Mercurial > hg
annotate mercurial/error.py @ 42252:a42cc325b682
gendoc: nest command headers under category headers
Differential Revision: https://phab.mercurial-scm.org/D6329
author | Sietse Brouwer <sbbrouwer@gmail.com> |
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date | Fri, 26 Apr 2019 12:41:48 +0200 |
parents | 2393c4044214 |
children | 294afb982a88 |
rev | line source |
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1 # error.py - Mercurial exceptions |
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2 # |
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3 # Copyright 2005-2008 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
7633 | 7 |
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8 """Mercurial exceptions. |
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9 |
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10 This allows us to catch exceptions at higher levels without forcing |
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11 imports. |
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12 """ |
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13 |
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14 from __future__ import absolute_import |
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15 |
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16 # Do not import anything but pycompat here, please |
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17 from . import pycompat |
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18 |
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19 def _tobytes(exc): |
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20 """Byte-stringify exception in the same way as BaseException_str()""" |
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21 if not exc.args: |
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22 return b'' |
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23 if len(exc.args) == 1: |
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24 return pycompat.bytestr(exc.args[0]) |
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25 return b'(%s)' % b', '.join(b"'%s'" % pycompat.bytestr(a) for a in exc.args) |
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27 class Hint(object): |
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28 """Mix-in to provide a hint of an error |
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29 |
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30 This should come first in the inheritance list to consume a hint and |
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31 pass remaining arguments to the exception class. |
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32 """ |
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33 def __init__(self, *args, **kw): |
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34 self.hint = kw.pop(r'hint', None) |
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35 super(Hint, self).__init__(*args, **kw) |
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36 |
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37 class StorageError(Hint, Exception): |
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38 """Raised when an error occurs in a storage layer. |
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39 |
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40 Usually subclassed by a storage-specific exception. |
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41 """ |
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42 __bytes__ = _tobytes |
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43 |
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44 class RevlogError(StorageError): |
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45 __bytes__ = _tobytes |
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47 class FilteredIndexError(IndexError): |
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48 __bytes__ = _tobytes |
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49 |
7633 | 50 class LookupError(RevlogError, KeyError): |
51 def __init__(self, name, index, message): | |
52 self.name = name | |
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53 self.index = index |
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54 # this can't be called 'message' because at least some installs of |
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55 # Python 2.6+ complain about the 'message' property being deprecated |
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56 self.lookupmessage = message |
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57 if isinstance(name, bytes) and len(name) == 20: |
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58 from .node import short |
7633 | 59 name = short(name) |
60 RevlogError.__init__(self, '%s@%s: %s' % (index, name, message)) | |
61 | |
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62 def __bytes__(self): |
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63 return RevlogError.__bytes__(self) |
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64 |
7633 | 65 def __str__(self): |
66 return RevlogError.__str__(self) | |
7636 | 67 |
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68 class AmbiguousPrefixLookupError(LookupError): |
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69 pass |
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70 |
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71 class FilteredLookupError(LookupError): |
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72 pass |
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73 |
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74 class ManifestLookupError(LookupError): |
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75 pass |
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76 |
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77 class CommandError(Exception): |
7636 | 78 """Exception raised on errors in parsing the command line.""" |
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79 __bytes__ = _tobytes |
7637 | 80 |
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81 class InterventionRequired(Hint, Exception): |
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82 """Exception raised when a command requires human intervention.""" |
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83 __bytes__ = _tobytes |
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84 |
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85 class Abort(Hint, Exception): |
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86 """Raised if a command needs to print an error and exit.""" |
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87 __bytes__ = _tobytes |
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88 |
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89 class HookLoadError(Abort): |
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90 """raised when loading a hook fails, aborting an operation |
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91 |
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92 Exists to allow more specialized catching.""" |
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93 |
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94 class HookAbort(Abort): |
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95 """raised when a validation hook fails, aborting an operation |
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96 |
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97 Exists to allow more specialized catching.""" |
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98 |
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99 class ConfigError(Abort): |
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100 """Exception raised when parsing config files""" |
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101 |
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102 class UpdateAbort(Abort): |
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103 """Raised when an update is aborted for destination issue""" |
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104 |
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105 class MergeDestAbort(Abort): |
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106 """Raised when an update is aborted for destination issues""" |
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107 |
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108 class NoMergeDestAbort(MergeDestAbort): |
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109 """Raised when an update is aborted because there is nothing to merge""" |
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110 |
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111 class ManyMergeDestAbort(MergeDestAbort): |
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112 """Raised when an update is aborted because destination is ambiguous""" |
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113 |
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114 class ResponseExpected(Abort): |
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115 """Raised when an EOF is received for a prompt""" |
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116 def __init__(self): |
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117 from .i18n import _ |
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118 Abort.__init__(self, _('response expected')) |
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119 |
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120 class OutOfBandError(Hint, Exception): |
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121 """Exception raised when a remote repo reports failure""" |
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122 __bytes__ = _tobytes |
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123 |
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124 class ParseError(Hint, Exception): |
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125 """Raised when parsing config files and {rev,file}sets (msg[, pos])""" |
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126 __bytes__ = _tobytes |
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127 |
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128 class PatchError(Exception): |
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129 __bytes__ = _tobytes |
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130 |
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131 class UnknownIdentifier(ParseError): |
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132 """Exception raised when a {rev,file}set references an unknown identifier""" |
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133 |
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134 def __init__(self, function, symbols): |
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135 from .i18n import _ |
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136 ParseError.__init__(self, _("unknown identifier: %s") % function) |
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137 self.function = function |
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138 self.symbols = symbols |
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139 |
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140 class RepoError(Hint, Exception): |
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141 __bytes__ = _tobytes |
7637 | 142 |
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143 class RepoLookupError(RepoError): |
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144 pass |
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145 |
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146 class FilteredRepoLookupError(RepoLookupError): |
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147 pass |
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148 |
7637 | 149 class CapabilityError(RepoError): |
150 pass | |
7640 | 151 |
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152 class RequirementError(RepoError): |
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153 """Exception raised if .hg/requires has an unknown entry.""" |
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154 |
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155 class StdioError(IOError): |
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156 """Raised if I/O to stdout or stderr fails""" |
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157 |
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158 def __init__(self, err): |
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159 IOError.__init__(self, err.errno, err.strerror) |
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160 |
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161 # no __bytes__() because error message is derived from the standard IOError |
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162 |
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163 class UnsupportedMergeRecords(Abort): |
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164 def __init__(self, recordtypes): |
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165 from .i18n import _ |
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166 self.recordtypes = sorted(recordtypes) |
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167 s = ' '.join(self.recordtypes) |
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168 Abort.__init__( |
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169 self, _('unsupported merge state records: %s') % s, |
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170 hint=_('see https://mercurial-scm.org/wiki/MergeStateRecords for ' |
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171 'more information')) |
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172 |
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173 class UnknownVersion(Abort): |
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174 """generic exception for aborting from an encounter with an unknown version |
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175 """ |
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176 |
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177 def __init__(self, msg, hint=None, version=None): |
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178 self.version = version |
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179 super(UnknownVersion, self).__init__(msg, hint=hint) |
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180 |
7640 | 181 class LockError(IOError): |
182 def __init__(self, errno, strerror, filename, desc): | |
183 IOError.__init__(self, errno, strerror, filename) | |
184 self.desc = desc | |
185 | |
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186 # no __bytes__() because error message is derived from the standard IOError |
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187 |
7640 | 188 class LockHeld(LockError): |
189 def __init__(self, errno, filename, desc, locker): | |
190 LockError.__init__(self, errno, 'Lock held', filename, desc) | |
191 self.locker = locker | |
192 | |
193 class LockUnavailable(LockError): | |
194 pass | |
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195 |
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196 # LockError is for errors while acquiring the lock -- this is unrelated |
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197 class LockInheritanceContractViolation(RuntimeError): |
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198 __bytes__ = _tobytes |
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199 |
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200 class ResponseError(Exception): |
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201 """Raised to print an error with part of output and exit.""" |
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202 __bytes__ = _tobytes |
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203 |
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204 class UnknownCommand(Exception): |
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205 """Exception raised if command is not in the command table.""" |
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206 __bytes__ = _tobytes |
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207 |
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208 class AmbiguousCommand(Exception): |
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209 """Exception raised if command shortcut matches more than one command.""" |
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210 __bytes__ = _tobytes |
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211 |
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212 # derived from KeyboardInterrupt to simplify some breakout code |
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213 class SignalInterrupt(KeyboardInterrupt): |
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214 """Exception raised on SIGTERM and SIGHUP.""" |
7646 | 215 |
216 class SignatureError(Exception): | |
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217 __bytes__ = _tobytes |
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218 |
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219 class PushRaced(RuntimeError): |
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220 """An exception raised during unbundling that indicate a push race""" |
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221 __bytes__ = _tobytes |
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222 |
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223 class ProgrammingError(Hint, RuntimeError): |
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224 """Raised if a mercurial (core or extension) developer made a mistake""" |
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225 |
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226 def __init__(self, msg, *args, **kwargs): |
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227 # On Python 3, turn the message back into a string since this is |
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228 # an internal-only error that won't be printed except in a |
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229 # stack traces. |
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230 msg = pycompat.sysstr(msg) |
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231 super(ProgrammingError, self).__init__(msg, *args, **kwargs) |
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232 |
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233 __bytes__ = _tobytes |
30573 | 234 |
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235 class WdirUnsupported(Exception): |
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236 """An exception which is raised when 'wdir()' is not supported""" |
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237 __bytes__ = _tobytes |
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238 |
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239 # bundle2 related errors |
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240 class BundleValueError(ValueError): |
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241 """error raised when bundle2 cannot be processed""" |
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242 __bytes__ = _tobytes |
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243 |
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244 class BundleUnknownFeatureError(BundleValueError): |
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245 def __init__(self, parttype=None, params=(), values=()): |
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246 self.parttype = parttype |
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247 self.params = params |
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248 self.values = values |
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249 if self.parttype is None: |
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250 msg = 'Stream Parameter' |
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251 else: |
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252 msg = parttype |
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253 entries = self.params |
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254 if self.params and self.values: |
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255 assert len(self.params) == len(self.values) |
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256 entries = [] |
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257 for idx, par in enumerate(self.params): |
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258 val = self.values[idx] |
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259 if val is None: |
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260 entries.append(val) |
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261 else: |
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262 entries.append("%s=%r" % (par, pycompat.maybebytestr(val))) |
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263 if entries: |
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264 msg = '%s - %s' % (msg, ', '.join(entries)) |
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265 ValueError.__init__(self, msg) |
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266 |
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267 class ReadOnlyPartError(RuntimeError): |
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268 """error raised when code tries to alter a part being generated""" |
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269 __bytes__ = _tobytes |
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270 |
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271 class PushkeyFailed(Abort): |
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272 """error raised when a pushkey part failed to update a value""" |
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273 |
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274 def __init__(self, partid, namespace=None, key=None, new=None, old=None, |
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275 ret=None): |
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276 self.partid = partid |
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277 self.namespace = namespace |
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278 self.key = key |
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279 self.new = new |
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280 self.old = old |
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281 self.ret = ret |
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282 # no i18n expected to be processed into a better message |
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283 Abort.__init__(self, 'failed to update value for "%s/%s"' |
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284 % (namespace, key)) |
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285 |
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286 class CensoredNodeError(StorageError): |
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287 """error raised when content verification fails on a censored node |
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288 |
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289 Also contains the tombstone data substituted for the uncensored data. |
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290 """ |
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291 |
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292 def __init__(self, filename, node, tombstone): |
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293 from .node import short |
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294 StorageError.__init__(self, '%s:%s' % (filename, short(node))) |
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295 self.tombstone = tombstone |
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296 |
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297 class CensoredBaseError(StorageError): |
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298 """error raised when a delta is rejected because its base is censored |
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299 |
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300 A delta based on a censored revision must be formed as single patch |
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301 operation which replaces the entire base with new content. This ensures |
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302 the delta may be applied by clones which have not censored the base. |
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303 """ |
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304 |
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305 class InvalidBundleSpecification(Exception): |
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306 """error raised when a bundle specification is invalid. |
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307 |
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308 This is used for syntax errors as opposed to support errors. |
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309 """ |
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310 __bytes__ = _tobytes |
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311 |
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312 class UnsupportedBundleSpecification(Exception): |
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313 """error raised when a bundle specification is not supported.""" |
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314 __bytes__ = _tobytes |
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315 |
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316 class CorruptedState(Exception): |
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317 """error raised when a command is not able to read its state from file""" |
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318 __bytes__ = _tobytes |
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319 |
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320 class PeerTransportError(Abort): |
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321 """Transport-level I/O error when communicating with a peer repo.""" |
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322 |
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323 class InMemoryMergeConflictsError(Exception): |
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324 """Exception raised when merge conflicts arose during an in-memory merge.""" |
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325 __bytes__ = _tobytes |
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326 |
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327 class WireprotoCommandError(Exception): |
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328 """Represents an error during execution of a wire protocol command. |
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329 |
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330 Should only be thrown by wire protocol version 2 commands. |
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331 |
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332 The error is a formatter string and an optional iterable of arguments. |
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333 """ |
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334 def __init__(self, message, args=None): |
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335 self.message = message |
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336 self.messageargs = args |