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annotate rust/hg-core/src/lib.rs @ 47992:796206e74b10

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rhg: Reuse manifest when checking status of multiple ambiguous files When `rhg status` cannot determine whether a file is clean based on mtime and size alone, it needs to compare its contents with those found in the parent commit. Previously, rhg would find the (same) manifest of that commit again for every such file. This is lifted out of the loop and reused. Differential Revision: https://phab.mercurial-scm.org/D11411
author Simon Sapin <simon.sapin@octobus.net>
date Mon, 13 Sep 2021 18:09:10 +0200
parents 9cd35c8c6044
children bf8837e3d7ce
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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cb2e2b095dc9 rust-core: updated copyright notice
Georges Racinet <georges.racinet@octobus.net>
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1 // Copyright 2018-2020 Georges Racinet <georges.racinet@octobus.net>
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2 // and Mercurial contributors
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3 //
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4 // This software may be used and distributed according to the terms of the
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5 // GNU General Public License version 2 or any later version.
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6
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7 mod ancestors;
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8 pub mod dagops;
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9 pub mod errors;
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10 pub use ancestors::{AncestorsIterator, LazyAncestors, MissingAncestors};
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11 pub mod dirstate;
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12 pub mod dirstate_tree;
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13 pub mod discovery;
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14 pub mod exit_codes;
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15 pub mod requirements;
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16 pub mod testing; // unconditionally built, for use from integration tests
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17 pub use dirstate::{
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18 dirs_multiset::{DirsMultiset, DirsMultisetIter},
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19 dirstate_map::DirstateMap,
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20 parsers::{pack_dirstate, parse_dirstate, PARENT_SIZE},
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21 status::{
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22 status, BadMatch, BadType, DirstateStatus, HgPathCow, StatusError,
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23 StatusOptions,
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24 },
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25 CopyMap, CopyMapIter, DirstateEntry, DirstateParents, EntryState,
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26 StateMap, StateMapIter,
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27 };
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28 pub mod copy_tracing;
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29 mod filepatterns;
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30 pub mod matchers;
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31 pub mod repo;
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32 pub mod revlog;
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33 pub use revlog::*;
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34 pub mod config;
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35 pub mod logging;
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36 pub mod operations;
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37 pub mod revset;
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38 pub mod utils;
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39 pub mod vfs;
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40
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41 use crate::utils::hg_path::{HgPathBuf, HgPathError};
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42 pub use filepatterns::{
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43 parse_pattern_syntax, read_pattern_file, IgnorePattern,
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44 PatternFileWarning, PatternSyntax,
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45 };
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46 use std::collections::HashMap;
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47 use std::fmt;
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48 use twox_hash::RandomXxHashBuilder64;
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49
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50 /// This is a contract between the `micro-timer` crate and us, to expose
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51 /// the `log` crate as `crate::log`.
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52 use log;
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53
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54 pub type LineNumber = usize;
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55
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56 /// Rust's default hasher is too slow because it tries to prevent collision
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57 /// attacks. We are not concerned about those: if an ill-minded person has
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58 /// write access to your repository, you have other issues.
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59 pub type FastHashMap<K, V> = HashMap<K, V, RandomXxHashBuilder64>;
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60
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61 #[derive(Debug, PartialEq)]
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62 pub enum DirstateMapError {
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63 PathNotFound(HgPathBuf),
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64 EmptyPath,
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65 InvalidPath(HgPathError),
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66 }
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67
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68 impl fmt::Display for DirstateMapError {
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69 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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70 match self {
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71 DirstateMapError::PathNotFound(_) => {
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72 f.write_str("expected a value, found none")
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73 }
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74 DirstateMapError::EmptyPath => {
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75 f.write_str("Overflow in dirstate.")
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76 }
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77 DirstateMapError::InvalidPath(path_error) => path_error.fmt(f),
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78 }
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79 }
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80 }
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81
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82 #[derive(Debug, derive_more::From)]
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83 pub enum DirstateError {
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84 Map(DirstateMapError),
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85 Common(errors::HgError),
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86 }
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87
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88 impl fmt::Display for DirstateError {
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89 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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90 match self {
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91 DirstateError::Map(error) => error.fmt(f),
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92 DirstateError::Common(error) => error.fmt(f),
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93 }
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94 }
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95 }
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96
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97 #[derive(Debug, derive_more::From)]
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98 pub enum PatternError {
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99 #[from]
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100 Path(HgPathError),
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101 UnsupportedSyntax(String),
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102 UnsupportedSyntaxInFile(String, String, usize),
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103 TooLong(usize),
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104 #[from]
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105 IO(std::io::Error),
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106 /// Needed a pattern that can be turned into a regex but got one that
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107 /// can't. This should only happen through programmer error.
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108 NonRegexPattern(IgnorePattern),
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109 }
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110
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111 impl fmt::Display for PatternError {
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112 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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113 match self {
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114 PatternError::UnsupportedSyntax(syntax) => {
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115 write!(f, "Unsupported syntax {}", syntax)
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116 }
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117 PatternError::UnsupportedSyntaxInFile(syntax, file_path, line) => {
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118 write!(
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119 f,
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120 "{}:{}: unsupported syntax {}",
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121 file_path, line, syntax
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122 )
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123 }
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124 PatternError::TooLong(size) => {
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125 write!(f, "matcher pattern is too long ({} bytes)", size)
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126 }
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127 PatternError::IO(error) => error.fmt(f),
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128 PatternError::Path(error) => error.fmt(f),
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129 PatternError::NonRegexPattern(pattern) => {
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130 write!(f, "'{:?}' cannot be turned into a regex", pattern)
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131 }
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132 }
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133 }
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134 }