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use "core"
lua> "CLASSES = {}"
immediately
compile [@, me] to: Lua value "self"
action [new %classname %inst]
=lua "setmetatable(\%inst, CLASSES[\%classname])"
immediately
parse [new %classname] as: new %classname {}
immediately
compile [call method %method] to: Lua value "self:\(%method as lua expr)"
parse [as %instance %body] as
result of
%old_self <- (me)
(me) <- %instance
try
%body
..and if it barfs %msg
(me) <- %old_self
barf %msg
..or if it succeeds
(me) <- %old_self
compile [object %classname %class_body] to
%lua <-
Lua ".."
do
local class = {name=\(%classname as lua expr)}
setmetatable(class, {__tostring=function(cls) return cls.name end})
CLASSES[class.name] = class
class.__index = class
class.class = class
if: %class_body.type != "Block"
%class_body <- [%class_body]
for %statement in %class_body
assume: (%statement.type is "Action") and (%statement.stub is "action % %")
to %lua write "\n class."
to %lua write (%statement as lua)
to %lua write ".."
class.__tostring = class["A"..string.as_lua_id("as text")]
end
return %lua
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