MOFFET Language

Moffet is an experimental LLVM-based language frontend built to explore compiler design, program analysis, and LLVM IR generation.
The project focuses on understanding how source code is transformed through lexical analysis, parsing, AST construction, and lowered into LLVM Intermediate Representation (IR).

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Overview

Moffet currently implements:

• A lexer for tokenizing input
• A recursive-descent parser
• An AST (Abstract Syntax Tree) representation
• Operator precedence parsing
• Basic LLVM IR code generation using IRBuilder

The design is inspired by LLVM’s Kaleidoscope tutorial, with custom modifications and extensions.

Implemented Features

• Lexical analysis for identifiers, numbers, operators, and keywords
• Parsing of:
  • Numeric expressions
  • Variable references
  • Binary operations
  • Function prototypes and calls
• AST-based semantic representation
• Basic code generation for supported expressions
• Interactive REPL-style execution loop

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Current Status & Limitations

This implementation is experimental and not production-ready:

• Error handling is minimal
• Only a limited subset of language features is supported
• Some components are still under refinement

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Motivation

This project was built to:

• Understand compiler frontend architecture
• Gain familiarity with LLVM internals and IR

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Run Locally

Clone the project:

git clone https://github.com/WRenchJr42/moffet_lang.git

Navigate to the project directory:

cd moffet_lang

Run the interpreter:

./moffet.kai