Re: Mutual recursion

[Andrew Gierth <andrew@...>]

>>>>> "Martin" == Martin  <dyngeccetor8@disroot.org> writes:

 Martin> I believe you can solve a lot of problems with hammer, duct
 Martin> tape and Lua "debug" module.

Might be preferable to avoid the debug module in general; metatables
can do the job too (cqueues does something like this):

--[[ main.lua ]]
local m = require 'mod1'
print(m.foo(3))

--[[ mod1.lua ]]
local M = {}
local m2 = require 'mod2'
function M.foo(n)
	print("in mod1.foo",n)
	if n and n > 0 then
		m2.bar(n - 1)
	end
	return "foo";
end
return M

--[[ mod2.lua ]]
-- Lazy loading to avoid mutual recursion issue
local function loader(M,k)
	setmetatable(M,nil)
	local m1 = require 'mod1'
	function M.bar(n)
		print("in mod2.bar",n)
		return m1.foo(n)
	end
	return rawget(M,k)
end
return setmetatable({}, {__index = loader})

-- 
Andrew.
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