--- a/src/ring.h Tue Jun 28 19:31:55 2022 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,108 +0,0 @@
-/*
- * LDForge: LDraw parts authoring CAD
- * Copyright (C) 2013 - 2020 Teemu Piippo
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-namespace iter
-{
- namespace _imp
- {
- template<typename T, typename Tint>
- class RingAdapter;
- }
-
- template<typename T>
- _imp::RingAdapter<T, int> ring(T&& collection);
-
- template<typename T, typename Tint>
- _imp::RingAdapter<T, Tint> ring(T&& collection, Tint count);
-}
-
-/*
- * Implements a ring adapter over T. This class corrects indices given to the element-operator so that they're within
- * bounds. The maximum amount can be specified manually.
- *
- * Example:
- *
- * int A[] = {10,20,30,40};
- * ring(A)[0] == A[0 % 4] == A[0]
- * ring(A)[5] == A[5 % 4] == A[1]
- * ring(A)[-1] == ring(A)[-1 + 4] == A[3]
- */
-template<typename T, typename Tint>
-class iter::_imp::RingAdapter
-{
-private:
- // The private section must come first because _collection is used in decltype() below.
- T&& collection;
- const Tint count;
-
-public:
- RingAdapter(T&& collection, Tint count) :
- collection {collection},
- count {count} {}
-
- decltype(collection[Tint{}]) operator[](Tint index)
- {
- if (count == 0)
- {
- // Argh! ...let the collection deal with this case.
- return this->collection[index];
- }
- else
- {
- index %= this->count;
-
- // Fix negative modulus...
- if (index < 0)
- index += this->count;
-
- return this->collection[index];
- }
- }
-
- Tint size() const
- {
- return this->count;
- }
-};
-
-/*
- * Convenience function for RingAdapter so that the template parameter does not have to be provided. The ring
- * amount is assumed to be the amount of elements in the collection.
- */
-template<typename T>
-iter::_imp::RingAdapter<T, int> iter::ring(T&& collection)
-{
- return {collection, countof(collection)};
-}
-
-/*
- * Version of ring() that allows manual specification of the count.
- */
-template<typename T, typename Tint>
-iter::_imp::RingAdapter<T, Tint> iter::ring(T&& collection, Tint count)
-{
- return {collection, count};
-}
-
-template<typename T, typename Tint>
-int countof(const iter::_imp::RingAdapter<T, Tint>& ring)
-{
- return ring.size();
-}