Refactoring C++ with Clang Or how to make C++ more fun than Java - - PowerPoint PPT Presentation

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Refactoring C++ with Clang Or how to make C++ more fun than Java - - PowerPoint PPT Presentation

Feb 03, 2023 783 likes •1.46k views

Refactoring C++ with Clang Or how to make C++ more fun than Java Manuel Klimek - Google We care about... We care about... Performance We care about... Performance Productivity We care about... Performance Productivity

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Refactoring C++ with Clang

Or how to make C++ more fun than Java

Manuel Klimek - Google

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We care about...

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We care about...

  • Performance
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We care about...

  • Performance
  • Productivity
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  • Performance
  • Productivity
  • Fun

We care about...

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  • Performance
  • Productivity
  • Fun

C++ gives us...

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SLIDE 7
  • Performance ✓
  • Productivity
  • Fun

C++ gives us...

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SLIDE 8
  • Performance ✓
  • Productivity ✓
  • Fun

C++ gives us...

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  • Performance ✓
  • Productivity ✓
  • Fun ?

C++ gives us...

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Subject: [PATCH] Awesome new feature On Thu, March 8, 2011 PedanticGuy wrote: > On Wed, March 7, 2011 NewContributor wrote: > + void DoSomethingAwesome(Cats cats); ALL your methods are capitalized incorrectly... Please fix. Thx.

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C++ could be more fun...

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Tooling!

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Tooling!

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Tooling!

  • Correct indentation
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Tooling!

  • Correct indentation
  • Fixing style violations
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Tooling!

  • Correct indentation
  • Fixing style violations
  • Renaming variables
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Tooling!

  • Correct indentation
  • Fixing style violations
  • Renaming variables
  • Creating code structure
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Challenges...

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Challenges...

  • X-TU
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Challenges...

  • X-TU
  • Workflow Integration
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Challenges...

  • X-TU
  • Workflow Integration
  • Build Systems
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Challenges...

  • X-TU
  • Workflow Integration
  • Build Systems
  • Speed
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SLIDE 23

Tomorrowland

Clang

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Libraries Tomorrowland

Clang

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Libraries Tomorrowland

Clang

Tools

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Libraries Tomorrowland

Clang

IDE'ish Services Tools

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Libraries Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

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Libraries Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

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Libraries

  • Tooling

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

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Clang tooling layers

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Clang tooling layers

  • Clang Plugins
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Clang tooling layers

  • Clang Plugins
  • libClang
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Clang tooling layers

  • Clang Plugins
  • libClang
  • libTooling
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libTooling

  • Run over a string
  • Run over multiple files in a project
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bool RunToolOnCode( FrontendAction *ToolAction, Twine Code, Twine FileName);

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Libraries

  • Tooling

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

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Libraries

  • Tooling
  • Refactoring

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

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Hide ALL the complexity!

  • Apply
  • Deduplicated
  • Edits
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Libraries

  • Tooling
  • Refactoring

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

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RAV Considered Complicated

Call(Callee(Method(HasName( "eat"))) eat(); honey.eat(); (*eat)();

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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

  • clang-format
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The Whitespace Cure

  • configurable
  • boxable
  • context sensitive
  • correct
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

  • clang-format
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

  • clang-format
  • clang-lint
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Phoenix rising

  • interactive automatic fixes
  • configure patterns
  • minimize false positives
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

  • clang-format
  • clang-lint
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

  • clang-format
  • clang-lint
  • clang-rename
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Common Code Transformations

  • autonomous and integrated
  • fast and correct
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

  • clang-format
  • clang-lint
  • clang-rename
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services Editor Integration Tools

  • clang-format
  • clang-lint
  • clang-rename
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services

ClangD

Editor Integration Tools

  • clang-format
  • clang-lint
  • clang-rename
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ClangD manages...

  • dirty buffers
  • caches parsing
  • open RPC interface
  • build system integration
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ClangD provides...

  • fast context information
  • complete code
  • run actions
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services

ClangD

Editor Integration Tools

  • clang-format
  • clang-lint
  • clang-rename
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services

ClangD

Editor Integration Tools

  • clang-format
  • clang-lint
  • clang-rename
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services

ClangD

Editor Integration

  • Emacs
  • Vim
  • Eclipse

Tools

  • clang-format
  • clang-lint
  • clang-rename
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IDE everywhere

  • command line
  • emacs, vi
  • integrate other IDEs
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services

ClangD

Editor Integration

  • Emacs
  • Vim
  • Eclipse

Tools

  • clang-format
  • clang-lint
  • clang-rename
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Libraries

  • Tooling
  • Refactoring
  • ASTMatchers

Tomorrowland

Clang

IDE'ish Services

ClangD

Editor Integration

  • Emacs
  • Vim
  • Eclipse

Tools

  • clang-format
  • clang-lint
  • clang-rename
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Where are we?

  • Libraries... in progress.
  • Tools... early spikes.
  • ClangD... entering design phase.
  • Editor integration...
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What's next?

You!

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References

Discussions, ideas: Bring them up on cfe-dev@cs.uiuc.edu Tooling Branch (beware, spiky) cfe/branches/tooling Clang MapReduce -- Automatic C++ Refactoring at Google Scale http://llvm.org/devmtg/2011-11/#talk2