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annotate rust/hg-core/src/lib.rs @ 42648:d80edcb0b30c stable

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automation: make Windows base image name configurable Since automation broke in the middle of the 5.0 release cycle, there's a good chance it will break again in the future. While a robust solution might be to search for all available images and choose the newest one, it does seem useful to be able to explicitly choose the name of the image to find and use so users can opt in to using a different image. This commit implements that functionality. Differential Revision: https://phab.mercurial-scm.org/D6673
author Gregory Szorc <gregory.szorc@gmail.com>
date Mon, 22 Jul 2019 19:06:20 -0700
parents 5672bb73f61e
children 7cae6bc29ff9
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1 // Copyright 2018 Georges Racinet <gracinet@anybox.fr>
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2 //
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3 // This software may be used and distributed according to the terms of the
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4 // GNU General Public License version 2 or any later version.
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5 mod ancestors;
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6 pub mod dagops;
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7 pub use ancestors::{AncestorsIterator, LazyAncestors, MissingAncestors};
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8 mod dirstate;
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9 pub mod discovery;
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10 pub mod testing; // unconditionally built, for use from integration tests
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11 pub use dirstate::{
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12 dirs_multiset::DirsMultiset,
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13 parsers::{pack_dirstate, parse_dirstate},
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14 CopyVec, CopyVecEntry, DirsIterable, DirstateEntry, DirstateParents,
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15 DirstateVec,
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16 };
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17 mod filepatterns;
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18 pub mod utils;
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19
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20 pub use filepatterns::{
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21 build_single_regex, read_pattern_file, PatternSyntax, PatternTuple,
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22 };
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23
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24 /// Mercurial revision numbers
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25 ///
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26 /// As noted in revlog.c, revision numbers are actually encoded in
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27 /// 4 bytes, and are liberally converted to ints, whence the i32
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28 pub type Revision = i32;
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29
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30 /// Marker expressing the absence of a parent
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31 ///
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32 /// Independently of the actual representation, `NULL_REVISION` is guaranteed
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33 /// to be smaller that all existing revisions.
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34 pub const NULL_REVISION: Revision = -1;
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35
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36 /// Same as `mercurial.node.wdirrev`
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37 ///
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38 /// This is also equal to `i32::max_value()`, but it's better to spell
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39 /// it out explicitely, same as in `mercurial.node`
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40 pub const WORKING_DIRECTORY_REVISION: Revision = 0x7fffffff;
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41
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42 /// The simplest expression of what we need of Mercurial DAGs.
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43 pub trait Graph {
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44 /// Return the two parents of the given `Revision`.
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45 ///
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46 /// Each of the parents can be independently `NULL_REVISION`
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47 fn parents(&self, rev: Revision) -> Result<[Revision; 2], GraphError>;
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48 }
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49
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50 pub type LineNumber = usize;
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51
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52 #[derive(Clone, Debug, PartialEq)]
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53 pub enum GraphError {
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54 ParentOutOfRange(Revision),
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55 WorkingDirectoryUnsupported,
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56 }
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57
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58 #[derive(Clone, Debug, PartialEq)]
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59 pub enum DirstateParseError {
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60 TooLittleData,
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61 Overflow,
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62 CorruptedEntry(String),
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63 }
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64
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65 #[derive(Debug, PartialEq)]
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66 pub enum DirstatePackError {
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67 CorruptedEntry(String),
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68 CorruptedParent,
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69 BadSize(usize, usize),
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70 }
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71
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72 #[derive(Debug, PartialEq)]
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73 pub enum DirstateMapError {
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74 PathNotFound(Vec<u8>),
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75 EmptyPath,
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76 }
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77
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78 impl From<std::io::Error> for DirstatePackError {
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79 fn from(e: std::io::Error) -> Self {
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80 DirstatePackError::CorruptedEntry(e.to_string())
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81 }
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82 }
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83
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84 impl From<std::io::Error> for DirstateParseError {
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85 fn from(e: std::io::Error) -> Self {
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86 DirstateParseError::CorruptedEntry(e.to_string())
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87 }
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88 }
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89
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90 #[derive(Debug)]
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91 pub enum PatternError {
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92 UnsupportedSyntax(String),
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93 }
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94
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95 #[derive(Debug)]
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96 pub enum PatternFileError {
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97 IO(std::io::Error),
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98 Pattern(PatternError, LineNumber),
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99 }
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100
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101 impl From<std::io::Error> for PatternFileError {
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102 fn from(e: std::io::Error) -> Self {
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103 PatternFileError::IO(e)
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104 }
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105 }