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bundle2: add an 'idx' argument to the 'b2partsgenerator'

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This argument let extensions control in what order bundle2 part are generated
client side during a push. This is useful to ensure the transaction is in a
proper state before some actions or hooks happens.
This commit is contained in:
Pierre-Yves David 2015-04-14 14:07:35 -04:00
parent 8561ae6b39
commit ff78e38dd6
1 changed files with 5 additions and 2 deletions
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7
mercurial/exchange.py
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@ -427,7 +427,7 @@ b2partsgenorder = []
# This exists to help extensions wrap steps if necessary
b2partsgenmapping = {}
def b2partsgenerator(stepname):
def b2partsgenerator(stepname, idx=None):
"""decorator for function generating bundle2 part
The function is added to the step -> function mapping and appended to the
@ -439,7 +439,10 @@ def b2partsgenerator(stepname):
def dec(func):
assert stepname not in b2partsgenmapping
b2partsgenmapping[stepname] = func
b2partsgenorder.append(stepname)
if idx is None:
b2partsgenorder.append(stepname)
else:
b2partsgenorder.insert(idx, stepname)
return func
return dec