I2P-Style Pseudocode
Syntax highlighting for I2P-style pseudocode in Visual Studio Code.
Designed for introductory programming students, this extension helps you move from algorithm → flowchart → pseudocode → code with clear, readable structure and consistent formatting.
✨ Features
- Custom syntax highlighting for I2P-style pseudocode
- Readable keyword emphasis (e.g.,
START, IF, WHILE, CALL)
- Clear distinction between:
- Variables (
lower_case)
- Constants (
UPPER_CASE)
- Functions and procedures
- Support for core constructs:
- Input / Output (
GET, PUT)
- Assignment (
LET)
- Conditionals (
IF, ELSEIF, ELSE, ENDIF)
- Loops (
WHILE, FOR, FOREACH)
- Inline and block comments, including tagged comments:
- Placeholders / metavariables using
<...> for instructional scaffolding
- Consistent highlighting across file extensions:
.i2p, .pseudo, .pseudocode, .psc
📸 Example
Syntax highlighting in action:
This example demonstrates:
- Program structure (
START / END)
- Input/output operations
- Control flow (conditionals and loops)
- Comments and placeholders
A full test file is available in the repo: tests\test.i2p)
🌐 Works Everywhere
This extension works in:
Perfect for both local development and browser-based learning environments.
🚀 Getting Started
- Install the extension from the VS Code Marketplace
- Open or create a pseudocode file:
- Start writing using I2P conventions:
START example
GET user_name
LET message = "Hello, " & user_name
PUT message
END example
🎯 Who Is This For?
- Students in introductory programming (CS1 / I2P) courses
- Instructors teaching algorithm design and pseudocode
- Anyone who wants a structured bridge from logic → code
🧠 Why I2P Pseudocode?
I2P-style pseudocode is designed to:
- Reduce cognitive load for beginners
- Reinforce good programming habits early
- Provide a consistent transition to Python and other languages
- Align with structured design practices used in real-world development
🏫 About I2P-Hub
I2P-Hub is a collection of teaching and learning resources created by programming instructors to support student success in introductory courses.
Our goal is to make early programming concepts:
- Clear
- Consistent
- Practical
🔒 Data and Telemetry
This extension does not collect or transmit any data.
You can review the source code or build your own VSIX file from the GitHub repository, if desired.
📜 License
MIT License © 2026 I2P-Hub
Acknowledgements
