Lua: use package pandoc-lua-marshal (#7719)

The marshaling functions for pandoc's AST are extracted into a separate
package. The package comes with a number of changes:

  - Pandoc's List module was rewritten in C, thereby improving error
    messages.

  - Lists of `Block` and `Inline` elements are marshaled using the new
    list types `Blocks` and `Inlines`, respectively. These types
    currently behave identical to the generic List type, but give better
    error messages. This also opens up the possibility of adding
    element-specific methods to these lists in the future.

  - Elements of type `MetaValue` are no longer pushed as values which
    have `.t` and `.tag` properties. This was already true for
    `MetaString` and `MetaBool` values, which are still marshaled as Lua
    strings and booleans, respectively. Affected values:

      + `MetaBlocks` values are marshaled as a `Blocks` list;

      + `MetaInlines` values are marshaled as a `Inlines` list;

      + `MetaList` values are marshaled as a generic pandoc `List`s.

      + `MetaMap` values are marshaled as plain tables and no longer
        given any metatable.

  - The test suite for marshaled objects and their constructors has
    been extended and improved.

  - A bug in Citation objects, where setting a citation's suffix
    modified it's prefix, has been fixed.

1 files changed, 0 insertions, 70 deletions

diff --git a/src/Text/Pandoc/Lua/Marshaling/CommonState.hs b/src/Text/Pandoc/Lua/Marshaling/CommonState.hs
deleted file mode 100644
index 857551598..000000000
--- a/src/Text/Pandoc/Lua/Marshaling/CommonState.hs
+++ /dev/null
@@ -1,70 +0,0 @@
-{-# LANGUAGE OverloadedStrings    #-}
-{- |
-   Module      : Text.Pandoc.Lua.Marshaling.CommonState
-   Copyright   : © 2012-2021 John MacFarlane
-                 © 2017-2021 Albert Krewinkel
-   License     : GNU GPL, version 2 or above
-   Maintainer  : Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
-   Stability   : alpha
-
-Instances to marshal (push) and unmarshal (peek) the common state.
--}
-module Text.Pandoc.Lua.Marshaling.CommonState
-  ( typeCommonState
-  , peekCommonState
-  , pushCommonState
-  ) where
-
-import HsLua.Core
-import HsLua.Marshalling
-import HsLua.Packaging
-import Text.Pandoc.Class (CommonState (..))
-import Text.Pandoc.Logging (LogMessage, showLogMessage)
-import Text.Pandoc.Lua.Marshaling.List (pushPandocList)
-
--- | Lua type used for the @CommonState@ object.
-typeCommonState :: LuaError e => DocumentedType e CommonState
-typeCommonState = deftype "pandoc CommonState" []
-  [ readonly "input_files" "input files passed to pandoc"
-      (pushPandocList pushString, stInputFiles)
-
-  , readonly "output_file" "the file to which pandoc will write"
-      (maybe pushnil pushString, stOutputFile)
-
-  , readonly "log" "list of log messages"
-      (pushPandocList (pushUD typeLogMessage), stLog)
-
-  , readonly "request_headers" "headers to add for HTTP requests"
-      (pushPandocList (pushPair pushText pushText), stRequestHeaders)
-
-  , readonly "resource_path"
-      "path to search for resources like included images"
-      (pushPandocList pushString, stResourcePath)
-
-  , readonly "source_url" "absolute URL + dir of 1st source file"
-      (maybe pushnil pushText, stSourceURL)
-
-  , readonly "user_data_dir" "directory to search for data files"
-      (maybe pushnil pushString, stUserDataDir)
-
-  , readonly "trace" "controls whether tracing messages are issued"
-      (pushBool, stTrace)
-
-  , readonly "verbosity" "verbosity level"
-      (pushString . show, stVerbosity)
-  ]
-
-peekCommonState :: LuaError e => Peeker e CommonState
-peekCommonState = peekUD typeCommonState
-
-pushCommonState :: LuaError e => Pusher e CommonState
-pushCommonState = pushUD typeCommonState
-
-typeLogMessage :: LuaError e => DocumentedType e LogMessage
-typeLogMessage = deftype "pandoc LogMessage"
-  [ operation Index $ defun "__tostring"
-      ### liftPure showLogMessage
-      <#> udparam typeLogMessage "msg" "object"
-      =#> functionResult pushText "string" "stringified log message"
-  ]
-  mempty -- no members