Rename 'lib' directory to 'src'

src/list.lua

@@ -0,0 +1,83 @@
+--- List
+
+local List = {}
+local mt = {__index = List}
+
+--- Creates a new List.
+-- @return A new list
+function List.new()
+   return setmetatable({
+      size = 0,
+   }, mt)
+end
+
+--- Clears the List completely.
+-- @return self
+function List:clear()
+   for i = 1, self.size do
+      local o = self[i]
+
+      self[o] = nil
+      self[i] = nil
+   end
+
+   self.size = 0
+
+   return self
+end
+
+--- Adds an object to the List.
+-- @param obj The object to add
+-- @return self
+function List:add(obj) -- obj can not be a number and also not the string "size"
+   local size = self.size + 1
+
+   self[size] = obj
+   self[obj]  = size
+   self.size  = size
+
+   return self
+end
+
+--- Removes an object from the List.
+-- @param obj The object to remove
+-- @return self
+function List:remove(obj)
+   local index = self[obj]
+   if not index then return end
+   local size  = self.size
+
+   if index == size then
+      self[size] = nil
+   else
+      local other = self[size]
+
+      self[index] = other
+      self[other] = index
+
+      self[size] = nil
+   end
+
+   self[obj] = nil
+   self.size = size - 1
+end
+
+--- Gets an object by numerical index.
+-- @param index The index to look at
+-- @return The object at the index
+function List:get(index)
+   return self[index]
+end
+
+--- Gets if the List has the object.
+-- @param obj The object to search for
+-- true if the list has the object, false otherwise
+function List:has(obj)
+   return self[obj] and true
+end
+
+return setmetatable(List, {
+   __call = function()
+      return List.new()
+   end,
+})