fx.collections: update interface implementations

fx.collections/bitmap.c

@@ -1,6 +1,7 @@
 #include <fx/bitop.h>
 #include <fx/collections/bitmap.h>
 #include <fx/stream.h>
+#include <fx/value.h>
 #include <string.h>
 
 #define BITS_PER_WORD       (8 * sizeof(bitmap_word_t))
@@ -306,10 +307,14 @@ static void bitmap_fini(fx_object *obj, void *priv)
 	struct fx_bitmap_p *map = priv;
 }
 
-static void bitmap_to_string(const fx_object *obj, fx_stream *out)
+static fx_status bitmap_to_string(
+	const fx_value *obj,
+	fx_stream *out,
+	const char *format)
 {
-	const struct fx_bitmap_p *map
-		= fx_object_get_private(obj, FX_TYPE_BITMAP);
+	const struct fx_bitmap_p *map = fx_object_get_private(
+		obj->v_object,
+		FX_TYPE_BITMAP);
 
 	unsigned char *bytes = (unsigned char *)map->map_words;
 	size_t nr_bytes = map->map_nr_words * sizeof(bitmap_word_t);
@@ -339,6 +344,8 @@ static void bitmap_to_string(const fx_object *obj, fx_stream *out)
 
 		fx_stream_write_fmt(out, NULL, "%c", (c & mask) ? '1' : '0');
 	}
+
+	return FX_SUCCESS;
 }
 
 /*** CLASS DEFINITION *********************************************************/