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

rust: propagate error of index_get_parents() properly...

rust: propagate error of index_get_parents() properly Before, rustla_contains() would return 0 on error, and the exception would be cleared or noticed somewhere else. We need to propagate the error from AncestorsIterator up to the FFI surface.

Georges Racinet - - Load All Authors

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             lib.rs
        
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      // 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;

      pub use ancestors::AncestorsIterator;

      /// 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 {

          fn parents(&self, Revision) -> Result<(Revision, Revision), GraphError>;

      }

      #[derive(Clone, Debug, PartialEq)]

      pub enum GraphError {

          ParentOutOfRange(Revision),

      }

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				// 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;
				pub use ancestors::AncestorsIterator;

				/// 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 {
				fn parents(&self, Revision) -> Result<(Revision, Revision), GraphError>;
				}

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