Add rudimentary support for jump list (CTRL+{O,I})

1 files changed, 21 insertions, 0 deletions

diff --git a/ring-buffer.h b/ring-buffer.h
new file mode 100644
index 0000000..cfd70e0
--- /dev/null
+++ b/ring-buffer.h
@@ -0,0 +1,21 @@
+#ifndef RING_BUFFER_H
+#define RING_BUFFER_H
+
+#include <stdbool.h>
+#include <stddef.h>
+
+/*
+ * Circular buffer with functions for accessing elements in order.
+ * One slot always remains unused to distinguish between the empty/full case.
+ */
+
+typedef struct RingBuffer RingBuffer;
+
+RingBuffer *ringbuf_alloc(size_t size);
+void ringbuf_free(RingBuffer*);
+void ringbuf_add(RingBuffer*, const void *value);
+const void *ringbuf_prev(RingBuffer*);
+const void *ringbuf_next(RingBuffer*);
+void ringbuf_invalidate(RingBuffer*);
+
+#endif