slava-sh / rust-bundler Goto Github PK

Along with the existing pretty print, it may be useful to support minified code output.

I assume this won't be especially difficult since you're already using syntax trees?

attempting to bundle the following file

fn f() {
    let a = 0;
    for x in 1..=a {}
}

causes a rustfmt failure:

error: expected `{`, found `=`
 --> stdin:1:45
  |
1 | fn spread_at ( ) { let a = 0 ; for x in 1 ..= a { } }
  |                                             ^

thread 'main' panicked at 'rustfmt returned no code', src/libcore/option.rs:1188:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.

Notice, however, that manually running rustfmt on that snippet works.

I'm not sure if it's actually possible, but I think it'd be conveniant to specify the destination file via cargo.toml (with the src being implicitly lib.rs or main.rs already, although it could also be configured). Additionally (if possible), it'd be nice to have some kind of implicit build.rs ship with the bundler crate. (That is, rather than having to manually write or copy one into your project).

It was always one of the key motivations for me of porting my project to rust.

Do you know if it's possible? If you haven't already looked into it, I might fork your project and give it a go over the weekend.

When using lib-files withing same project the new syntax is

use crate::example

instead of

use {{crate_name}}::example

In my codingame template
if trying to create a new lib and use inside math.rs with the crate_name::example it will fail when trying to bundle.

Source code could be read from ~/.cargo/registry/src/github.com-xxx/{crate_name}-{version}.
This would enable easily using libraries such as competitive-programming-rs or easy_io, and benefit from their updates.