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comparison mercurial/namespaces.py @ 23553:7cebb6a8c75f

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namespaces: introduce a generic way to map between names and nodes This patch begins the work to provide a way to register a namespace to handle 'names'. Benefits of this would be, - improved templating: This would provide {name} which could output any branch, bookmark, tag, or any extension registered namespace all without having the extension doing any extra work - improved tab completion: Since this provides a single source of all 'names', tab completion would not need to know of each namespace - changeset lookup: Similar to before, a unified place to get all 'names' will allow finding changesets without any extension code having to reimplement this Also, d226fe36e362 has shown us that for internal code which expects a certain type of method or behavior, we should provide an easy way for extensions to check this behavior.
author Sean Farley <sean.michael.farley@gmail.com>
date Sun, 14 Dec 2014 12:29:28 -0800
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children 75f9643cab1b
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23552:72319005f5fb 23553:7cebb6a8c75f
1 from mercurial import util
2
3 class namespaces(object):
4 """
5 provides an interface to register a generic many-to-many mapping between
6 some (namespaced) names and nodes. The goal here is to control the
7 pollution of jamming things into tags or bookmarks (in extension-land) and
8 to simplify internal bits of mercurial: log output, tab completion, etc.
9
10 More precisely, we define a list of names (the namespace) and a mapping of
11 names to nodes. This name mapping returns a list of nodes.
12
13 Furthermore, each name mapping will be passed a name to lookup which might
14 not be in its domain. In this case, each method should return an empty list
15 and not raise an error.
16
17 We'll have a dictionary '_names' where each key is a namespace and
18 its value is a dictionary of functions:
19 'namemap': function that takes a name and returns a list of nodes
20 """
21
22 _names_version = 0
23
24 def __init__(self):
25 self._names = util.sortdict()