Lotus

A statically-typed procedural programming language with an interpreter built in C++.

Lotus is a programming language I developed to explore the principles of statically-typed procedural languages, test-driven development, and software testing. With Lotus, you can write programs using familiar constructs like collections, dictionaries, and control structures, all parsed and interpreted through an interpreter written in C++.

Built With

• C++
• Google Test
• Visual Studio

Prerequisites

Ensure you have the following installed:

• A C++ compiler
• Visual Studio

Installation

1. Clone the repository:

   git clone https://github.com/Multipixels/lotus-lang.git
   

2. Navigate to the project’s src directory:

   cd lotus-lang/src
   

3. Open the lotus-lang.sln file in Visual Studio.
4. Build and run the lotus-interpreter-tests tests.
5. Build the lotus-interpreter project.

Usage

Write Lotus programs in .lotus files and run them through the interpreter. Here’s an example program:

-- Find the sum of the values in a collection
integer sum = 0;
collection<integer> myCollection = [2, 4, 6];

iterate(value : myCollection) {
  sum = sum + myCollection;
}

log(sum);

Run the program:

./lotus-interpreter example.lotus

Features

• Statically-Typed Variables: Includes primitive types like boolean, integer, float, character, and string.
• Collections and Dictionaries: Flexible and easy-to-use data structures.
• Functions: Define reusable blocks of code with return types and parameters.
• Control Structures: Use if-else, while, for, and more.
• Built-in Functions: Log messages, calculate lengths, and more.