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|
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-
Copyright (C) 2014-2016 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
{- |
Module : Text.Pandoc.Readers.Org.Options
Copyright : Copyright (C) 2014-2016 Albert Krewinkel
License : GNU GPL, version 2 or above
Maintainer : Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
Define the Org-mode parser state.
-}
module Text.Pandoc.Readers.Org.ParserState
( OrgParserState (..)
, OrgParserLocal (..)
, OrgNoteRecord
, HasReaderOptions (..)
, HasQuoteContext (..)
, F(..)
, askF
, asksF
, trimInlinesF
, runF
, returnF
, ExportSettingSetter
, ExportSettings (..)
, setExportSubSuperscripts
, setExportDrawers
, modifyExportSettings
) where
import Control.Monad (liftM, liftM2)
import Control.Monad.Reader (Reader, runReader, ask, asks, local)
import Data.Default (Default(..))
import qualified Data.Map as M
import qualified Data.Set as Set
import Text.Pandoc.Builder ( Inlines, Blocks, HasMeta(..),
trimInlines )
import Text.Pandoc.Definition ( Meta(..), nullMeta )
import Text.Pandoc.Options ( ReaderOptions(..) )
import Text.Pandoc.Parsing ( HasHeaderMap(..)
, HasIdentifierList(..)
, HasLastStrPosition(..)
, HasQuoteContext(..)
, HasReaderOptions(..)
, ParserContext(..)
, QuoteContext(..)
, SourcePos )
-- | An inline note / footnote containing the note key and its (inline) value.
type OrgNoteRecord = (String, F Blocks)
-- | Table of footnotes
type OrgNoteTable = [OrgNoteRecord]
-- | Map of functions for link transformations. The map key is refers to the
-- link-type, the corresponding function transforms the given link string.
type OrgLinkFormatters = M.Map String (String -> String)
-- | Export settings <http://orgmode.org/manual/Export-settings.html>
-- These settings can be changed via OPTIONS statements.
data ExportSettings = ExportSettings
{ exportSubSuperscripts :: Bool -- ^ TeX-like syntax for sub- and superscripts
, exportDrawers :: Either [String] [String]
-- ^ Specify drawer names which should be exported. @Left@ names are
-- explicitly excluded from the resulting output while @Right@ means that
-- only the listed drawer names should be included.
}
-- | Org-mode parser state
data OrgParserState = OrgParserState
{ orgStateOptions :: ReaderOptions
, orgStateAnchorIds :: [String]
, orgStateEmphasisCharStack :: [Char]
, orgStateEmphasisNewlines :: Maybe Int
, orgStateExportSettings :: ExportSettings
, orgStateLastForbiddenCharPos :: Maybe SourcePos
, orgStateLastPreCharPos :: Maybe SourcePos
, orgStateLastStrPos :: Maybe SourcePos
, orgStateLinkFormatters :: OrgLinkFormatters
, orgStateMeta :: Meta
, orgStateMeta' :: F Meta
, orgStateNotes' :: OrgNoteTable
, orgStateParserContext :: ParserContext
, orgStateIdentifiers :: Set.Set String
, orgStateHeaderMap :: M.Map Inlines String
}
data OrgParserLocal = OrgParserLocal { orgLocalQuoteContext :: QuoteContext }
instance Default OrgParserLocal where
def = OrgParserLocal NoQuote
instance HasReaderOptions OrgParserState where
extractReaderOptions = orgStateOptions
instance HasMeta OrgParserState where
setMeta field val st =
st{ orgStateMeta = setMeta field val $ orgStateMeta st }
deleteMeta field st =
st{ orgStateMeta = deleteMeta field $ orgStateMeta st }
instance HasLastStrPosition OrgParserState where
getLastStrPos = orgStateLastStrPos
setLastStrPos pos st = st{ orgStateLastStrPos = Just pos }
instance HasQuoteContext st (Reader OrgParserLocal) where
getQuoteContext = asks orgLocalQuoteContext
withQuoteContext q = local (\s -> s{orgLocalQuoteContext = q})
instance HasIdentifierList OrgParserState where
extractIdentifierList = orgStateIdentifiers
updateIdentifierList f s = s{ orgStateIdentifiers = f (orgStateIdentifiers s) }
instance HasHeaderMap OrgParserState where
extractHeaderMap = orgStateHeaderMap
updateHeaderMap f s = s{ orgStateHeaderMap = f (orgStateHeaderMap s) }
instance Default ExportSettings where
def = defaultExportSettings
instance Default OrgParserState where
def = defaultOrgParserState
defaultOrgParserState :: OrgParserState
defaultOrgParserState = OrgParserState
{ orgStateOptions = def
, orgStateAnchorIds = []
, orgStateEmphasisCharStack = []
, orgStateEmphasisNewlines = Nothing
, orgStateExportSettings = def
, orgStateLastForbiddenCharPos = Nothing
, orgStateLastPreCharPos = Nothing
, orgStateLastStrPos = Nothing
, orgStateLinkFormatters = M.empty
, orgStateMeta = nullMeta
, orgStateMeta' = return nullMeta
, orgStateNotes' = []
, orgStateParserContext = NullState
, orgStateIdentifiers = Set.empty
, orgStateHeaderMap = M.empty
}
defaultExportSettings :: ExportSettings
defaultExportSettings = ExportSettings
{ exportSubSuperscripts = True
, exportDrawers = Left ["LOGBOOK"]
}
--
-- Setter for exporting options
--
type ExportSettingSetter a = a -> ExportSettings -> ExportSettings
-- | Set export options for sub/superscript parsing. The short syntax will
-- not be parsed if this is set set to @False@.
setExportSubSuperscripts :: ExportSettingSetter Bool
setExportSubSuperscripts val es = es { exportSubSuperscripts = val }
-- | Set export options for drawers. See the @exportDrawers@ in ADT
-- @ExportSettings@ for details.
setExportDrawers :: ExportSettingSetter (Either [String] [String])
setExportDrawers val es = es { exportDrawers = val }
-- | Modify a parser state
modifyExportSettings :: ExportSettingSetter a -> a -> OrgParserState -> OrgParserState
modifyExportSettings setter val state =
state { orgStateExportSettings = setter val . orgStateExportSettings $ state }
--
-- Parser state reader
--
-- | Reader monad wrapping the parser state. This is used to delay evaluation
-- until all relevant information has been parsed and made available in the
-- parser state. See also the newtype of the same name in
-- Text.Pandoc.Parsing.
newtype F a = F { unF :: Reader OrgParserState a
} deriving (Functor, Applicative, Monad)
instance Monoid a => Monoid (F a) where
mempty = return mempty
mappend = liftM2 mappend
mconcat = fmap mconcat . sequence
runF :: F a -> OrgParserState -> a
runF = runReader . unF
askF :: F OrgParserState
askF = F ask
asksF :: (OrgParserState -> a) -> F a
asksF f = F $ asks f
trimInlinesF :: F Inlines -> F Inlines
trimInlinesF = liftM trimInlines
returnF :: Monad m => a -> m (F a)
returnF = return . return
|
