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

rust: dagop.headrevs() Rust counterparts...

rust: dagop.headrevs() Rust counterparts This introduces two Rust implementations for `mercurial.dagop.headrevs`. The algorithm is identical to the Python version. Depending on the caller, one or the other could be the most practical, or the most performant, by minimizing the amount of memory copy and allocations. Differential Revision: https://phab.mercurial-scm.org/D5580

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             lib.rs
        
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                | application/rls-services+xml
            
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        Georges Racinet
    
rust: pure Rust lazyancestors iterator...

              r40307
            
      // Copyright 2018 Georges Racinet <gracinet@anybox.fr>

      //

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

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

      mod ancestors;

        Georges Racinet on ishtar.racinet.fr
    
rust: dagop.headrevs() Rust counterparts...

              r41278
            
      pub mod dagops;

        Georges Racinet
    
rust: core implementation for lazyancestors...

              r41084
            
      pub use ancestors::{AncestorsIterator, LazyAncestors, MissingAncestors};

        Georges Racinet
    
rust: factorized testing Graphs...

              r41277
            
      #[cfg(test)]

      pub mod testing;

        Georges Racinet
    
rust: pure Rust lazyancestors iterator...

              r40307
            
      /// Mercurial revision numbers

      ///

      /// As noted in revlog.c, revision numbers are actually encoded in

      /// 4 bytes, and are liberally converted to ints, whence the i32

      pub type Revision = i32;

      pub const NULL_REVISION: Revision = -1;

      /// The simplest expression of what we need of Mercurial DAGs.

      pub trait Graph {

        Georges Racinet
    
rust: translation of missingancestors...

              r40995
            
          /// Return the two parents of the given `Revision`.

          ///

          /// Each of the parents can be independently `NULL_REVISION`

        Georges Racinet
    
rust: changed Graph.parents to return [Revision; 2]...

              r40969
            
          fn parents(&self, Revision) -> Result<[Revision; 2], GraphError>;

        Georges Racinet
    
rust: pure Rust lazyancestors iterator...

              r40307
            
      }

      #[derive(Clone, Debug, PartialEq)]

      pub enum GraphError {

          ParentOutOfRange(Revision),

      }

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Georges Racinet rust: pure Rust lazyancestors iterator...	r40307	// Copyright 2018 Georges Racinet <gracinet@anybox.fr>
		//
		// This software may be used and distributed according to the terms of the
		// GNU General Public License version 2 or any later version.
		mod ancestors;
Georges Racinet on ishtar.racinet.fr rust: dagop.headrevs() Rust counterparts...	r41278	pub mod dagops;
Georges Racinet rust: core implementation for lazyancestors...	r41084	pub use ancestors::{AncestorsIterator, LazyAncestors, MissingAncestors};
Georges Racinet rust: factorized testing Graphs...	r41277	#[cfg(test)]
		pub mod testing;
Georges Racinet rust: pure Rust lazyancestors iterator...	r40307
		/// Mercurial revision numbers
		///
		/// As noted in revlog.c, revision numbers are actually encoded in
		/// 4 bytes, and are liberally converted to ints, whence the i32
		pub type Revision = i32;

		pub const NULL_REVISION: Revision = -1;

		/// The simplest expression of what we need of Mercurial DAGs.
		pub trait Graph {
Georges Racinet rust: translation of missingancestors...	r40995	/// Return the two parents of the given `Revision`.
		///
		/// Each of the parents can be independently `NULL_REVISION`
Georges Racinet rust: changed Graph.parents to return [Revision; 2]...	r40969	fn parents(&self, Revision) -> Result<[Revision; 2], GraphError>;
Georges Racinet rust: pure Rust lazyancestors iterator...	r40307	}

		#[derive(Clone, Debug, PartialEq)]
		pub enum GraphError {
		ParentOutOfRange(Revision),
		}