Knit.Report

This module re-exports the basic pieces to build reports using Pandoc as well as providing functions to do the "knitting"--produce the documents. That is, it is intended as one-stop-shopping for using this library to produce Html from various fragments which Pandoc can read.

Examples are available, and might be useful for seeing how all this works.

Notes:

1. The Knit.Effect.RandomFu effect is not imported since the names might clash with Polysemy.Random. Import either effect directly if you need it.
2. You can add logging from within document creation using logLE.
3. The Knit.Report.Input.MarkDown.PandocMarkDown module is exported so if you want to use a different markdown flavor you may need to hide "addMarkDown" when you import this module.
4. If you use any other effects in your polysemy stack (e.g., Random or RandomFu), you will need to interpretrun them before calling knitHtmlknitHtmls.

Knit

knitHtml

Arguments

:: MonadIO m

=> Maybe Text

outer logging prefix

-> [LogSeverity]

what to output in log

-> PandocWriterConfig

configuration for the Pandoc Html Writer

-> Sem (KnitEffectDocStack m) ()

-> m (Either PandocError Text)

Create HTML Text from pandoc fragments In use, you may need a type-application to specify m. This allows use of any underlying monad to handle the Pandoc effects. NB: Resulting document is *Lazy* Text, as produced by the Blaze render function.

knitHtmls

Arguments

:: MonadIO m

=> Maybe Text

outer logging prefix

-> [LogSeverity]

what to output in log

-> PandocWriterConfig

configuration for the Pandoc Html Writer

-> Sem (KnitEffectDocsStack m) ()

-> m (Either PandocError [NamedDoc Text])

Create multiple HTML docs (as Text) from the named sets of pandoc fragments. In use, you may need a type-application to specify m. This allows use of any underlying monad to handle the Pandoc effects. NB: Resulting documents are *Lazy* Text, as produced by the Blaze render function.

liftKnit :: Member (Lift m) r => m a -> Sem r a

lift an action in a base monad into a Polysemy monad. This is just a renaming for convenience.

type KnitBase m effs = (MonadIO m, Member (Lift m) effs)

Constraints required to knit a document using effects from a base monad m.

Inputs

addColonnadeTextTable

Arguments

:: (PandocEffects effs, Member ToPandoc effs, Foldable f)

=> Colonnade Headed a Text

How to encode data as columns

-> f a

collection of data

-> Sem effs ()

Add a table given a Colonnade representation producing text

addColonnadeHtmlTable

Arguments

:: (PandocEffects effs, Member ToPandoc effs, Foldable f)

=> Attribute

Attributes of table Html element, currently unused by knit-haskell

-> Colonnade Headed a Html

How to encode data as columns

-> f a

collection of data

-> Sem effs ()

Add a Blaze-Colonnade Html Table

addColonnadeCellTable

Arguments

:: (PandocEffects effs, Member ToPandoc effs, Foldable f)

=> Attribute

Attributes of table Html element, currently unused by knit-haskell

-> Colonnade Headed a Cell

How to encode data as columns

-> f a

collection of data

-> Sem effs ()

Add a Blaze-Colonnade Cell Table

addMarkDown :: (PandocEffects effs, Member ToPandoc effs) => Text -> Sem effs ()

Add a Pandoc MarkDown fragment with default options

addStrictTextHtml :: (PandocEffects effs, Member ToPandoc effs) => Text -> Sem effs ()

Add Strict Text Html to current Pandoc

addLazyTextHtml :: (PandocEffects effs, Member ToPandoc effs) => Text -> Sem effs ()

Add Lazy Text Html to current Pandoc

addBlaze :: (PandocEffects effs, Member ToPandoc effs) => Html -> Sem effs ()

Add Blaze Html

addLucid :: (PandocEffects effs, Member ToPandoc effs) => Html () -> Sem effs ()

Add Lucid Html

addLatex :: (PandocEffects effs, Member ToPandoc effs) => Text -> Sem effs ()

Add LaTeX

addHvega :: (PandocEffects effs, Member ToPandoc effs) => Text -> VegaLite -> Sem effs ()

Add hvega (via html). Requires html since vega-lite renders using javascript.

Output

data PandocWriterConfig

Constructors

PandocWriterConfig

Fields

• templateFP :: Maybe FilePath

  optional path to pandoc template

• templateVars :: Map String String

  variable substitutions for the template

• optionsF :: WriterOptions -> WriterOptions

  change default options

pandocWriterToBlazeDocument

Arguments

:: PandocEffects effs

=> PandocWriterConfig

Configuration info for the Pandoc writer

-> Sem (ToPandoc ': effs) ()

Effects stack to run to get Pandoc

-> Sem effs Html

Blaze Html (in remaining effects)

Convert current Pandoc document (from the ToPandoc effect) into a Blaze Html document. Incudes support for template and template variables and changes to the default writer options.

mindocOptionsF :: WriterOptions -> WriterOptions

options for the mindoc template

Effects

data Sem (r :: [(Type -> Type) -> Type -> Type]) a

The Sem monad handles computations of arbitrary extensible effects. A value of type Sem r describes a program with the capabilities of r. For best results, r should always be kept polymorphic, but you can add capabilities via the Member constraint.

The value of the Sem monad is that it allows you to write programs against a set of effects without a predefined meaning, and provide that meaning later. For example, unlike with mtl, you can decide to interpret an Error effect tradtionally as an Either, or instead significantly faster as an IO Exception. These interpretations (and others that you might add) may be used interchangably without needing to write any newtypes or Monad instances. The only change needed to swap interpretations is to change a call from runError to runErrorInIO.

The effect stack r can contain arbitrary other monads inside of it. These monads are lifted into effects via the Lift effect. Monadic values can be lifted into a Sem via sendM.

A Sem can be interpreted as a pure value (via run) or as any traditional Monad (via runM). Each effect E comes equipped with some interpreters of the form:

runE :: Sem (E ': r) a -> Sem r a

which is responsible for removing the effect E from the effect stack. It is the order in which you call the interpreters that determines the monomorphic representation of the r parameter.

After all of your effects are handled, you'll be left with either a Sem '[] a or a Sem '[ Lift m ] a value, which can be consumed respectively by run and runM.

Examples

As an example of keeping r polymorphic, we can consider the type

Member (State String) r => Sem r ()

to be a program with access to

get :: Sem r String
put :: String -> Sem r ()

methods.

By also adding a

Member (Error Bool) r

constraint on r, we gain access to the

throw :: Bool -> Sem r a
catch :: Sem r a -> (Bool -> Sem r a) -> Sem r a

functions as well.

In this sense, a Member (State s) r constraint is analogous to mtl's MonadState s m and should be thought of as such. However, unlike mtl, a Sem monad may have an arbitrary number of the same effect.

For example, we can write a Sem program which can output either Ints or Bools:

foo :: ( Member (Output Int) r
       , Member (Output Bool) r
       )
    => Sem r ()
foo = do
  output @Int  5
  output True

Notice that we must use -XTypeApplications to specify that we'd like to use the (Output Int) effect.

Since: polysemy-0.1.2.0

Instances

Member (Error PandocError :: (Type -> Type) -> Type -> Type) effs => MonadError PandocError (Sem effs)

Split off the error piece. We will handle directly with the polysemy Error effect

Defined in Knit.Effect.PandocMonad

Methods

throwError :: PandocError -> Sem effs a

catchError :: Sem effs a -> (PandocError -> Sem effs a) -> Sem effs a

Monad (Sem f)

Defined in Polysemy.Internal

Methods

(>>=) :: Sem f a -> (a -> Sem f b) -> Sem f b

(>>) :: Sem f a -> Sem f b -> Sem f b

return :: a -> Sem f a

fail :: String -> Sem f a

Functor (Sem f)

Defined in Polysemy.Internal

Methods

fmap :: (a -> b) -> Sem f a -> Sem f b

(<$) :: a -> Sem f b -> Sem f a

Member Fixpoint r => MonadFix (Sem r)

Defined in Polysemy.Internal

Methods

mfix :: (a -> Sem r a) -> Sem r a

Applicative (Sem f)

Defined in Polysemy.Internal

Methods

pure :: a -> Sem f a

(<*>) :: Sem f (a -> b) -> Sem f a -> Sem f b

liftA2 :: (a -> b -> c) -> Sem f a -> Sem f b -> Sem f c

(*>) :: Sem f a -> Sem f b -> Sem f b

(<*) :: Sem f a -> Sem f b -> Sem f a

Member NonDet r => Alternative (Sem r)

Defined in Polysemy.Internal

Methods

empty :: Sem r a

(<|>) :: Sem r a -> Sem r a -> Sem r a

some :: Sem r a -> Sem r [a]

many :: Sem r a -> Sem r [a]

Member (Lift IO) r => MonadIO (Sem r)

This instance will only lift IO actions. If you want to lift into some other MonadIO type, use this instance, and handle it via the runIO interpretation.

Defined in Polysemy.Internal

Methods

liftIO :: IO a -> Sem r a

PandocEffects effs => PandocMonad (Sem effs)

PandocMonad instance so that pandoc functions can be run in the polysemy union effect

Defined in Knit.Effect.PandocMonad

Methods

lookupEnv :: String -> Sem effs (Maybe String)

getCurrentTime :: Sem effs UTCTime

getCurrentTimeZone :: Sem effs TimeZone

newStdGen :: Sem effs StdGen

newUniqueHash :: Sem effs Int

openURL :: String -> Sem effs (ByteString, Maybe MimeType)

readFileLazy :: FilePath -> Sem effs ByteString

readFileStrict :: FilePath -> Sem effs ByteString

glob :: String -> Sem effs [FilePath]

fileExists :: FilePath -> Sem effs Bool

getDataFileName :: FilePath -> Sem effs FilePath

getModificationTime :: FilePath -> Sem effs UTCTime

getCommonState :: Sem effs CommonState

putCommonState :: CommonState -> Sem effs ()

getsCommonState :: (CommonState -> a) -> Sem effs a

modifyCommonState :: (CommonState -> CommonState) -> Sem effs ()

logOutput :: LogMessage -> Sem effs ()

trace :: String -> Sem effs ()

Member (Random :: (Type -> Type) -> Type -> Type) effs => MonadRandom (Sem effs)

supply instance of MonadRandom for functions which require it

Defined in Knit.Effect.RandomFu

Methods

getRandomPrim :: Prim t -> Sem effs t

getRandomWord8 :: Sem effs Word8

getRandomWord16 :: Sem effs Word16

getRandomWord32 :: Sem effs Word32

getRandomWord64 :: Sem effs Word64

getRandomDouble :: Sem effs Double

getRandomNByteInteger :: Int -> Sem effs Integer

type Member (e :: (Type -> Type) -> Type -> Type) (r :: [(Type -> Type) -> Type -> Type]) = Member' e r

A proof that the effect e is available somewhere inside of the effect stack r.

data Lift (m :: Type -> Type) (z :: Type -> Type) a

An effect which allows a regular Monad m into the Sem ecosystem. Monadic actions in m can be lifted into Sem via sendM.

For example, you can use this effect to lift IO actions directly into Sem:

sendM (putStrLn "hello") :: Member (Lift IO) r => Sem r ()

That being said, you lose out on a significant amount of the benefits of Sem by using sendM directly in application code; doing so will tie your application code directly to the underlying monad, and prevent you from interpreting it differently. For best results, only use Lift in your effect interpreters.

Consider using trace and runTraceIO as a substitute for using putStrLn directly.

type Pandocs = Docs PandocWithRequirements

Type-alias for use with the Docs effect.

data ToPandoc m r

Pandoc writer, add any read format to current doc

data Requirement

ADT to allow inputs to request support, if necessary or possible, in the output format. E.g., Latex output in Html needs MathJax. But Latex needs to nothing to output in Latex. Vega-lite needs some script headers to output in Html and can't be output in other formats. For now, we support all the things we can in any output format so this just results in a runtime test.

Constructors

VegaSupport

Supported only for Html output.

LatexSupport

Supported in Html output (via MathJax) and Latex output.

Instances

Bounded Requirement

Defined in Knit.Effect.Pandoc

Methods

minBound :: Requirement

maxBound :: Requirement

Enum Requirement

Defined in Knit.Effect.Pandoc

Methods

succ :: Requirement -> Requirement

pred :: Requirement -> Requirement

toEnum :: Int -> Requirement

fromEnum :: Requirement -> Int

enumFrom :: Requirement -> [Requirement]

enumFromThen :: Requirement -> Requirement -> [Requirement]

enumFromTo :: Requirement -> Requirement -> [Requirement]

enumFromThenTo :: Requirement -> Requirement -> Requirement -> [Requirement]

Eq Requirement

Defined in Knit.Effect.Pandoc

Methods

(==) :: Requirement -> Requirement -> Bool

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

Ord Requirement

Defined in Knit.Effect.Pandoc

Methods

compare :: Requirement -> Requirement -> Ordering

(<) :: Requirement -> Requirement -> Bool

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

(>) :: Requirement -> Requirement -> Bool

(>=) :: Requirement -> Requirement -> Bool

max :: Requirement -> Requirement -> Requirement

min :: Requirement -> Requirement -> Requirement

Show Requirement

Defined in Knit.Effect.Pandoc

Methods

showsPrec :: Int -> Requirement -> ShowS

show :: Requirement -> String

showList :: [Requirement] -> ShowS

data PandocWriteFormat a where

Supported formats for writing current Pandoc

Constructors

WriteDocX :: PandocWriteFormat ByteString

WriteMarkDown :: PandocWriteFormat Text

WriteCommonMark :: PandocWriteFormat Text

WriteRST :: PandocWriteFormat Text

WriteLaTeX :: PandocWriteFormat Text

WriteHtml5 :: PandocWriteFormat Html

WriteHtml5String :: PandocWriteFormat Text

Instances

Show (PandocWriteFormat a)

Defined in Knit.Effect.Pandoc

Methods

showsPrec :: Int -> PandocWriteFormat a -> ShowS

show :: PandocWriteFormat a -> String

showList :: [PandocWriteFormat a] -> ShowS

data PandocReadFormat a where

Supported formats for adding to current Pandoc

Constructors

ReadDocX :: PandocReadFormat ByteString

ReadMarkDown :: PandocReadFormat Text

ReadCommonMark :: PandocReadFormat Text

ReadRST :: PandocReadFormat Text

ReadLaTeX :: PandocReadFormat Text

ReadHtml :: PandocReadFormat Text

Instances

Show (PandocReadFormat a)

Defined in Knit.Effect.Pandoc

Methods

showsPrec :: Int -> PandocReadFormat a -> ShowS

show :: PandocReadFormat a -> String

showList :: [PandocReadFormat a] -> ShowS

newPandoc

Arguments

:: (PandocEffects effs, Member Pandocs effs)

=> Text

name of document

-> Sem (ToPandoc ': effs) ()

-> Sem effs ()

Add the Pandoc stored in the writer-style ToPandoc effect to the named docs collection with the given name.

data NamedDoc a

Data type to hold one named document of type a.

Constructors

NamedDoc

Fields

• ndName :: Text
• ndDoc :: a

Instances

Functor NamedDoc

Defined in Knit.Effect.Docs

Methods

fmap :: (a -> b) -> NamedDoc a -> NamedDoc b

(<$) :: a -> NamedDoc b -> NamedDoc a

Foldable NamedDoc

Defined in Knit.Effect.Docs

Methods

fold :: Monoid m => NamedDoc m -> m

foldMap :: Monoid m => (a -> m) -> NamedDoc a -> m

foldr :: (a -> b -> b) -> b -> NamedDoc a -> b

foldr' :: (a -> b -> b) -> b -> NamedDoc a -> b

foldl :: (b -> a -> b) -> b -> NamedDoc a -> b

foldl' :: (b -> a -> b) -> b -> NamedDoc a -> b

foldr1 :: (a -> a -> a) -> NamedDoc a -> a

foldl1 :: (a -> a -> a) -> NamedDoc a -> a

toList :: NamedDoc a -> [a]

null :: NamedDoc a -> Bool

length :: NamedDoc a -> Int

elem :: Eq a => a -> NamedDoc a -> Bool

maximum :: Ord a => NamedDoc a -> a

minimum :: Ord a => NamedDoc a -> a

sum :: Num a => NamedDoc a -> a

product :: Num a => NamedDoc a -> a

Traversable NamedDoc

Defined in Knit.Effect.Docs

Methods

traverse :: Applicative f => (a -> f b) -> NamedDoc a -> f (NamedDoc b)

sequenceA :: Applicative f => NamedDoc (f a) -> f (NamedDoc a)

mapM :: Monad m => (a -> m b) -> NamedDoc a -> m (NamedDoc b)

sequence :: Monad m => NamedDoc (m a) -> m (NamedDoc a)

module Knit.Effect.PandocMonad

module Knit.Effect.PandocMonad

type LogWithPrefixesLE effs = LogWithPrefixes LogEntry effs

Constraint helper for LogEntry type with prefixes

data LogSeverity

Severity of message. Based on monad-logger.

Constructors

Diagnostic

Info

Warning

Error

Instances

Bounded LogSeverity

Defined in Knit.Effect.Logger

Methods

minBound :: LogSeverity

maxBound :: LogSeverity

Enum LogSeverity

Defined in Knit.Effect.Logger

Methods

succ :: LogSeverity -> LogSeverity

pred :: LogSeverity -> LogSeverity

toEnum :: Int -> LogSeverity

fromEnum :: LogSeverity -> Int

enumFrom :: LogSeverity -> [LogSeverity]

enumFromThen :: LogSeverity -> LogSeverity -> [LogSeverity]

enumFromTo :: LogSeverity -> LogSeverity -> [LogSeverity]

enumFromThenTo :: LogSeverity -> LogSeverity -> LogSeverity -> [LogSeverity]

Eq LogSeverity

Defined in Knit.Effect.Logger

Methods

(==) :: LogSeverity -> LogSeverity -> Bool

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

Ord LogSeverity

Defined in Knit.Effect.Logger

Methods

compare :: LogSeverity -> LogSeverity -> Ordering

(<) :: LogSeverity -> LogSeverity -> Bool

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

(>) :: LogSeverity -> LogSeverity -> Bool

(>=) :: LogSeverity -> LogSeverity -> Bool

max :: LogSeverity -> LogSeverity -> LogSeverity

min :: LogSeverity -> LogSeverity -> LogSeverity

Show LogSeverity

Defined in Knit.Effect.Logger

Methods

showsPrec :: Int -> LogSeverity -> ShowS

show :: LogSeverity -> String

showList :: [LogSeverity] -> ShowS

logAll :: [LogSeverity]

LogSeverity list used in order to output everything.

nonDiagnostic :: [LogSeverity]

LogSeverity list used to output all but Diagnostic. Diagnostic messages are sometimes useful for debugging but can get noisy depending on how you use it.

logLE :: Member (Logger LogEntry) effs => LogSeverity -> Text -> Sem effs ()

Add one log-entry of the LogEntry type.

wrapPrefix :: Member PrefixLog effs => Text -> Sem effs a -> Sem effs a

Add a prefix for the block of code.

filteredLogEntriesToIO :: MonadIO (Sem effs) => [LogSeverity] -> Sem (Logger LogEntry ': (PrefixLog ': effs)) x -> Sem effs x

Run the Logger and PrefixLog effects using the preferred handler and filter output in any Polysemy monad with IO in the union.