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comparison rust/hg-core/src/lib.rs @ 41348:2f54f31c41aa stable

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rust: working directory revision number constant This introduces the constant, but does not use it anywhere yet.
author Georges Racinet <georges.racinet@octobus.net>
date Wed, 23 Jan 2019 07:39:27 -0500
parents 47881d2a9d99
children ee943a920606
comparison
equal deleted inserted replaced
41308:26ee61c33dee 41348:2f54f31c41aa
14 /// 4 bytes, and are liberally converted to ints, whence the i32 14 /// 4 bytes, and are liberally converted to ints, whence the i32
15 pub type Revision = i32; 15 pub type Revision = i32;
16 16
17 pub const NULL_REVISION: Revision = -1; 17 pub const NULL_REVISION: Revision = -1;
18 18
19 /// Same as `mercurial.node.wdirrev`
20 ///
21 /// This is also equal to `i32::max_value()`, but it's better to spell
22 /// it out explicitely, same as in `mercurial.node`
23 pub const WORKING_DIRECTORY_REVISION: Revision = 0x7fffffff;
24
19 /// The simplest expression of what we need of Mercurial DAGs. 25 /// The simplest expression of what we need of Mercurial DAGs.
20 pub trait Graph { 26 pub trait Graph {
21 /// Return the two parents of the given `Revision`. 27 /// Return the two parents of the given `Revision`.
22 /// 28 ///
23 /// Each of the parents can be independently `NULL_REVISION` 29 /// Each of the parents can be independently `NULL_REVISION`