1 files changed, 28 insertions, 0 deletions
diff --git a/src/index_range.h b/src/index_range.h
new file mode 100644
index 0000000..1e06e90
--- /dev/null
+++ b/src/index_range.h
@@ -0,0 +1,28 @@
+// Copyright 2022 David Robillard <d@drobilla.net>
+// SPDX-License-Identifier: ISC
+
+#ifndef ZIX_INDEX_RANGE_H
+#define ZIX_INDEX_RANGE_H
+
+#include <stdbool.h>
+#include <stddef.h>
+
+typedef struct {
+  size_t begin; ///< Index to the first character
+  size_t end;   ///< Index one past the last character
+} ZixIndexRange;
+
+static inline ZixIndexRange
+zix_make_range(const size_t begin, const size_t end)
+{
+  const ZixIndexRange result = {begin, end};
+  return result;
+}
+
+static inline bool
+zix_is_empty_range(const ZixIndexRange range)
+{
+  return range.begin == range.end;
+}
+
+#endif // ZIX_INDEX_RANGE_H