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2021-11-27Lua: use package pandoc-lua-marshal (#7719)Albert Krewinkel1-27/+3
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.
2021-10-29Lua: use hslua module abstraction where possibleAlbert Krewinkel1-19/+37
This will make it easier to generate module documentation in the future.
2021-10-26Lua: marshal ListAttributes values as userdata objectsAlbert Krewinkel1-1/+0
2021-10-26Lua: marshal Block values as userdata objectsAlbert Krewinkel1-4/+0
Properties of Block values are marshalled lazily, which generally improves performance considerably. Script users may also notice the following differences: - Block element properties can no longer be accessed by numerical indexing of the `.c` field. The `.c` property now serves as an alias for `.content`, so some filter that used this undocumented method for property access may continue to work, while others will need to be updated and use proper property names. - The marshalled Block elements now have a `show` method, and a `__tostring` metamethod. Both return the Haskell string representation of the element. - Block values now have the Lua type `userdata` instead of `table`.
2021-10-25Lua: marshal Citation values as userdata objectsAlbert Krewinkel1-1/+0
2021-10-22Lua: marshal Version values as userdataAlbert Krewinkel1-3/+3
2021-10-22Switch to hslua-2.0Albert Krewinkel1-40/+26
The new HsLua version takes a somewhat different approach to marshalling and unmarshalling, relying less on typeclasses and more on specialized types. This allows for better performance and improved error messages. Furthermore, new abstractions allow to document the code and exposed functions.
2021-01-08Update copyright notices for 2021 (#7012)Albert Krewinkel1-1/+1
2020-03-15Use implicit Prelude (#6187)Albert Krewinkel1-1/+0
* Use implicit Prelude The previous behavior was introduced as a fix for #4464. It seems that this change alone did not fix the issue, and `stack ghci` and `cabal repl` only work with GHC 8.4.1 or newer, as no custom Prelude is loaded for these versions. Given this, it seems cleaner to revert to the implicit Prelude. * PandocMonad: remove outdated check for base version Only base versions 4.9 and later are supported, the check for `MIN_VERSION_base(4,8,0)` is therefore unnecessary. * Always use custom prelude Previously, the custom prelude was used only with older GHC versions, as a workaround for problems with ghci. The ghci problems are resolved by replacing package `base` with `base-noprelude`, allowing for consistent use of the custom prelude across all GHC versions.
2020-03-13Update copyright year (#6186)Albert Krewinkel1-1/+1
* Update copyright year * Copyright: add notes for Lua and Jira modules
2019-09-08Replace Element and makeHierarchical with makeSections.John MacFarlane1-5/+0
Text.Pandoc.Shared: + Remove `Element` type [API change] + Remove `makeHierarchicalize` [API change] + Add `makeSections` [API change] + Export `deLink` [API change] Now that we have Divs, we can use them to represent the structure of sections, and we don't need a special Element type. `makeSections` reorganizes a block list, adding Divs with class `section` around sections, and adding numbering if needed. This change also fixes some longstanding issues recognizing section structure when the document contains Divs. Closes #3057, see also #997. All writers have been changed to use `makeSections`. Note that in the process we have reverted the change c1d058aeb1c6a331a2cc22786ffaab17f7118ccd made in response to #5168, which I'm not completely sure was a good idea. Lua modules have also been adjusted accordingly. Existing lua filters that use `hierarchicalize` will need to be rewritten to use `make_sections`.
2019-06-12Lua: add a `clone()` method to all AST elements (#5572)Albert Krewinkel1-0/+46
Closes: #5568
2019-05-29Lua: add Version type to simplify comparisonsAlbert Krewinkel1-0/+28
Version specifiers like `PANDOC_VERSION` and `PANDOC_API_VERSION` are turned into `Version` objects. The objects simplify version-appropriate comparisons while maintaining backward-compatibility. A function `pandoc.types.Version` is added as part of the newly introduced module `pandoc.types`, allowing users to create version objects in scripts.