lambdabot-core-5.2: Lambdabot core functionality

Safe HaskellNone
LanguageHaskell98

Lambdabot.Main

Synopsis

Documentation

data Config t Source #

Instances
GCompare Config Source # 
Instance details

Defined in Lambdabot.Config

Methods

gcompare :: Config a -> Config b -> GOrdering a b #

GEq Config Source # 
Instance details

Defined in Lambdabot.Config

Methods

geq :: Config a -> Config b -> Maybe (a := b) #

data DSum (tag :: k -> Type) (f :: k -> Type) :: forall k. (k -> Type) -> (k -> Type) -> Type where #

A basic dependent sum type; the first component is a tag that specifies the type of the second; for example, think of a GADT such as:

data Tag a where
   AString :: Tag String
   AnInt   :: Tag Int

Then, we have the following valid expressions of type Applicative f => DSum Tag f:

AString ==> "hello!"
AnInt   ==> 42

And we can write functions that consume DSum Tag f values by matching, such as:

toString :: DSum Tag Identity -> String
toString (AString :=> Identity str) = str
toString (AnInt   :=> Identity int) = show int

By analogy to the (key => value) construction for dictionary entries in many dynamic languages, we use (key :=> value) as the constructor for dependent sums. The :=> and ==> operators have very low precedence and bind to the right, so if the Tag GADT is extended with an additional constructor Rec :: Tag (DSum Tag Identity), then Rec ==> AnInt ==> 3 + 4 is parsed as would be expected (Rec ==> (AnInt ==> (3 + 4))) and has type DSum Identity Tag. Its precedence is just above that of $, so foo bar $ AString ==> "eep" is equivalent to foo bar (AString ==> "eep").

Constructors

(:=>) :: forall k (tag :: k -> Type) (f :: k -> Type) (a :: k). !(tag a) -> f a -> DSum tag f infixr 1 
Instances
EqTag tag f => Eq (DSum tag f) 
Instance details

Defined in Data.Dependent.Sum

Methods

(==) :: DSum tag f -> DSum tag f -> Bool #

(/=) :: DSum tag f -> DSum tag f -> Bool #

OrdTag tag f => Ord (DSum tag f) 
Instance details

Defined in Data.Dependent.Sum

Methods

compare :: DSum tag f -> DSum tag f -> Ordering #

(<) :: DSum tag f -> DSum tag f -> Bool #

(<=) :: DSum tag f -> DSum tag f -> Bool #

(>) :: DSum tag f -> DSum tag f -> Bool #

(>=) :: DSum tag f -> DSum tag f -> Bool #

max :: DSum tag f -> DSum tag f -> DSum tag f #

min :: DSum tag f -> DSum tag f -> DSum tag f #

ReadTag tag f => Read (DSum tag f) 
Instance details

Defined in Data.Dependent.Sum

Methods

readsPrec :: Int -> ReadS (DSum tag f) #

readList :: ReadS [DSum tag f] #

readPrec :: ReadPrec (DSum tag f) #

readListPrec :: ReadPrec [DSum tag f] #

ShowTag tag f => Show (DSum tag f) 
Instance details

Defined in Data.Dependent.Sum

Methods

showsPrec :: Int -> DSum tag f -> ShowS #

show :: DSum tag f -> String #

showList :: [DSum tag f] -> ShowS #

(==>) :: Applicative f => tag a -> a -> DSum tag f infixr 1 #

lambdabotMain :: Modules -> [DSum Config Identity] -> IO ExitCode Source #

The Lambdabot entry point. Initialise plugins, connect, and run the bot in the LB monad

Also, handle any fatal exceptions (such as non-recoverable signals), (i.e. print a message and exit). Non-fatal exceptions should be dealt with in the mainLoop or further down.

data Priority #

Priorities are used to define how important a log message is. Users can filter log messages based on priorities.

These have their roots on the traditional syslog system. The standard definitions are given below, but you are free to interpret them however you like. They are listed here in ascending importance order.

Constructors

DEBUG

Debug messages

INFO

Information

NOTICE

Normal runtime conditions

WARNING

General Warnings

ERROR

General Errors

CRITICAL

Severe situations

ALERT

Take immediate action

EMERGENCY

System is unusable

Instances
Bounded Priority 
Instance details

Defined in System.Log

Enum Priority 
Instance details

Defined in System.Log

Eq Priority 
Instance details

Defined in System.Log

Ord Priority 
Instance details

Defined in System.Log

Read Priority 
Instance details

Defined in System.Log

Show Priority 
Instance details

Defined in System.Log