Mercurial > hg
view rust/hg-core/src/lib.rs @ 42424:d3b5cbe311d9
rust-dirstate: create dirstate submodule
This change is here to facilitate a future patch that is written in a
different file. I expect this module to grow a few different files.
Differential Revision: https://phab.mercurial-scm.org/D6389
author | Raphaël Gomès <rgomes@octobus.net> |
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date | Thu, 16 May 2019 16:22:20 +0200 |
parents | e8f3740cc067 |
children | 9609430d3625 |
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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. extern crate byteorder; extern crate memchr; #[macro_use] extern crate lazy_static; extern crate regex; mod ancestors; pub mod dagops; pub use ancestors::{AncestorsIterator, LazyAncestors, MissingAncestors}; mod dirstate; pub mod discovery; pub mod testing; // unconditionally built, for use from integration tests pub use dirstate::{ parsers::{pack_dirstate, parse_dirstate}, CopyVec, CopyVecEntry, DirstateEntry, DirstateParents, DirstateVec, }; mod filepatterns; pub use filepatterns::{ build_single_regex, read_pattern_file, PatternSyntax, PatternTuple, }; /// 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; /// Marker expressing the absence of a parent /// /// Independently of the actual representation, `NULL_REVISION` is guaranteed /// to be smaller that all existing revisions. pub const NULL_REVISION: Revision = -1; /// Same as `mercurial.node.wdirrev` /// /// This is also equal to `i32::max_value()`, but it's better to spell /// it out explicitely, same as in `mercurial.node` pub const WORKING_DIRECTORY_REVISION: Revision = 0x7fffffff; /// The simplest expression of what we need of Mercurial DAGs. pub trait Graph { /// Return the two parents of the given `Revision`. /// /// Each of the parents can be independently `NULL_REVISION` fn parents(&self, Revision) -> Result<[Revision; 2], GraphError>; } pub type LineNumber = usize; #[derive(Clone, Debug, PartialEq)] pub enum GraphError { ParentOutOfRange(Revision), WorkingDirectoryUnsupported, } #[derive(Clone, Debug, PartialEq)] pub enum DirstateParseError { TooLittleData, Overflow, CorruptedEntry(String), } #[derive(Debug, PartialEq)] pub enum DirstatePackError { CorruptedEntry(String), CorruptedParent, BadSize(usize, usize), } impl From<std::io::Error> for DirstatePackError { fn from(e: std::io::Error) -> Self { DirstatePackError::CorruptedEntry(e.to_string()) } } impl From<std::io::Error> for DirstateParseError { fn from(e: std::io::Error) -> Self { DirstateParseError::CorruptedEntry(e.to_string()) } } #[derive(Debug)] pub enum PatternError { UnsupportedSyntax(String), } #[derive(Debug)] pub enum PatternFileError { IO(std::io::Error), Pattern(PatternError, LineNumber), } impl From<std::io::Error> for PatternFileError { fn from(e: std::io::Error) -> Self { PatternFileError::IO(e) } }