes ('|') or 'where' are at the same depth of an implicit layout block. Example(s): f :: IO () f | True = do let x = () y = () return () | True = return () Test case(s): layout/layout006 layout/layout003 layout/layout001
PsWarnUnrecognisedPragma :: String -> [String] -> PsMessageghc-lib-parser GHC.Parser.Errors.Types Unrecognised pragma. First field is the actual pragma name which might be empty. Second field is the set of valid candidate pragmas.
PsWarnViewPatternSignatures :: !LPat GhcPs -> !LPat GhcPs -> PsMessageghc-lib-parser GHC.Parser.Errors.Types PsWarnViewPatternSignatures is a warning triggered by view patterns whose RHS is an unparenthesised pattern signature. It warns on code that is highly likely to break when the precedence of view patterns relative to pattern signatures is changed per GHC Proposal #281. The suggested fix is to add parentheses. Example: f1 (isJust -> True :: Bool) = () Suggested fix: f1 (isJust -> (True :: Bool)) = () Test cases: T24159_viewpat
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ghc-lib-parser GHC.Parser.Errors.Types No documentation available.
pattern
PFailed :: PState -> ParseResult aghc-lib-parser GHC.Parser.Lexer The parser has consumed a (possibly empty) prefix of the input and failed. The carried parsing state can be used to resume parsing. It is the state right before failure, including the fatal parse error. getPsMessages and getPsErrorMessages must return a non-empty bag of errors.