Eiffel Compiler

This repository hosts a full-featured compiler for the classic Eiffel 1985 programming language. Developed entirely from scratch, this project serves as both a functional tool and an educational resource, demonstrating the fundamental principles of compiler design. It offers a unique opportunity to explore the inner workings of a language widely. The code generation is made for our abstract machine at Uniovi called MAPL.

🚀 Key Features

- Complete Compiler Pipeline: The project covers all core phases of compilation: lexical analysis, parsing, semantic analysis, and intermediate code generation.

• From-Scratch Implementation: Built with a focus on a deep understanding of compiler theory, without relying on pre-existing compiler frameworks (apart from the grammar tools).

• Educational Resource: The modular and well-documented codebase makes it an ideal reference for students and developers interested in compiler construction.

🛠️ Technology Stack

This compiler was built using a powerful combination of modern and robust tools:

• ANTLR: A renowned parser generator used to define the formal language grammar (Grammar.g4). ANTLR automates the creation of the lexer and parser, ensuring accurate tokenization and syntax checking.

• VGen: A utility used to generate the skeleton classes for the Abstract Syntax Tree (AST). By processing a formal abstract grammar, Vgen provided the essential data structures for the semantic analysis phase.

• Java: The core logic of the compiler, including the visitor pattern for AST traversal, symbol table management, type checking, and code generation, is implemented entirely in Java.

📚 See docs for further details.