Implement debugger

The work has started: https://github.com/intellij-rust/intellij-rust/tree/fc2cfb8e0fc76984495a34ae6a83cbb37188c699/debugger

State of the art

The debugger is officially available in CLion since 2018.1. Note, CLion doesn’t support debugging with msvc toolchains, so if you are using Windows, you need:

• install gnu rust toolchain (rustup install stable-gnu)
• setup gnu (Cygwin or MinGW) toolchains in CLion (Preferences > Build, Execution, Deployment > Toolchains).

To debug you just need to:

• Run debug command via gutter icon
• Or create Cargo Command run configurtion and run debugging via debug action

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If you use CLion and the nightly Cargo, you should be able to Debug Cargo configuration:

https://zippy.gfycat.com/AcidicMediocreCoati.webm

A major missing piece is that we don’t pass command line arguments to the debuggee yet (this requires some work on the Cargo side of things first).

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Currently for technical reasons (commit message) debugger is implemented as a separate plugin.

The current build can be download from TeamCity: Download. It may work with CLion 2016.3.2 and intellij-rust 0.1.0.1611.

Note that this is super unstable, debugger can invoke any kind of undefined behavior, including, but not limited to, summoning of nasal daemons. Most importantly, rust debugger may (though in theory it should not) break C++ debugging.

Nonetheless, step into and local variables view more or less work 😃

As you can see on the screenshot, at the moment you unfortunately have to create a separate Cargo debug run configuration type (as opposed to the usual Run cargo command). Also, you only can debug binaries now 😦

[laktak]

Getting a good debugger for Rust would be a great help, especially as the current options are rather limited.

[matklad]

@windoze the plugin totally works with CLion, you don’t need to migrate anything.

I’m planing to start the work on the debugger soon 😃