GHC.Parser.Errors.Types

ghc-lib-parser-9.14.1.20251220: The GHC API, decoupled from GHC versions

Safe Haskell | Ignore
Language | GHC2021

GHC.Parser.Errors.Types

Synopsis

- type PsWarning = PsMessage
- type PsError = PsMessage
- data PsHeaderMessage
  - = PsErrParseLanguagePragma
  - | PsErrUnsupportedExt !String ![String]
  - | PsErrParseOptionsPragma !String
  - | PsErrUnknownOptionsPragma !String
- data PsMessage
  - = PsUnknownMessage (UnknownDiagnosticFor PsMessage)
  - | PsHeaderMessage !PsHeaderMessage
  - | PsWarnBidirectionalFormatChars (NonEmpty (PsLoc, Char, String))
  - | PsWarnTab !Word
  - | PsWarnTransitionalLayout !TransLayoutReason
  - | PsWarnUnrecognisedPragma !String ![String]
  - | PsWarnMisplacedPragma !FileHeaderPragmaType
  - | PsWarnHaddockInvalidPos
  - | PsWarnHaddockIgnoreMulti
  - | PsWarnStarBinder
  - | PsWarnStarIsType
  - | PsWarnImportPreQualified
  - | PsWarnOperatorWhitespaceExtConflict !OperatorWhitespaceSymbol
  - | PsWarnOperatorWhitespace !FastString !OperatorWhitespaceOccurrence
  - | PsWarnViewPatternSignatures !(LPat GhcPs) !(LPat GhcPs)
  - | PsErrLambdaCase
  - | PsErrEmptyLambda
  - | PsErrNumUnderscores !NumUnderscoreReason
  - | PsErrPrimStringInvalidChar
  - | PsErrMissingBlock
  - | PsErrLexer !LexErr !LexErrKind
  - | PsErrSuffixAT
  - | PsErrParse !String !PsErrParseDetails
  - | PsErrCmmLexer
  - | PsErrUnsupportedBoxedSumExpr !(SumOrTuple (HsExpr GhcPs))
  - | PsErrUnsupportedBoxedSumPat !(SumOrTuple (PatBuilder GhcPs))
  - | PsErrUnexpectedQualifiedConstructor !RdrName
  - | PsErrTupleSectionInPat
  - | PsErrIllegalBangPattern !(Pat GhcPs)
  - | PsErrOpFewArgs !StarIsType !RdrName
  - | PsErrImportQualifiedTwice
  - | PsErrSpliceOrQuoteTwice
  - | PsErrImportPostQualified
  - | PsErrIllegalExplicitNamespace !ExplicitNamespaceKeyword
  - | PsErrVarForTyCon !RdrName
  - | PsErrIllegalPatSynExport
  - | PsErrMalformedEntityString
  - | PsErrDotsInRecordUpdate
  - | PsErrPrecedenceOutOfRange !Int
  - | PsErrOverloadedRecordDotInvalid
  - | PsErrOverloadedRecordUpdateNotEnabled
  - | PsErrOverloadedRecordUpdateNoQualifiedFields
  - | PsErrInvalidDataCon !(HsType GhcPs)
  - | PsErrInvalidInfixDataCon !(HsType GhcPs) !RdrName !(HsType GhcPs)
  - | PsErrIllegalPromotionQuoteDataCon !RdrName
  - | PsErrUnpackDataCon
  - | PsErrUnexpectedKindAppInDataCon !DataConBuilder !(HsType GhcPs)
  - | PsErrInvalidRecordCon !(PatBuilder GhcPs)
  - | PsErrIllegalUnboxedStringInPat !(HsLit GhcPs)
  - | PsErrIllegalUnboxedFloatingLitInPat !(HsLit GhcPs)
  - | PsErrDoNotationInPat
  - | PsErrIfThenElseInPat
  - | PsErrLambdaInPat HsLamVariant
  - | PsErrCaseInPat
  - | PsErrLetInPat
  - | PsErrArrowExprInPat !(HsExpr GhcPs)
  - | PsErrArrowCmdInPat !(HsCmd GhcPs)
  - | PsErrArrowCmdInExpr !(HsCmd GhcPs)
  - | PsErrOrPatInExpr !(LPat GhcPs)
  - | PsErrTypeAppWithoutSpace !RdrName !(LHsExpr GhcPs)
  - | PsErrLazyPatWithoutSpace !(LHsExpr GhcPs)
  - | PsErrBangPatWithoutSpace !(LHsExpr GhcPs)
  - | PsErrUnallowedPragma !(HsPragE GhcPs)
  - | PsErrQualifiedDoInCmd !ModuleName
  - | PsErrInvalidInfixHole
  - | PsErrSemiColonsInCondExpr !(HsExpr GhcPs) !Bool !(HsExpr GhcPs) !Bool !(HsExpr GhcPs)
  - | PsErrSemiColonsInCondCmd !(HsExpr GhcPs) !Bool !(HsCmd GhcPs) !Bool !(HsCmd GhcPs)
  - | PsErrAtInPatPos
  - | PsErrCaseCmdInFunAppCmd !(LHsCmd GhcPs)
  - | PsErrLambdaCmdInFunAppCmd !HsLamVariant !(LHsCmd GhcPs)
  - | PsErrIfCmdInFunAppCmd !(LHsCmd GhcPs)
  - | PsErrLetCmdInFunAppCmd !(LHsCmd GhcPs)
  - | PsErrDoCmdInFunAppCmd !(LHsCmd GhcPs)
  - | PsErrDoInFunAppExpr !(Maybe ModuleName) !(LHsExpr GhcPs)
  - | PsErrMDoInFunAppExpr !(Maybe ModuleName) !(LHsExpr GhcPs)
  - | PsErrCaseInFunAppExpr !(LHsExpr GhcPs)
  - | PsErrLambdaInFunAppExpr !HsLamVariant !(LHsExpr GhcPs)
  - | PsErrLetInFunAppExpr !(LHsExpr GhcPs)
  - | PsErrIfInFunAppExpr !(LHsExpr GhcPs)
  - | PsErrProcInFunAppExpr !(LHsExpr GhcPs)
  - | PsErrMalformedTyOrClDecl !(LHsType GhcPs)
  - | PsErrIllegalWhereInDataDecl
  - | PsErrIllegalDataTypeContext !(LHsContext GhcPs)
  - | PsErrParseErrorOnInput !OccName
  - | PsErrMalformedDecl !SDoc !RdrName
  - | PsErrNotADataCon !RdrName
  - | PsErrRecordSyntaxInPatSynDecl !(LPat GhcPs)
  - | PsErrEmptyWhereInPatSynDecl !RdrName
  - | PsErrInvalidWhereBindInPatSynDecl !RdrName !(HsDecl GhcPs)
  - | PsErrNoSingleWhereBindInPatSynDecl !RdrName !(HsDecl GhcPs)
  - | PsErrDeclSpliceNotAtTopLevel !(SpliceDecl GhcPs)
  - | PsErrInferredTypeVarNotAllowed
  - | PsErrMultipleNamesInStandaloneKindSignature [LIdP GhcPs]
  - | PsErrIllegalImportBundleForm
  - | PsErrIllegalRoleName !FastString [Role]
  - | PsErrInvalidTypeSignature !PsInvalidTypeSignature !(LHsExpr GhcPs)
  - | PsErrUnexpectedTypeInDecl !(LHsType GhcPs) !SDoc !RdrName [LHsTypeArg GhcPs] !SDoc
  - | PsErrExpectedHyphen
  - | PsErrSpaceInSCC
  - | PsErrEmptyDoubleQuotes !Bool
  - | PsErrInvalidPackageName !FastString
  - | PsErrInvalidRuleActivationMarker
  - | PsErrLinearFunction
  - | PsErrMultiWayIf
  - | PsErrExplicitForall !Bool
  - | PsErrIllegalQualifiedDo !SDoc
  - | PsErrCmmParser !CmmParserError
  - | PsErrIllegalTraditionalRecordSyntax !SDoc
  - | PsErrParseErrorInCmd !SDoc
  - | PsErrInPat !(PatBuilder GhcPs) !PsErrInPatDetails
  - | PsErrParseRightOpSectionInPat !RdrName !(PatBuilder GhcPs)
  - | PsErrIllegalGadtRecordMultiplicity !(HsMultAnn GhcPs)
  - | PsErrInvalidCApiImport
  - | PsErrMultipleConForNewtype !RdrName !Int
  - | PsErrUnicodeCharLooksLike Char Char String
  - | PsErrInvalidPun !PsErrPunDetails
  - | PsErrIllegalOrPat (LPat GhcPs)
  - | PsErrTypeSyntaxInPat !PsErrTypeSyntaxDetails
  - | PsErrSpecExprMultipleTypeAscription
  - | PsWarnSpecMultipleTypeAscription
  - | PsWarnPatternNamespaceSpecifier !Bool
- data PsErrParseDetails = PsErrParseDetails {
  - ped_th_enabled :: !Bool
  - ped_do_in_last_100 :: !Bool
  - ped_mdo_in_last_100 :: !Bool
  - ped_pat_syn_enabled :: !Bool
  - ped_pattern_parsed :: !Bool
  }
- data PsInvalidTypeSignature
  - = PsErrInvalidTypeSig_Qualified
  - | PsErrInvalidTypeSig_DataCon
  - | PsErrInvalidTypeSig_Other
- data PatIsRecursive
  - = YesPatIsRecursive
  - | NoPatIsRecursive
- data PatIncompleteDoBlock
  - = YesIncompleteDoBlock
  - | NoIncompleteDoBlock
- data ParseContext = ParseContext {
  - is_infix :: !(Maybe RdrName)
  - incomplete_do_block :: !PatIncompleteDoBlock
  }
- data PsErrInPatDetails
  - = PEIP_NegApp
  - | PEIP_RecPattern [LPat GhcPs] !PatIsRecursive !ParseContext
  - | PEIP_OtherPatDetails !ParseContext
- data PsErrPunDetails
  - = PEP_QuoteDisambiguation
  - | PEP_TupleSyntaxType
  - | PEP_SumSyntaxType
- data PsErrTypeSyntaxDetails
  - = PETS_FunctionArrow !(LocatedA (PatBuilder GhcPs)) !(HsMultAnnOf (LocatedA (PatBuilder GhcPs)) GhcPs) !(LocatedA (PatBuilder GhcPs))
  - | PETS_Multiplicity !(EpToken "%") !(LocatedA (PatBuilder GhcPs))
  - | PETS_ForallTelescope !(HsForAllTelescope GhcPs) !(LocatedA (PatBuilder GhcPs))
  - | PETS_ConstraintContext !(LocatedA (PatBuilder GhcPs))
- noParseContext :: ParseContext
- incompleteDoBlock :: ParseContext
- fromParseContext :: ParseContext -> PsErrInPatDetails
- data NumUnderscoreReason
  - = NumUnderscore_Integral
  - | NumUnderscore_Float
- data LexErrKind
  - = LexErrKind_EOF
  - | LexErrKind_UTF8
  - | LexErrKind_Char !Char
- data LexErr
  - = LexError
  - | LexUnknownPragma
  - | LexErrorInPragma
  - | LexNumEscapeRange
  - | LexUnterminatedComment
  - | LexUnterminatedOptions
  - | LexUnterminatedQQ
- data CmmParserError
  - = CmmUnknownPrimitive !FastString
  - | CmmUnknownMacro !FastString
  - | CmmUnknownCConv !String
  - | CmmUnrecognisedSafety !String
  - | CmmUnrecognisedHint !String
- data TransLayoutReason
  - = TransLayout_Where
  - | TransLayout_Pipe
- data FileHeaderPragmaType
  - = OptionsPrag
  - | IncludePrag
  - | LanguagePrag
  - | DocOptionsPrag

# Documentation

type PsWarning = PsMessage #

type PsError = PsMessage #

data PsHeaderMessage #

Constructors

PsErrParseLanguagePragma |
PsErrUnsupportedExt !String ![String] |
PsErrParseOptionsPragma !String |
PsErrUnknownOptionsPragma !String | PsErrUnsupportedOptionsPragma is an error that occurs when an unknown OPTIONS_GHC pragma is supplied is found. Example(s): {-# OPTIONS_GHC foo #-} Test case(s): testssafeHaskellflags/SafeFlags28 testssafeHaskellflags/SafeFlags19 testssafeHaskellflags/SafeFlags29 testsparsershould_fail/T19923c testsparsershould_fail/T19923b testsparsershould_fail/readFail044 testsdriverT2499

#### Instances

Instances details

Generic PsHeaderMessage # |
Instance details Defined in GHC.Parser.Errors.Types Associated Types
type Rep PsHeaderMessage |
Instance details Defined in GHC.Parser.Errors.Types type Rep PsHeaderMessage = D1 ('MetaData "PsHeaderMessage" "GHC.Parser.Errors.Types" "ghc-lib-parser-9.14.1.20251220-PtFrlL5ZJN3Qo3Axa3c6X" 'False) ((C1 ('MetaCons "PsErrParseLanguagePragma" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrUnsupportedExt" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [String]))) :+: (C1 ('MetaCons "PsErrParseOptionsPragma" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String)) :+: C1 ('MetaCons "PsErrUnknownOptionsPragma" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String))))
Methods from :: PsHeaderMessage -> Rep PsHeaderMessage x # to :: Rep PsHeaderMessage x -> PsHeaderMessage #
type Rep PsHeaderMessage # |
Instance details Defined in GHC.Parser.Errors.Types type Rep PsHeaderMessage = D1 ('MetaData "PsHeaderMessage" "GHC.Parser.Errors.Types" "ghc-lib-parser-9.14.1.20251220-PtFrlL5ZJN3Qo3Axa3c6X" 'False) ((C1 ('MetaCons "PsErrParseLanguagePragma" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrUnsupportedExt" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [String]))) :+: (C1 ('MetaCons "PsErrParseOptionsPragma" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String)) :+: C1 ('MetaCons "PsErrUnknownOptionsPragma" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String))))

data PsMessage #

Constructors

PsUnknownMessage (UnknownDiagnosticFor PsMessage) | An "unknown" message from the parser. This type constructor allows arbitrary messages to be embedded. The typical use case would be GHC plugins willing to emit custom diagnostics.
PsHeaderMessage !PsHeaderMessage | A group of parser messages emitted in `Header`. See Note [Messages from GHC.Parser.Header].
PsWarnBidirectionalFormatChars (NonEmpty (PsLoc, Char, String)) | PsWarnBidirectionalFormatChars is a warning (controlled by the -Wwarn-bidirectional-format-characters flag) that occurs when unicode bi-directional format characters are found within in a file The `PsLoc` contains the exact position in the buffer the character occurred, and the string contains a description of the character.
PsWarnTab | 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
Fields !Word Number of other occurrences other than the first one
PsWarnTransitionalLayout !TransLayoutReason | 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] | Unrecognised pragma. First field is the actual pragma name which might be empty. Second field is the set of valid candidate pragmas.
PsWarnMisplacedPragma !FileHeaderPragmaType |
PsWarnHaddockInvalidPos | Invalid Haddock comment position
PsWarnHaddockIgnoreMulti | Multiple Haddock comment for the same entity
PsWarnStarBinder | Found binding occurrence of "*" while StarIsType is enabled
PsWarnStarIsType | Using "*" for Type without StarIsType enabled
PsWarnImportPreQualified | Pre qualified import with `WarnPrepositiveQualifiedModule` enabled
PsWarnOperatorWhitespaceExtConflict !OperatorWhitespaceSymbol |
PsWarnOperatorWhitespace !FastString !OperatorWhitespaceOccurrence |
PsWarnViewPatternSignatures !(LPat GhcPs) !(LPat GhcPs) | 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
PsErrLambdaCase | LambdaCase syntax used without the extension enabled
PsErrEmptyLambda | A lambda requires at least one parameter
PsErrNumUnderscores !NumUnderscoreReason | Underscores in literals without the extension enabled
PsErrPrimStringInvalidChar | Invalid character in primitive string
PsErrMissingBlock | Missing block
PsErrLexer !LexErr !LexErrKind | Lexer error
PsErrSuffixAT | Suffix occurrence of `@`
PsErrParse !String !PsErrParseDetails | Parse errors
PsErrCmmLexer | Cmm lexer error
PsErrUnsupportedBoxedSumExpr !(SumOrTuple (HsExpr GhcPs)) | Unsupported boxed sum in expression
PsErrUnsupportedBoxedSumPat !(SumOrTuple (PatBuilder GhcPs)) | Unsupported boxed sum in pattern
PsErrUnexpectedQualifiedConstructor !RdrName | Unexpected qualified constructor
PsErrTupleSectionInPat | Tuple section in pattern context
PsErrIllegalBangPattern !(Pat GhcPs) | Bang-pattern without BangPattterns enabled
PsErrOpFewArgs !StarIsType !RdrName | Operator applied to too few arguments
PsErrImportQualifiedTwice | Import: multiple occurrences of `qualified`
PsErrSpliceOrQuoteTwice | Multiple occurrences of a splice or quote keyword
PsErrImportPostQualified | Post qualified import without `ImportQualifiedPost`
PsErrIllegalExplicitNamespace !ExplicitNamespaceKeyword | Explicit namespace keyword without `ExplicitNamespaces`
PsErrVarForTyCon !RdrName | Expecting a type constructor but found a variable
PsErrIllegalPatSynExport | Illegal export form allowed by PatternSynonyms
PsErrMalformedEntityString | Malformed entity string
PsErrDotsInRecordUpdate | Dots used in record update
PsErrPrecedenceOutOfRange !Int | Precedence out of range
PsErrOverloadedRecordDotInvalid | Invalid use of record dot syntax `.`
PsErrOverloadedRecordUpdateNotEnabled | `OverloadedRecordUpdate` is not enabled.
PsErrOverloadedRecordUpdateNoQualifiedFields | Can't use qualified fields when OverloadedRecordUpdate is enabled.
PsErrInvalidDataCon !(HsType GhcPs) | Cannot parse data constructor in a data/newtype declaration
PsErrInvalidInfixDataCon !(HsType GhcPs) !RdrName !(HsType GhcPs) | Cannot parse data constructor in a data/newtype declaration
PsErrIllegalPromotionQuoteDataCon !RdrName | Illegal DataKinds quote mark in data/newtype constructor declaration
PsErrUnpackDataCon | UNPACK applied to a data constructor
PsErrUnexpectedKindAppInDataCon !DataConBuilder !(HsType GhcPs) | Unexpected kind application in data/newtype declaration
PsErrInvalidRecordCon !(PatBuilder GhcPs) | Not a record constructor
PsErrIllegalUnboxedStringInPat !(HsLit GhcPs) | Illegal unboxed string literal in pattern
PsErrIllegalUnboxedFloatingLitInPat !(HsLit GhcPs) | Illegal primitive floating point literal in pattern
PsErrDoNotationInPat | Do-notation in pattern
PsErrIfThenElseInPat | If-then-else syntax in pattern
PsErrLambdaInPat HsLamVariant | Lambda or Lambda-case in pattern
PsErrCaseInPat | case..of in pattern
PsErrLetInPat | let-syntax in pattern
PsErrArrowExprInPat !(HsExpr GhcPs) | Arrow expression-syntax in pattern
PsErrArrowCmdInPat !(HsCmd GhcPs) | Arrow command-syntax in pattern
PsErrArrowCmdInExpr !(HsCmd GhcPs) | Arrow command-syntax in expression
PsErrOrPatInExpr !(LPat GhcPs) | Or-pattern in expression
PsErrTypeAppWithoutSpace !RdrName !(LHsExpr GhcPs) | Type-application without space before `@`
PsErrLazyPatWithoutSpace !(LHsExpr GhcPs) | Lazy-pattern (`~`) without space after it
PsErrBangPatWithoutSpace !(LHsExpr GhcPs) | Bang-pattern (`!`) without space after it
PsErrUnallowedPragma !(HsPragE GhcPs) | Pragma not allowed in this position
PsErrQualifiedDoInCmd !ModuleName | Qualified do block in command
PsErrInvalidInfixHole | Invalid infix hole, expected an infix operator
PsErrSemiColonsInCondExpr | Unexpected semi-colons in conditional expression
Fields !(HsExpr GhcPs) conditional expr !Bool "then" semi-colon? !(HsExpr GhcPs) "then" expr !Bool "else" semi-colon? !(HsExpr GhcPs) "else" expr
PsErrSemiColonsInCondCmd | Unexpected semi-colons in conditional command
Fields !(HsExpr GhcPs) conditional expr !Bool "then" semi-colon? !(HsCmd GhcPs) "then" expr !Bool "else" semi-colon? !(HsCmd GhcPs) "else" expr
PsErrAtInPatPos | @-operator in a pattern position
PsErrCaseCmdInFunAppCmd !(LHsCmd GhcPs) | Unexpected case command in function application
PsErrLambdaCmdInFunAppCmd !HsLamVariant !(LHsCmd GhcPs) | Unexpected lambda or case(s) command in function application
PsErrIfCmdInFunAppCmd !(LHsCmd GhcPs) | Unexpected if command in function application
PsErrLetCmdInFunAppCmd !(LHsCmd GhcPs) | Unexpected let command in function application
PsErrDoCmdInFunAppCmd !(LHsCmd GhcPs) | Unexpected do command in function application
PsErrDoInFunAppExpr !(Maybe ModuleName) !(LHsExpr GhcPs) | Unexpected do block in function application
PsErrMDoInFunAppExpr !(Maybe ModuleName) !(LHsExpr GhcPs) | Unexpected mdo block in function application
PsErrCaseInFunAppExpr !(LHsExpr GhcPs) | Unexpected case expression in function application
PsErrLambdaInFunAppExpr !HsLamVariant !(LHsExpr GhcPs) | Unexpected lambda or case(s) expression in function application
PsErrLetInFunAppExpr !(LHsExpr GhcPs) | Unexpected let expression in function application
PsErrIfInFunAppExpr !(LHsExpr GhcPs) | Unexpected if expression in function application
PsErrProcInFunAppExpr !(LHsExpr GhcPs) | Unexpected proc expression in function application
PsErrMalformedTyOrClDecl !(LHsType GhcPs) | Malformed head of type or class declaration
PsErrIllegalWhereInDataDecl | Illegal 'where' keyword in data declaration
PsErrIllegalDataTypeContext !(LHsContext GhcPs) | Illegal datatype context
PsErrParseErrorOnInput !OccName | Parse error on input
PsErrMalformedDecl !SDoc !RdrName | Malformed ... declaration for ...
PsErrNotADataCon !RdrName | Not a data constructor
PsErrRecordSyntaxInPatSynDecl !(LPat GhcPs) | Record syntax used in pattern synonym declaration
PsErrEmptyWhereInPatSynDecl !RdrName | Empty 'where' clause in pattern-synonym declaration
PsErrInvalidWhereBindInPatSynDecl !RdrName !(HsDecl GhcPs) | Invalid binding name in 'where' clause of pattern-synonym declaration
PsErrNoSingleWhereBindInPatSynDecl !RdrName !(HsDecl GhcPs) | Multiple bindings in 'where' clause of pattern-synonym declaration
PsErrDeclSpliceNotAtTopLevel !(SpliceDecl GhcPs) | Declaration splice not a top-level
PsErrInferredTypeVarNotAllowed | Inferred type variables not allowed here
PsErrMultipleNamesInStandaloneKindSignature [LIdP GhcPs] | Multiple names in standalone kind signatures
PsErrIllegalImportBundleForm | Illegal import bundle form
PsErrIllegalRoleName !FastString [Role] | Illegal role name
PsErrInvalidTypeSignature !PsInvalidTypeSignature !(LHsExpr GhcPs) | Invalid type signature
PsErrUnexpectedTypeInDecl !(LHsType GhcPs) !SDoc !RdrName [LHsTypeArg GhcPs] !SDoc | Unexpected type in declaration
PsErrExpectedHyphen | Expected a hyphen
PsErrSpaceInSCC | Found a space in a SCC
PsErrEmptyDoubleQuotes | Found two single quotes
Fields !Bool Is TH on?
PsErrInvalidPackageName !FastString | Invalid package name
PsErrInvalidRuleActivationMarker | Invalid rule activation marker
PsErrLinearFunction | Linear function found but LinearTypes not enabled
PsErrMultiWayIf | Multi-way if-expression found but MultiWayIf not enabled
PsErrExplicitForall | Explicit forall found but no extension allowing it is enabled
Fields !Bool is Unicode forall?
PsErrIllegalQualifiedDo !SDoc | Found qualified-do without QualifiedDo enabled
PsErrCmmParser !CmmParserError | Cmm parser error
PsErrIllegalTraditionalRecordSyntax !SDoc | Illegal traditional record syntax TODO: distinguish errors without using SDoc
PsErrParseErrorInCmd !SDoc | Parse error in command TODO: distinguish errors without using SDoc
PsErrInPat !(PatBuilder GhcPs) !PsErrInPatDetails | Parse error in pattern
PsErrParseRightOpSectionInPat !RdrName !(PatBuilder GhcPs) | Parse error in right operator section pattern TODO: embed the proper operator, if possible
PsErrIllegalGadtRecordMultiplicity !(HsMultAnn GhcPs) | Illegal linear arrow or multiplicity annotation in GADT record syntax
PsErrInvalidCApiImport |
PsErrMultipleConForNewtype !RdrName !Int |
PsErrUnicodeCharLooksLike |
Fields Char the problematic character Char the character it looks like String the name of the character that it looks like
PsErrInvalidPun !PsErrPunDetails |
PsErrIllegalOrPat (LPat GhcPs) | Or pattern used without -XOrPatterns
PsErrTypeSyntaxInPat !PsErrTypeSyntaxDetails | Temporary error until GHC gains support for type syntax in patterns. Test cases: T24159_pat_parse_error_1 T24159_pat_parse_error_2 T24159_pat_parse_error_3 T24159_pat_parse_error_4 T24159_pat_parse_error_5 T24159_pat_parse_error_6
PsErrSpecExprMultipleTypeAscription | `PsErrSpecExprMultipleTypeAscription` is an error that occurs when a user attempts to use the new form SPECIALISE pragma syntax with multiple type signatures, e.g. @{-# SPECIALISE foo 3 :: Float -> Float; Double -> Double #-}
PsWarnSpecMultipleTypeAscription | `PsWarnSpecMultipleTypeAscription` is a warning that occurs when a user uses the old-form SPECIALISE pragma syntax with multiple type signatures, e.g. @{-# SPECIALISE bar :: Float -> Float; Double -> Double #-} This constructor is deprecated and will be removed in GHC 9.18.
PsWarnPatternNamespaceSpecifier | The deprecated ``pattern`` namespace specifier was used in an import or export list. Suggested fix: use the ``data`` keyword instead.
Fields !Bool Is ExplicitNamespaces on?

#### Instances

Instances details

Generic PsMessage # |
Instance details Defined in GHC.Parser.Errors.Types Associated Types
type Rep PsMessage |
Instance details Defined in GHC.Parser.Errors.Types type Rep PsMessage = D1 ('MetaData "PsMessage" "GHC.Parser.Errors.Types" "ghc-lib-parser-9.14.1.20251220-PtFrlL5ZJN3Qo3Axa3c6X" 'False) ((((((C1 ('MetaCons "PsUnknownMessage" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (UnknownDiagnosticFor PsMessage))) :+: (C1 ('MetaCons "PsHeaderMessage" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 PsHeaderMessage)) :+: C1 ('MetaCons "PsWarnBidirectionalFormatChars" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (NonEmpty (PsLoc, Char, String)))))) :+: ((C1 ('MetaCons "PsWarnTab" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)) :+: C1 ('MetaCons "PsWarnTransitionalLayout" 'PrefixI 'False) (S1 ('MetaSel 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('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 RdrName))))))) :+: ((((C1 ('MetaCons "PsErrImportQualifiedTwice" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "PsErrSpliceOrQuoteTwice" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrImportPostQualified" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "PsErrIllegalExplicitNamespace" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 ExplicitNamespaceKeyword)) :+: C1 ('MetaCons "PsErrVarForTyCon" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 RdrName))) :+: (C1 ('MetaCons "PsErrIllegalPatSynExport" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrMalformedEntityString" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: (((C1 ('MetaCons "PsErrDotsInRecordUpdate" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons 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('MetaCons "PsErrLambdaCmdInFunAppCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HsLamVariant) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsCmd GhcPs))) :+: C1 ('MetaCons "PsErrIfCmdInFunAppCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsCmd GhcPs))))) :+: ((C1 ('MetaCons "PsErrLetCmdInFunAppCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsCmd GhcPs))) :+: C1 ('MetaCons "PsErrDoCmdInFunAppCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsCmd GhcPs)))) :+: (C1 ('MetaCons "PsErrDoInFunAppExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe ModuleName)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsExpr GhcPs))) :+: C1 ('MetaCons "PsErrMDoInFunAppExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe ModuleName)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsExpr GhcPs))))))) :+: (((C1 ('MetaCons "PsErrCaseInFunAppExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsExpr GhcPs))) :+: (C1 ('MetaCons "PsErrLambdaInFunAppExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HsLamVariant) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsExpr GhcPs))) :+: C1 ('MetaCons "PsErrLetInFunAppExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 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'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrIllegalRoleName" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 FastString) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 [Role]))) :+: (C1 ('MetaCons "PsErrInvalidTypeSignature" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 PsInvalidTypeSignature) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsExpr GhcPs))) :+: C1 ('MetaCons "PsErrUnexpectedTypeInDecl" 'PrefixI 'False) ((S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsType GhcPs)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 SDoc)) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 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Methods from :: PsMessage -> Rep PsMessage x # to :: Rep PsMessage x -> PsMessage #
Diagnostic PsMessage # |
Instance details Defined in GHC.Parser.Errors.Ppr Associated Types
type DiagnosticOpts PsMessage |
Instance details Defined in GHC.Parser.Errors.Ppr type DiagnosticOpts PsMessage = NoDiagnosticOpts
type DiagnosticHint PsMessage |
Instance details Defined in GHC.Parser.Errors.Ppr type DiagnosticHint PsMessage = GhcHint
Methods diagnosticMessage :: DiagnosticOpts PsMessage -> PsMessage -> DecoratedSDoc # diagnosticReason :: PsMessage -> DiagnosticReason # diagnosticHints :: PsMessage -> [DiagnosticHint PsMessage] # diagnosticCode :: PsMessage -> Maybe DiagnosticCode #
type Rep PsMessage # |
Instance details Defined in GHC.Parser.Errors.Types type Rep PsMessage = D1 ('MetaData "PsMessage" "GHC.Parser.Errors.Types" "ghc-lib-parser-9.14.1.20251220-PtFrlL5ZJN3Qo3Axa3c6X" 'False) ((((((C1 ('MetaCons "PsUnknownMessage" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (UnknownDiagnosticFor PsMessage))) :+: (C1 ('MetaCons "PsHeaderMessage" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 PsHeaderMessage)) :+: C1 ('MetaCons "PsWarnBidirectionalFormatChars" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (NonEmpty (PsLoc, Char, String)))))) :+: ((C1 ('MetaCons "PsWarnTab" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Word)) :+: C1 ('MetaCons "PsWarnTransitionalLayout" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 TransLayoutReason))) :+: (C1 ('MetaCons "PsWarnUnrecognisedPragma" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 [String])) :+: C1 ('MetaCons "PsWarnMisplacedPragma" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 FileHeaderPragmaType))))) :+: (((C1 ('MetaCons "PsWarnHaddockInvalidPos" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsWarnHaddockIgnoreMulti" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PsWarnStarBinder" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsWarnStarIsType" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "PsWarnImportPreQualified" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons 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(S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 NumUnderscoreReason)))) :+: ((C1 ('MetaCons "PsErrPrimStringInvalidChar" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrMissingBlock" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PsErrLexer" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 LexErr) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 LexErrKind)) :+: C1 ('MetaCons "PsErrSuffixAT" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: (((C1 ('MetaCons "PsErrParse" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 String) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 PsErrParseDetails)) :+: C1 ('MetaCons "PsErrCmmLexer" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PsErrUnsupportedBoxedSumExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (SumOrTuple (HsExpr GhcPs)))) :+: C1 ('MetaCons "PsErrUnsupportedBoxedSumPat" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (SumOrTuple (PatBuilder GhcPs)))))) :+: ((C1 ('MetaCons "PsErrUnexpectedQualifiedConstructor" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 RdrName)) :+: C1 ('MetaCons "PsErrTupleSectionInPat" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PsErrIllegalBangPattern" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Pat GhcPs))) :+: C1 ('MetaCons "PsErrOpFewArgs" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 StarIsType) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 RdrName))))))) :+: ((((C1 ('MetaCons "PsErrImportQualifiedTwice" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "PsErrSpliceOrQuoteTwice" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrImportPostQualified" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "PsErrIllegalExplicitNamespace" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 ExplicitNamespaceKeyword)) :+: C1 ('MetaCons "PsErrVarForTyCon" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 RdrName))) :+: (C1 ('MetaCons "PsErrIllegalPatSynExport" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrMalformedEntityString" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: (((C1 ('MetaCons "PsErrDotsInRecordUpdate" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrPrecedenceOutOfRange" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Int))) :+: (C1 ('MetaCons "PsErrOverloadedRecordDotInvalid" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrOverloadedRecordUpdateNotEnabled" 'PrefixI 'False) (U1 :: Type -> Type))) :+: ((C1 ('MetaCons "PsErrOverloadedRecordUpdateNoQualifiedFields" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrInvalidDataCon" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsType GhcPs)))) :+: (C1 ('MetaCons "PsErrInvalidInfixDataCon" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsType GhcPs)) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 RdrName) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsType GhcPs)))) :+: C1 ('MetaCons "PsErrIllegalPromotionQuoteDataCon" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 RdrName)))))) :+: (((C1 ('MetaCons "PsErrUnpackDataCon" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "PsErrUnexpectedKindAppInDataCon" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 DataConBuilder) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsType GhcPs))) :+: C1 ('MetaCons "PsErrInvalidRecordCon" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (PatBuilder GhcPs))))) :+: ((C1 ('MetaCons "PsErrIllegalUnboxedStringInPat" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsLit GhcPs))) :+: C1 ('MetaCons "PsErrIllegalUnboxedFloatingLitInPat" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsLit GhcPs)))) :+: (C1 ('MetaCons "PsErrDoNotationInPat" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrIfThenElseInPat" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: (((C1 ('MetaCons "PsErrLambdaInPat" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 HsLamVariant)) :+: C1 ('MetaCons "PsErrCaseInPat" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PsErrLetInPat" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrArrowExprInPat" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsExpr GhcPs))))) :+: ((C1 ('MetaCons "PsErrArrowCmdInPat" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsCmd 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(LHsExpr GhcPs))) :+: C1 ('MetaCons "PsErrUnallowedPragma" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsPragE GhcPs))))) :+: ((C1 ('MetaCons "PsErrQualifiedDoInCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 ModuleName)) :+: C1 ('MetaCons "PsErrInvalidInfixHole" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PsErrSemiColonsInCondExpr" 'PrefixI 'False) ((S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsExpr GhcPs)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Bool)) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsExpr GhcPs)) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Bool) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsExpr GhcPs))))) :+: C1 ('MetaCons "PsErrSemiColonsInCondCmd" 'PrefixI 'False) ((S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsExpr GhcPs)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Bool)) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsCmd GhcPs)) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Bool) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsCmd GhcPs)))))))) :+: (((C1 ('MetaCons "PsErrAtInPatPos" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrCaseCmdInFunAppCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsCmd GhcPs)))) :+: (C1 ('MetaCons "PsErrLambdaCmdInFunAppCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HsLamVariant) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsCmd GhcPs))) :+: C1 ('MetaCons "PsErrIfCmdInFunAppCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsCmd GhcPs))))) :+: ((C1 ('MetaCons "PsErrLetCmdInFunAppCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsCmd GhcPs))) :+: C1 ('MetaCons "PsErrDoCmdInFunAppCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsCmd GhcPs)))) :+: (C1 ('MetaCons "PsErrDoInFunAppExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe ModuleName)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsExpr GhcPs))) :+: C1 ('MetaCons "PsErrMDoInFunAppExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (Maybe ModuleName)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsExpr GhcPs))))))) :+: (((C1 ('MetaCons "PsErrCaseInFunAppExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsExpr GhcPs))) :+: (C1 ('MetaCons "PsErrLambdaInFunAppExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 HsLamVariant) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsExpr GhcPs))) :+: C1 ('MetaCons "PsErrLetInFunAppExpr" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 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'SourceStrict 'DecidedStrict) (Rec0 RdrName) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsDecl GhcPs))) :+: C1 ('MetaCons "PsErrNoSingleWhereBindInPatSynDecl" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 RdrName) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (HsDecl GhcPs)))))))) :+: ((((C1 ('MetaCons "PsErrDeclSpliceNotAtTopLevel" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (SpliceDecl GhcPs))) :+: (C1 ('MetaCons "PsErrInferredTypeVarNotAllowed" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrMultipleNamesInStandaloneKindSignature" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 [LIdP GhcPs])))) :+: ((C1 ('MetaCons "PsErrIllegalImportBundleForm" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrIllegalRoleName" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 FastString) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 [Role]))) :+: (C1 ('MetaCons "PsErrInvalidTypeSignature" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 PsInvalidTypeSignature) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsExpr GhcPs))) :+: C1 ('MetaCons "PsErrUnexpectedTypeInDecl" 'PrefixI 'False) ((S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 (LHsType GhcPs)) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 SDoc)) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 RdrName) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 [LHsTypeArg GhcPs]) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 SDoc))))))) :+: (((C1 ('MetaCons "PsErrExpectedHyphen" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrSpaceInSCC" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PsErrEmptyDoubleQuotes" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Bool)) :+: C1 ('MetaCons "PsErrInvalidPackageName" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 FastString)))) :+: ((C1 ('MetaCons "PsErrInvalidRuleActivationMarker" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrLinearFunction" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PsErrMultiWayIf" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsErrExplicitForall" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Bool)))))) :+: ((((C1 ('MetaCons "PsErrIllegalQualifiedDo" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 SDoc)) :+: C1 ('MetaCons "PsErrCmmParser" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 CmmParserError))) :+: (C1 ('MetaCons "PsErrIllegalTraditionalRecordSyntax" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 SDoc)) :+: C1 ('MetaCons "PsErrParseErrorInCmd" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 SDoc)))) :+: ((C1 ('MetaCons "PsErrInPat" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 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'DecidedStrict) (Rec0 Int)) :+: C1 ('MetaCons "PsErrUnicodeCharLooksLike" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Char) :*: (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Char) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 String)))) :+: (C1 ('MetaCons "PsErrInvalidPun" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 PsErrPunDetails)) :+: C1 ('MetaCons "PsErrIllegalOrPat" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (LPat GhcPs))))) :+: ((C1 ('MetaCons "PsErrTypeSyntaxInPat" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 PsErrTypeSyntaxDetails)) :+: C1 ('MetaCons "PsErrSpecExprMultipleTypeAscription" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "PsWarnSpecMultipleTypeAscription" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "PsWarnPatternNamespaceSpecifier" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Bool)))))))))
type DiagnosticHint PsMessage # |
Instance details Defined in GHC.Parser.Errors.Ppr type DiagnosticHint PsMessage = GhcHint
type DiagnosticOpts PsMessage # |
Instance details Defined in GHC.Parser.Errors.Ppr type DiagnosticOpts PsMessage = NoDiagnosticOpts

data PsErrParseDetails #

Extra details about a parse error, which helps us in determining which should be the hints to suggest.

Constructors

PsErrParseDetails |
Fields ped_th_enabled :: !Bool ped_do_in_last_100 :: !Bool Is there a 'do' in the last 100 characters? ped_mdo_in_last_100 :: !Bool Is there an `mdo` in the last 100 characters? ped_pat_syn_enabled :: !Bool Is `PatternSynonyms` enabled? ped_pattern_parsed :: !Bool Did we parse a "pattern" keyword?

data PsInvalidTypeSignature #

Constructors

PsErrInvalidTypeSig_Qualified |
PsErrInvalidTypeSig_DataCon |
PsErrInvalidTypeSig_Other |

data PatIsRecursive #

Is the parsed pattern recursive?

Constructors

YesPatIsRecursive |
NoPatIsRecursive |

data PatIncompleteDoBlock #

Constructors

YesIncompleteDoBlock |
NoIncompleteDoBlock |

#### Instances

Instances details

Eq PatIncompleteDoBlock # |
Instance details Defined in GHC.Parser.Errors.Types Methods (==) :: PatIncompleteDoBlock -> PatIncompleteDoBlock -> Bool # (/=) :: PatIncompleteDoBlock -> PatIncompleteDoBlock -> Bool #

data ParseContext #

Extra information for the expression GHC is currently inspecting/parsing. It can be used to generate more informative parser diagnostics and hints.

Constructors

ParseContext |
Fields is_infix :: !(Maybe RdrName) If `Just`, this is an infix pattern with the bound operator name incomplete_do_block :: !PatIncompleteDoBlock Did the parser likely fail due to an incomplete do block?

#### Instances

Instances details

Eq ParseContext # |
Instance details Defined in GHC.Parser.Errors.Types Methods (==) :: ParseContext -> ParseContext -> Bool # (/=) :: ParseContext -> ParseContext -> Bool #

data PsErrInPatDetails #

Constructors

PEIP_NegApp | Negative application pattern?
PEIP_RecPattern |
Fields [LPat GhcPs] The pattern arguments !PatIsRecursive Is the parsed pattern recursive? !ParseContext
PEIP_OtherPatDetails !ParseContext |

data PsErrPunDetails #

Constructors

PEP_QuoteDisambiguation |
PEP_TupleSyntaxType |
PEP_SumSyntaxType |

data PsErrTypeSyntaxDetails #

Constructors

PETS_FunctionArrow !(LocatedA (PatBuilder GhcPs)) !(HsMultAnnOf (LocatedA (PatBuilder GhcPs)) GhcPs) !(LocatedA (PatBuilder GhcPs)) |
PETS_Multiplicity !(EpToken "%") !(LocatedA (PatBuilder GhcPs)) |
PETS_ForallTelescope !(HsForAllTelescope GhcPs) !(LocatedA (PatBuilder GhcPs)) |
PETS_ConstraintContext !(LocatedA (PatBuilder GhcPs)) |

noParseContext :: ParseContext #

incompleteDoBlock :: ParseContext #

fromParseContext :: ParseContext -> PsErrInPatDetails #

Builds a `PsErrInPatDetails` with the information provided by the `ParseContext`.

data NumUnderscoreReason #

Constructors

NumUnderscore_Integral |
NumUnderscore_Float |

#### Instances

Instances details

Show NumUnderscoreReason # |
Instance details Defined in GHC.Parser.Errors.Types Methods showsPrec :: Int -> NumUnderscoreReason -> ShowS # show :: NumUnderscoreReason -> String # showList :: [NumUnderscoreReason] -> ShowS #
Eq NumUnderscoreReason # |
Instance details Defined in GHC.Parser.Errors.Types Methods (==) :: NumUnderscoreReason -> NumUnderscoreReason -> Bool # (/=) :: NumUnderscoreReason -> NumUnderscoreReason -> Bool #
Ord NumUnderscoreReason # |
Instance details Defined in GHC.Parser.Errors.Types Methods compare :: NumUnderscoreReason -> NumUnderscoreReason -> Ordering # (<) :: NumUnderscoreReason -> NumUnderscoreReason -> Bool # (<=) :: NumUnderscoreReason -> NumUnderscoreReason -> Bool # (>) :: NumUnderscoreReason -> NumUnderscoreReason -> Bool # (>=) :: NumUnderscoreReason -> NumUnderscoreReason -> Bool # max :: NumUnderscoreReason -> NumUnderscoreReason -> NumUnderscoreReason # min :: NumUnderscoreReason -> NumUnderscoreReason -> NumUnderscoreReason #

data LexErrKind #

Constructors

LexErrKind_EOF | End of input
LexErrKind_UTF8 | UTF-8 decoding error
LexErrKind_Char !Char | Error at given character

#### Instances

Instances details

Show LexErrKind # |
Instance details Defined in GHC.Parser.Errors.Types Methods showsPrec :: Int -> LexErrKind -> ShowS # show :: LexErrKind -> String # showList :: [LexErrKind] -> ShowS #
Eq LexErrKind # |
Instance details Defined in GHC.Parser.Errors.Types Methods (==) :: LexErrKind -> LexErrKind -> Bool # (/=) :: LexErrKind -> LexErrKind -> Bool #
Ord LexErrKind # |
Instance details Defined in GHC.Parser.Errors.Types Methods compare :: LexErrKind -> LexErrKind -> Ordering # (<) :: LexErrKind -> LexErrKind -> Bool # (<=) :: LexErrKind -> LexErrKind -> Bool # (>) :: LexErrKind -> LexErrKind -> Bool # (>=) :: LexErrKind -> LexErrKind -> Bool # max :: LexErrKind -> LexErrKind -> LexErrKind # min :: LexErrKind -> LexErrKind -> LexErrKind #

data LexErr #

Constructors

LexError | Lexical error
LexUnknownPragma | Unknown pragma
LexErrorInPragma | Lexical error in pragma
LexNumEscapeRange | Numeric escape sequence out of range
LexUnterminatedComment | Unterminated `{-'
LexUnterminatedOptions | Unterminated OPTIONS pragma
LexUnterminatedQQ | Unterminated quasiquotation

#### Instances

Instances details

Show LexErr # |
Instance details Defined in GHC.Parser.Errors.Types Methods showsPrec :: Int -> LexErr -> ShowS # show :: LexErr -> String # showList :: [LexErr] -> ShowS #
Eq LexErr # |
Instance details Defined in GHC.Parser.Errors.Types Methods (==) :: LexErr -> LexErr -> Bool # (/=) :: LexErr -> LexErr -> Bool #
Ord LexErr # |
Instance details Defined in GHC.Parser.Errors.Types Methods compare :: LexErr -> LexErr -> Ordering # (<) :: LexErr -> LexErr -> Bool # (<=) :: LexErr -> LexErr -> Bool # (>) :: LexErr -> LexErr -> Bool # (>=) :: LexErr -> LexErr -> Bool # max :: LexErr -> LexErr -> LexErr # min :: LexErr -> LexErr -> LexErr #

data CmmParserError #

Errors from the Cmm parser

Constructors

CmmUnknownPrimitive !FastString | Unknown Cmm primitive
CmmUnknownMacro !FastString | Unknown macro
CmmUnknownCConv !String | Unknown calling convention
CmmUnrecognisedSafety !String | Unrecognised safety
CmmUnrecognisedHint !String | Unrecognised hint

data TransLayoutReason #

Constructors

TransLayout_Where | "`where' clause at the same depth as implicit layout block"
TransLayout_Pipe | "`|' at the same depth as implicit layout block")

data FileHeaderPragmaType #

Constructors

OptionsPrag |
IncludePrag |
LanguagePrag |
DocOptionsPrag |