upstream/mercurial-mirror Files · rust/chg/src/lib.rs

rust: make `Revision` a newtype...

rust: make `Revision` a newtype This change is the one we've been building towards during this series. The aim is to make `Revision` mean more than a simple integer, holding the information that it is valid for a given revlog index. While this still allows for programmer error, since creating a revision directly and querying a different index with a "checked" revision are still possible, the friction created by the newtype will hopefully make us think twice about which type to use. Enough of the Rust ecosystem relies on the newtype pattern to be efficiently optimized away (even compiler in codegen tests¹), so I'm not worried about this being a fundamental problem. [1] https://github.com/rust-lang/rust/blob/7a70647f195f6b0a0f1ebd72b1542ba91a32f43a/tests/codegen/vec-in-place.rs#L47

Yuya Nishihara - - Load All Authors

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             lib.rs
        
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                | application/rls-services+xml
            
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             / rust / chg / src / lib.rs
          
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      // Copyright 2018 Yuya Nishihara <yuya@tcha.org>

      //

      // This software may be used and distributed according to the terms of the

      // GNU General Public License version 2 or any later version.

      mod attachio;

      mod clientext;

      pub mod locator;

      pub mod message;

      pub mod procutil;

      mod runcommand;

      mod uihandler;

      pub use clientext::ChgClient;

      pub use uihandler::{ChgUiHandler, SystemHandler};

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				// Copyright 2018 Yuya Nishihara <yuya@tcha.org>
				//
				// This software may be used and distributed according to the terms of the
				// GNU General Public License version 2 or any later version.

				mod attachio;
				mod clientext;
				pub mod locator;
				pub mod message;
				pub mod procutil;
				mod runcommand;
				mod uihandler;

				pub use clientext::ChgClient;
				pub use uihandler::{ChgUiHandler, SystemHandler};