VirtuC

A compiler for a subset of the C programming language, implemented in Rust. VirtuC supports lexical analysis, parsing, semantic analysis, code generation to LLVM IR, and execution via a custom virtual machine.

Features

• Lexer: Tokenizes C subset source code using the logos crate.
• Parser: Parses tokens into an Abstract Syntax Tree (AST) using the nom parser combinator library.
• Semantic Analysis: Performs type checking, symbol resolution, and validation.
• Code Generation: Translates AST to LLVM Intermediate Representation (IR) using the inkwell crate.
• Virtual Machine: Executes compiled bytecode with a stack-based architecture.
• CLI: Command-line interface for compiling source files to executables.

Supported C Subset

• Primitive types: int (64-bit), float (64-bit)
• Variables and assignments
• Arithmetic and comparison operators
• Control flow: if-else, for loops
• Functions with parameters and return values
• Function calls

Building

Ensure you have Rust and LLVM installed. Then:

cargo build --release

Usage

Compile a C subset source file to an executable:

cargo run -- compile source.c -o output

Run the executable:

./output