cargo-expand.nvim

A Neovim plugin for viewing expanded Rust macros using cargo expand.

Installation

Using lazy.nvim:

{
    'johnsaigle/cargo-expand.nvim',
    config = function()
        require('cargo-expand').setup(}
    end
}

Usage

• Open neovim in the directory containing the appropriate Cargo.toml file.
• Place your cursor on any Rust identifier and run :CargoExpand.

This will:

• Run cargo expand on your project
• Switch to the expanded code in the current buffer
• Add all occurrences to the quickfix list
• Cache the expanded file

Requirements

• Neovim >= 0.8.0
• cargo-expand tool (cargo install cargo-expand)

TODO

The script could be improved by finding the 'closest' Cargo.toml file to the file in the current buffer. This would make it so that neovim doesn't need to be launched from the directory that has the right Cargo.toml file.

• first check cwd
• if Cargo.toml is virtual manfiest, look at options in child directories
• otherwise, look at parent directory