author | Pierre-Yves David <pierre-yves.david@octobus.net> |
Tue, 06 Apr 2021 10:38:27 +0200 | |
changeset 46897 | 1c52d77d7861 |
parent 44728 | 59ad165f6cdb |
child 48875 | 6000f5b25c9b |
permissions | -rw-r--r-- |
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from __future__ import absolute_import |
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from .i18n import _ |
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from . import ( |
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pycompat, |
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registrar, |
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templatekw, |
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util, |
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) |
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def tolist(val): |
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""" |
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a convenience method to return an empty list instead of None |
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""" |
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if val is None: |
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return [] |
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else: |
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return [val] |
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class namespaces(object): |
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"""provides an interface to register and operate on multiple namespaces. See |
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the namespace class below for details on the namespace object. |
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""" |
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_names_version = 0 |
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def __init__(self): |
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self._names = util.sortdict() |
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columns = templatekw.getlogcolumns() |
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# we need current mercurial named objects (bookmarks, tags, and |
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# branches) to be initialized somewhere, so that place is here |
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bmknames = lambda repo: repo._bookmarks.keys() |
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bmknamemap = lambda repo, name: tolist(repo._bookmarks.get(name)) |
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bmknodemap = lambda repo, node: repo.nodebookmarks(node) |
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n = namespace( |
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b"bookmarks", |
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templatename=b"bookmark", |
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logfmt=columns[b'bookmark'], |
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listnames=bmknames, |
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namemap=bmknamemap, |
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nodemap=bmknodemap, |
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builtin=True, |
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) |
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self.addnamespace(n) |
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tagnames = lambda repo: [t for t, n in repo.tagslist()] |
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tagnamemap = lambda repo, name: tolist(repo._tagscache.tags.get(name)) |
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tagnodemap = lambda repo, node: repo.nodetags(node) |
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n = namespace( |
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b"tags", |
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templatename=b"tag", |
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logfmt=columns[b'tag'], |
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listnames=tagnames, |
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namemap=tagnamemap, |
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nodemap=tagnodemap, |
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deprecated={b'tip'}, |
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builtin=True, |
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) |
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self.addnamespace(n) |
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bnames = lambda repo: repo.branchmap().keys() |
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bnamemap = lambda repo, name: tolist(repo.branchtip(name, True)) |
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bnodemap = lambda repo, node: [repo[node].branch()] |
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n = namespace( |
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b"branches", |
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templatename=b"branch", |
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logfmt=columns[b'branch'], |
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listnames=bnames, |
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namemap=bnamemap, |
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nodemap=bnodemap, |
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builtin=True, |
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) |
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self.addnamespace(n) |
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def __getitem__(self, namespace): |
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"""returns the namespace object""" |
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return self._names[namespace] |
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def __iter__(self): |
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return self._names.__iter__() |
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def get(self, namespace, default=None): |
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return self._names.get(namespace, default) |
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def items(self): |
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return pycompat.iteritems(self._names) |
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iteritems = items |
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def addnamespace(self, namespace, order=None): |
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"""register a namespace |
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namespace: the name to be registered (in plural form) |
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order: optional argument to specify the order of namespaces |
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(e.g. 'branches' should be listed before 'bookmarks') |
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""" |
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if order is not None: |
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self._names.insert(order, namespace.name, namespace) |
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else: |
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self._names[namespace.name] = namespace |
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# we only generate a template keyword if one does not already exist |
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if namespace.name not in templatekw.keywords: |
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templatekeyword = registrar.templatekeyword(templatekw.keywords) |
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@templatekeyword(namespace.name, requires={b'repo', b'ctx'}) |
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def generatekw(context, mapping): |
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return templatekw.shownames(context, mapping, namespace.name) |
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def singlenode(self, repo, name): |
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""" |
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Return the 'best' node for the given name. What's best is defined |
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by the namespace's singlenode() function. The first match returned by |
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a namespace in the defined precedence order is used. |
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120 |
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Raises a KeyError if there is no such node. |
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""" |
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for ns, v in pycompat.iteritems(self._names): |
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n = v.singlenode(repo, name) |
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if n: |
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return n |
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raise KeyError(_(b'no such name: %s') % name) |
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129 |
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class namespace(object): |
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"""provides an interface to a namespace |
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Namespaces are basically generic many-to-many mapping between some |
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134 |
(namespaced) names and nodes. The goal here is to control the pollution of |
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jamming things into tags or bookmarks (in extension-land) and to simplify |
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internal bits of mercurial: log output, tab completion, etc. |
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137 |
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138 |
More precisely, we define a mapping of names to nodes, and a mapping from |
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nodes to names. Each mapping returns a list. |
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140 |
|
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141 |
Furthermore, each name mapping will be passed a name to lookup which might |
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142 |
not be in its domain. In this case, each method should return an empty list |
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and not raise an error. |
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144 |
|
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This namespace object will define the properties we need: |
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'name': the namespace (plural form) |
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'templatename': name to use for templating (usually the singular form |
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of the plural namespace name) |
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'listnames': list of all names in the namespace (usually the keys of a |
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150 |
dictionary) |
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'namemap': function that takes a name and returns a list of nodes |
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'nodemap': function that takes a node and returns a list of names |
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'deprecated': set of names to be masked for ordinary use |
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'builtin': bool indicating if this namespace is supported by core |
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155 |
Mercurial. |
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156 |
""" |
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157 |
|
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158 |
def __init__( |
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self, |
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160 |
name, |
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161 |
templatename=None, |
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162 |
logname=None, |
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163 |
colorname=None, |
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164 |
logfmt=None, |
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165 |
listnames=None, |
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166 |
namemap=None, |
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167 |
nodemap=None, |
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168 |
deprecated=None, |
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169 |
builtin=False, |
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singlenode=None, |
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171 |
): |
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172 |
"""create a namespace |
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173 |
|
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174 |
name: the namespace to be registered (in plural form) |
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175 |
templatename: the name to use for templating |
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176 |
logname: the name to use for log output; if not specified templatename |
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177 |
is used |
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178 |
colorname: the name to use for colored log output; if not specified |
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179 |
logname is used |
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logfmt: the format to use for (i18n-ed) log output; if not specified |
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181 |
it is composed from logname |
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182 |
listnames: function to list all names |
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183 |
namemap: function that inputs a name, output node(s) |
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184 |
nodemap: function that inputs a node, output name(s) |
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deprecated: set of names to be masked for ordinary use |
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186 |
builtin: whether namespace is implemented by core Mercurial |
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singlenode: function that inputs a name, output best node (or None) |
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188 |
""" |
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189 |
self.name = name |
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self.templatename = templatename |
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self.logname = logname |
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self.colorname = colorname |
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self.logfmt = logfmt |
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self.listnames = listnames |
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self.namemap = namemap |
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self.nodemap = nodemap |
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if singlenode: |
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self.singlenode = singlenode |
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|
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# if logname is not specified, use the template name as backup |
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if self.logname is None: |
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self.logname = self.templatename |
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# if colorname is not specified, just use the logname as a backup |
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if self.colorname is None: |
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self.colorname = self.logname |
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# if logfmt is not specified, compose it from logname as backup |
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if self.logfmt is None: |
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# i18n: column positioning for "hg log" |
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self.logfmt = (b"%s:" % self.logname).ljust(13) + b"%s\n" |
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if deprecated is None: |
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self.deprecated = set() |
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else: |
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self.deprecated = deprecated |
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self.builtin = builtin |
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def names(self, repo, node): |
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"""method that returns a (sorted) list of names in a namespace that |
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match a given node""" |
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return sorted(self.nodemap(repo, node)) |
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def nodes(self, repo, name): |
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"""method that returns a list of nodes in a namespace that |
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match a given name. |
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""" |
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return sorted(self.namemap(repo, name)) |
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def singlenode(self, repo, name): |
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"""returns the best node for the given name |
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By default, the best node is the node from nodes() with the highest |
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revision number. It can be overriden by the namespace.""" |
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n = self.namemap(repo, name) |
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if n: |
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# return max revision number |
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if len(n) > 1: |
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cl = repo.changelog |
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maxrev = max(cl.rev(node) for node in n) |
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return cl.node(maxrev) |
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return n[0] |
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return None |