1 files changed, 7 insertions, 0 deletions
diff --git a/src/exdata.h b/src/exdata.h
new file mode 100644
index 0000000..a9c28de
--- /dev/null
+++ b/src/exdata.h
@@ -0,0 +1,7 @@
+#pragma once
+
+typedef void * (*exdata_new_cb)(void *arg);
+typedef void (*exdata_free_cb)(void *exdata);
+typedef void (*exdata_merge_cb)(void *dest, void *src);
+typedef void (*exdata_reset_cb)(void *exdata);
+typedef void * (*exdata_copy_cb)(void *exdata);