How to make cargo to save-analysis?

问题

How can I make cargo to save-analysis? I know that I can do this with rustc by calling

rustc -Zsave-snalysis <files...>

But, I couldn't figure out for cargo. And also I like to know how I can read them back to rls_analysis data structures.

I tried cargo rustc -Zsave-analysis, but it doesn't seem to work.

I also tried export RUSTC_SAVE_ANALYSIS=api, no work too.

What I want to do is getting fully qualified path (e.g. ::foo1::foo2::Foo3) to the types notated in source code. If there's other solution, please let me know that too.

回答1:

Just do this before calling cargo build.

export RUSTFLAGS="-Z save-analysis"

---

Update

Saved analysis data won't be loaded with default configuration of AnalysisHost. It's because CargoAnalysisLoader tries to load data from non-default location.

To workaround, just move save-analysis directory to proper location.

target/debug/deps/save-analysis
target/rls/debug/deps/save-analysis

• Replace debug to release according to your build mode.

来源：https://stackoverflow.com/questions/50426488/how-to-make-cargo-to-save-analysis