add list and static library builder

1 files changed, 98 insertions, 0 deletions

diff --git a/lib/list/list.c b/lib/list/list.c
new file mode 100644
index 0000000..753fdb1
--- /dev/null
+++ b/lib/list/list.c
@@ -0,0 +1,98 @@
+#include "list.h"
+#include "../malloc/malloc.h"
+
+
+list_node_t *__new_list_node(void *value);
+
+
+list_t *new_list()
+{
+	list_t *list = malloc(sizeof(list_t));
+	list->first = 0;
+	list->last  = 0;
+	list->size  = 0;
+	return list;
+}
+
+
+list_t *from_array(void **array, u64 size)
+{
+	int i;
+	list_t *list = new_list();
+	list->size = size;
+
+	for (i = 0; i < size; ++i)
+		list_append(list, array[i]);
+	
+	return list;
+}
+
+
+void list_append(list_t *list, void *value)
+{
+	list_node_t *node = __new_list_node(value);
+
+	if (list->last == 0) {
+		list->first = node;
+		list->last  = list->first;
+	} else {
+		list->last->next = node;
+		node->previous = list->last;
+		list->last = node;
+	}
+
+	++list->size;
+}
+
+
+void list_prepend(list_t *list, void *value)
+{
+	list_node_t *node = __new_list_node(value);
+
+	if (list->last == 0) {
+		list->first = node;
+		list->last  = list->first;
+	} else {
+		list->first->previous = node;
+		node->next = list->first;
+		list->first = node;
+	}
+
+	++list->size;
+}
+
+
+void *pop_first(list_t *list)
+{
+	void *value = list->first->value;
+	list_node_t *node = list->first;
+
+	list->first = node->next;
+	free(node);
+
+	--list->size;
+	return value;
+}
+
+
+void *pop_last(list_t *list)
+{
+	void *value = list->last->value;
+	list_node_t *node = list->last;
+
+	list->last = node->previous;
+	free(node);
+
+	--list->size;
+	return value;
+}
+
+
+list_node_t *__new_list_node(void *value)
+{
+	list_node_t *node = malloc(sizeof(list_node_t));
+	node->value    = value;
+	node->next     = 0;
+	node->previous = 0;
+	return node;
+}