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solution = function(sol)
if type(sol) ~= "string" then
local solt = sol
sol = "["
if solt.idea then
sol = sol .. "idea,"
end
if solt.name then
sol = sol .. "strings/solution={"..solt.name.."},"
end
sol = sol .. "] " .. (solt.text or "")
end
return [[\begin{solution}]]..sol..[[\end{solution}]]
end
subexercise = function(se)
local pts = ""
local sols = ""
if type(se) ~= "string" then
local set = se
se = "["
if set.points then
pts = [[\points{]] .. set.points ..[[}]]
end
if set.solution then
sols = sols .. solution(set.solution)
end
if set.altsolutions then
for _,sol in ipairs(set.altsolutions) do
sols = sols .. solution(sol)
end
end
se = se .. "]{" .. (set.task or "") .. "}"
end
return [[\subtask]]..se .. pts .. sols
end
exercise = function(ex)
local ece = [[\begin{exercise}[]]
if ex.firstline then
ece = ece .. [[firstline={]] .. ex.firstline .. [[},]]
end
if ex.points then
ece = ece .. [[points={]] .. ex.points .. [[},]]
end
if ex.name then
ece = ece .. [[name={]] .. ex.name .. [[},]]
end
if ex.options then
ece = ece .. ex.options .. ","
end
ece = ece .. "]{}"
if ex.task then
ece = ece .. [[\begin{maintask}]] .. ex.task
.. [[\end{maintask}]]
end
if ex.solution then
ece = ece .. solution(ex.solution)
end
if ex.altsolutions then
for _,sol in ipairs(ex.altsolutions) do
ece = ece .. solution(sol)
end
end
if ex.subexercises then
ece = ece .. [[\begin{subtasks}]]
for _,se in ipairs(ex.subexercises) do
ece = ece .. subexercise(se)
end
ece = ece .. [[\end{subtasks}]]
end
ece = ece .. "\n" .. [[\end{exercise}]]
print(ece)
return ece
end
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