try implement the macro in Lua

syntax.lua

-- try to implement a naive macro in Lua
-- TODO complete it

function syntax(name)
    assert(type(name) == "string")
    local name, args = name:match("([%w_]+)%(?([%w_,]+)%)?")
    return function(body)
        assert(type(body) == "string")
    end
end

function fun(body)
    load("function "..body)()
end

-- define a macro
syntax "fun(body)"
[[
function body
]]

lamba = function()
    var = 10
    -- use a macro
    fun [[foo()
        print(var)
    end]]

    foo()
end

lamba()