Add EnumIndexedVector.

1 files changed, 92 insertions, 0 deletions

diff --git a/src/lib/enum_indexed_vector.h b/src/lib/enum_indexed_vector.h
new file mode 100644
index 000000000..5032a0bf2
--- /dev/null
+++ b/src/lib/enum_indexed_vector.h
@@ -0,0 +1,92 @@
+/*
+    Copyright (C) 2022 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic 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 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic 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 DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+
+#ifndef DCPOMATIC_ENUM_INDEXED_VECTOR_H
+#define DCPOMATIC_ENUM_INDEXED_VECTOR_H
+
+
+#include <vector>
+
+
+template <typename Type, typename Enum>
+class EnumIndexedVector
+{
+public:
+	EnumIndexedVector()
+		: _data(static_cast<int>(Enum::COUNT))
+	{}
+
+	EnumIndexedVector(EnumIndexedVector const& other)
+		: _data(other._data)
+	{}
+
+	EnumIndexedVector& operator=(EnumIndexedVector const& other) {
+		if (this == &other) {
+			return *this;
+		}
+
+		_data = other._data;
+		return *this;
+	}
+
+	typename std::vector<Type>::reference operator[](int index) {
+		return _data[index];
+	}
+
+	typename std::vector<Type>::const_reference operator[](int index) const {
+		return _data[index];
+	}
+
+	typename std::vector<Type>::reference operator[](Enum index) {
+		return _data[static_cast<int>(index)];
+	}
+
+	typename std::vector<Type>::const_reference operator[](Enum index) const {
+		return _data[static_cast<int>(index)];
+	}
+
+	void clear() {
+		std::fill(_data.begin(), _data.end(), {});
+	}
+
+	typename std::vector<Type>::const_iterator begin() const {
+		return _data.begin();
+	}
+
+	typename std::vector<Type>::const_iterator end() const {
+		return _data.end();
+	}
+
+	typename std::vector<Type>::iterator begin() {
+		return _data.begin();
+	}
+
+	typename std::vector<Type>::iterator end() {
+		return _data.end();
+	}
+
+private:
+	std::vector<Type> _data;
+};
+
+
+#endif
+