From a3e36c1918e63761dfc4d2221cca3636b98e93aa Mon Sep 17 00:00:00 2001
From: Adam Branes <adam@adam>
Date: Sun, 2 May 2021 17:45:58 +0300
Subject: initial housekeeping done

---
 queue.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 queue.c

(limited to 'queue.c')

diff --git a/queue.c b/queue.c
new file mode 100644
index 0000000..187519a
--- /dev/null
+++ b/queue.c
@@ -0,0 +1,67 @@
+#ifndef GQUEUE_C
+#define GQUEUE_C GQUEUE_C
+#include<queue.h>
+
+
+void Queue_Init(struct Queue *q)
+{
+	q->first=q->last=NULL;
+	q->size=0;
+}
+void Queue_Push(struct Queue *q,void *data)
+{
+	if(q==NULL)return;
+	if(q->first==NULL)
+	{
+		q->first=q->last=malloc(sizeof(struct Queue_Node));	
+
+		q->first->data=data;
+		q->first->prev=NULL;
+
+		++q->size;
+	}else
+	{
+		struct Queue_Node *temp=malloc(sizeof(struct Queue_Node));
+		q->last->prev=temp;
+		temp->data=data;
+
+		q->last=temp;
+		++q->size;
+	}
+
+}
+void* Queue_Pop(struct Queue *q)
+{
+	if(q==NULL)return NULL;
+	if(q->size==0)return NULL;
+
+	void *return_value=q->first->data;
+
+	if(q->size==1)
+	{
+		free(q->last);
+		q->first=q->last=NULL;
+		q->size=0;
+	}else
+	{
+		struct Queue_Node *temp_first=q->first;
+		q->first=q->first->prev;
+		free(temp_first);
+		--q->size;
+	}
+	return return_value;
+}
+void Queue_Destroy(struct Queue *q)
+{
+	
+	struct Queue_Node *temp_first;
+	while(q->first!=NULL)
+	{
+		temp_first=q->first;
+		q->first=q->first->prev;
+		free(temp_first->data);
+		free(temp_first);	
+	}	
+
+}
+#endif 
-- 
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