{- |
Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
License    : LGPL-2.1
Maintainer : Iñaki García Etxebarria (garetxe@gmail.com)

'GI.GLib.Structs.TimeZone.TimeZone' is an opaque structure whose members cannot be accessed
directly.

@since 2.26
-}

module GI.GLib.Structs.TimeZone
    ( 

-- * Exported types
    TimeZone(..)                            ,
    noTimeZone                              ,


 -- * Methods
-- ** adjustTime #method:adjustTime#

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
    TimeZoneAdjustTimeMethodInfo            ,
#endif
    timeZoneAdjustTime                      ,


-- ** findInterval #method:findInterval#

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
    TimeZoneFindIntervalMethodInfo          ,
#endif
    timeZoneFindInterval                    ,


-- ** getAbbreviation #method:getAbbreviation#

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
    TimeZoneGetAbbreviationMethodInfo       ,
#endif
    timeZoneGetAbbreviation                 ,


-- ** getOffset #method:getOffset#

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
    TimeZoneGetOffsetMethodInfo             ,
#endif
    timeZoneGetOffset                       ,


-- ** isDst #method:isDst#

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
    TimeZoneIsDstMethodInfo                 ,
#endif
    timeZoneIsDst                           ,


-- ** new #method:new#

    timeZoneNew                             ,


-- ** newLocal #method:newLocal#

    timeZoneNewLocal                        ,


-- ** newUtc #method:newUtc#

    timeZoneNewUtc                          ,


-- ** ref #method:ref#

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
    TimeZoneRefMethodInfo                   ,
#endif
    timeZoneRef                             ,


-- ** unref #method:unref#

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
    TimeZoneUnrefMethodInfo                 ,
#endif
    timeZoneUnref                           ,




    ) where

import Data.GI.Base.ShortPrelude
import qualified Data.GI.Base.ShortPrelude as SP
import qualified Data.GI.Base.Overloading as O
import qualified Prelude as P

import qualified Data.GI.Base.Attributes as GI.Attributes
import qualified Data.GI.Base.ManagedPtr as B.ManagedPtr
import qualified Data.GI.Base.GError as B.GError
import qualified Data.GI.Base.GVariant as B.GVariant
import qualified Data.GI.Base.GParamSpec as B.GParamSpec
import qualified Data.GI.Base.CallStack as B.CallStack
import qualified Data.Text as T
import qualified Data.ByteString.Char8 as B
import qualified Data.Map as Map
import qualified Foreign.Ptr as FP

import {-# SOURCE #-} qualified GI.GLib.Enums as GLib.Enums

-- | Memory-managed wrapper type.
newtype TimeZone = TimeZone (ManagedPtr TimeZone)
foreign import ccall "g_time_zone_get_type" c_g_time_zone_get_type :: 
    IO GType

instance BoxedObject TimeZone where
    boxedType _ = c_g_time_zone_get_type

-- | A convenience alias for `Nothing` :: `Maybe` `TimeZone`.
noTimeZone :: Maybe TimeZone
noTimeZone = Nothing


#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
instance O.HasAttributeList TimeZone
type instance O.AttributeList TimeZone = TimeZoneAttributeList
type TimeZoneAttributeList = ('[ ] :: [(Symbol, *)])
#endif

-- method TimeZone::new
-- method type : Constructor
-- Args : [Arg {argCName = "identifier", argType = TBasicType TUTF8, direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "a timezone identifier", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "GLib", name = "TimeZone"}))
-- throws : False
-- Skip return : False

foreign import ccall "g_time_zone_new" g_time_zone_new :: 
    CString ->                              -- identifier : TBasicType TUTF8
    IO (Ptr TimeZone)

{- |
Creates a 'GI.GLib.Structs.TimeZone.TimeZone' corresponding to /@identifier@/.

/@identifier@/ can either be an RFC3339\/ISO 8601 time offset or
something that would pass as a valid value for the @TZ@ environment
variable (including 'Nothing').

In Windows, /@identifier@/ can also be the unlocalized name of a time
zone for standard time, for example \"Pacific Standard Time\".

Valid RFC3339 time offsets are @\"Z\"@ (for UTC) or
@\"±hh:mm\"@.  ISO 8601 additionally specifies
@\"±hhmm\"@ and @\"±hh\"@.  Offsets are
time values to be added to Coordinated Universal Time (UTC) to get
the local time.

In UNIX, the @TZ@ environment variable typically corresponds
to the name of a file in the zoneinfo database, or string in
\"std offset [dst [offset],start[\/time],end[\/time]]\" (POSIX) format.
There  are  no spaces in the specification. The name of standard
and daylight savings time zone must be three or more alphabetic
characters. Offsets are time values to be added to local time to
get Coordinated Universal Time (UTC) and should be
@\"[±]hh[[:]mm[:ss]]\"@.  Dates are either
@\"Jn\"@ (Julian day with n between 1 and 365, leap
years not counted), @\"n\"@ (zero-based Julian day
with n between 0 and 365) or @\"Mm.w.d\"@ (day d
(0 \<= d \<= 6) of week w (1 \<= w \<= 5) of month m (1 \<= m \<= 12), day
0 is a Sunday).  Times are in local wall clock time, the default is
02:00:00.

In Windows, the \"tzn[+|–]hh[:mm[:ss]][dzn]\" format is used, but also
accepts POSIX format.  The Windows format uses US rules for all time
zones; daylight savings time is 60 minutes behind the standard time
with date and time of change taken from Pacific Standard Time.
Offsets are time values to be added to the local time to get
Coordinated Universal Time (UTC).

'GI.GLib.Structs.TimeZone.timeZoneNewLocal' calls this function with the value of the
@TZ@ environment variable. This function itself is independent of
the value of @TZ@, but if /@identifier@/ is 'Nothing' then @\/etc\/localtime@
will be consulted to discover the correct time zone on UNIX and the
registry will be consulted or @/GetTimeZoneInformation()/@ will be used
to get the local time zone on Windows.

If intervals are not available, only time zone rules from @TZ@
environment variable or other means, then they will be computed
from year 1900 to 2037.  If the maximum year for the rules is
available and it is greater than 2037, then it will followed
instead.

See
<http://tools.ietf.org/html/rfc3339#section-5.6 RFC3339 §5.6>
for a precise definition of valid RFC3339 time offsets
(the @time-offset@ expansion) and ISO 8601 for the
full list of valid time offsets.  See
<http://www.gnu.org/s/libc/manual/html_node/TZ-Variable.html The GNU C Library manual>
for an explanation of the possible
values of the @TZ@ environment variable. See
<http://msdn.microsoft.com/en-us/library/ms912391%28v=winembedded.11%29.aspx Microsoft Time Zone Index Values>
for the list of time zones on Windows.

You should release the return value by calling 'GI.GLib.Structs.TimeZone.timeZoneUnref'
when you are done with it.

@since 2.26
-}
timeZoneNew ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    Maybe (T.Text)
    {- ^ /@identifier@/: a timezone identifier -}
    -> m TimeZone
    {- ^ __Returns:__ the requested timezone -}
timeZoneNew identifier = liftIO $ do
    maybeIdentifier <- case identifier of
        Nothing -> return nullPtr
        Just jIdentifier -> do
            jIdentifier' <- textToCString jIdentifier
            return jIdentifier'
    result <- g_time_zone_new maybeIdentifier
    checkUnexpectedReturnNULL "timeZoneNew" result
    result' <- (wrapBoxed TimeZone) result
    freeMem maybeIdentifier
    return result'

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
#endif

-- method TimeZone::new_local
-- method type : Constructor
-- Args : []
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "GLib", name = "TimeZone"}))
-- throws : False
-- Skip return : False

foreign import ccall "g_time_zone_new_local" g_time_zone_new_local :: 
    IO (Ptr TimeZone)

{- |
Creates a 'GI.GLib.Structs.TimeZone.TimeZone' corresponding to local time.  The local time
zone may change between invocations to this function; for example,
if the system administrator changes it.

This is equivalent to calling 'GI.GLib.Structs.TimeZone.timeZoneNew' with the value of
the @TZ@ environment variable (including the possibility of 'Nothing').

You should release the return value by calling 'GI.GLib.Structs.TimeZone.timeZoneUnref'
when you are done with it.

@since 2.26
-}
timeZoneNewLocal ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    m TimeZone
    {- ^ __Returns:__ the local timezone -}
timeZoneNewLocal  = liftIO $ do
    result <- g_time_zone_new_local
    checkUnexpectedReturnNULL "timeZoneNewLocal" result
    result' <- (wrapBoxed TimeZone) result
    return result'

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
#endif

-- method TimeZone::new_utc
-- method type : Constructor
-- Args : []
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "GLib", name = "TimeZone"}))
-- throws : False
-- Skip return : False

foreign import ccall "g_time_zone_new_utc" g_time_zone_new_utc :: 
    IO (Ptr TimeZone)

{- |
Creates a 'GI.GLib.Structs.TimeZone.TimeZone' corresponding to UTC.

This is equivalent to calling 'GI.GLib.Structs.TimeZone.timeZoneNew' with a value like
\"Z\", \"UTC\", \"+00\", etc.

You should release the return value by calling 'GI.GLib.Structs.TimeZone.timeZoneUnref'
when you are done with it.

@since 2.26
-}
timeZoneNewUtc ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    m TimeZone
    {- ^ __Returns:__ the universal timezone -}
timeZoneNewUtc  = liftIO $ do
    result <- g_time_zone_new_utc
    checkUnexpectedReturnNULL "timeZoneNewUtc" result
    result' <- (wrapBoxed TimeZone) result
    return result'

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
#endif

-- method TimeZone::adjust_time
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tz", argType = TInterface (Name {namespace = "GLib", name = "TimeZone"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimeZone", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "type", argType = TInterface (Name {namespace = "GLib", name = "TimeType"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GTimeType of @time_", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "time_", argType = TBasicType TInt64, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a pointer to a number of seconds since January 1, 1970", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TInt)
-- throws : False
-- Skip return : False

foreign import ccall "g_time_zone_adjust_time" g_time_zone_adjust_time :: 
    Ptr TimeZone ->                         -- tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
    CUInt ->                                -- type : TInterface (Name {namespace = "GLib", name = "TimeType"})
    Int64 ->                                -- time_ : TBasicType TInt64
    IO Int32

{- |
Finds an interval within /@tz@/ that corresponds to the given /@time_@/,
possibly adjusting /@time_@/ if required to fit into an interval.
The meaning of /@time_@/ depends on /@type@/.

This function is similar to 'GI.GLib.Structs.TimeZone.timeZoneFindInterval', with the
difference that it always succeeds (by making the adjustments
described below).

In any of the cases where 'GI.GLib.Structs.TimeZone.timeZoneFindInterval' succeeds then
this function returns the same value, without modifying /@time_@/.

This function may, however, modify /@time_@/ in order to deal with
non-existent times.  If the non-existent local /@time_@/ of 02:30 were
requested on March 14th 2010 in Toronto then this function would
adjust /@time_@/ to be 03:00 and return the interval containing the
adjusted time.

@since 2.26
-}
timeZoneAdjustTime ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    TimeZone
    {- ^ /@tz@/: a 'GI.GLib.Structs.TimeZone.TimeZone' -}
    -> GLib.Enums.TimeType
    {- ^ /@type@/: the 'GI.GLib.Enums.TimeType' of /@time_@/ -}
    -> Int64
    {- ^ /@time_@/: a pointer to a number of seconds since January 1, 1970 -}
    -> m Int32
    {- ^ __Returns:__ the interval containing /@time_@/, never -1 -}
timeZoneAdjustTime tz type_ time_ = liftIO $ do
    tz' <- unsafeManagedPtrGetPtr tz
    let type_' = (fromIntegral . fromEnum) type_
    result <- g_time_zone_adjust_time tz' type_' time_
    touchManagedPtr tz
    return result

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
data TimeZoneAdjustTimeMethodInfo
instance (signature ~ (GLib.Enums.TimeType -> Int64 -> m Int32), MonadIO m) => O.MethodInfo TimeZoneAdjustTimeMethodInfo TimeZone signature where
    overloadedMethod _ = timeZoneAdjustTime

#endif

-- method TimeZone::find_interval
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tz", argType = TInterface (Name {namespace = "GLib", name = "TimeZone"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimeZone", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "type", argType = TInterface (Name {namespace = "GLib", name = "TimeType"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GTimeType of @time_", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "time_", argType = TBasicType TInt64, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a number of seconds since January 1, 1970", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TInt)
-- throws : False
-- Skip return : False

foreign import ccall "g_time_zone_find_interval" g_time_zone_find_interval :: 
    Ptr TimeZone ->                         -- tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
    CUInt ->                                -- type : TInterface (Name {namespace = "GLib", name = "TimeType"})
    Int64 ->                                -- time_ : TBasicType TInt64
    IO Int32

{- |
Finds an the interval within /@tz@/ that corresponds to the given /@time_@/.
The meaning of /@time_@/ depends on /@type@/.

If /@type@/ is 'GI.GLib.Enums.TimeTypeUniversal' then this function will always
succeed (since universal time is monotonic and continuous).

Otherwise /@time_@/ is treated as local time.  The distinction between
'GI.GLib.Enums.TimeTypeStandard' and 'GI.GLib.Enums.TimeTypeDaylight' is ignored except in
the case that the given /@time_@/ is ambiguous.  In Toronto, for example,
01:30 on November 7th 2010 occurred twice (once inside of daylight
savings time and the next, an hour later, outside of daylight savings
time).  In this case, the different value of /@type@/ would result in a
different interval being returned.

It is still possible for this function to fail.  In Toronto, for
example, 02:00 on March 14th 2010 does not exist (due to the leap
forward to begin daylight savings time).  -1 is returned in that
case.

@since 2.26
-}
timeZoneFindInterval ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    TimeZone
    {- ^ /@tz@/: a 'GI.GLib.Structs.TimeZone.TimeZone' -}
    -> GLib.Enums.TimeType
    {- ^ /@type@/: the 'GI.GLib.Enums.TimeType' of /@time_@/ -}
    -> Int64
    {- ^ /@time_@/: a number of seconds since January 1, 1970 -}
    -> m Int32
    {- ^ __Returns:__ the interval containing /@time_@/, or -1 in case of failure -}
timeZoneFindInterval tz type_ time_ = liftIO $ do
    tz' <- unsafeManagedPtrGetPtr tz
    let type_' = (fromIntegral . fromEnum) type_
    result <- g_time_zone_find_interval tz' type_' time_
    touchManagedPtr tz
    return result

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
data TimeZoneFindIntervalMethodInfo
instance (signature ~ (GLib.Enums.TimeType -> Int64 -> m Int32), MonadIO m) => O.MethodInfo TimeZoneFindIntervalMethodInfo TimeZone signature where
    overloadedMethod _ = timeZoneFindInterval

#endif

-- method TimeZone::get_abbreviation
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tz", argType = TInterface (Name {namespace = "GLib", name = "TimeZone"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimeZone", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "interval", argType = TBasicType TInt, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "an interval within the timezone", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TUTF8)
-- throws : False
-- Skip return : False

foreign import ccall "g_time_zone_get_abbreviation" g_time_zone_get_abbreviation :: 
    Ptr TimeZone ->                         -- tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
    Int32 ->                                -- interval : TBasicType TInt
    IO CString

{- |
Determines the time zone abbreviation to be used during a particular
/@interval@/ of time in the time zone /@tz@/.

For example, in Toronto this is currently \"EST\" during the winter
months and \"EDT\" during the summer months when daylight savings time
is in effect.

@since 2.26
-}
timeZoneGetAbbreviation ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    TimeZone
    {- ^ /@tz@/: a 'GI.GLib.Structs.TimeZone.TimeZone' -}
    -> Int32
    {- ^ /@interval@/: an interval within the timezone -}
    -> m T.Text
    {- ^ __Returns:__ the time zone abbreviation, which belongs to /@tz@/ -}
timeZoneGetAbbreviation tz interval = liftIO $ do
    tz' <- unsafeManagedPtrGetPtr tz
    result <- g_time_zone_get_abbreviation tz' interval
    checkUnexpectedReturnNULL "timeZoneGetAbbreviation" result
    result' <- cstringToText result
    touchManagedPtr tz
    return result'

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
data TimeZoneGetAbbreviationMethodInfo
instance (signature ~ (Int32 -> m T.Text), MonadIO m) => O.MethodInfo TimeZoneGetAbbreviationMethodInfo TimeZone signature where
    overloadedMethod _ = timeZoneGetAbbreviation

#endif

-- method TimeZone::get_offset
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tz", argType = TInterface (Name {namespace = "GLib", name = "TimeZone"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimeZone", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "interval", argType = TBasicType TInt, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "an interval within the timezone", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TInt32)
-- throws : False
-- Skip return : False

foreign import ccall "g_time_zone_get_offset" g_time_zone_get_offset :: 
    Ptr TimeZone ->                         -- tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
    Int32 ->                                -- interval : TBasicType TInt
    IO Int32

{- |
Determines the offset to UTC in effect during a particular /@interval@/
of time in the time zone /@tz@/.

The offset is the number of seconds that you add to UTC time to
arrive at local time for /@tz@/ (ie: negative numbers for time zones
west of GMT, positive numbers for east).

@since 2.26
-}
timeZoneGetOffset ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    TimeZone
    {- ^ /@tz@/: a 'GI.GLib.Structs.TimeZone.TimeZone' -}
    -> Int32
    {- ^ /@interval@/: an interval within the timezone -}
    -> m Int32
    {- ^ __Returns:__ the number of seconds that should be added to UTC to get the
         local time in /@tz@/ -}
timeZoneGetOffset tz interval = liftIO $ do
    tz' <- unsafeManagedPtrGetPtr tz
    result <- g_time_zone_get_offset tz' interval
    touchManagedPtr tz
    return result

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
data TimeZoneGetOffsetMethodInfo
instance (signature ~ (Int32 -> m Int32), MonadIO m) => O.MethodInfo TimeZoneGetOffsetMethodInfo TimeZone signature where
    overloadedMethod _ = timeZoneGetOffset

#endif

-- method TimeZone::is_dst
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tz", argType = TInterface (Name {namespace = "GLib", name = "TimeZone"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimeZone", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "interval", argType = TBasicType TInt, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "an interval within the timezone", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TBoolean)
-- throws : False
-- Skip return : False

foreign import ccall "g_time_zone_is_dst" g_time_zone_is_dst :: 
    Ptr TimeZone ->                         -- tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
    Int32 ->                                -- interval : TBasicType TInt
    IO CInt

{- |
Determines if daylight savings time is in effect during a particular
/@interval@/ of time in the time zone /@tz@/.

@since 2.26
-}
timeZoneIsDst ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    TimeZone
    {- ^ /@tz@/: a 'GI.GLib.Structs.TimeZone.TimeZone' -}
    -> Int32
    {- ^ /@interval@/: an interval within the timezone -}
    -> m Bool
    {- ^ __Returns:__ 'True' if daylight savings time is in effect -}
timeZoneIsDst tz interval = liftIO $ do
    tz' <- unsafeManagedPtrGetPtr tz
    result <- g_time_zone_is_dst tz' interval
    let result' = (/= 0) result
    touchManagedPtr tz
    return result'

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
data TimeZoneIsDstMethodInfo
instance (signature ~ (Int32 -> m Bool), MonadIO m) => O.MethodInfo TimeZoneIsDstMethodInfo TimeZone signature where
    overloadedMethod _ = timeZoneIsDst

#endif

-- method TimeZone::ref
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tz", argType = TInterface (Name {namespace = "GLib", name = "TimeZone"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimeZone", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "GLib", name = "TimeZone"}))
-- throws : False
-- Skip return : False

foreign import ccall "g_time_zone_ref" g_time_zone_ref :: 
    Ptr TimeZone ->                         -- tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
    IO (Ptr TimeZone)

{- |
Increases the reference count on /@tz@/.

@since 2.26
-}
timeZoneRef ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    TimeZone
    {- ^ /@tz@/: a 'GI.GLib.Structs.TimeZone.TimeZone' -}
    -> m TimeZone
    {- ^ __Returns:__ a new reference to /@tz@/. -}
timeZoneRef tz = liftIO $ do
    tz' <- unsafeManagedPtrGetPtr tz
    result <- g_time_zone_ref tz'
    checkUnexpectedReturnNULL "timeZoneRef" result
    result' <- (wrapBoxed TimeZone) result
    touchManagedPtr tz
    return result'

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
data TimeZoneRefMethodInfo
instance (signature ~ (m TimeZone), MonadIO m) => O.MethodInfo TimeZoneRefMethodInfo TimeZone signature where
    overloadedMethod _ = timeZoneRef

#endif

-- method TimeZone::unref
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tz", argType = TInterface (Name {namespace = "GLib", name = "TimeZone"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimeZone", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "g_time_zone_unref" g_time_zone_unref :: 
    Ptr TimeZone ->                         -- tz : TInterface (Name {namespace = "GLib", name = "TimeZone"})
    IO ()

{- |
Decreases the reference count on /@tz@/.

@since 2.26
-}
timeZoneUnref ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    TimeZone
    {- ^ /@tz@/: a 'GI.GLib.Structs.TimeZone.TimeZone' -}
    -> m ()
timeZoneUnref tz = liftIO $ do
    tz' <- unsafeManagedPtrGetPtr tz
    g_time_zone_unref tz'
    touchManagedPtr tz
    return ()

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
data TimeZoneUnrefMethodInfo
instance (signature ~ (m ()), MonadIO m) => O.MethodInfo TimeZoneUnrefMethodInfo TimeZone signature where
    overloadedMethod _ = timeZoneUnref

#endif

#if defined(ENABLE_OVERLOADING) && !defined(__HADDOCK_VERSION__)
type family ResolveTimeZoneMethod (t :: Symbol) (o :: *) :: * where
    ResolveTimeZoneMethod "adjustTime" o = TimeZoneAdjustTimeMethodInfo
    ResolveTimeZoneMethod "findInterval" o = TimeZoneFindIntervalMethodInfo
    ResolveTimeZoneMethod "isDst" o = TimeZoneIsDstMethodInfo
    ResolveTimeZoneMethod "ref" o = TimeZoneRefMethodInfo
    ResolveTimeZoneMethod "unref" o = TimeZoneUnrefMethodInfo
    ResolveTimeZoneMethod "getAbbreviation" o = TimeZoneGetAbbreviationMethodInfo
    ResolveTimeZoneMethod "getOffset" o = TimeZoneGetOffsetMethodInfo
    ResolveTimeZoneMethod l o = O.MethodResolutionFailed l o

instance (info ~ ResolveTimeZoneMethod t TimeZone, O.MethodInfo info TimeZone p) => O.IsLabelProxy t (TimeZone -> p) where
    fromLabelProxy _ = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)

#if MIN_VERSION_base(4,9,0)
instance (info ~ ResolveTimeZoneMethod t TimeZone, O.MethodInfo info TimeZone p) => O.IsLabel t (TimeZone -> p) where
#if MIN_VERSION_base(4,10,0)
    fromLabel = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)
#else
    fromLabel _ = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)
#endif
#endif

#endif