Difference between revisions of "Project A3 20141 - OOP344"

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{{OOP344 Index Extended | 20141}}
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= Introduction =
 
= Introduction =
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Our third assignment will have you construct an integer holding linked list, adapt it into a templated linked list, then create an object editor utilizing the list. You will use the testing package linked [https://scs.senecac.on.ca/~hasan.kamal-al-deen/public_resources/oop344/a3test_mar262014.zip here(Updated March 26 2014)] to test your assignment. The linked lists have automated tests; the rest of the assignment has some automated tests and some visual tests. Please note the filename and test number conveniently provided in the section headers for each required class/function.
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In this assignment, you will construct an integer linked list, adapt it into a templated linked list, then create a '''bonus''' object editor.
 +
 
 +
== Testing ==
 +
Use the testing package linked [https://scs.senecac.on.ca/~hasan.kamal-al-deen/public_resources/oop344/a3test_apr032014.zip here(Updated April 3 2014)] to test your assignment. Please read the notes/comments in a3test.cpp.
 +
 
 +
== Expectations ==
 +
Test numbers are provided at the end of each class spec heading, as are file names.
  
−
; SANITY NOTE
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[[Sanity_20141_-_OOP344 | Please read this note on code SANITY]].
−
: You will be writing a number of classes and functions. Please remember to '''sanitize''' your code as you go along.
 
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; What is code sanity?
 
−
: The idea behind code sanity is to keep the code clean and the logic strong '''at all times'''. This has 2 main advantages.
 
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# If your code is logically correct '''at all times''' then you can be sure that if there is a problem, it has been caused by the latest set of alterations.
 
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# It makes debugging '''much much easier''' both for yourself and for '''anyone helping you'''
 
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; So how do I keep my code sane?
 
−
: By following these simple steps:
 
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# Keep the code nicely '''formatted''' at '''all times'''. This makes it easy to see the logical structure of your program at a glance and to follow the logic of it. Experienced programmers do '''NOT''' look for lines of code, they look for '''blocks''' denoted by '''indents'''. Train yourself to do the same.<br/>'''NOTE:''' If you are using an editor or environment that makes this hard for you, '''start by getting a better environment!'''<br/>Windows and visual studio are an excellent combination and provided for free by Seneca. On Linux, your options are netbeans and sublime. The debugging experience is simpler on Windows for our assignments however.<br/>Also note, on visual studio, you can have the editor '''automatically''' format your code nicely by pressing the following combinations in sequence:<br/>'''CTRL-K, CTRL-D'''
 
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# Do not begin writing the next feature before the '''last feature''' is working! This is of '''paramount importance'''! By ensuring that your code is working ('''use the tests, specs, and your common sense!'''), you can save versions of your assignment at specific points in time and '''know''' that if a problem arises, '''it must be caused by your latest set of changes!'''
 
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# Use a '''consistent''' naming convention for all member variables and '''another''' convention for local variables.<br/>This makes it easy for you and for '''anyone helping you''' to tell at a glance (ie '''WITHOUT''' looking at your header) which variables are local, member, etc...<br/>Too often I see conventions either not used, not used consistently, or '''mixed'''. Of the three cases, '''the third is the worst'''.<br/>Aim to '''ALWAYS''' use consistent naming conventions, whatever they may be.<br/>An easy set of conventions is as follows:
 
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#; Private/Protected Member Variable/Function: _underscoreCamelCase
 
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#; Public Member Variable/Function: regularCamelCase
 
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#; Local Variable/Function Parameter/Global Function: regularCamelCase
 
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#; Public #Define (ie should be used by external code): SCREAMING_CAPS
 
−
#; Private #Define (ie should only be internally used): _UNDERSCORE_SCREAMING_CAPS
 
  
 
When you are finished the assignment, you will have created the following files:
 
When you are finished the assignment, you will have created the following files:
Line 23: Line 16:
 
* intlist.cpp
 
* intlist.cpp
 
* list.h
 
* list.h
 +
 +
* Will update with part 3 soon.
  
 
== Part 1: Integer Linked List ==
 
== Part 1: Integer Linked List ==
 
Build the classes IntList and IntListNode. Place the headers in intlist.h and the implementation in intlist.cpp. These classes form an integer linked list.
 
Build the classes IntList and IntListNode. Place the headers in intlist.h and the implementation in intlist.cpp. These classes form an integer linked list.
  
−
=== Class: IntListNode, Files: [intlist.h, intlist.cpp], Test: 0 ===
+
=== Class: IntListNode, Files: [intlist.h, intlist.cpp], Test Number: 0 ===
 
Integer linked list node. Node is considered last in the list if its next pointer is NULL. Note the public and protected sections below. You may need to make IntList a friend of this class.
 
Integer linked list node. Node is considered last in the list if its next pointer is NULL. Note the public and protected sections below. You may need to make IntList a friend of this class.
  
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* An integer member to hold the node's value.
 
* An integer member to hold the node's value.
 
* A pointer to the next node in the list.
 
* A pointer to the next node in the list.
−
 
−
==== Protected Functions ====
 
−
; next: Setter for this node's next member. Accepts a pointer to a node. Does not return anything.
 
  
 
==== Public Functions ====
 
==== Public Functions ====
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:* Integer to initialize node's value. Defaults to a default constructed int.
 
:* Integer to initialize node's value. Defaults to a default constructed int.
 
:* Pointer to next node in list. Defaults to NULL.
 
:* Pointer to next node in list. Defaults to NULL.
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; Copy Constructor: Initializes internal value as a copy of the source's internal value. Sets this object's next to NULL.
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; Copy Constructor: Initializes internal value as a copy of the source's internal value. Sets this object's next pointer to NULL.
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; Standard Assignment Operator: Assigns source's internal value to the current object's internal value. Sets this object's next to NULL. Does not alter the object in the case of self-assignment. Returns a reference to the current object.
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; Standard Assignment Operator: Assigns source's internal value to the current object's internal value. Sets this object's next pointer to NULL. Does not alter the object in the case of self-assignment. Returns a reference to the current object.
  
 
; val: Val getter. Const function. Does not accept parameters. Returns internal value.
 
; val: Val getter. Const function. Does not accept parameters. Returns internal value.
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; next: Next getter. Const function. Does not accept parameters. Returns pointer to the next node.
 
; next: Next getter. Const function. Does not accept parameters. Returns pointer to the next node.
  
−
=== Class: IntList, Files [intlist.h, intlist.cpp], Test: 0 ===
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=== Class: IntList, Files [intlist.h, intlist.cpp], Test Number: 0 ===
 
Integer linked list. Uses IntListNode as a node class.
 
Integer linked list. Uses IntListNode as a node class.
  
−
==== Recommended members ====
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==== Recommended Members ====
 
* Pointer to head node in list
 
* Pointer to head node in list
 
* Current size (number of nodes) of list
 
* Current size (number of nodes) of list
  
 
==== Public Functions ====
 
==== Public Functions ====
 +
; Constructor: Does not accept parameters. Initializes list to safe empty state.
 +
 
; size: Size getter. Const function. Does not receive parameters. Should return number of nodes in list.
 
; size: Size getter. Const function. Does not receive parameters. Should return number of nodes in list.
 
; head: Head getter. Const function. Returns pointer to head node in list.
 
; head: Head getter. Const function. Returns pointer to head node in list.
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; clear: Removes all nodes in the list. Has no effect if the list is empty. Does not accept parameters. Does not return anything.
 
; clear: Removes all nodes in the list. Has no effect if the list is empty. Does not accept parameters. Does not return anything.
  
 +
; Destructor: Should ensure that all memory allocated by the list has been deallocated. You are encouraged to use the functions available to you.
  
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; Constructor: Does not accept parameters. Initializes list to safe empty state.
 
 
; Standard Assignment Operator: Clears this list of all nodes. Then, refills list with the same number of nodes as in the source list. Value of each new node should equal the value of corresponding node in source list. Should not alter object in the case of self-assignment. Should return a reference to the current object.
 
; Standard Assignment Operator: Clears this list of all nodes. Then, refills list with the same number of nodes as in the source list. Value of each new node should equal the value of corresponding node in source list. Should not alter object in the case of self-assignment. Should return a reference to the current object.
 
; Copy Constructor: Initializes object to safe state then copies source list into current list. Similar to assignment operator.
 
; Copy Constructor: Initializes object to safe state then copies source list into current list. Similar to assignment operator.
  
 
== Part 2: Templated Linked List ==
 
== Part 2: Templated Linked List ==
−
'''NOTE: Do NOT start working on this part before finishing part 1 and making sure that it passes all tests!'''
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'''NOTE:''' Finish part 1 before working on this part.
 +
 
 +
Build the templated linked list node class ListNode<T> and the templated linked list class List<T> in the file list.h.
  
−
For this part, you will build the classes '''List<T>''' and '''ListNode''' in the file '''list.h'''. These two classes compose a templated linked list. A lot of the code for these classes is '''very similar''' to the code you already wrote for the IntListNode and IntList classes, except that the code is now templated. Therefore, it is suggested that you '''copy''' the code that you wrote for those classes and '''paste''' it into the list.h file, updating the references to IntListNode and IntList and generally adjusting the code as required.
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These two classes are almost identical to IntListNode and IntList, except that they are templated.
  
−
'''NOTE:''' The function signature for ListNode::ListNode, ListNode::val setter, and List::push are different from their IntListNode and IntList counterparts!
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In the specs below, note the sections that are marked <big><u><i>Important</i></u></big>. Those sections will have more than just a template parameter change from the int version of the list.
  
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=== Class: ListNode<T>, Files: [list.h], Test: 1 ===
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=== Class: ListNode<T>, Files: [list.h], Test Number: 1 ===
 
Templated ListNode class. Similar to IntListNode but templated to hold any type.
 
Templated ListNode class. Similar to IntListNode but templated to hold any type.
  
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It is expected that '''class declaration''' and '''definition''' lie in '''list.h'''.
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The syntax for prototyping a templated class is:
 +
  template <typename T> SomeClass;
  
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In most implementations, you will need to make the class '''List<T>''' a friend of this class to access the protected '''next setter'''.
+
==== Recommended Members ====
 +
* Template type member to hold the value.
 +
* Pointer to next node in list.
  
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'''TIP:''' The syntax for prototyping a templated class is:
+
==== Public Functions ====
−
  template <typename T> SomeClass;
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These functions are similar to their IntListNode counterparts.
  
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The exact specs follow and assume that the template:
+
; Constructor: Accepts two arguments.
 +
:* <big><u><i>Important</i></u></big> const T reference to initialize node's value. Defaults to a default constructed T.
 +
:* Pointer to next node in the list. Defaults to NULL.
 +
; Copy Constructor: Initializes internal value as a copy of the source's internal value. Sets this object's next pointer to NULL.
 +
; Standard Assignment Operator: Assigns source's internal value to the current object's internal value. Sets this object's next pointer to NULL. Does not alter the object in the case of self-assignment. Returns a reference to the current object.
  
−
==== Internal Variables ====
+
; val: Val getter. Const function. Does not accept parameters. Returns internal value.
−
; T _val: Held value.
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; val: Val setter. <big><u><i>Important</i></u></big> receives a const T reference. Sets internal value to received reference. Does not return anything.
−
; ListNode<T>* _next: Pointer to the next node in the list.
 
  
−
==== Protected Functions ====
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; next: Next getter. Const function. Does not accept parameters. Returns pointer to next node.
−
; void next(ListNode<T>*): Next setter. Sets the internally held next pointer to the incoming pointer.
 
  
−
==== Public Functions ====
+
=== Class: List<T>, Files [list.h], Test Number: 1 ===
−
; ListNode(const T& v = T(), ListNode<T>* n = NULL): Constructor. Note the default values. Initializes the internally held value to v and the next pointer to n.
+
A templated linked list class. Similar to IntList. Uses ListNode<T> as a node class.
−
; ListNode(const ListNode<T>& src): Copy constructor. Should initialize the internally held value to src's internally held value. Should initialize '''next''' to '''NULL'''.
 
−
; ListNode& operator=(const ListNode<T>& src): Assignment operator. Should set the internally held value to src's internally held value. Should set '''next''' to '''NULL'''. Should do '''NOTHING''' in the case of '''self-assignment''' (ie ListNode<T> x; x = x;). Returns a reference to the current object.
 
−
; ~ListNode(): Destructor. As this node does not allocate any memory, this function can remain empty.
 
  
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; T val() const: Val getter. Returns the value internally held.
+
==== Recommended Members ====
−
; void val(const T&): Val setter. Sets the internally held value to the incoming value.
+
* Pointer to head node in list
 +
* Current size (number of nodes) of list
  
−
; ListNode<T>* next() const: Next getter. Returns the internally held next pointer.
+
==== Public Functions ====
 +
; Constructor: Does not accept parameters. Initializes list to safe empty state.
  
−
=== Class: List<T>, Files [list.h], Test: 1 ===
+
; size: Size getter. Const function. Does not receive parameters. Should return number of nodes in list.
−
A templated linked list class. Similar to IntList. Similarly to IntList, because it needs to be able to set the next pointer on ListNode<T> objects, this class '''may''' need to be a friend of the ListNode<T> class (this depends on how you implement these classes).
+
; head: Head getter. Const function. Returns pointer to head node in list.
  
−
The exact specs follow:
+
; push: Adds a new node to the '''end of the list'''. I'll say that again, '''END OF THE LIST'''. <big><u><i>Important</i></u></big> receives a const T reference. The new node's value should be set to the received reference.
 +
; pop: Destroys the '''last node in the list'''. I'll say that again, '''LAST NODE IN THE LIST'''. Does not receive any arguments. Does not return anything.
 +
; clear: Removes all nodes in the list. Has no effect if the list is empty. Does not accept parameters. Does not return anything.
  
−
==== Internal Variables ====
+
; Destructor: Should ensure that all memory allocated by the list has been deallocated. You are encouraged to use the functions available to you.
−
; ListNode<T>* _head: The head of the list. Should be NULL when the list is empty.
 
−
; int _size: The number of elements currently in the list.
 
  
−
==== Public Functions ====
+
; Standard Assignment Operator: Clears this list of all nodes. Then, refills list with the same number of nodes as in the source list. Value of each new node should equal the value of corresponding node in source list. Should not alter object in the case of self-assignment. Should return a reference to the current object.
−
; List(): Default constructor. Should set size to 0 and head to NULL.
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; Copy Constructor: Initializes object to safe state then copies source list into current list. Similar to assignment operator.
−
; List(const List<T>& src): Copy constructor. Should copy the list of nodes managed by '''src'''. This means that an entirely new list of nodes must be created, one node for each node managed by '''src''', and the value held by each of those nodes must '''equal''' the value held by the corresponding node managed by '''src'''. When this constructor is finished, the size of the current list should be the same as the size of src.<br/><br/>'''TIP:''' After initializing the current object to a '''safe and empty state''', don't forget that you may call '''any member function''' that the current list has!
 
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; List<T>& operator=(const List<T>& src): Assignment operator. Should behave similarly to the copy constructor. '''ADDITIONALLY:''' Should do '''NOTHING''' in the case of '''self-assignment''' (ie List<int> x; x = x;). If taking action, should clear the list of all nodes before creating new ones ('''make sure that you do NOT leak memory!'''). Should return a reference to the current object.
 
  
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; int size() const: Size getter. Returns the current value of the size member.
+
== Submission ==
−
; ListNode<T>* head() const: Head getter. Returns the current value of the head pointer.
+
Please only submit '''ONCE YOUR CODE SUCCESSFULLY PASSES ALL TESTS!''' This includes the '''COMMON SENSE TEST''' which is the test that you perform '''yourself''' on your own code to ensure that it matches with what is required in the spec.
−
; void push(const T& v): Adds a new node to the '''end of the list''' holding the value v. Should increment size.
 
−
; void pop(): Destroys the last node in the list. Should do '''NOTHING''' if the list is currently empty. Should decrement size if a node was destroyed. '''NOTE:''' If a node was destroyed, make sure that '''ANY POINTERS POINTING TO IT''', that your code has access to, are set to NULL.
 
−
; void clear(): Destroys all nodes in the list. Has no effect if the list is currently empty. When this function is finished, head should point to NULL and size should be 0.
 
  
−
== Submission ==
+
; Section A, C: Please submit via blackboard.
−
Please only submit '''ONCE YOUR CODE SUCCESSFULLY PASSES ALL TESTS!''' This includes the '''COMMON SENSE TEST''' which is the test that you perform '''yourself''' on your own code to ensure that it matches with what is required '''in the spec'''. Please see your instructor's specific instructions on how to submit.
+
; Section B: Please see your instructor's specific instructions on how to submit.

Latest revision as of 09:22, 3 April 2014


OOP344 | Weekly Schedule | Student List | Teams | Project | A1 | A2 | A3 | Student Resources

Introduction

In this assignment, you will construct an integer linked list, adapt it into a templated linked list, then create a bonus object editor.

Testing

Use the testing package linked here(Updated April 3 2014) to test your assignment. Please read the notes/comments in a3test.cpp.

Expectations

Test numbers are provided at the end of each class spec heading, as are file names.

Please read this note on code SANITY.

When you are finished the assignment, you will have created the following files:

  • intlist.h
  • intlist.cpp
  • list.h
  • Will update with part 3 soon.

Part 1: Integer Linked List

Build the classes IntList and IntListNode. Place the headers in intlist.h and the implementation in intlist.cpp. These classes form an integer linked list.

Class: IntListNode, Files: [intlist.h, intlist.cpp], Test Number: 0

Integer linked list node. Node is considered last in the list if its next pointer is NULL. Note the public and protected sections below. You may need to make IntList a friend of this class.

Recommended Members

  • An integer member to hold the node's value.
  • A pointer to the next node in the list.

Public Functions

Constructor
Accepts two arguments:
  • Integer to initialize node's value. Defaults to a default constructed int.
  • Pointer to next node in list. Defaults to NULL.
Copy Constructor
Initializes internal value as a copy of the source's internal value. Sets this object's next pointer to NULL.
Standard Assignment Operator
Assigns source's internal value to the current object's internal value. Sets this object's next pointer to NULL. Does not alter the object in the case of self-assignment. Returns a reference to the current object.
val
Val getter. Const function. Does not accept parameters. Returns internal value.
val
Val setter. Receives an int. Sets internal value to received int. Does not return anything.
next
Next getter. Const function. Does not accept parameters. Returns pointer to the next node.

Class: IntList, Files [intlist.h, intlist.cpp], Test Number: 0

Integer linked list. Uses IntListNode as a node class.

Recommended Members

  • Pointer to head node in list
  • Current size (number of nodes) of list

Public Functions

Constructor
Does not accept parameters. Initializes list to safe empty state.
size
Size getter. Const function. Does not receive parameters. Should return number of nodes in list.
head
Head getter. Const function. Returns pointer to head node in list.
push
Adds a new node to the end of the list. I'll say that again, END OF THE LIST. Receives an int parameter. The new node's value should be set to the received int.
pop
Destroys the last node in the list. I'll say that again, LAST NODE IN THE LIST. Does not receive any arguments. Does not return anything.
clear
Removes all nodes in the list. Has no effect if the list is empty. Does not accept parameters. Does not return anything.
Destructor
Should ensure that all memory allocated by the list has been deallocated. You are encouraged to use the functions available to you.
Standard Assignment Operator
Clears this list of all nodes. Then, refills list with the same number of nodes as in the source list. Value of each new node should equal the value of corresponding node in source list. Should not alter object in the case of self-assignment. Should return a reference to the current object.
Copy Constructor
Initializes object to safe state then copies source list into current list. Similar to assignment operator.

Part 2: Templated Linked List

NOTE: Finish part 1 before working on this part.

Build the templated linked list node class ListNode<T> and the templated linked list class List<T> in the file list.h.

These two classes are almost identical to IntListNode and IntList, except that they are templated.

In the specs below, note the sections that are marked Important. Those sections will have more than just a template parameter change from the int version of the list.

Class: ListNode<T>, Files: [list.h], Test Number: 1

Templated ListNode class. Similar to IntListNode but templated to hold any type.

The syntax for prototyping a templated class is: 

 template <typename T> SomeClass;

Recommended Members

  • Template type member to hold the value.
  • Pointer to next node in list.

Public Functions

These functions are similar to their IntListNode counterparts.

Constructor
Accepts two arguments.
  • Important const T reference to initialize node's value. Defaults to a default constructed T.
  • Pointer to next node in the list. Defaults to NULL.
Copy Constructor
Initializes internal value as a copy of the source's internal value. Sets this object's next pointer to NULL.
Standard Assignment Operator
Assigns source's internal value to the current object's internal value. Sets this object's next pointer to NULL. Does not alter the object in the case of self-assignment. Returns a reference to the current object.
val
Val getter. Const function. Does not accept parameters. Returns internal value.
val
Val setter. Important receives a const T reference. Sets internal value to received reference. Does not return anything.
next
Next getter. Const function. Does not accept parameters. Returns pointer to next node.

Class: List<T>, Files [list.h], Test Number: 1

A templated linked list class. Similar to IntList. Uses ListNode<T> as a node class.

Recommended Members

  • Pointer to head node in list
  • Current size (number of nodes) of list

Public Functions

Constructor
Does not accept parameters. Initializes list to safe empty state.
size
Size getter. Const function. Does not receive parameters. Should return number of nodes in list.
head
Head getter. Const function. Returns pointer to head node in list.
push
Adds a new node to the end of the list. I'll say that again, END OF THE LIST. Important receives a const T reference. The new node's value should be set to the received reference.
pop
Destroys the last node in the list. I'll say that again, LAST NODE IN THE LIST. Does not receive any arguments. Does not return anything.
clear
Removes all nodes in the list. Has no effect if the list is empty. Does not accept parameters. Does not return anything.
Destructor
Should ensure that all memory allocated by the list has been deallocated. You are encouraged to use the functions available to you.
Standard Assignment Operator
Clears this list of all nodes. Then, refills list with the same number of nodes as in the source list. Value of each new node should equal the value of corresponding node in source list. Should not alter object in the case of self-assignment. Should return a reference to the current object.
Copy Constructor
Initializes object to safe state then copies source list into current list. Similar to assignment operator.

Submission

Please only submit ONCE YOUR CODE SUCCESSFULLY PASSES ALL TESTS! This includes the COMMON SENSE TEST which is the test that you perform yourself on your own code to ensure that it matches with what is required in the spec.

Section A, C
Please submit via blackboard.
Section B
Please see your instructor's specific instructions on how to submit.
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