Changelog #21

Commit: 90f8378
Release: 2020-04-20

New Features

  • #3958 Initial support for proc-macros

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    To enable it, set the following settings:

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    {
        "rust-analyzer.cargo.loadOutDirsFromCheck": true,
        "rust-analyzer.procMacro.enabled": true
    }
    
  • #3990 switch to Chalk recursive solver. This significantly improves type inference when associated types are involved, for example, with iterators:

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    After
  • #4034 add unresolvedReference semantic tag for names which rust-analyzer fails to resolve. Adding to VS Code config

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    "editor.tokenColorCustomizationsExperimental": {
        "unresolvedReference": "#FF0000"
    }
    

    will give fast feedback about unresolved references, highlighting them in red. No default highlighting is set, as rust-analyzer still has a fair number of false positives.

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  • #3962 don’t assign shortcut for Parent Module command. The original shortcut was kbd:[ctrl+u], but it conflicts with VS Code build-in. It is recommended to assign custom shortcut for rust-analyzer.parentModule action.

  • #3965 implement inline associated type bounds.

  • #3966 add support for bounds on associated types in trait definitions.

  • #4026 omit more parameter hints in the presence of underscores.

  • #3894 implement exhaustiveness checking for record enum variants.

Fixes

  • #3961 fix extraneous comma when merging import.

  • #3969 Add Function assist now uses todo! macro.

  • #3967 handle Self::Type in trait definitions when referring to own associated type.

  • #3948 fix inlay hints config synchronization between client and server.

  • #3979 fix missing match arm false positive for enum with no variants.

  • #4010 fix diagnostics ranges in macros.

  • #4011 fix self-fulfilling completion.

  • #4012 fix panic on ellipsis in pattern.

  • #4021 fix type equality for dyn Trait.

  • #4022 fix panic in syntax highlighting.

  • #4023 fix another crash from wrong binders.

  • #4027 don’t qualify builtins in generated code.

  • #4036 fix name resolution in guard closes and record patterns.

Internal Improvements

  • #3971 add rust-analyzer diagnostics command for batch processing.

  • #3964 nicer Chalk debug logs.

  • #3994, #4016 don’t expose implementation details of SyntaxNodePtr.

  • #3995 separate project discovery from project loading.

  • #4008 add more info about what failed in tidy tests.