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annotate rust/hg-core/src/lib.rs @ 44586:f8427841c8fc

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merge with stable
author Yuya Nishihara <yuya@tcha.org>
date Fri, 20 Mar 2020 17:18:14 +0900
parents ece43c79333e df5dfee8cfb4
children 9f96beb9bafe
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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 // Remove this to see (potential) non-artificial compile failures. MacOS
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31 // *should* compile, but fail to compile tests for example as of 2020-03-06
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32 #[cfg(not(target_os = "linux"))]
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33 compile_error!(
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34 "`hg-core` has only been tested on Linux and will most \
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35 likely not behave correctly on other platforms."
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36 );
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37
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38 use crate::utils::hg_path::{HgPathBuf, HgPathError};
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39 pub use filepatterns::{
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40 parse_pattern_syntax, read_pattern_file, IgnorePattern,
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41 PatternFileWarning, PatternSyntax,
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42 };
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43 use std::collections::HashMap;
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44 use twox_hash::RandomXxHashBuilder64;
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45
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46 /// This is a contract between the `micro-timer` crate and us, to expose
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47 /// the `log` crate as `crate::log`.
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48 use log;
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49
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50 pub type LineNumber = usize;
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51
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52 /// Rust's default hasher is too slow because it tries to prevent collision
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53 /// attacks. We are not concerned about those: if an ill-minded person has
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54 /// write access to your repository, you have other issues.
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55 pub type FastHashMap<K, V> = HashMap<K, V, RandomXxHashBuilder64>;
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56
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57 #[derive(Clone, Debug, PartialEq)]
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58 pub enum DirstateParseError {
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59 TooLittleData,
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60 Overflow,
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61 CorruptedEntry(String),
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62 Damaged,
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63 }
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64
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65 impl From<std::io::Error> for DirstateParseError {
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66 fn from(e: std::io::Error) -> Self {
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67 DirstateParseError::CorruptedEntry(e.to_string())
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68 }
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69 }
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70
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71 impl ToString for DirstateParseError {
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72 fn to_string(&self) -> String {
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73 use crate::DirstateParseError::*;
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74 match self {
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75 TooLittleData => "Too little data for dirstate.".to_string(),
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76 Overflow => "Overflow in dirstate.".to_string(),
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77 CorruptedEntry(e) => format!("Corrupted entry: {:?}.", e),
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78 Damaged => "Dirstate appears to be damaged.".to_string(),
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79 }
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80 }
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81 }
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82
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83 #[derive(Debug, PartialEq)]
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84 pub enum DirstatePackError {
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85 CorruptedEntry(String),
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86 CorruptedParent,
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87 BadSize(usize, usize),
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88 }
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89
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90 impl From<std::io::Error> for DirstatePackError {
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91 fn from(e: std::io::Error) -> Self {
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92 DirstatePackError::CorruptedEntry(e.to_string())
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93 }
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94 }
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95 #[derive(Debug, PartialEq)]
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96 pub enum DirstateMapError {
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97 PathNotFound(HgPathBuf),
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98 EmptyPath,
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99 InvalidPath(HgPathError),
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100 }
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101
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102 impl ToString for DirstateMapError {
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103 fn to_string(&self) -> String {
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104 match self {
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105 DirstateMapError::PathNotFound(_) => {
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106 "expected a value, found none".to_string()
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107 }
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108 DirstateMapError::EmptyPath => "Overflow in dirstate.".to_string(),
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109 DirstateMapError::InvalidPath(e) => e.to_string(),
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110 }
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111 }
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112 }
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113
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114 #[derive(Debug)]
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115 pub enum DirstateError {
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116 Parse(DirstateParseError),
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117 Pack(DirstatePackError),
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118 Map(DirstateMapError),
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119 IO(std::io::Error),
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120 }
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121
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122 impl From<DirstateParseError> for DirstateError {
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123 fn from(e: DirstateParseError) -> Self {
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124 DirstateError::Parse(e)
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125 }
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126 }
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127
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128 impl From<DirstatePackError> for DirstateError {
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129 fn from(e: DirstatePackError) -> Self {
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130 DirstateError::Pack(e)
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131 }
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132 }
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133
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134 #[derive(Debug)]
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135 pub enum PatternError {
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136 Path(HgPathError),
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137 UnsupportedSyntax(String),
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138 UnsupportedSyntaxInFile(String, String, usize),
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139 TooLong(usize),
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140 IO(std::io::Error),
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141 /// Needed a pattern that can be turned into a regex but got one that
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142 /// can't. This should only happen through programmer error.
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143 NonRegexPattern(IgnorePattern),
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144 /// This is temporary, see `re2/mod.rs`.
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145 /// This will cause a fallback to Python.
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146 Re2NotInstalled,
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147 }
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148
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149 impl ToString for PatternError {
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150 fn to_string(&self) -> String {
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151 match self {
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152 PatternError::UnsupportedSyntax(syntax) => {
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153 format!("Unsupported syntax {}", syntax)
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154 }
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155 PatternError::UnsupportedSyntaxInFile(syntax, file_path, line) => {
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156 format!(
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157 "{}:{}: unsupported syntax {}",
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158 file_path, line, syntax
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159 )
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160 }
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161 PatternError::TooLong(size) => {
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162 format!("matcher pattern is too long ({} bytes)", size)
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163 }
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164 PatternError::IO(e) => e.to_string(),
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165 PatternError::Path(e) => e.to_string(),
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166 PatternError::NonRegexPattern(pattern) => {
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167 format!("'{:?}' cannot be turned into a regex", pattern)
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168 }
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169 PatternError::Re2NotInstalled => {
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170 "Re2 is not installed, cannot use regex functionality."
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171 .to_string()
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172 }
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173 }
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174 }
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175 }
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176
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177 impl From<DirstateMapError> for DirstateError {
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178 fn from(e: DirstateMapError) -> Self {
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179 DirstateError::Map(e)
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180 }
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181 }
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182
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183 impl From<std::io::Error> for DirstateError {
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184 fn from(e: std::io::Error) -> Self {
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185 DirstateError::IO(e)
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186 }
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187 }
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188
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189 impl From<std::io::Error> for PatternError {
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190 fn from(e: std::io::Error) -> Self {
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191 PatternError::IO(e)
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192 }
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193 }
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194
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195 impl From<HgPathError> for PatternError {
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196 fn from(e: HgPathError) -> Self {
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197 PatternError::Path(e)
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198 }
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199 }