Lua.Types

The core Lua types, including mappings of Lua types to Haskell.

Documentation

newtype State

An opaque structure that points to a thread and indirectly (through the thread) to the whole state of a Lua interpreter. The Lua library is fully reentrant: it has no global variables. All information about a state is accessible through this structure.

Synonym for lua_State *. See lua_State.

Constructors

State (Ptr ())

Instances

Eq State

Defined in Lua.Types

Methods

(==) :: State -> State -> Bool

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

Generic State

Defined in Lua.Types

Associated Types

type Rep State :: Type -> Type

Methods

from :: State -> Rep State x

to :: Rep State x -> State

type Rep State

Defined in Lua.Types

type Rep State = D1 ('MetaData "State" "Lua.Types" "lua-2.2.1-KlU5RPNhml0CgrTmPpae4U" 'True) (C1 ('MetaCons "State" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (Ptr ()))))

type Reader = FunPtr (State -> Ptr () -> Ptr CSize -> IO (Ptr CChar))

The reader function used by load. Every time it needs another piece of the chunk, lua_load calls the reader, passing along its data parameter. The reader must return a pointer to a block of memory with a new piece of the chunk and set size to the block size. The block must exist until the reader function is called again. To signal the end of the chunk, the reader must return NULL or set size to zero. The reader function may return pieces of any size greater than zero.

See lua_Reader.

newtype TypeCode

Integer code used to encode the type of a Lua value.

Constructors

TypeCode

Fields

• fromTypeCode :: CInt

Instances

Eq TypeCode

Defined in Lua.Types

Methods

(==) :: TypeCode -> TypeCode -> Bool

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

Ord TypeCode

Defined in Lua.Types

Methods

compare :: TypeCode -> TypeCode -> Ordering

(<) :: TypeCode -> TypeCode -> Bool

(<=) :: TypeCode -> TypeCode -> Bool

(>) :: TypeCode -> TypeCode -> Bool

(>=) :: TypeCode -> TypeCode -> Bool

max :: TypeCode -> TypeCode -> TypeCode

min :: TypeCode -> TypeCode -> TypeCode

Show TypeCode

Defined in Lua.Types

Methods

showsPrec :: Int -> TypeCode -> ShowS

show :: TypeCode -> String

showList :: [TypeCode] -> ShowS

type CFunction = FunPtr PreCFunction

Type for C functions.

In order to communicate properly with Lua, a C function must use the following protocol, which defines the way parameters and results are passed: a C function receives its arguments from Lua in its stack in direct order (the first argument is pushed first). So, when the function starts, lua_gettop returns the number of arguments received by the function. The first argument (if any) is at index 1 and its last argument is at index lua_gettop. To return values to Lua, a C function just pushes them onto the stack, in direct order (the first result is pushed first), and returns the number of results. Any other value in the stack below the results will be properly discarded by Lua. Like a Lua function, a C function called by Lua can also return many results.

See lua_CFunction.

type PreCFunction = State -> IO NumResults

Type of Haskell functions that can be turned into C functions.

This is the same as a dereferenced CFunction.

type WarnFunction = FunPtr (Ptr () -> CString -> LuaBool -> IO ())

The type of warning functions, called by Lua to emit warnings. The first parameter is an opaque pointer set by lua_setwarnf. The second parameter is the warning message. The third parameter is a boolean that indicates whether the message is to be continued by the message in the next call.

See warn for more details about warnings.

newtype LuaBool

Boolean value returned by a Lua C API function. This is a CInt and should be interpreted as False iff the value is 0, True otherwise.

Constructors

LuaBool CInt

Instances

Eq LuaBool

Defined in Lua.Types

Methods

(==) :: LuaBool -> LuaBool -> Bool

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

Show LuaBool

Defined in Lua.Types

Methods

showsPrec :: Int -> LuaBool -> ShowS

show :: LuaBool -> String

showList :: [LuaBool] -> ShowS

Storable LuaBool

Defined in Lua.Types

Methods

sizeOf :: LuaBool -> Int

alignment :: LuaBool -> Int

peekElemOff :: Ptr LuaBool -> Int -> IO LuaBool

pokeElemOff :: Ptr LuaBool -> Int -> LuaBool -> IO ()

peekByteOff :: Ptr b -> Int -> IO LuaBool

pokeByteOff :: Ptr b -> Int -> LuaBool -> IO ()

peek :: Ptr LuaBool -> IO LuaBool

poke :: Ptr LuaBool -> LuaBool -> IO ()

newtype Integer

The type of integers in Lua.

By default this type is Int64, but that can be changed to different values in Lua. (See LUA_INT_TYPE in luaconf.h.)

See lua_Integer.

Constructors

Integer Int64

Instances

Bounded Integer

Defined in Lua.Types

Methods

minBound :: Integer

maxBound :: Integer

Enum Integer

Defined in Lua.Types

Methods

succ :: Integer -> Integer

pred :: Integer -> Integer

toEnum :: Int -> Integer

fromEnum :: Integer -> Int

enumFrom :: Integer -> [Integer]

enumFromThen :: Integer -> Integer -> [Integer]

enumFromTo :: Integer -> Integer -> [Integer]

enumFromThenTo :: Integer -> Integer -> Integer -> [Integer]

Eq Integer

Defined in Lua.Types

Methods

(==) :: Integer -> Integer -> Bool

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

Integral Integer

Defined in Lua.Types

Methods

quot :: Integer -> Integer -> Integer

rem :: Integer -> Integer -> Integer

div :: Integer -> Integer -> Integer

mod :: Integer -> Integer -> Integer

quotRem :: Integer -> Integer -> (Integer, Integer)

divMod :: Integer -> Integer -> (Integer, Integer)

toInteger :: Integer -> Integer0

Num Integer

Defined in Lua.Types

Methods

(+) :: Integer -> Integer -> Integer

(-) :: Integer -> Integer -> Integer

(*) :: Integer -> Integer -> Integer

negate :: Integer -> Integer

abs :: Integer -> Integer

signum :: Integer -> Integer

fromInteger :: Integer0 -> Integer

Ord Integer

Defined in Lua.Types

Methods

compare :: Integer -> Integer -> Ordering

(<) :: Integer -> Integer -> Bool

(<=) :: Integer -> Integer -> Bool

(>) :: Integer -> Integer -> Bool

(>=) :: Integer -> Integer -> Bool

max :: Integer -> Integer -> Integer

min :: Integer -> Integer -> Integer

Read Integer

Defined in Lua.Types

Methods

readsPrec :: Int -> ReadS Integer

readList :: ReadS [Integer]

readPrec :: ReadPrec Integer

readListPrec :: ReadPrec [Integer]

Real Integer

Defined in Lua.Types

Methods

toRational :: Integer -> Rational

Show Integer

Defined in Lua.Types

Methods

showsPrec :: Int -> Integer -> ShowS

show :: Integer -> String

showList :: [Integer] -> ShowS

newtype Number

The type of floats in Lua.

By default this type is Double, but that can be changed in Lua to a single float or a long double. (See LUA_FLOAT_TYPE in luaconf.h.)

See lua_Number.

Constructors

Number Double

Instances

Eq Number

Defined in Lua.Types

Methods

(==) :: Number -> Number -> Bool

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

Floating Number

Defined in Lua.Types

Methods

pi :: Number

exp :: Number -> Number

log :: Number -> Number

sqrt :: Number -> Number

(**) :: Number -> Number -> Number

logBase :: Number -> Number -> Number

sin :: Number -> Number

cos :: Number -> Number

tan :: Number -> Number

asin :: Number -> Number

acos :: Number -> Number

atan :: Number -> Number

sinh :: Number -> Number

cosh :: Number -> Number

tanh :: Number -> Number

asinh :: Number -> Number

acosh :: Number -> Number

atanh :: Number -> Number

log1p :: Number -> Number

expm1 :: Number -> Number

log1pexp :: Number -> Number

log1mexp :: Number -> Number

Fractional Number

Defined in Lua.Types

Methods

(/) :: Number -> Number -> Number

recip :: Number -> Number

fromRational :: Rational -> Number

Num Number

Defined in Lua.Types

Methods

(+) :: Number -> Number -> Number

(-) :: Number -> Number -> Number

(*) :: Number -> Number -> Number

negate :: Number -> Number

abs :: Number -> Number

signum :: Number -> Number

fromInteger :: Integer -> Number

Ord Number

Defined in Lua.Types

Methods

compare :: Number -> Number -> Ordering

(<) :: Number -> Number -> Bool

(<=) :: Number -> Number -> Bool

(>) :: Number -> Number -> Bool

(>=) :: Number -> Number -> Bool

max :: Number -> Number -> Number

min :: Number -> Number -> Number

Read Number

Defined in Lua.Types

Methods

readsPrec :: Int -> ReadS Number

readList :: ReadS [Number]

readPrec :: ReadPrec Number

readListPrec :: ReadPrec [Number]

Real Number

Defined in Lua.Types

Methods

toRational :: Number -> Rational

RealFloat Number

Defined in Lua.Types

Methods

floatRadix :: Number -> Integer

floatDigits :: Number -> Int

floatRange :: Number -> (Int, Int)

decodeFloat :: Number -> (Integer, Int)

encodeFloat :: Integer -> Int -> Number

exponent :: Number -> Int

significand :: Number -> Number

scaleFloat :: Int -> Number -> Number

isNaN :: Number -> Bool

isInfinite :: Number -> Bool

isDenormalized :: Number -> Bool

isNegativeZero :: Number -> Bool

isIEEE :: Number -> Bool

atan2 :: Number -> Number -> Number

RealFrac Number

Defined in Lua.Types

Methods

properFraction :: Integral b => Number -> (b, Number)

truncate :: Integral b => Number -> b

round :: Integral b => Number -> b

ceiling :: Integral b => Number -> b

floor :: Integral b => Number -> b

Show Number

Defined in Lua.Types

Methods

showsPrec :: Int -> Number -> ShowS

show :: Number -> String

showList :: [Number] -> ShowS

newtype StackIndex

A stack index

Constructors

StackIndex

Fields

• fromStackIndex :: CInt

Instances

Enum StackIndex

Defined in Lua.Types

Methods

succ :: StackIndex -> StackIndex

pred :: StackIndex -> StackIndex

toEnum :: Int -> StackIndex

fromEnum :: StackIndex -> Int

enumFrom :: StackIndex -> [StackIndex]

enumFromThen :: StackIndex -> StackIndex -> [StackIndex]

enumFromTo :: StackIndex -> StackIndex -> [StackIndex]

enumFromThenTo :: StackIndex -> StackIndex -> StackIndex -> [StackIndex]

Eq StackIndex

Defined in Lua.Types

Methods

(==) :: StackIndex -> StackIndex -> Bool

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

Num StackIndex

Defined in Lua.Types

Methods

(+) :: StackIndex -> StackIndex -> StackIndex

(-) :: StackIndex -> StackIndex -> StackIndex

(*) :: StackIndex -> StackIndex -> StackIndex

negate :: StackIndex -> StackIndex

abs :: StackIndex -> StackIndex

signum :: StackIndex -> StackIndex

fromInteger :: Integer -> StackIndex

Ord StackIndex

Defined in Lua.Types

Methods

compare :: StackIndex -> StackIndex -> Ordering

(<) :: StackIndex -> StackIndex -> Bool

(<=) :: StackIndex -> StackIndex -> Bool

(>) :: StackIndex -> StackIndex -> Bool

(>=) :: StackIndex -> StackIndex -> Bool

max :: StackIndex -> StackIndex -> StackIndex

min :: StackIndex -> StackIndex -> StackIndex

Show StackIndex

Defined in Lua.Types

Methods

showsPrec :: Int -> StackIndex -> ShowS

show :: StackIndex -> String

showList :: [StackIndex] -> ShowS

newtype NumArgs

The number of arguments consumed curing a function call.

Constructors

NumArgs

Fields

• fromNumArgs :: CInt

Instances

Eq NumArgs

Defined in Lua.Types

Methods

(==) :: NumArgs -> NumArgs -> Bool

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

Num NumArgs

Defined in Lua.Types

Methods

(+) :: NumArgs -> NumArgs -> NumArgs

(-) :: NumArgs -> NumArgs -> NumArgs

(*) :: NumArgs -> NumArgs -> NumArgs

negate :: NumArgs -> NumArgs

abs :: NumArgs -> NumArgs

signum :: NumArgs -> NumArgs

fromInteger :: Integer -> NumArgs

Ord NumArgs

Defined in Lua.Types

Methods

compare :: NumArgs -> NumArgs -> Ordering

(<) :: NumArgs -> NumArgs -> Bool

(<=) :: NumArgs -> NumArgs -> Bool

(>) :: NumArgs -> NumArgs -> Bool

(>=) :: NumArgs -> NumArgs -> Bool

max :: NumArgs -> NumArgs -> NumArgs

min :: NumArgs -> NumArgs -> NumArgs

Show NumArgs

Defined in Lua.Types

Methods

showsPrec :: Int -> NumArgs -> ShowS

show :: NumArgs -> String

showList :: [NumArgs] -> ShowS

newtype NumResults

The number of results returned by a function call.

Constructors

NumResults

Fields

• fromNumResults :: CInt

Instances

Eq NumResults

Defined in Lua.Types

Methods

(==) :: NumResults -> NumResults -> Bool

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

Num NumResults

Defined in Lua.Types

Methods

(+) :: NumResults -> NumResults -> NumResults

(-) :: NumResults -> NumResults -> NumResults

(*) :: NumResults -> NumResults -> NumResults

negate :: NumResults -> NumResults

abs :: NumResults -> NumResults

signum :: NumResults -> NumResults

fromInteger :: Integer -> NumResults

Ord NumResults

Defined in Lua.Types

Methods

compare :: NumResults -> NumResults -> Ordering

(<) :: NumResults -> NumResults -> Bool

(<=) :: NumResults -> NumResults -> Bool

(>) :: NumResults -> NumResults -> Bool

(>=) :: NumResults -> NumResults -> Bool

max :: NumResults -> NumResults -> NumResults

min :: NumResults -> NumResults -> NumResults

Show NumResults

Defined in Lua.Types

Methods

showsPrec :: Int -> NumResults -> ShowS

show :: NumResults -> String

showList :: [NumResults] -> ShowS

newtype OPCode

Relational operator code.

Constructors

OPCode CInt

Instances

Eq OPCode

Defined in Lua.Types

Methods

(==) :: OPCode -> OPCode -> Bool

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

Show OPCode

Defined in Lua.Types

Methods

showsPrec :: Int -> OPCode -> ShowS

show :: OPCode -> String

showList :: [OPCode] -> ShowS

Storable OPCode

Defined in Lua.Types

Methods

sizeOf :: OPCode -> Int

alignment :: OPCode -> Int

peekElemOff :: Ptr OPCode -> Int -> IO OPCode

pokeElemOff :: Ptr OPCode -> Int -> OPCode -> IO ()

peekByteOff :: Ptr b -> Int -> IO OPCode

pokeByteOff :: Ptr b -> Int -> OPCode -> IO ()

peek :: Ptr OPCode -> IO OPCode

poke :: Ptr OPCode -> OPCode -> IO ()

newtype ArithOPCode

Arithmetic operator code.

Constructors

ArithOPCode CInt

Instances

Eq ArithOPCode

Defined in Lua.Types

Methods

(==) :: ArithOPCode -> ArithOPCode -> Bool

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

Show ArithOPCode

Defined in Lua.Types

Methods

showsPrec :: Int -> ArithOPCode -> ShowS

show :: ArithOPCode -> String

showList :: [ArithOPCode] -> ShowS

Storable ArithOPCode

Defined in Lua.Types

Methods

sizeOf :: ArithOPCode -> Int

alignment :: ArithOPCode -> Int

peekElemOff :: Ptr ArithOPCode -> Int -> IO ArithOPCode

pokeElemOff :: Ptr ArithOPCode -> Int -> ArithOPCode -> IO ()

peekByteOff :: Ptr b -> Int -> IO ArithOPCode

pokeByteOff :: Ptr b -> Int -> ArithOPCode -> IO ()

peek :: Ptr ArithOPCode -> IO ArithOPCode

poke :: Ptr ArithOPCode -> ArithOPCode -> IO ()

newtype StatusCode

Integer code used to signal the status of a thread or computation.

Constructors

StatusCode CInt

Instances

Eq StatusCode

Defined in Lua.Types

Methods

(==) :: StatusCode -> StatusCode -> Bool

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

Show StatusCode

Defined in Lua.Types

Methods

showsPrec :: Int -> StatusCode -> ShowS

show :: StatusCode -> String

showList :: [StatusCode] -> ShowS

Storable StatusCode

Defined in Lua.Types

Methods

sizeOf :: StatusCode -> Int

alignment :: StatusCode -> Int

peekElemOff :: Ptr StatusCode -> Int -> IO StatusCode

pokeElemOff :: Ptr StatusCode -> Int -> StatusCode -> IO ()

peekByteOff :: Ptr b -> Int -> IO StatusCode

pokeByteOff :: Ptr b -> Int -> StatusCode -> IO ()

peek :: Ptr StatusCode -> IO StatusCode

poke :: Ptr StatusCode -> StatusCode -> IO ()

Garbage-Collection

newtype GCCode

Garbage-collection options.

Constructors

GCCode CInt

Instances

Eq GCCode

Defined in Lua.Types

Methods

(==) :: GCCode -> GCCode -> Bool

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

Show GCCode

Defined in Lua.Types

Methods

showsPrec :: Int -> GCCode -> ShowS

show :: GCCode -> String

showList :: [GCCode] -> ShowS

Storable GCCode

Defined in Lua.Types

Methods

sizeOf :: GCCode -> Int

alignment :: GCCode -> Int

peekElemOff :: Ptr GCCode -> Int -> IO GCCode

pokeElemOff :: Ptr GCCode -> Int -> GCCode -> IO ()

peekByteOff :: Ptr b -> Int -> IO GCCode

pokeByteOff :: Ptr b -> Int -> GCCode -> IO ()

peek :: Ptr GCCode -> IO GCCode

poke :: Ptr GCCode -> GCCode -> IO ()