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97c188373c
Summary: Our extensions dependecies are getting tricky. Let's make it right. (the logic still need to be tested - it worked on one very simple example so far). Test Plan: no tests yet Reviewers: pyd, lcharignon, rmcelroy Reviewed By: rmcelroy Subscribers: lcharignon, #sourcecontrol Differential Revision: https://phabricator.fb.com/D2710943 Signature: t1:2710943:1449881799:16abe49529aa79df7d6ebe84a0bae0c0970b419a
69 lines
1.8 KiB
Python
69 lines
1.8 KiB
Python
# extorder.py - dependencies for extensions
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#
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# Copyright 2015 Facebook, Inc.
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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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Loading order for extensions.
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In the extorder section of your hgrc you can define order of extension loading.
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For example:
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[extorder]
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extension1 = extension3, extension4
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extension2 = extension1
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This will cause the extension1 to be loaded after 3 and 4. Also extension2 will
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be loaded after extension1.
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Also there are two special configs in this section: 'preferlast' and
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'preferfirst'. Those are lists of extensions which prefer to be loaded first or
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last. But these are not guaranteed -- normal dependencies have higher priority.
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Please not that this extension modifies only order of loading extensions. It
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will not load them for you
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"""
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from mercurial import extensions
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from mercurial import error
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testedwith = 'internal'
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def uisetup(ui):
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deps = {}
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preferlast = []
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preferfirst = []
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for item, _v in ui.configitems('extorder'):
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val = ui.configlist('extorder', item)
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if item == 'preferlast':
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preferlast.extend(val)
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elif item == 'preferfirst':
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preferfirst.extend(val)
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else:
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deps[item] = val
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exts = list(extensions._order)
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for e in preferfirst + preferlast:
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exts.remove(e)
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unvisited = preferfirst + exts + preferlast
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temp = set()
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order = list()
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def visit(n):
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if n in temp:
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raise error.Abort("extorder: conflicting extension order")
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elif n in unvisited:
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temp.add(n)
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for m in deps.get(n, []):
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visit(m)
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unvisited.remove(n)
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temp.remove(n)
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order.append(n)
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while len(unvisited) > 0:
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visit(unvisited[0])
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extensions._order = order
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