From 56fb854ad85dafff2016892bd6d2c5d24423bff0 Mon Sep 17 00:00:00 2001
From: Albert Krewinkel <albert@zeitkraut.de>
Date: Tue, 22 Aug 2017 22:02:30 +0200
Subject: Text.Pandoc.Lua: respect metatable when getting filters
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This change makes it possible to define a catch-all function using lua's
metatable lookup functionality.
function catch_all(el)
…
end
return {
setmetatable({}, {__index = function(_) return catch_all end})
}
A further effect of this change is that the map with filter functions
now only contains functions corresponding to AST element constructors.
---
test/lua/metatable-catch-all.lua | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
create mode 100644 test/lua/metatable-catch-all.lua
(limited to 'test/lua')
diff --git a/test/lua/metatable-catch-all.lua b/test/lua/metatable-catch-all.lua
new file mode 100644
index 000000000..05df16bbf
--- /dev/null
+++ b/test/lua/metatable-catch-all.lua
@@ -0,0 +1,20 @@
+local num_inlines = 0
+
+function catch_all(el)
+ if el.tag and pandoc.Inline.constructor[el.tag] then
+ num_inlines = num_inlines + 1
+ end
+end
+
+function Pandoc(blocks, meta)
+ return pandoc.Pandoc {
+ pandoc.Para{pandoc.Str(num_inlines)}
+ }
+end
+
+return {
+ setmetatable(
+ {Pandoc = Pandoc},
+ {__index = function(_) return catch_all end}
+ )
+}
--
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