Commit fd62033

@@ -0,0 +1,112 @@
+#include "doubly_linked_list.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+Node *initialize(int data) {
+  Node *node = malloc(sizeof(Node));
+  node->data = data;
+  node->next = NULL;
+  node->prev = NULL;
+  return node;
+}
+
+Node *add(Node *head, int data) {
+  Node *tail;
+  Node *tmp = head;
+
+  while(tmp) {
+    if (!tmp->next)
+      break;
+    tmp = tmp->next;
+  }
+  tail = tmp;
+  tail->next = initialize(data);
+  tail->next->prev = tail;
+  return tail->next;
+}
+
+Node *get(Node *from, int index) {
+  if (!from || index < 0) return NULL;
+
+  while(index > 0 && from){
+    from = from->next;
+    index--;
+  }
+  return from;
+}
+
+static int size(Node *head) {
+  int i = 0;
+  for (Node *tmp = head; tmp && tmp != NULL; tmp = tmp->next) i++;
+  return i;
+}
+
+static void assign_next(Node *self, Node *other) {
+  if (self)
+    self->next = other;
+
+  if (other)
+    other->prev = self;
+}
+
+static void assign_prev(Node *self, Node *other) {
+  if (self)
+    self->prev = other;
+
+  if (other)
+    other->next = self;
+}
+
+void swap(Node *x, Node *y) {
+  if (x == y) return;
+  if (!x || !y) return;
+  if (x->prev == y && y->next == x) return swap(y, x);
+
+  Node *xp = x->prev, *xn = x->next, *yp = y->prev, *yn = y->next;
+
+  // if adjacent
+  if (x->next == y && y->prev == x) {
+    assign_next(x, yn);
+    assign_prev(x, y);
+    assign_prev(y, xp);
+  } else {
+    assign_prev(x, yp);
+    assign_next(x, yn);
+    assign_prev(y, xp);
+    assign_next(y, xn);
+  }
+}
+
+Node *reverse(Node *head) {
+  Node *tmp = NULL;
+  Node *current = head;
+
+  while (current != NULL) {
+    tmp = current->prev;
+    current->prev = current->next;
+    current->next = tmp;
+    current = current->prev;
+  }
+  return tmp ? tmp->prev : head;
+}
+
+static void print(Node *node) {
+  if (node->prev && node->next)
+    printf("%d <- %d -> %d\n", node->prev->data, node->data, node->next->data);
+  else if (node->next)
+    printf("nil <- %d -> %d\n", node->data, node->next->data);
+  else
+    printf("%d <- %d -> nil\n", node->prev->data, node->data);
+}
+
+static void inspect(Node *node) {
+  if (!node) return;
+
+  printf("*******\n");
+  while (node) {
+    print(node);
+    node = node->next;
+  }
+  printf("*******\n");
+}
+

@@ -0,0 +1,13 @@
+struct node {
+  int data;
+  struct node *next;
+  struct node *prev;
+};
+
+typedef struct node Node;
+
+Node *initialize(int data);
+Node *add(Node *head, int data);
+Node *get(Node *from, int index);
+void swap(Node *x, Node *y);
+Node *reverse(Node *head);

@@ -1,4 +1,6 @@
 #include <cgreen/cgreen.h>
+#include "doubly_linked_list.h"
+
 /*
 Swap two adjacent elements in a list by adjusting
 only the links (and not the data) using a:
@@ -13,122 +15,6 @@ Describe(DoublyLinkedList);
 BeforeEach(DoublyLinkedList){ }
 AfterEach(DoublyLinkedList){ }
 
-struct node {
-  int data;
-  struct node *next;
-  struct node *prev;
-};
-
-typedef struct node Node;
-
-static void print(Node *node) {
-  if (node->prev && node->next)
-    printf("%d <- %d -> %d\n", node->prev->data, node->data, node->next->data);
-  else if (node->next)
-    printf("nil <- %d -> %d\n", node->data, node->next->data);
-  else
-    printf("%d <- %d -> nil\n", node->prev->data, node->data);
-}
-
-static void inspect(Node *node) {
-  if (!node) return;
-
-  printf("*******\n");
-  while (node) {
-    print(node);
-    node = node->next;
-  }
-  printf("*******\n");
-}
-
-static Node *initialize(int data) {
-  Node *node = malloc(sizeof(Node));
-  node->data = data;
-  node->next = NULL;
-  node->prev = NULL;
-  return node;
-}
-
-static Node *add(Node *head, int data) {
-  Node *tail;
-  Node *tmp = head;
-
-  while(tmp) {
-    if (!tmp->next)
-      break;
-    tmp = tmp->next;
-  }
-  tail = tmp;
-  tail->next = initialize(data);
-  tail->next->prev = tail;
-  return tail->next;
-}
-
-static Node *get(Node *from, int index) {
-  if (!from || index < 0) return NULL;
-
-  while(index > 0 && from){
-    from = from->next;
-    index--;
-  }
-  return from;
-}
-
-static int size(Node *head) {
-  int i = 0;
-  for (Node *tmp = head; tmp && tmp != NULL; tmp = tmp->next) i++;
-  return i;
-}
-
-static void assign_next(Node *self, Node *other) {
-  if (self)
-    self->next = other;
-
-  if (other)
-    other->prev = self;
-}
-
-static void assign_prev(Node *self, Node *other) {
-  if (self)
-    self->prev = other;
-
-  if (other)
-    other->next = self;
-}
-
-static void swap(Node *x, Node *y) {
-  if (x == y) return;
-  if (!x || !y) return;
-  if (x->prev == y && y->next == x) return swap(y, x);
-
-  Node *xp = x->prev, *xn = x->next, *yp = y->prev, *yn = y->next;
-
-  // if adjacent
-  if (x->next == y && y->prev == x) {
-    assign_next(x, yn);
-    assign_prev(x, y);
-    assign_prev(y, xp);
-  } else {
-    assign_prev(x, yp);
-    assign_next(x, yn);
-    assign_prev(y, xp);
-    assign_next(y, xn);
-  }
-}
-
-static Node *reverse(Node *head) {
-  Node *tmp = NULL;
-  Node *current = head;
-
-  while (current != NULL) {
-    tmp = current->prev;
-    current->prev = current->next;
-    current->next = tmp;
-    current = current->prev;
-  }
-  return tmp ? tmp->prev : head;
-}
-
 Ensure(DoublyLinkedList, when_getting_head) {
   Node *head = initialize(100);
   assert_that(get(head, 0), is_equal_to(head));
@@ -586,3 +472,9 @@ TestSuite *swap_doubly_linked_list_tests() {
 
   return suite;
 }
+
+int main(int argc, char **argv) {
+  TestSuite *suite = create_test_suite();
+  add_suite(suite, swap_doubly_linked_list_tests());
+  return run_test_suite(suite, create_text_reporter());
+}

@@ -0,0 +1,15 @@
+#include "doubly_linked_list.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+int next(void) {
+  return rand() % 100;
+}
+
+int main(int argc, char *argv[])
+{
+  printf("=== COMP-272 - Assignment 1 - Question 2b ===\n");
+  Node *head = initialize(next());
+
+  return 0;
+}

@@ -0,0 +1,37 @@
+#!/usr/bin/make -f
+SHELL=/bin/sh
+
+CC=clang
+TEST_LIBS = -lcgreen
+
+BUILDDIR := build
+OBJS := $(addprefix $(BUILDDIR)/,doubly_linked_list.o)
+TEST_OBJS := $(addprefix $(BUILDDIR)/,doubly_linked_list_test.o)
+
+$(BUILDDIR)/%.o : %.c
+	$(COMPILE.c) $(OUTPUT_OPTION) $<
+
+.PHONY: all
+all: $(OBJS) $(BUILDDIR)/main.o
+	$(CC) $(OBJS) $(BUILDDIR)/main.o -o $(BUILDDIR)/program
+
+.PHONY: test
+test: $(OBJS) $(TEST_OBJS)
+	$(CC) $(OBJS) $(TEST_OBJS) $(TEST_LIBS) -o $(BUILDDIR)/test
+
+$(OBJS): | $(BUILDDIR)
+
+$(TEST_OBJS): | $(BUILDDIR)
+
+$(BUILDDIR):
+	mkdir $(BUILDDIR)
+
+.PHONY: clean
+clean:
+	rm -fr build
+
+run : all
+	./build/program
+
+run_test : test
+	cgreen-runner -c -v $(BUILDDIR)/test