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annotate rust/hg-core/src/lib.rs @ 49487:e8481625c582

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rust: add Debug constraint to Matcher trait This makes sure we can easily debug which Matcher we're looking at when using trait objects, and is just generally useful. Effort to make the debugging output nicer has been kept to a minimum, please feel free to improve.
author Rapha?l Gom?s <rgomes@octobus.net>
date Mon, 11 Jul 2022 11:59:13 +0200
parents ffd4b1f1c9cb
children 7c93e38a0bbd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 mod sparse;
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11 pub use ancestors::{AncestorsIterator, MissingAncestors};
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12 pub mod dirstate;
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13 pub mod dirstate_tree;
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14 pub mod discovery;
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15 pub mod exit_codes;
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16 pub mod requirements;
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17 pub mod testing; // unconditionally built, for use from integration tests
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18 pub use dirstate::{
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19 dirs_multiset::{DirsMultiset, DirsMultisetIter},
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20 status::{
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21 BadMatch, BadType, DirstateStatus, HgPathCow, StatusError,
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22 StatusOptions,
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23 },
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24 DirstateEntry, DirstateParents, EntryState,
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25 };
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26 pub mod copy_tracing;
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27 mod filepatterns;
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28 pub mod matchers;
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29 pub mod repo;
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30 pub mod revlog;
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31 pub use revlog::*;
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32 pub mod config;
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33 pub mod lock;
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34 pub mod logging;
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35 pub mod operations;
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36 pub mod revset;
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37 pub mod utils;
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38 pub mod vfs;
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39
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40 use crate::utils::hg_path::{HgPathBuf, HgPathError};
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41 pub use filepatterns::{
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42 parse_pattern_syntax, read_pattern_file, IgnorePattern,
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43 PatternFileWarning, PatternSyntax,
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44 };
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45 use std::collections::HashMap;
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46 use std::fmt;
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47 use twox_hash::RandomXxHashBuilder64;
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48
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49 /// This is a contract between the `micro-timer` crate and us, to expose
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50 /// the `log` crate as `crate::log`.
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51 use log;
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52
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53 pub type LineNumber = usize;
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54
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55 /// Rust's default hasher is too slow because it tries to prevent collision
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56 /// attacks. We are not concerned about those: if an ill-minded person has
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57 /// write access to your repository, you have other issues.
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58 pub type FastHashMap<K, V> = HashMap<K, V, RandomXxHashBuilder64>;
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59
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60 // TODO: should this be the default `FastHashMap` for all of hg-core, not just
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61 // dirstate_tree? How does XxHash compare with AHash, hashbrown’s default?
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62 pub type FastHashbrownMap<K, V> =
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63 hashbrown::HashMap<K, V, RandomXxHashBuilder64>;
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64
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65 #[derive(Debug, PartialEq)]
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66 pub enum DirstateMapError {
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67 PathNotFound(HgPathBuf),
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68 EmptyPath,
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69 InvalidPath(HgPathError),
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70 }
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71
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72 impl fmt::Display for DirstateMapError {
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73 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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74 match self {
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75 DirstateMapError::PathNotFound(_) => {
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76 f.write_str("expected a value, found none")
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77 }
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78 DirstateMapError::EmptyPath => {
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79 f.write_str("Overflow in dirstate.")
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80 }
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81 DirstateMapError::InvalidPath(path_error) => path_error.fmt(f),
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82 }
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83 }
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84 }
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85
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86 #[derive(Debug, derive_more::From)]
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87 pub enum DirstateError {
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88 Map(DirstateMapError),
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89 Common(errors::HgError),
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90 }
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91
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92 impl fmt::Display for DirstateError {
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93 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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94 match self {
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95 DirstateError::Map(error) => error.fmt(f),
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96 DirstateError::Common(error) => error.fmt(f),
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97 }
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98 }
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99 }
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100
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101 #[derive(Debug, derive_more::From)]
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102 pub enum PatternError {
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103 #[from]
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104 Path(HgPathError),
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105 UnsupportedSyntax(String),
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106 UnsupportedSyntaxInFile(String, String, usize),
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107 TooLong(usize),
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108 #[from]
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109 IO(std::io::Error),
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110 /// Needed a pattern that can be turned into a regex but got one that
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111 /// can't. This should only happen through programmer error.
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112 NonRegexPattern(IgnorePattern),
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113 }
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114
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115 impl fmt::Display for PatternError {
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116 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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117 match self {
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parents: 44283
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118 PatternError::UnsupportedSyntax(syntax) => {
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6c778d20c8c2 rust: replace ToString impls with Display
Simon Sapin <simon.sapin@octobus.net>
parents: 46443
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119 write!(f, "Unsupported syntax {}", syntax)
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d42eea9a0494 rust-filepatterns: improve API and robustness for pattern files parsing
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parents: 44283
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120 }
d42eea9a0494 rust-filepatterns: improve API and robustness for pattern files parsing
Rapha?l Gom?s <rgomes@octobus.net>
parents: 44283
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121 PatternError::UnsupportedSyntaxInFile(syntax, file_path, line) => {
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6c778d20c8c2 rust: replace ToString impls with Display
Simon Sapin <simon.sapin@octobus.net>
parents: 46443
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122 write!(
6c778d20c8c2 rust: replace ToString impls with Display
Simon Sapin <simon.sapin@octobus.net>
parents: 46443
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123 f,
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d42eea9a0494 rust-filepatterns: improve API and robustness for pattern files parsing
Rapha?l Gom?s <rgomes@octobus.net>
parents: 44283
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124 "{}:{}: unsupported syntax {}",
d42eea9a0494 rust-filepatterns: improve API and robustness for pattern files parsing
Rapha?l Gom?s <rgomes@octobus.net>
parents: 44283
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125 file_path, line, syntax
d42eea9a0494 rust-filepatterns: improve API and robustness for pattern files parsing
Rapha?l Gom?s <rgomes@octobus.net>
parents: 44283
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126 )
d42eea9a0494 rust-filepatterns: improve API and robustness for pattern files parsing
Rapha?l Gom?s <rgomes@octobus.net>
parents: 44283
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127 }
d42eea9a0494 rust-filepatterns: improve API and robustness for pattern files parsing
Rapha?l Gom?s <rgomes@octobus.net>
parents: 44283
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128 PatternError::TooLong(size) => {
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6c778d20c8c2 rust: replace ToString impls with Display
Simon Sapin <simon.sapin@octobus.net>
parents: 46443
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129 write!(f, "matcher pattern is too long ({} bytes)", size)
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d42eea9a0494 rust-filepatterns: improve API and robustness for pattern files parsing
Rapha?l Gom?s <rgomes@octobus.net>
parents: 44283
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130 }
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6c778d20c8c2 rust: replace ToString impls with Display
Simon Sapin <simon.sapin@octobus.net>
parents: 46443
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131 PatternError::IO(error) => error.fmt(f),
6c778d20c8c2 rust: replace ToString impls with Display
Simon Sapin <simon.sapin@octobus.net>
parents: 46443
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132 PatternError::Path(error) => error.fmt(f),
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2fe89bec8011 rust-filepatterns: add support for `include` and `subinclude` patterns
Rapha?l Gom?s <rgomes@octobus.net>
parents: 44303
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133 PatternError::NonRegexPattern(pattern) => {
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6c778d20c8c2 rust: replace ToString impls with Display
Simon Sapin <simon.sapin@octobus.net>
parents: 46443
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134 write!(f, "'{:?}' cannot be turned into a regex", pattern)
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2fe89bec8011 rust-filepatterns: add support for `include` and `subinclude` patterns
Rapha?l Gom?s <rgomes@octobus.net>
parents: 44303
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135 }
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d42eea9a0494 rust-filepatterns: improve API and robustness for pattern files parsing
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parents: 44283
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136 }
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e8f3740cc067 rust-filepatterns: add a Rust implementation of pattern-related utils
Rapha?l Gom?s <rgomes@octobus.net>
parents: 42303
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137 }
e8f3740cc067 rust-filepatterns: add a Rust implementation of pattern-related utils
Rapha?l Gom?s <rgomes@octobus.net>
parents: 42303
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138 }