PIT

Run Rust snippet containing multiple packages. Embed Cargo.toml as a comment to avoid special formatting.

• Run snippet in debug mode
• Build packages in snippet in release mode and distribute the artifacts to the directory
• Extract packages in snippet as independent packages

There is a simple cache system, as described below.

Motivation

• rust-analyzer supports single file

  • https://github.com/rust-lang/rust-analyzer/issues/6388
  • https://github.com/rust-lang/rust-analyzer/pull/8955
  • In such a case, it is not an error even if multiple main functions exist
  Snippet on VSCode

  

• A large number of packages in one workspace makes rust-analyzer heavy. rust-analyzer's functionality is limited when opening single file, but it is very lightweight

  • However, I believe it has sufficient functionality to write a snippet because it can complement the standard library
  rust-analyzer completion

  

Usage

```sh $ cargo install rspit

omitted

$ cat ./snippet.rs //# [package] //# name = "rand" //# version = "0.1.0" //# edition = "2021" //# //# [dependencies] //# rand = "*"

use rand::prelude::*;

fn main() { let num: u64 = random(); println!("num: {}", num); }

//# ---

//# [package] //# name = "json" //# version = "0.1.0" //# edition = "2021" //# //# [dependencies] //# serde_json = "*"

use serde_json::{Result, Value};

fn main() -> Result<()> { let json = r#" { "name": "Alice", "age": 42 } "#; let json: Value = serdejson::fromstr(json)?; println!("name: {}, age: {}", json["name"], json["age"]);

Ok(())

}

$ pit run ./snippet.rs

omitted cargo log messages

Run rand package num: 17349477736480811228

omitted cargo log messages

Run json package name: "Alice", age: 42 ```

```sh $ pit --help A command-line tool to run Rust snippet.

Usage: pit [COMMAND]

Commands: check Check all package in file build Build all package in file run Run all package in file release Build all package in file in release mode and copy the artifacts to the target directory init Create a new file list List all packages in the given file add Add an empty package on top in the given file extract Extract the package from file clean Remove everything in the cache directory help Print this message or the help of the given subcommand(s)

Options: -h, --help Print help information -V, --version Print version information ```

Note

• The target directory is cached
• Always build in debug mode when run and build are executed
• If the source files have not been modified at the time of run execution and debug mode artifacts are present, the binary is executed directly without building

Related projects

• rust-script and the projects listed in the README.

License

PIT is released under the MIT License