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annotate rust/rhg/src/error.rs @ 48674:f7086f6173f8 stable

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dirstate-v2: rename the configuration to enable the format The rename of the old experimental name was overlooked before the 6.0 release. We rename everything to use the new name (and keep the released name as an alias for compatibility). Differential Revision: https://phab.mercurial-scm.org/D12129
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Tue, 01 Feb 2022 16:36:20 +0100
parents ff97e793ed36
children 006688e36e12
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 use crate::ui::utf8_to_local;
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2 use crate::ui::UiError;
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3 use crate::NoRepoInCwdError;
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4 use format_bytes::format_bytes;
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5 use hg::config::{ConfigError, ConfigParseError, ConfigValueParseError};
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6 use hg::dirstate_tree::on_disk::DirstateV2ParseError;
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7 use hg::errors::HgError;
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8 use hg::exit_codes;
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9 use hg::repo::RepoError;
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10 use hg::revlog::revlog::RevlogError;
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11 use hg::utils::files::get_bytes_from_path;
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12 use hg::{DirstateError, DirstateMapError, StatusError};
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13 use std::convert::From;
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14
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15 /// The kind of command error
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16 #[derive(Debug)]
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17 pub enum CommandError {
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18 /// Exit with an error message and "standard" failure exit code.
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19 Abort {
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20 message: Vec<u8>,
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21 detailed_exit_code: exit_codes::ExitCode,
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22 },
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23
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24 /// Exit with a failure exit code but no message.
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25 Unsuccessful,
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26
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27 /// Encountered something (such as a CLI argument, repository layout, …)
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28 /// not supported by this version of `rhg`. Depending on configuration
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29 /// `rhg` may attempt to silently fall back to Python-based `hg`, which
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30 /// may or may not support this feature.
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31 UnsupportedFeature { message: Vec<u8> },
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32 }
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33
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34 impl CommandError {
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35 pub fn abort(message: impl AsRef<str>) -> Self {
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36 CommandError::abort_with_exit_code(message, exit_codes::ABORT)
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37 }
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38
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39 pub fn abort_with_exit_code(
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40 message: impl AsRef<str>,
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41 detailed_exit_code: exit_codes::ExitCode,
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42 ) -> Self {
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43 CommandError::Abort {
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44 // TODO: bytes-based (instead of Unicode-based) formatting
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45 // of error messages to handle non-UTF-8 filenames etc:
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46 // https://www.mercurial-scm.org/wiki/EncodingStrategy#Mixing_output
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47 message: utf8_to_local(message.as_ref()).into(),
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48 detailed_exit_code: detailed_exit_code,
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49 }
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50 }
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51
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52 pub fn unsupported(message: impl AsRef<str>) -> Self {
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53 CommandError::UnsupportedFeature {
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54 message: utf8_to_local(message.as_ref()).into(),
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55 }
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56 }
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57 }
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58
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59 /// For now we don’t differenciate between invalid CLI args and valid for `hg`
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60 /// but not supported yet by `rhg`.
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61 impl From<clap::Error> for CommandError {
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62 fn from(error: clap::Error) -> Self {
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63 CommandError::unsupported(error.to_string())
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64 }
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65 }
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66
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67 impl From<HgError> for CommandError {
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68 fn from(error: HgError) -> Self {
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69 match error {
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70 HgError::UnsupportedFeature(message) => {
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71 CommandError::unsupported(message)
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72 }
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73 HgError::Abort {
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74 message,
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75 detailed_exit_code,
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76 } => {
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77 CommandError::abort_with_exit_code(message, detailed_exit_code)
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78 }
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79 _ => CommandError::abort(error.to_string()),
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80 }
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81 }
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82 }
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83
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84 impl From<ConfigValueParseError> for CommandError {
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85 fn from(error: ConfigValueParseError) -> Self {
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86 CommandError::abort_with_exit_code(
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87 error.to_string(),
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88 exit_codes::CONFIG_ERROR_ABORT,
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89 )
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90 }
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91 }
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92
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93 impl From<UiError> for CommandError {
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94 fn from(_error: UiError) -> Self {
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95 // If we already failed writing to stdout or stderr,
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96 // writing an error message to stderr about it would be likely to fail
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97 // too.
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98 CommandError::abort("")
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99 }
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100 }
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101
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102 impl From<RepoError> for CommandError {
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103 fn from(error: RepoError) -> Self {
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104 match error {
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105 RepoError::NotFound { at } => CommandError::Abort {
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106 message: format_bytes!(
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107 b"abort: repository {} not found",
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108 get_bytes_from_path(at)
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109 ),
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110 detailed_exit_code: exit_codes::ABORT,
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111 },
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112 RepoError::ConfigParseError(error) => error.into(),
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113 RepoError::Other(error) => error.into(),
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114 }
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115 }
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116 }
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117
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118 impl<'a> From<&'a NoRepoInCwdError> for CommandError {
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119 fn from(error: &'a NoRepoInCwdError) -> Self {
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120 let NoRepoInCwdError { cwd } = error;
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121 CommandError::Abort {
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122 message: format_bytes!(
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123 b"abort: no repository found in '{}' (.hg not found)!",
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124 get_bytes_from_path(cwd)
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125 ),
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126 detailed_exit_code: exit_codes::ABORT,
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127 }
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128 }
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129 }
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130
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131 impl From<ConfigError> for CommandError {
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132 fn from(error: ConfigError) -> Self {
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133 match error {
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134 ConfigError::Parse(error) => error.into(),
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135 ConfigError::Other(error) => error.into(),
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136 }
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137 }
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138 }
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139
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140 impl From<ConfigParseError> for CommandError {
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141 fn from(error: ConfigParseError) -> Self {
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142 let ConfigParseError {
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143 origin,
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144 line,
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145 message,
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146 } = error;
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147 let line_message = if let Some(line_number) = line {
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148 format_bytes!(b":{}", line_number.to_string().into_bytes())
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149 } else {
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150 Vec::new()
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151 };
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152 CommandError::Abort {
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153 message: format_bytes!(
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154 b"config error at {}{}: {}",
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155 origin,
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156 line_message,
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157 message
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158 ),
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159 detailed_exit_code: exit_codes::CONFIG_ERROR_ABORT,
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160 }
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161 }
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162 }
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163
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164 impl From<(RevlogError, &str)> for CommandError {
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165 fn from((err, rev): (RevlogError, &str)) -> CommandError {
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166 match err {
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167 RevlogError::WDirUnsupported => CommandError::abort(
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168 "abort: working directory revision cannot be specified",
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169 ),
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170 RevlogError::InvalidRevision => CommandError::abort(format!(
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171 "abort: invalid revision identifier: {}",
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172 rev
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173 )),
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174 RevlogError::AmbiguousPrefix => CommandError::abort(format!(
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175 "abort: ambiguous revision identifier: {}",
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176 rev
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177 )),
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178 RevlogError::Other(error) => error.into(),
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179 }
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180 }
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181 }
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182
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183 impl From<StatusError> for CommandError {
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184 fn from(error: StatusError) -> Self {
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185 CommandError::abort(format!("{}", error))
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186 }
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187 }
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188
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189 impl From<DirstateMapError> for CommandError {
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190 fn from(error: DirstateMapError) -> Self {
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191 CommandError::abort(format!("{}", error))
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192 }
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193 }
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194
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195 impl From<DirstateError> for CommandError {
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196 fn from(error: DirstateError) -> Self {
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197 match error {
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198 DirstateError::Common(error) => error.into(),
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199 DirstateError::Map(error) => error.into(),
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200 }
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201 }
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202 }
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203
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204 impl From<DirstateV2ParseError> for CommandError {
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205 fn from(error: DirstateV2ParseError) -> Self {
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206 HgError::from(error).into()
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207 }
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208 }