Homework 07: Initial Import

homework07/list.h

@@ -0,0 +1,41 @@
+/* list.h: Doubly Linked List Library */
+
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+/* Value Union */
+
+typedef union {
+    int64_t number;     // Value as number
+    char   *string;     // Value as string
+} Value;
+
+/* Node Structure */
+
+typedef struct Node Node;
+struct Node {
+    Value   value;      // Value
+    Node   *next;       // Pointer to next Node
+    Node   *prev;       // Pointer to previous Node
+};
+
+Node *	node_create(Value v, Node *next, Node *prev);
+void	node_delete(Node *n, bool release);
+
+/* List Structure */
+
+typedef struct {
+    Node    sentinel;   // Sentinel Node at head and tail of List
+    size_t  size;       // Number of Nodes in List
+} List;
+
+List *	list_create();
+void	list_delete(List *l, bool release);
+
+void	list_append(List *l, Value v);
+Value   list_pop(List *l, size_t index);
+
+/* vim: set sts=4 sw=4 ts=8 expandtab ft=c: */