How to access Range in VersionReq?

[Shnatsel]

I have a use case where I need to transform a bunch of VersionReqs to ranges, so that a much simpler downstream matcher can then operate on ranges and find if a given version falls within a given range or not.

The problem is that the ranges field on VersionReq is private, along with the Range struct. I'm using a patched copy with those fields made public for prototyping, but I'd like to arrive to a long-term solution that does not require patching.

Should I open a pull request making Range a public struct? Or do you prefer to keep those fields that private, but uplift the entire range conversion logic into semver? Or is there some other approach that I should take?

For context, I just want to know the intervals, and semver's version selection logic around pre-releases would be actively harmful (see #172).

[Shnatsel]

Turns out that making this field public and in any way useful requires exposing a lot of internals. My first thought was to serialize the list of ranges to string and use semver_parser to get it back as public structs, but I can't find a sane way to turn the constraints into strings that can be fed to semver_parser either.

[dtolnay]

This is fixed in 1.0.0. https://docs.rs/semver/1.0.0-rc.1/semver/struct.VersionReq.html