Language.Perl.Types

Types for interfacing with an embedded Perl interpreter.

Basic types

data SV

(pointer to a) scalar value.

Instances

Eq SV

Methods

(==) :: SV -> SV -> Bool

(/=) :: SV -> SV -> Bool

Show SV

Methods

showsPrec :: Int -> SV -> ShowS

show :: SV -> String

showList :: [SV] -> ShowS

FromSV SV

Methods

fromSV :: SV -> IO SV

ToSV SV

Methods

toSV :: SV -> IO SV

data AV

(pointer to an) array value.

Instances

Eq AV

Methods

(==) :: AV -> AV -> Bool

(/=) :: AV -> AV -> Bool

Show AV

Methods

showsPrec :: Int -> AV -> ShowS

show :: AV -> String

showList :: [AV] -> ShowS

data CV

(pointer to a) code value.

Instances

Eq CV

Methods

(==) :: CV -> CV -> Bool

(/=) :: CV -> CV -> Bool

Show CV

Methods

showsPrec :: Int -> CV -> ShowS

show :: CV -> String

showList :: [CV] -> ShowS

data Interpreter

(pointer to a) Perl interpreter instance.

Instances

Eq Interpreter

Methods

(==) :: Interpreter -> Interpreter -> Bool

(/=) :: Interpreter -> Interpreter -> Bool

Show Interpreter

Methods

showsPrec :: Int -> Interpreter -> ShowS

show :: Interpreter -> String

showList :: [Interpreter] -> ShowS

type Callback = Ptr SV -> CInt -> IO (Ptr SV)

type of a callback from Perl into Haskell.

Calling context

data Context

Perl's calling context.

Constructors

VoidCtx

ScalarCtx

ListCtx

Instances

Enum Context

Methods

succ :: Context -> Context

pred :: Context -> Context

toEnum :: Int -> Context

fromEnum :: Context -> Int

enumFrom :: Context -> [Context]

enumFromThen :: Context -> Context -> [Context]

enumFromTo :: Context -> Context -> [Context]

enumFromThenTo :: Context -> Context -> Context -> [Context]

Eq Context

Methods

(==) :: Context -> Context -> Bool

(/=) :: Context -> Context -> Bool

Show Context

Methods

showsPrec :: Int -> Context -> ShowS

show :: Context -> String

showList :: [Context] -> ShowS

numContext :: (Eq p, Num p) => Context -> p

Convert a Context to an integral value that can be passed to the C API.

Used by the various "call_..." and "eval_..." Perl functions (which then pass it on to whatever code is being called).

Underlying C types

type IV = Int64

Underlying C integer type used by Perl. ("IV" = "Integer value".)

type NV = Double

Underlying C floating-point type used by Perl. ("NV" = "Numeric value".)