1 files changed, 36 insertions, 0 deletions
diff --git a/src/gstore.h b/src/gstore.h
new file mode 100644
index 0000000..0cedd30
--- /dev/null
+++ b/src/gstore.h
@@ -0,0 +1,36 @@
+#ifndef WSAP_TERM_GSTORE_H
+#define WSAP_TERM_GSTORE_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+struct gstore;
+struct term;
+
+/* Create a grapheme store for a terminal. */
+struct gstore *term_gstore_new(struct term *t);
+
+/* Free the grapheme store and its memory. */
+void term_gstore_free(struct gstore *g);
+
+/* Store a cluster of code points. Return its handle. */
+uint32_t term_gstore_intern(struct gstore *g, const uint32_t *cps, int n);
+
+/* Expand a handle to its code points. Return the count. */
+int term_gstore_expand(const struct gstore *g, uint32_t handle, uint32_t *cps, int cap);
+
+/* Mark reachable clusters and free unused ones. */
+void term_gstore_sweep(struct gstore *g, struct term *t);
+
+/* Mark one cluster handle as reachable. */
+void term_gstore_mark(struct gstore *g, uint32_t handle);
+
+/* Return the count of active clusters in the store. */
+uint32_t term_gstore_count(const struct gstore *g);
+
+/* Suppress automatic GC sweeps while temporary cell buffers hold handles. */
+void term_gstore_pin(struct gstore *g);
+void term_gstore_unpin(struct gstore *g);
+
+#endif