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Language.Haskell.TH

Synopsis

data Q a
runQ :: Quasi m => Q a -> m a
report :: Bool -> String -> Q ()
recover :: Q a -> Q a -> Q a
reify :: Name -> Q Info
currentModule :: Q String
runIO :: IO a -> Q a
data Name
mkName :: String -> Name
newName :: String -> Q Name
nameBase :: Name -> String
nameModule :: Name -> Maybe String
tupleTypeName :: Int -> Name
tupleDataName :: Int -> Name

data Dec

= FunD Name [Clause]
| ValD Pat Body [Dec]
| DataD Cxt Name [Name] [Con] [Name]
| NewtypeD Cxt Name [Name] Con [Name]
| TySynD Name [Name] Type
| ClassD Cxt Name [Name] [FunDep] [Dec]
| InstanceD Cxt Type [Dec]
| SigD Name Type
| ForeignD Foreign

data Exp

= VarE Name
| ConE Name
| LitE Lit
| AppE Exp Exp
| InfixE (Maybe Exp) Exp (Maybe Exp)
| LamE [Pat] Exp
| TupE [Exp]
| CondE Exp Exp Exp
| LetE [Dec] Exp
| CaseE Exp [Match]
| DoE [Stmt]
| CompE [Stmt]
| ArithSeqE Range
| ListE [Exp]
| SigE Exp Type
| RecConE Name [FieldExp]
| RecUpdE Exp [FieldExp]

data Con

= NormalC Name [StrictType]
| RecC Name [VarStrictType]
| InfixC StrictType Name StrictType
| ForallC [Name] Cxt Con

data Type

= ForallT [Name] Cxt Type
| VarT Name
| ConT Name
| TupleT Int
| ArrowT
| ListT
| AppT Type Type

type Cxt = [Type]
data Match = Match Pat Body [Dec]
data Clause = Clause [Pat] Body [Dec]

data Body

= GuardedB [(Guard, Exp)]
| NormalB Exp

data Guard

= NormalG Exp
| PatG [Stmt]

data Stmt

= BindS Pat Exp
| LetS [Dec]
| NoBindS Exp
| ParS [[Stmt]]

data Range

= FromR Exp
| FromThenR Exp Exp
| FromToR Exp Exp
| FromThenToR Exp Exp Exp

data Lit

= CharL Char
| StringL String
| IntegerL Integer
| RationalL Rational
| IntPrimL Integer
| FloatPrimL Rational
| DoublePrimL Rational

data Pat

= LitP Lit
| VarP Name
| TupP [Pat]
| ConP Name [Pat]
| InfixP Pat Name Pat
| TildeP Pat
| AsP Name Pat
| WildP
| RecP Name [FieldPat]
| ListP [Pat]
| SigP Pat Type

type FieldExp = (Name, Exp)
type FieldPat = (Name, Pat)

data Strict

= IsStrict
| NotStrict

data Foreign

= ImportF Callconv Safety String Name Type
| ExportF Callconv String Name Type

data Callconv

= CCall
| StdCall

data Safety

= Unsafe
| Safe
| Threadsafe

data FunDep = FunDep [Name] [Name]

data Info

= ClassI Dec
| ClassOpI Name Type Name Fixity
| TyConI Dec
| PrimTyConI Name Int Bool
| DataConI Name Type Name Fixity
| VarI Name Type (Maybe Dec) Fixity
| TyVarI Name Type

data Fixity = Fixity Int FixityDirection

data FixityDirection

= InfixL
| InfixR
| InfixN

defaultFixity :: Fixity
maxPrecedence :: Int
type InfoQ = Q Info
type ExpQ = Q Exp
type DecQ = Q Dec
type ConQ = Q Con
type TypeQ = Q Type
type CxtQ = Q Cxt
type MatchQ = Q Match
type ClauseQ = Q Clause
type BodyQ = Q Body
type GuardQ = Q Guard
type StmtQ = Q Stmt
type RangeQ = Q Range
type StrictTypeQ = Q StrictType
type VarStrictTypeQ = Q VarStrictType
type PatQ = Q Pat
type FieldPatQ = Q FieldPat
intPrimL :: Integer -> Lit
floatPrimL :: Rational -> Lit
doublePrimL :: Rational -> Lit
integerL :: Integer -> Lit
charL :: Char -> Lit
stringL :: String -> Lit
rationalL :: Rational -> Lit
litP :: Lit -> PatQ
varP :: Name -> PatQ
tupP :: [PatQ] -> PatQ
conP :: Name -> [PatQ] -> PatQ
infixP :: PatQ -> Name -> PatQ -> PatQ
tildeP :: PatQ -> PatQ
asP :: Name -> PatQ -> PatQ
wildP :: PatQ
recP :: Name -> [FieldPatQ] -> PatQ
listP :: [PatQ] -> PatQ
sigP :: PatQ -> TypeQ -> PatQ
fieldPat :: Name -> PatQ -> FieldPatQ
bindS :: PatQ -> ExpQ -> StmtQ
letS :: [DecQ] -> StmtQ
noBindS :: ExpQ -> StmtQ
parS :: [[StmtQ]] -> StmtQ
fromR :: ExpQ -> RangeQ
fromThenR :: ExpQ -> ExpQ -> RangeQ
fromToR :: ExpQ -> ExpQ -> RangeQ
fromThenToR :: ExpQ -> ExpQ -> ExpQ -> RangeQ
normalB :: ExpQ -> BodyQ
guardedB :: [Q (Guard, Exp)] -> BodyQ
normalG :: ExpQ -> GuardQ
normalGE :: ExpQ -> ExpQ -> Q (Guard, Exp)
patG :: [StmtQ] -> GuardQ
patGE :: [StmtQ] -> ExpQ -> Q (Guard, Exp)
match :: PatQ -> BodyQ -> [DecQ] -> MatchQ
clause :: [PatQ] -> BodyQ -> [DecQ] -> ClauseQ
dyn :: String -> Q Exp
global :: Name -> ExpQ
varE :: Name -> ExpQ
conE :: Name -> ExpQ
litE :: Lit -> ExpQ
appE :: ExpQ -> ExpQ -> ExpQ
infixE :: Maybe ExpQ -> ExpQ -> Maybe ExpQ -> ExpQ
infixApp :: ExpQ -> ExpQ -> ExpQ -> ExpQ
sectionL :: ExpQ -> ExpQ -> ExpQ
sectionR :: ExpQ -> ExpQ -> ExpQ
lamE :: [PatQ] -> ExpQ -> ExpQ
lam1E :: PatQ -> ExpQ -> ExpQ
tupE :: [ExpQ] -> ExpQ
condE :: ExpQ -> ExpQ -> ExpQ -> ExpQ
letE :: [DecQ] -> ExpQ -> ExpQ
caseE :: ExpQ -> [MatchQ] -> ExpQ
doE :: [StmtQ] -> ExpQ
compE :: [StmtQ] -> ExpQ
arithSeqE :: RangeQ -> ExpQ
appsE :: [ExpQ] -> ExpQ
fromE :: ExpQ -> ExpQ
fromThenE :: ExpQ -> ExpQ -> ExpQ
fromToE :: ExpQ -> ExpQ -> ExpQ
fromThenToE :: ExpQ -> ExpQ -> ExpQ -> ExpQ
listE :: [ExpQ] -> ExpQ
sigE :: ExpQ -> TypeQ -> ExpQ
recConE :: Name -> [Q (Name, Exp)] -> ExpQ
recUpdE :: ExpQ -> [Q (Name, Exp)] -> ExpQ
stringE :: String -> ExpQ
fieldExp :: Name -> ExpQ -> Q (Name, Exp)
valD :: PatQ -> BodyQ -> [DecQ] -> DecQ
funD :: Name -> [ClauseQ] -> DecQ
tySynD :: Name -> [Name] -> TypeQ -> DecQ
dataD :: CxtQ -> Name -> [Name] -> [ConQ] -> [Name] -> DecQ
newtypeD :: CxtQ -> Name -> [Name] -> ConQ -> [Name] -> DecQ
classD :: CxtQ -> Name -> [Name] -> [FunDep] -> [DecQ] -> DecQ
instanceD :: CxtQ -> TypeQ -> [DecQ] -> DecQ
sigD :: Name -> TypeQ -> DecQ
forImpD :: Callconv -> Safety -> String -> Name -> TypeQ -> DecQ
cxt :: [TypeQ] -> CxtQ
normalC :: Name -> [StrictTypeQ] -> ConQ
recC :: Name -> [VarStrictTypeQ] -> ConQ
infixC :: Q (Strict, Type) -> Name -> Q (Strict, Type) -> ConQ
forallT :: [Name] -> CxtQ -> TypeQ -> TypeQ
varT :: Name -> TypeQ
conT :: Name -> TypeQ
appT :: TypeQ -> TypeQ -> TypeQ
arrowT :: TypeQ
listT :: TypeQ
tupleT :: Int -> TypeQ
isStrict :: Q Strict
notStrict :: Q Strict
strictType :: Q Strict -> TypeQ -> StrictTypeQ
varStrictType :: Name -> StrictTypeQ -> VarStrictTypeQ
cCall :: Callconv
stdCall :: Callconv
unsafe :: Safety
safe :: Safety
threadsafe :: Safety
class Ppr a where

ppr :: a -> Doc
ppr_list :: [a] -> Doc

pprint :: Ppr a => a -> String
pprExp :: Precedence -> Exp -> Doc
pprLit :: Precedence -> Lit -> Doc
pprPat :: Precedence -> Pat -> Doc
pprParendType :: Type -> Doc

Documentation
data Q a

Instances

Monad Q
Quasi Q

runQ :: Quasi m => Q a -> m a
report :: Bool -> String -> Q ()
recover :: Q a -> Q a -> Q a
reify :: Name -> Q Info
`reify` looks up information about the `Name`
currentModule :: Q String
`currentModule` gives you the name of the module in which this computation is spliced.
runIO :: IO a -> Q a
The `runIO` function lets you run an I/O computation in the `Q` monad. Take care: you are guaranteed the ordering of calls to `runIO` within a single `Q` computation, but not about the order in which splices are run. Note: for various murky reasons, stdout and stderr handles are not necesarily flushed when the compiler finishes running, so you should flush them yourself.
data Name

Instances

Eq Name
Ord Name
Ppr Name
Show Name

mkName :: String -> Name
newName :: String -> Q Name
nameBase :: Name -> String
nameModule :: Name -> Maybe String
tupleTypeName :: Int -> Name
tupleDataName :: Int -> Name
data Dec

Constructors

FunD Name [Clause] |
ValD Pat Body [Dec] |
DataD Cxt Name [Name] [Con] [Name] |
NewtypeD Cxt Name [Name] Con [Name] |
TySynD Name [Name] Type |
ClassD Cxt Name [Name] [FunDep] [Dec] |
InstanceD Cxt Type [Dec] |
SigD Name Type |
ForeignD Foreign |

Instances

Eq Dec
Ppr Dec
Show Dec

data Exp

Constructors

VarE Name |
ConE Name |
LitE Lit |
AppE Exp Exp |
InfixE (Maybe Exp) Exp (Maybe Exp) |
LamE [Pat] Exp |
TupE [Exp] |
CondE Exp Exp Exp |
LetE [Dec] Exp |
CaseE Exp [Match] |
DoE [Stmt] |
CompE [Stmt] |
ArithSeqE Range |
ListE [Exp] |
SigE Exp Type |
RecConE Name [FieldExp] |
RecUpdE Exp [FieldExp] |

Instances

Eq Exp
Ppr Exp
Show Exp

data Con

Constructors

NormalC Name [StrictType] |
RecC Name [VarStrictType] |
InfixC StrictType Name StrictType |
ForallC [Name] Cxt Con |

Instances

Eq Con
Ppr Con
Show Con

data Type

Constructors

ForallT [Name] Cxt Type |
VarT Name |
ConT Name |
TupleT Int |
ArrowT |
ListT |
AppT Type Type |

Instances

Eq Type
Ppr Type
Show Type

type Cxt = [Type]
data Match

Constructors

Match Pat Body [Dec] |

Instances

Eq Match
Ppr Match
Show Match

data Clause

Constructors

Clause [Pat] Body [Dec] |

Instances

Eq Clause
Ppr Clause
Show Clause

data Body

Constructors

GuardedB [(Guard, Exp)] |
NormalB Exp |

Instances

Eq Body
Show Body

data Guard

Constructors

NormalG Exp |
PatG [Stmt] |

Instances

Eq Guard
Show Guard

data Stmt

Constructors

BindS Pat Exp |
LetS [Dec] |
NoBindS Exp |
ParS [[Stmt]] |

Instances

Eq Stmt
Ppr Stmt
Show Stmt

data Range

Constructors

FromR Exp |
FromThenR Exp Exp |
FromToR Exp Exp |
FromThenToR Exp Exp Exp |

Instances

Eq Range
Ppr Range
Show Range

data Lit

Constructors

CharL Char |
StringL String |
IntegerL Integer |
RationalL Rational |
IntPrimL Integer |
FloatPrimL Rational |
DoublePrimL Rational |

Instances

Eq Lit
Show Lit

data Pat

Constructors

LitP Lit |
VarP Name |
TupP [Pat] |
ConP Name [Pat] |
InfixP Pat Name Pat |
TildeP Pat |
AsP Name Pat |
WildP |
RecP Name [FieldPat] |
ListP [Pat] |
SigP Pat Type |

Instances

Eq Pat
Ppr Pat
Show Pat

type FieldExp = (Name, Exp)
type FieldPat = (Name, Pat)
data Strict

Constructors

IsStrict |
NotStrict |

Instances

Eq Strict
Show Strict

data Foreign

Constructors

ImportF Callconv Safety String Name Type |
ExportF Callconv String Name Type |

Instances

Eq Foreign
Ppr Foreign
Show Foreign

data Callconv

Constructors

CCall |
StdCall |

Instances

Eq Callconv
Show Callconv

data Safety

Constructors

Unsafe |
Safe |
Threadsafe |

Instances

Eq Safety
Show Safety

data FunDep

Constructors

FunDep [Name] [Name] |

Instances

Eq FunDep
Ppr FunDep
Show FunDep

data Info

Constructors

ClassI Dec |
ClassOpI Name Type Name Fixity |
TyConI Dec |
PrimTyConI Name Int Bool |
DataConI Name Type Name Fixity |
VarI Name Type (Maybe Dec) Fixity |
TyVarI Name Type |

Instances

Ppr Info
Show Info

data Fixity

Constructors

Fixity Int FixityDirection |

Instances

Eq Fixity
Show Fixity

data FixityDirection

Constructors

InfixL |
InfixR |
InfixN |

Instances

Eq FixityDirection
Show FixityDirection

defaultFixity :: Fixity
maxPrecedence :: Int
type InfoQ = Q Info
type ExpQ = Q Exp
type DecQ = Q Dec
type ConQ = Q Con
type TypeQ = Q Type
type CxtQ = Q Cxt
type MatchQ = Q Match
type ClauseQ = Q Clause
type BodyQ = Q Body
type GuardQ = Q Guard
type StmtQ = Q Stmt
type RangeQ = Q Range
type StrictTypeQ = Q StrictType
type VarStrictTypeQ = Q VarStrictType
type PatQ = Q Pat
type FieldPatQ = Q FieldPat
intPrimL :: Integer -> Lit
floatPrimL :: Rational -> Lit
doublePrimL :: Rational -> Lit
integerL :: Integer -> Lit
charL :: Char -> Lit
stringL :: String -> Lit
rationalL :: Rational -> Lit
litP :: Lit -> PatQ
varP :: Name -> PatQ
tupP :: [PatQ] -> PatQ
conP :: Name -> [PatQ] -> PatQ
infixP :: PatQ -> Name -> PatQ -> PatQ
tildeP :: PatQ -> PatQ
asP :: Name -> PatQ -> PatQ
wildP :: PatQ
recP :: Name -> [FieldPatQ] -> PatQ
listP :: [PatQ] -> PatQ
sigP :: PatQ -> TypeQ -> PatQ
fieldPat :: Name -> PatQ -> FieldPatQ
bindS :: PatQ -> ExpQ -> StmtQ
letS :: [DecQ] -> StmtQ
noBindS :: ExpQ -> StmtQ
parS :: [[StmtQ]] -> StmtQ
fromR :: ExpQ -> RangeQ
fromThenR :: ExpQ -> ExpQ -> RangeQ
fromToR :: ExpQ -> ExpQ -> RangeQ
fromThenToR :: ExpQ -> ExpQ -> ExpQ -> RangeQ
normalB :: ExpQ -> BodyQ
guardedB :: [Q (Guard, Exp)] -> BodyQ
normalG :: ExpQ -> GuardQ
normalGE :: ExpQ -> ExpQ -> Q (Guard, Exp)
patG :: [StmtQ] -> GuardQ
patGE :: [StmtQ] -> ExpQ -> Q (Guard, Exp)
match :: PatQ -> BodyQ -> [DecQ] -> MatchQ
clause :: [PatQ] -> BodyQ -> [DecQ] -> ClauseQ
dyn :: String -> Q Exp
global :: Name -> ExpQ
varE :: Name -> ExpQ
conE :: Name -> ExpQ
litE :: Lit -> ExpQ
appE :: ExpQ -> ExpQ -> ExpQ
infixE :: Maybe ExpQ -> ExpQ -> Maybe ExpQ -> ExpQ
infixApp :: ExpQ -> ExpQ -> ExpQ -> ExpQ
sectionL :: ExpQ -> ExpQ -> ExpQ
sectionR :: ExpQ -> ExpQ -> ExpQ
lamE :: [PatQ] -> ExpQ -> ExpQ
lam1E :: PatQ -> ExpQ -> ExpQ
tupE :: [ExpQ] -> ExpQ
condE :: ExpQ -> ExpQ -> ExpQ -> ExpQ
letE :: [DecQ] -> ExpQ -> ExpQ
caseE :: ExpQ -> [MatchQ] -> ExpQ
doE :: [StmtQ] -> ExpQ
compE :: [StmtQ] -> ExpQ
arithSeqE :: RangeQ -> ExpQ
appsE :: [ExpQ] -> ExpQ
fromE :: ExpQ -> ExpQ
fromThenE :: ExpQ -> ExpQ -> ExpQ
fromToE :: ExpQ -> ExpQ -> ExpQ
fromThenToE :: ExpQ -> ExpQ -> ExpQ -> ExpQ
listE :: [ExpQ] -> ExpQ
sigE :: ExpQ -> TypeQ -> ExpQ
recConE :: Name -> [Q (Name, Exp)] -> ExpQ
recUpdE :: ExpQ -> [Q (Name, Exp)] -> ExpQ
stringE :: String -> ExpQ
fieldExp :: Name -> ExpQ -> Q (Name, Exp)
valD :: PatQ -> BodyQ -> [DecQ] -> DecQ
funD :: Name -> [ClauseQ] -> DecQ
tySynD :: Name -> [Name] -> TypeQ -> DecQ
dataD :: CxtQ -> Name -> [Name] -> [ConQ] -> [Name] -> DecQ
newtypeD :: CxtQ -> Name -> [Name] -> ConQ -> [Name] -> DecQ
classD :: CxtQ -> Name -> [Name] -> [FunDep] -> [DecQ] -> DecQ
instanceD :: CxtQ -> TypeQ -> [DecQ] -> DecQ
sigD :: Name -> TypeQ -> DecQ
forImpD :: Callconv -> Safety -> String -> Name -> TypeQ -> DecQ
cxt :: [TypeQ] -> CxtQ
normalC :: Name -> [StrictTypeQ] -> ConQ
recC :: Name -> [VarStrictTypeQ] -> ConQ
infixC :: Q (Strict, Type) -> Name -> Q (Strict, Type) -> ConQ
forallT :: [Name] -> CxtQ -> TypeQ -> TypeQ
varT :: Name -> TypeQ
conT :: Name -> TypeQ
appT :: TypeQ -> TypeQ -> TypeQ
arrowT :: TypeQ
listT :: TypeQ
tupleT :: Int -> TypeQ
isStrict :: Q Strict
notStrict :: Q Strict
strictType :: Q Strict -> TypeQ -> StrictTypeQ
varStrictType :: Name -> StrictTypeQ -> VarStrictTypeQ
cCall :: Callconv
stdCall :: Callconv
unsafe :: Safety
safe :: Safety
threadsafe :: Safety
class Ppr a where

Methods

ppr :: a -> Doc
ppr_list :: [a] -> Doc

Instances

Ppr Clause
Ppr Con
Ppr Dec
Ppr Exp
Ppr Foreign
Ppr FunDep
Ppr Info
Ppr Match
Ppr Name
Ppr Pat
Ppr Range
Ppr Stmt
Ppr Type
Ppr a => Ppr [a]

pprint :: Ppr a => a -> String
pprExp :: Precedence -> Exp -> Doc
pprLit :: Precedence -> Lit -> Doc
pprPat :: Precedence -> Pat -> Doc
pprParendType :: Type -> Doc
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