Changelog

pandoc-lua-marshal uses PVP Versioning.

0.1.3

Release pending.

Lua changes

• The traversal order of filters can now be selected by setting the key traverse to either 'topdown' or 'typewise'; the default remains 'typewise'.

  Topdown traversals can be cut short by returning false as a second value from the filter function. No child-element of the returned element is processed in that case.

• All types can be compared. Previously, comparing values of different types would lead to errors in a number of cases.

• Lists now have an __eq metamethod. List equality is checked by comparing both lists element-wise. Two lists are equal if they have the same type and have equal elements.

• If start indices in List:find and List:find_if are negative the start index is relative to the list length.

• TableFoot, TableHead, and Row values are marshaled as userdata objects.

Haskell code

• Text.Pandoc.Lua.Marshal.Filter exports the new type WalkingOrder. The type Filter now contains the the traversal specifier as a field.

• New modules for TableFoot, TableHead, and Row, defining the usual marshaling methods and constructor functions for these types.

0.1.2

Released 2021-12-10.

• Restored backward compatible retrieval of Rows. Cells can be either a userdata value or a table.

0.1.1

Released 2021-12-10.

Behavior of Lua objects

• Lists of Inline values and lists of Block values are now pushed with their own metatables (named "Inlines" and "Blocks").

• The types Block, Blocks, Inline, Inlines, and Pandoc now all have a method walk that applies a filter to the document subtree.

• Changed behavior for Cell values: these are now pushed as userdata; the old table-based structure is still accepted when retrieving a Cell from the stack.

Haskell code

• Module Text.Pandoc.Lua.Marshal.Cell exports the constructor function mkCell, the type definition typeCell and the fuzzy peeker peekCellFuzzy.

• Added a new module Text.Pandoc.Lua.Marshal.Filter that handles Lua filters.

• Added functions for filtering:

  • Module Text.Pandoc.Lua.Marshal.Block:

    • walkBlockSplicing: walk an AST element, applying a filter on each Block and splicing the result back into the list.
    • walkBlocks: walk an AST element, modifying lists of Block elements by applying the Blocks filter function.

  • Module Text.Pandoc.Lua.Marshal.Inline:

    • walkInlineSplicing: walk an AST element, applying a filter on each Inline and splicing the result back into the list.
    • walkInlines: walk an AST element, modifying lists of Inline elements by applying the Inlines filter function.

  • Module Text.Pandoc.Lua.Marshal.Pandoc:

    • applyFully: fully apply a filter on a Pandoc document.

• New internal modules:

  • Text.Pandoc.Lua.SpliceList: defines a helper type used to walk a list of elements in a way that replaces the element by splicing the function result back into the list.

    The module is a slight rewrite of pandoc’s SingletonsList.

  • Text.Pandoc.Lua.Walk: handles walking of the document tree while modifying elements via filter functions. This is a re-implementation of large parts of pandoc’s T.P.Lua.Filter module.

  • Text.Pandoc.Lua.Marshal.Shared: provides helper functions used in multiple Lua type definitions.

0.1.0.1

Released 2021-11-28.

• Added test-simpletable.lua to the list of extra-source-files.

0.1.0

Released 2021-11-28.

• Released into the wild. May it live long and prosper.