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annotate rust/hg-core/src/lib.rs @ 44541:d880805d5442

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hg-core: add function timing information This change makes use of the newly added logging infrastructure to trace the execution time of some important calls. This approach is very much complementary to using a profiler and will not guard against out-of-order execution or other kinds of compiler optimizations. That said, it is useful to get a rough high-level idea of where time is spent. Differential Revision: https://phab.mercurial-scm.org/D8253
author Rapha?l Gom?s <rgomes@octobus.net>
date Fri, 06 Mar 2020 18:08:23 +0100
parents c8891bca40fb
children ece43c79333e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 mod ancestors;
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7 pub mod dagops;
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8 pub use ancestors::{AncestorsIterator, LazyAncestors, MissingAncestors};
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9 mod dirstate;
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10 pub mod discovery;
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11 pub mod testing; // unconditionally built, for use from integration tests
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12 pub use dirstate::{
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13 dirs_multiset::{DirsMultiset, DirsMultisetIter},
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14 dirstate_map::DirstateMap,
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15 parsers::{pack_dirstate, parse_dirstate, PARENT_SIZE},
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16 status::{
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17 status, BadMatch, BadType, DirstateStatus, StatusError, StatusOptions,
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18 },
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19 CopyMap, CopyMapIter, DirstateEntry, DirstateParents, EntryState,
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20 StateMap, StateMapIter,
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21 };
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22 mod filepatterns;
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23 pub mod matchers;
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24 pub mod revlog;
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25 pub use revlog::*;
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26 #[cfg(feature = "with-re2")]
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27 pub mod re2;
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28 pub mod utils;
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29
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30 use crate::utils::hg_path::{HgPathBuf, HgPathError};
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31 pub use filepatterns::{
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32 parse_pattern_syntax, read_pattern_file, IgnorePattern,
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33 PatternFileWarning, PatternSyntax,
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34 };
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35 use std::collections::HashMap;
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36 use twox_hash::RandomXxHashBuilder64;
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37
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38 /// This is a contract between the `micro-timer` crate and us, to expose
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39 /// the `log` crate as `crate::log`.
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40 use log;
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41
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42 pub type LineNumber = usize;
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43
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44 /// Rust's default hasher is too slow because it tries to prevent collision
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45 /// attacks. We are not concerned about those: if an ill-minded person has
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46 /// write access to your repository, you have other issues.
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47 pub type FastHashMap<K, V> = HashMap<K, V, RandomXxHashBuilder64>;
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48
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49 #[derive(Clone, Debug, PartialEq)]
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50 pub enum DirstateParseError {
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51 TooLittleData,
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52 Overflow,
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53 CorruptedEntry(String),
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54 Damaged,
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55 }
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56
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57 impl From<std::io::Error> for DirstateParseError {
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58 fn from(e: std::io::Error) -> Self {
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59 DirstateParseError::CorruptedEntry(e.to_string())
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60 }
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61 }
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62
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63 impl ToString for DirstateParseError {
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64 fn to_string(&self) -> String {
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65 use crate::DirstateParseError::*;
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66 match self {
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67 TooLittleData => "Too little data for dirstate.".to_string(),
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68 Overflow => "Overflow in dirstate.".to_string(),
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69 CorruptedEntry(e) => format!("Corrupted entry: {:?}.", e),
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70 Damaged => "Dirstate appears to be damaged.".to_string(),
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71 }
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72 }
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73 }
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74
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75 #[derive(Debug, PartialEq)]
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76 pub enum DirstatePackError {
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77 CorruptedEntry(String),
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78 CorruptedParent,
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79 BadSize(usize, usize),
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80 }
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81
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82 impl From<std::io::Error> for DirstatePackError {
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83 fn from(e: std::io::Error) -> Self {
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84 DirstatePackError::CorruptedEntry(e.to_string())
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85 }
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86 }
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87 #[derive(Debug, PartialEq)]
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88 pub enum DirstateMapError {
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89 PathNotFound(HgPathBuf),
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90 EmptyPath,
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91 InvalidPath(HgPathError),
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92 }
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93
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94 impl ToString for DirstateMapError {
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95 fn to_string(&self) -> String {
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96 match self {
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97 DirstateMapError::PathNotFound(_) => {
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98 "expected a value, found none".to_string()
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99 }
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100 DirstateMapError::EmptyPath => "Overflow in dirstate.".to_string(),
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101 DirstateMapError::InvalidPath(e) => e.to_string(),
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102 }
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103 }
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104 }
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105
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106 pub enum DirstateError {
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107 Parse(DirstateParseError),
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108 Pack(DirstatePackError),
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109 Map(DirstateMapError),
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110 IO(std::io::Error),
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111 }
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112
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113 impl From<DirstateParseError> for DirstateError {
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114 fn from(e: DirstateParseError) -> Self {
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115 DirstateError::Parse(e)
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116 }
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117 }
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118
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119 impl From<DirstatePackError> for DirstateError {
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120 fn from(e: DirstatePackError) -> Self {
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121 DirstateError::Pack(e)
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122 }
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123 }
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124
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125 #[derive(Debug)]
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126 pub enum PatternError {
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127 Path(HgPathError),
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128 UnsupportedSyntax(String),
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129 UnsupportedSyntaxInFile(String, String, usize),
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130 TooLong(usize),
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131 IO(std::io::Error),
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132 /// Needed a pattern that can be turned into a regex but got one that
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133 /// can't. This should only happen through programmer error.
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134 NonRegexPattern(IgnorePattern),
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135 /// This is temporary, see `re2/mod.rs`.
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136 /// This will cause a fallback to Python.
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137 Re2NotInstalled,
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138 }
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139
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140 impl ToString for PatternError {
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141 fn to_string(&self) -> String {
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142 match self {
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143 PatternError::UnsupportedSyntax(syntax) => {
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144 format!("Unsupported syntax {}", syntax)
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145 }
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146 PatternError::UnsupportedSyntaxInFile(syntax, file_path, line) => {
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147 format!(
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148 "{}:{}: unsupported syntax {}",
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149 file_path, line, syntax
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150 )
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151 }
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152 PatternError::TooLong(size) => {
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153 format!("matcher pattern is too long ({} bytes)", size)
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154 }
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155 PatternError::IO(e) => e.to_string(),
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156 PatternError::Path(e) => e.to_string(),
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157 PatternError::NonRegexPattern(pattern) => {
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158 format!("'{:?}' cannot be turned into a regex", pattern)
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159 }
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160 PatternError::Re2NotInstalled => {
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161 "Re2 is not installed, cannot use regex functionality."
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162 .to_string()
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163 }
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164 }
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165 }
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166 }
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167
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168 impl From<DirstateMapError> for DirstateError {
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169 fn from(e: DirstateMapError) -> Self {
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170 DirstateError::Map(e)
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171 }
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172 }
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173
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174 impl From<std::io::Error> for DirstateError {
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175 fn from(e: std::io::Error) -> Self {
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176 DirstateError::IO(e)
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177 }
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178 }
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179
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180 impl From<std::io::Error> for PatternError {
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181 fn from(e: std::io::Error) -> Self {
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182 PatternError::IO(e)
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183 }
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184 }
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185
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186 impl From<HgPathError> for PatternError {
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187 fn from(e: HgPathError) -> Self {
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188 PatternError::Path(e)
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189 }
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190 }