Languages: added Rust [WIP]

[Defman21]

• Syntax Highlighting
• Linting
• Various integrations

CodeIntel is something I really want to implement, but the API is closed atm.

[Defman21]

Linting:

• cargo check --message-format json --color never, capture STDOUT (STDERR does not contain any useful information); only run when a project is opened; trigger: on save; cwd: project
• rustc --error-format=json <- OR file>, capture STDERR; only run when no project is opened; trigger: as you type; cwd: file

Integrations:

• cargo: common commands (cargo --help)
• rustup: common commands (rustup --help)

[Defman21]

@Naatan since cargo lints the whole project (and you can't lint a file outside of the project because of use declarations), I think I should note in the prefs that it might be slow and it requires the file to be saved?

[Naatan]

@Defman21 I would go so far as to say it linting the entire project is a deal breaker. It's unlikely we'd merge it into Komodo if that's the case.

Linting happens continuously as you type, so having it spin off a super expensive lint each time would be problematic to say the least.

Regardless, thanks for the contribution! :) So you know UDL now? ;)

[Defman21]

Okay, I'll delete the entire linting then.

And yes, I know UDL now :)

[Defman21]

Actually, after thinking a bit more, I think I'll tweak the linting so it will ignore some of the errors related to import, binary/library based things such as missing fn main() declaration, etc.

[Defman21]

Hmm, Rust language server supports linting, so I might use it instead of compiling files.