Define Macro Implementation

This directory contains the procedural macro implementation for the alias_macros crate.

Structure

• src/lib.rs - Contains the define! procedural macro implementation
• Cargo.toml - Crate configuration with proc-macro dependencies

Implementation Details

The define! macro:

1. Parses input in the format alias = replacement
2. Creates a macro_rules! macro with the alias name
3. Supports two patterns:
   • () - Expands to just the replacement
   • ($($tokens:tt)*) - Expands to replacement followed by the tokens

Dependencies

• syn - For parsing Rust syntax
• quote - For generating Rust code
• proc_macro2 - For token stream manipulation

Building

cargo build

This crate is used as a dependency by the main project and provides the define! macro functionality.