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|
{-# LANGUAGE OverloadedStrings #-}
{- |
Module : Text.Pandoc.Lua
Copyright : Copyright © 2017-2021 Albert Krewinkel
License : GNU GPL, version 2 or above
Maintainer : Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
Stability : alpha
Pandoc's Lua globals.
-}
module Text.Pandoc.Lua.Global
( Global (..)
, setGlobals
) where
import HsLua as Lua
import HsLua.Module.Version (pushVersion)
import Paths_pandoc (version)
import Text.Pandoc.Class.CommonState (CommonState)
import Text.Pandoc.Definition (Pandoc, pandocTypesVersion)
import Text.Pandoc.Error (PandocError)
import Text.Pandoc.Lua.Marshal.CommonState (pushCommonState)
import Text.Pandoc.Lua.Marshal.Pandoc (pushPandoc)
import Text.Pandoc.Lua.Marshal.ReaderOptions (pushReaderOptionsReadonly)
import Text.Pandoc.Lua.Orphans ()
import Text.Pandoc.Options (ReaderOptions)
import qualified Data.Text as Text
-- | Permissible global Lua variables.
data Global =
FORMAT Text.Text
| PANDOC_API_VERSION
| PANDOC_DOCUMENT Pandoc
| PANDOC_READER_OPTIONS ReaderOptions
| PANDOC_SCRIPT_FILE FilePath
| PANDOC_STATE CommonState
| PANDOC_VERSION
-- Cannot derive instance of Data because of CommonState
-- | Set all given globals.
setGlobals :: [Global] -> LuaE PandocError ()
setGlobals = mapM_ setGlobal
setGlobal :: Global -> LuaE PandocError ()
setGlobal global = case global of
-- This could be simplified if Global was an instance of Data.
FORMAT format -> do
Lua.push format
Lua.setglobal "FORMAT"
PANDOC_API_VERSION -> do
pushVersion pandocTypesVersion
Lua.setglobal "PANDOC_API_VERSION"
PANDOC_DOCUMENT doc -> do
pushPandoc doc
Lua.setglobal "PANDOC_DOCUMENT"
PANDOC_READER_OPTIONS ropts -> do
pushReaderOptionsReadonly ropts
Lua.setglobal "PANDOC_READER_OPTIONS"
PANDOC_SCRIPT_FILE filePath -> do
Lua.push filePath
Lua.setglobal "PANDOC_SCRIPT_FILE"
PANDOC_STATE commonState -> do
pushCommonState commonState
Lua.setglobal "PANDOC_STATE"
PANDOC_VERSION -> do
pushVersion version
Lua.setglobal "PANDOC_VERSION"
|
