This package provides functions to marshal and unmarshal pandoc
document types to and from Lua.
The values of most types are pushed to pandoc as “userdata”
objects that wrap a stable pointer to the Haskell value; these
objects come with methods to access and modify their properties.
Sequences are pushed as normal Lua tables, but are augmented with
convenience functions.
Update list module, thereby introducing a new method iter;
the function returns an iterator that steps through list
values on each call.
Added support for __toinline and __toblock metamethods. If
the metamethods are available on a Lua object and return an
appropriate value, then that returned value will be used
during unmarshalling.
0.2.8
Released 2024-09-21.
Update list module, thereby introducing a new method at and
an extended constructor for List types.
0.2.7.1
Released 2024-07-02.
Relaxed the upper bound of tasty-quickcheck, used in tests.
Now allows version 0.11.
Update documentation on constructors; the descriptions now
match those in the pandoc docs.
0.2.7
Released 2024-05-06.
Let the behavior of content attributes on BulletList and
OrderedList elements match that of the constructor by treating
a list of Block elements as a list of single-block items. The
following assertion now holds true:
local content = {pandoc.Plain "one", pandoc.Plain "two"}
local bl = pandoc.BulletList{}
bl.content = content
assert(bl == pandoc.BulletList(content))
0.2.6
Released 2024-03-29.
Fixed a bug that caused problems with empty Block lists in
the content attributes of Div, Figure, and BlockQuote
elements.
0.2.5
Released 2024-03-04.
The clone method on Blocks and Inlines elements now
creates deep copies of the lists.
0.2.4
Released 2024-01-19.
Relaxed upper bound for aeson, allowing aeson-2.2.*.
0.2.3
Released 2024-01-19.
Relaxed upper bound for text, containers, and bytestring,
allowing text-2.1, containers-0.7, and bytestring-0.12.
0.2.2
Released 2023-03-15.
Add __tostring metamethods to Blocks and Inlines.
0.2.1.1
Released 2023-03-13.
The version constraints for hslua packages have been relaxed;
other changes in hslua 2.3.* do not affect this package.
0.2.1
Released 2023-02-11.
All userdata types have been given a __tojson metamethod.
The methods return the default JSON representations of AST
objects.
0.2.0
Released 2023-01-18.
Depend on pandoc-types 1.23: the Null Block constructor has
been removed, and a Figure constructor has been added.
Support for Lua 5.3 has been dropped; the package now requires
hslua 2.2 or later.
The implementation for List has been moved to the separate
hslua-list module. This module no longer contains C code.
0.1.7
Released 2022-07-16.
Allow Blocks to be passed as Caption value. The resulting
caption has the Blocks as its long version and no short
version.
Add clone method to Pandoc elements.
0.1.6.1
Released 2022-06-10.
Provide better error messages when fuzzy retrieval of Inlines
or Blocks fails.
Relax upper bound for text, allow text-2.0.
0.1.6
Released 2022-06-03.
Fix applyFully: the function always traversed the document
type-wise, never topdown.
Avoid shadowing of a function name that was added in
hslua-2.2.
Support concatenating of Pandoc values with the .. operator.
0.1.5.1
Released 2022-02-19.
Relax upper bound for lua and hslua.
0.1.5
Released 2022-02-17.
Allow any type of callable object as argument to List
functions filter, map, and find_if. These previously
required the argument to be of type function, which was too
restrictive.
Inline: the type of Image captions is now Inlines instead
of List.
0.1.4
Released 2022-01-29.
Export AttributeList type and marshaling functions from
Text.Pandoc.Marshal.Attr, namely typeAttributeList,
peekAttributeList, and pushAttributeList.
Update to hslua 2.1, making use of the new utility functions.
0.1.3.1
Released 2022-01-14.
Fixed a bug in List.include that was causing the Lua stack
to overflow when the function was applied to long lists.
0.1.3
Released 2021-12-23.
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.
