LuaLib/Stack.lua at main · Rouneq/LuaLib · GitHub

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--- Stack Table
--- Uses a table as stack, use <table>:push(value) and <table>:pop()
-- Lua 5.1 compatible

---@classStack
Stack= {}

--- Create a Table with stack functions
functionStack:Create()

-- stack table
localt= {}
-- entry table
t._et= {}

--- Push a value on to the stack
---@varargany @Values to push on the stack
functiont:push(...)
if...then
localtargs= {...}
-- add values
for_,vinipairs(targs) do
table.insert(self._et, v)
end
end
end

--- Pop a value from the stack
---@paramnum?integer Number of values to pop off the stack
---@return...any
functiont:pop(num)

-- get num values from stack
num=numor1

-- return table
localentries= {}

-- get values into entries
fori=1, numdo
-- get last entry
if#self._et~=0then
table.insert(entries, self._et[#self._et])
-- remove last value
table.remove(self._et)
else
break
end
end

-- return unpacked entries
returnunpack(entries)
end

--- The number of entries on the stack
functiont:getn()
return#self._et
end

--- Print the list of values on the stack
functiont:list()
fori,vinpairs(self._et) do
print(i, v)
end
end

--- Returs the list of values on the stack in a string from (one line per entry)
---@returnstring
functiont:tostring()
returntable.concat(self._et, "\n")
end

returnt
end

returnStack