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Original file line number | Diff line number | Diff line change |
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@@ -2,7 +2,7 @@ | |
{-# LANGUAGE OverloadedStrings #-} | ||
{- | | ||
Module : Text.Pandoc.Lua.Marshal.Chunks | ||
Copyright : © 2022 Albert Krewinkel | ||
Copyright : © 2022-2024 Albert Krewinkel | ||
License : GPL-2.0-or-later | ||
Maintainer : Albert Krewinkel <[email protected]> | ||
|
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Original file line number | Diff line number | Diff line change |
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|
@@ -2,6 +2,7 @@ | |
{-# LANGUAGE FlexibleContexts #-} | ||
{-# LANGUAGE FlexibleInstances #-} | ||
{-# LANGUAGE GeneralizedNewtypeDeriving #-} | ||
{-# LANGUAGE LambdaCase #-} | ||
{-# LANGUAGE MultiParamTypeClasses #-} | ||
{-# LANGUAGE OverloadedStrings #-} | ||
{-# OPTIONS_GHC -fno-warn-orphans #-} | ||
|
@@ -11,7 +12,7 @@ | |
License : GPL-2.0-or-later | ||
Maintainer : Albert Krewinkel <[email protected]> | ||
PandocMonad instance which allows execution of Lua operations and which | ||
PandocMonad instance that allows execution of Lua operations; it | ||
uses Lua to handle state. | ||
-} | ||
module Text.Pandoc.Lua.PandocLua | ||
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@@ -22,6 +23,7 @@ module Text.Pandoc.Lua.PandocLua | |
import Control.Monad.Catch (MonadCatch, MonadMask, MonadThrow) | ||
import Control.Monad.Except (MonadError (catchError, throwError)) | ||
import Control.Monad.IO.Class (MonadIO) | ||
import Data.Default (def) | ||
import HsLua as Lua | ||
import Text.Pandoc.Class (PandocMonad (..)) | ||
import Text.Pandoc.Error (PandocError (..)) | ||
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@@ -77,8 +79,13 @@ instance PandocMonad PandocLua where | |
getModificationTime = IO.getModificationTime | ||
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||
getCommonState = PandocLua $ do | ||
Lua.getfield registryindex "PANDOC_STATE" | ||
forcePeek $ peekCommonState Lua.top `lastly` pop 1 | ||
-- initialize with the default value if is hadn't been initialized yet. | ||
Lua.getfield registryindex "PANDOC_STATE" >>= \case | ||
TypeNil -> do | ||
pop 1 -- pop nil | ||
unPandocLua $ putCommonState def | ||
return def | ||
_ -> forcePeek $ peekCommonState Lua.top `lastly` pop 1 | ||
putCommonState cst = PandocLua $ do | ||
pushCommonState cst | ||
Lua.pushvalue Lua.top | ||
|
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