author | Matt Harbison <matt_harbison@yahoo.com> |
Thu, 27 Dec 2018 21:26:17 -0500 | |
changeset 4328 | 392f1a6a0763 |
parent 4327 | 9521698a9894 |
child 4329 | 798298fda3be |
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# Copyright 2012 Logilab SA <contact@logilab.fr> |
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# Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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# Octobus <contact@octobus.net> |
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# |
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# This software may be used and distributed according to the terms of the |
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# GNU General Public License version 2 or any later version. |
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##################################################################### |
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### Extension helper ### |
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##################################################################### |
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from mercurial import ( |
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commands, |
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error, |
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extensions, |
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fileset as filesetmod, |
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registrar, |
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templatekw as templatekwmod, |
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) |
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class exthelper(object): |
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"""Helper for modular extension setup |
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A single helper should be instantiated for each extension. Helper |
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methods are then used as decorators for various purpose. |
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All decorators return the original function and may be chained. |
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""" |
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def __init__(self): |
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self._uipopulatecallables = [] |
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self._uicallables = [] |
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self._extcallables = [] |
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self._repocallables = [] |
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self._filesetsymbols = [] |
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self._templatekws = [] |
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self._commandwrappers = [] |
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self._extcommandwrappers = [] |
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self._functionwrappers = [] |
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self._duckpunchers = [] |
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self.cmdtable = {} |
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self.command = registrar.command(self.cmdtable) |
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if '^init' in commands.table: |
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olddoregister = self.command._doregister |
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def _newdoregister(self, name, *args, **kwargs): |
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if kwargs.pop('helpbasic', False): |
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name = '^' + name |
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return olddoregister(self, name, *args, **kwargs) |
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self.command._doregister = _newdoregister |
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self.configtable = {} |
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self.configitem = registrar.configitem(self.configtable) |
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self.revsetpredicate = registrar.revsetpredicate() |
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def merge(self, other): |
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self._uicallables.extend(other._uicallables) |
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self._uipopulatecallables.extend(other._uipopulatecallables) |
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self._extcallables.extend(other._extcallables) |
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self._repocallables.extend(other._repocallables) |
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self.revsetpredicate._table.update(other.revsetpredicate._table) |
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self._filesetsymbols.extend(other._filesetsymbols) |
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self._templatekws.extend(other._templatekws) |
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self._commandwrappers.extend(other._commandwrappers) |
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self._extcommandwrappers.extend(other._extcommandwrappers) |
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self._functionwrappers.extend(other._functionwrappers) |
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self._duckpunchers.extend(other._duckpunchers) |
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self.cmdtable.update(other.cmdtable) |
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for section, items in other.configtable.iteritems(): |
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if section in self.configtable: |
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self.configtable[section].update(items) |
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else: |
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self.configtable[section] = items |
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def finaluisetup(self, ui): |
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"""Method to be used as the extension uisetup |
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The following operations belong here: |
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- Changes to ui.__class__ . The ui object that will be used to run the |
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command has not yet been created. Changes made here will affect ui |
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objects created after this, and in particular the ui that will be |
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passed to runcommand |
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- Command wraps (extensions.wrapcommand) |
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- Changes that need to be visible to other extensions: because |
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initialization occurs in phases (all extensions run uisetup, then all |
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run extsetup), a change made here will be visible to other extensions |
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during extsetup |
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- Monkeypatch or wrap function (extensions.wrapfunction) of dispatch |
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module members |
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- Setup of pre-* and post-* hooks |
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- pushkey setup |
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""" |
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for cont, funcname, func in self._duckpunchers: |
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setattr(cont, funcname, func) |
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for command, wrapper, opts in self._commandwrappers: |
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entry = extensions.wrapcommand(commands.table, command, wrapper) |
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if opts: |
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for opt in opts: |
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entry[1].append(opt) |
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for cont, funcname, wrapper in self._functionwrappers: |
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extensions.wrapfunction(cont, funcname, wrapper) |
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for c in self._uicallables: |
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c(ui) |
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def finaluipopulate(self, ui): |
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"""Method to be used as the extension uipopulate |
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108 |
|
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109 |
This is called once per ui instance to: |
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110 |
|
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111 |
- Set up additional ui members |
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112 |
- Update configuration by ``ui.setconfig()`` |
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113 |
- Extend the class dynamically |
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114 |
""" |
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115 |
for c in self._uipopulatecallables: |
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116 |
c(ui) |
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117 |
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def finalextsetup(self, ui): |
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"""Method to be used as a the extension extsetup |
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The following operations belong here: |
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122 |
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- Changes depending on the status of other extensions. (if |
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extensions.find('mq')) |
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- Add a global option to all commands |
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""" |
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knownexts = {} |
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128 |
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filesetpredicate = registrar.filesetpredicate() |
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for name, symbol in self._filesetsymbols: |
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filesetpredicate(name)(symbol) |
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# TODO: Figure out the calling extension name |
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filesetmod.loadpredicate(ui, 'exthelper', filesetpredicate) |
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134 |
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templatekeyword = registrar.templatekeyword() |
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for name, kw, requires in self._templatekws: |
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if requires is not None: |
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templatekeyword(name, requires=requires)(kw) |
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else: |
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140 |
templatekeyword(name)(kw) |
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templatekwmod.loadkeyword(ui, 'evolve', templatekeyword) |
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142 |
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for ext, command, wrapper, opts in self._extcommandwrappers: |
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if ext not in knownexts: |
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145 |
try: |
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e = extensions.find(ext) |
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except KeyError: |
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# Extension isn't enabled, so don't bother trying to wrap |
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# it. |
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150 |
continue |
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knownexts[ext] = e.cmdtable |
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entry = extensions.wrapcommand(knownexts[ext], command, wrapper) |
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if opts: |
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for opt in opts: |
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entry[1].append(opt) |
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156 |
|
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for c in self._extcallables: |
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158 |
c(ui) |
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159 |
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160 |
def finalreposetup(self, ui, repo): |
1667 | 161 |
"""Method to be used as the extension reposetup |
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162 |
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163 |
The following operations belong here: |
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164 |
|
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165 |
- All hooks but pre-* and post-* |
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166 |
- Modify configuration variables |
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167 |
- Changes to repo.__class__, repo.dirstate.__class__ |
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168 |
""" |
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169 |
for c in self._repocallables: |
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170 |
c(ui, repo) |
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171 |
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172 |
def uisetup(self, call): |
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173 |
"""Decorated function will be executed during uisetup |
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174 |
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175 |
example:: |
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176 |
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177 |
@eh.uisetup |
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178 |
def setupbabar(ui): |
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179 |
print 'this is uisetup!' |
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180 |
""" |
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181 |
self._uicallables.append(call) |
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182 |
return call |
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183 |
|
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184 |
def uipopulate(self, call): |
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185 |
"""Decorated function will be executed during uipopulate |
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186 |
|
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187 |
example:: |
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188 |
|
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189 |
@eh.uipopulate |
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190 |
def setupfoo(ui): |
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191 |
print 'this is uipopulate!' |
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192 |
""" |
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193 |
self._uipopulatecallables.append(call) |
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194 |
return call |
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195 |
|
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def extsetup(self, call): |
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197 |
"""Decorated function will be executed during extsetup |
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198 |
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199 |
example:: |
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200 |
|
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201 |
@eh.extsetup |
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202 |
def setupcelestine(ui): |
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203 |
print 'this is extsetup!' |
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204 |
""" |
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205 |
self._extcallables.append(call) |
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206 |
return call |
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207 |
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208 |
def reposetup(self, call): |
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209 |
"""Decorated function will be executed during reposetup |
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210 |
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211 |
example:: |
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212 |
|
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213 |
@eh.reposetup |
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214 |
def setupzephir(ui, repo): |
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215 |
print 'this is reposetup!' |
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216 |
""" |
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217 |
self._repocallables.append(call) |
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218 |
return call |
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219 |
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def fileset(self, symbolname): |
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"""Decorated function is a fileset symbol |
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The name of the symbol must be given as the decorator argument. |
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The symbol is added during `extsetup`. |
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example:: |
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@eh.fileset('lfs()') |
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def filesetbabar(mctx, x): |
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return mctx.predicate(...) |
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""" |
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def dec(symbol): |
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self._filesetsymbols.append((symbolname, symbol)) |
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return symbol |
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return dec |
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def templatekw(self, keywordname, requires=None): |
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"""Decorated function is a template keyword |
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The name of the keyword must be given as the decorator argument. |
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The symbol is added during `extsetup`. |
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example:: |
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@eh.templatekw('babar') |
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def kwbabar(ctx): |
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return 'babar' |
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""" |
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def dec(keyword): |
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self._templatekws.append((keywordname, keyword, requires)) |
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return keyword |
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return dec |
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def wrapcommand(self, command, extension=None, opts=None): |
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"""Decorated function is a command wrapper |
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The name of the command must be given as the decorator argument. |
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The wrapping is installed during `uisetup`. |
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If the second option `extension` argument is provided, the wrapping |
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will be applied in the extension commandtable. This argument must be a |
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string that will be searched using `extension.find` if not found and |
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Abort error is raised. If the wrapping applies to an extension, it is |
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installed during `extsetup`. |
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example:: |
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@eh.wrapcommand('summary') |
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def wrapsummary(orig, ui, repo, *args, **kwargs): |
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ui.note('Barry!') |
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return orig(ui, repo, *args, **kwargs) |
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The `opts` argument allows specifying a list of tuples for additional |
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arguments for the command. See ``mercurial.fancyopts.fancyopts()`` for |
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the format of the tuple. |
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""" |
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if opts is None: |
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opts = [] |
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else: |
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for opt in opts: |
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if not isinstance(opt, tuple): |
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raise error.ProgrammingError('opts must be list of tuples') |
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if len(opt) not in (4, 5): |
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msg = 'each opt tuple must contain 4 or 5 values' |
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raise error.ProgrammingError(msg) |
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def dec(wrapper): |
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if extension is None: |
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self._commandwrappers.append((command, wrapper, opts)) |
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else: |
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self._extcommandwrappers.append((extension, command, wrapper, |
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opts)) |
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return wrapper |
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return dec |
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def wrapfunction(self, container, funcname): |
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"""Decorated function is a function wrapper |
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This function takes two arguments, the container and the name of the |
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function to wrap. The wrapping is performed during `uisetup`. |
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(there is no extension support) |
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example:: |
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@eh.function(discovery, 'checkheads') |
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def wrapfunction(orig, *args, **kwargs): |
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ui.note('His head smashed in and his heart cut out') |
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return orig(*args, **kwargs) |
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""" |
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def dec(wrapper): |
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self._functionwrappers.append((container, funcname, wrapper)) |
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return wrapper |
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return dec |
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def addattr(self, container, funcname): |
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"""Decorated function is to be added to the container |
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This function takes two arguments, the container and the name of the |
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function to wrap. The wrapping is performed during `uisetup`. |
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|
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example:: |
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@eh.function(context.changectx, 'babar') |
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def babar(ctx): |
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return 'babar' in ctx.description |
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""" |
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def dec(func): |
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self._duckpunchers.append((container, funcname, func)) |
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return func |
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return dec |