6 files changed, 88 insertions, 0 deletions
diff --git a/comp/cw/code/tokenizer/ads/ll/Makefile b/comp/cw/code/tokenizer/ads/ll/Makefile
new file mode 100644
index 0000000..aaf0241
--- /dev/null
+++ b/comp/cw/code/tokenizer/ads/ll/Makefile
@@ -0,0 +1,5 @@
+all: ll.c
+	cc ll.c -c -o ll.o
+
+test: all
+	cc ll.o lltest.c -o lltest
diff --git a/comp/cw/code/tokenizer/ads/ll/ll.c b/comp/cw/code/tokenizer/ads/ll/ll.c
new file mode 100644
index 0000000..c45ab0c
--- /dev/null
+++ b/comp/cw/code/tokenizer/ads/ll/ll.c
@@ -0,0 +1,50 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+typedef struct ll_t ll_t;
+
+typedef struct ll_t {
+	void *data;
+	ll_t *next;
+} ll_t;
+
+ll_t *llalloc(){
+	ll_t *output = malloc(sizeof(ll_t));
+	if (output == NULL)
+		return NULL;
+	output->next = NULL;
+	return output;
+}
+
+void llsetdata(ll_t *node, void *data){
+	node->data = malloc(sizeof(data));
+	memcpy(node->data, data, sizeof(data));
+}
+
+void llsetnext(ll_t *node, ll_t *next){
+	if (node->next == NULL)
+		node->next = next;
+	else
+		llsetnext(node->next, next);
+}
+
+void *llgetat(ll_t *head, int index){
+	if (index == 0)
+		return head->data;
+	else {
+		if (head->next != NULL)  {
+			return llgetat(head->next, index - 1);
+		}else {
+			return NULL;
+		}
+	}
+}
+
+void llfreeall(ll_t *head){
+	if (head->next != NULL)
+		llfreeall(head->next);
+	free(head->data);
+	free(head);
+}
+
diff --git a/comp/cw/code/tokenizer/ads/ll/ll.h b/comp/cw/code/tokenizer/ads/ll/ll.h
new file mode 100644
index 0000000..30830b1
--- /dev/null
+++ b/comp/cw/code/tokenizer/ads/ll/ll.h
@@ -0,0 +1,15 @@
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct ll_t ll_t;
+
+typedef struct ll_t {
+	void *data;
+	ll_t *next;
+} ll_t;
+
+ll_t *llalloc();
+void llsetdata(ll_t *node, void *data);
+void llsetnext(ll_t *node, ll_t *next);
+void *llgetat(ll_t *head, int index);
+void llfreeall(ll_t *head);
diff --git a/comp/cw/code/tokenizer/ads/ll/ll.o b/comp/cw/code/tokenizer/ads/ll/ll.o
new file mode 100644
index 0000000..b033278
--- /dev/null
+++ b/comp/cw/code/tokenizer/ads/ll/ll.o
diff --git a/comp/cw/code/tokenizer/ads/ll/lltest b/comp/cw/code/tokenizer/ads/ll/lltest
new file mode 100755
index 0000000..b98c5de
--- /dev/null
+++ b/comp/cw/code/tokenizer/ads/ll/lltest
diff --git a/comp/cw/code/tokenizer/ads/ll/lltest.c b/comp/cw/code/tokenizer/ads/ll/lltest.c
new file mode 100644
index 0000000..8aa6514
--- /dev/null
+++ b/comp/cw/code/tokenizer/ads/ll/lltest.c
@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+#include "ll.h"
+
+int main(){
+	ll_t *head = llalloc();
+	llsetdata(head, "hello");
+
+	for (int i = 0; i < 3; i++){
+		ll_t *node = llalloc();
+		llsetdata(node, "hi");
+		llsetnext(head, node);
+	}
+	for (int i = 0; i < 4; i++)
+		printf("%s\n", (char *)llgetat(head, i)); 
+
+	llfreeall(head);
+}