darray: New DARRAY_POP() macro

1 files changed, 10 insertions, 1 deletions

diff --git a/darray.c b/darray.c
index 846d825..8f796d6 100644
--- a/darray.c
+++ b/darray.c
@@ -1,6 +1,6 @@
 /****************************************************************************
  * bfs                                                                      *
- * Copyright (C) 2019 Tavian Barnes <tavianator@tavianator.com>             *
+ * Copyright (C) 2019-2022 Tavian Barnes <tavianator@tavianator.com>        *
  *                                                                          *
  * Permission to use, copy, modify, and/or distribute this software for any *
  * purpose with or without fee is hereby granted.                           *
@@ -15,6 +15,7 @@
  ****************************************************************************/
 
 #include "darray.h"
+#include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -96,6 +97,14 @@ int darray_check(void *da) {
 	}
 }
 
+size_t darray_pop(void *da) {
+	assert(da);
+
+	struct darray *header = darray_header(da);
+	assert(header->length > 0);
+	return --header->length;
+}
+
 void darray_free(void *da) {
 	if (da) {
 		free(darray_header(da));