CPSC 421-020 Object-Oriented Programming Spring 2026

Week 5 Class 9 Thu Feb 12 Posted: Feb 12

After Class

• Project 2 Due date changes.
• Project 1
  • All issues and scores for v1d and v1e are posted

  Across all students, there were over 600 functions created and the number of issues for v1d was over 300. And many of the v1d issues referred to multiple function names. I use scripts to detect certain things, but I have to manually examine them. Whether generated by a script and manually examined, or done entire manually, mistakes can happen. If there is a question, then ask.

• Exercise 31: TRACE

  TRACE Session Record of the terminal session streamed live in class.

Announcements

• President's Day Observance No class or Office Hours on Tuesday, Feb 17
• Exercise 26: srcFacts Concerns Quiz Answers
• Project 1
  • Every function should have single purpose. Do not make a function try to be an Accessor::predicate and Mutator::command. Use separate functions for each.
  • If your xml_parser functions refer to srcML, srcFacts, or srcfacts concerns, then they violate the rule of none of these concerns in xml_parser. Specifically, if they contain expression counts or use srcML tags, such as "expr", then they violate a primary design rule for this project. Remove them immediately.
• Project 2 Available via this link or the Archive. Not on the main page until Project 1 expires.
• Guide: asciinema

Agenda

• Notes: Generalizing Functions
• Exercise 29: Generalizing Functions Crossword
• Notes: Naming Motivation only for now
• Notes: Method Naming Standards We will follow these naming standards in this course.
• Exercise 30: Method Naming Standards Crossword

• Exercise 31: TRACE

  The BUILD.md file contains instructions on turning TRACE on and off

  Demonstrate the running of your program with TRACE on for a:

  • Line comment
  • Short block comment
  • Doxygen block comment

  You will have to create the srcML for each of these code examples. Use the srcML Playground. Keep the examples as short as possible (i.e., only include a comment). Download these files and have them ready before you start the screencast. Also before the screencast, build with the TRACE option on.

  The form to submit the asciinema link is in the title of this exercise.

  To make the output cleaner, redirect the generate table to a file ./srcfacts < FILENAME > report.md

• Notes: Event States
• Notes: Grouping Functions
• Exercise 32: Grouping Functions Crossword Due by 3:30 pm on Tuesday, Feb 17
• Notes: Sequence Diagrams

• Exercise 33: Sequence Diagram Due by 3:30 pm on Tuesday, Feb 17

  Create a sequence diagram at SequenceDiagram.org for the diagram on the right, which is for parsing a start tag with an attribute.

  Start with the SVG file with the GitHub Classroom Repository link at Brightspace, and commit your changes to that repository.

  Your final result should look exactly like the image shown here.

  Make sure to save as a SVG Image File (vector image with embedded source text)