Module: SDCMeta::DataStorage

Included in:
SDC::Data
Defined in:
lib/include/DataStorage.rb

Constant Summary collapse

SYMBOL_PREFIX =

If an actual symbol is not needed, e.g. for one-time draw routines

"_UNKNOWN_"

Instance Method Summary collapse

Instance Method Details

#clear_containers ⇒ Object 



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# File 'lib/include/DataStorage.rb', line 33

def clear_containers
	@container_list.each do |container|
		container.clear
	end
end

#create_loading_method(name, obj_class, load_method) ⇒ Object 



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# File 'lib/include/DataStorage.rb', line 39

def create_loading_method(name, obj_class, load_method)
	define_singleton_method("load_#{name}") do |index = nil, file_index: nil, filename: nil|
		if !index then
			if !file_index && !filename then
				raise ArgumentError.new("Neither file_index nor filename were given.")
			elsif !file_index then
				index = (SYMBOL_PREFIX + filename).to_sym
			elsif !filename then
				index = file_index.to_sym
			else
				index = file_index.to_sym
			end
		end
		if !@container_list[name][index] then
			if !file_index && !filename then
				raise ArgumentError.new("Neither file_index nor filename were given.")
			elsif !filename then
				filename = @filenames[file_index]
				raise RuntimeError.new("File index #{file_index} has no associated filename.")
			elsif file_index && file_name then
				add_filename(filename, index: file_index)
			end

			obj = obj_class.new
			obj.method(load_method).call(filename)
			self.singleton_method("add_#{name}".to_sym).call(obj, index: index)
		end

		return @container_list[name][index]
	end
end

#define_new_data_type(name, as_hash: true, plural: name.to_s + "s") ⇒ Object 



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# File 'lib/include/DataStorage.rb', line 7

def define_new_data_type(name, as_hash: true, plural: name.to_s + "s")
	@container_list = {} if !@container_list
	@plural_list = {} if !@plural_list

	instance_variable_set("@#{plural}", (as_hash ? {} : []))
	data = instance_variable_get("@#{plural}")
	define_singleton_method("add_#{name}") do |obj, index: nil|
		if !index then
			if as_hash then
				raise("No index for hash data type given") 
			else
				index = data.size
			end
		end
		data[index] = obj
		return index
	end

	define_singleton_method(plural) do
		return data
	end

	@plural_list[name] = plural
	@container_list[name] = instance_variable_get("@#{plural}")
end