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revlog: skeleton support for version 2 revlogs...
revlog: skeleton support for version 2 revlogs There are a number of improvements we want to make to revlogs that will require a new version - version 2. It is unclear what the full set of improvements will be or when we'll be done with them. What I do know is that the process will likely take longer than a single release, will require input from various stakeholders to evaluate changes, and will have many contentious debates and bikeshedding. It is unrealistic to develop revlog version 2 up front: there are just too many uncertainties that we won't know until things are implemented and experiments are run. Some changes will also be invasive and prone to bit rot, so sitting on dozens of patches is not practical. This commit introduces skeleton support for version 2 revlogs in a way that is flexible and not bound by backwards compatibility concerns. An experimental repo requirement for denoting revlog v2 has been added. The requirement string has a sub-version component to it. This will allow us to declare multiple requirements in the course of developing revlog v2. Whenever we change the in-development revlog v2 format, we can tweak the string, creating a new requirement and locking out old clients. This will allow us to make as many backwards incompatible changes and experiments to revlog v2 as we want. In other words, we can land code and make meaningful progress towards revlog v2 while still maintaining extreme format flexibility up until the point we freeze the format and remove the experimental labels. To enable the new repo requirement, you must supply an experimental and undocumented config option. But not just any boolean flag will do: you need to explicitly use a value that no sane person should ever type. This is an additional guard against enabling revlog v2 on an installation it shouldn't be enabled on. The specific scenario I'm trying to prevent is say a user with a 4.4 client with a frozen format enabling the option but then downgrading to 4.3 and accidentally creating repos with an outdated and unsupported repo format. Requiring a "challenge" string should prevent this. Because the format is not yet finalized and I don't want to take any chances, revlog v2's version is currently 0xDEAD. I figure squatting on a value we're likely never to use as an actual revlog version to mean "internal testing only" is acceptable. And "dead" is easily recognized as something meaningful. There is a bunch of cleanup that is needed before work on revlog v2 begins in earnest. I plan on doing that work once this patch is accepted and we're comfortable with the idea of starting down this path.

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pylintrc
313 lines | 9.0 KiB | text/plain | TextLexer
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 # lint Python modules using external checkers.
Mads Kiilerich
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r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 # This is the main checker controlling the other ones and the reports
# generation. It is itself both a raw checker and an astng checker in order
# to:
# * handle message activation / deactivation at the module level
# * handle some basic but necessary stats'data (number of classes, methods...)
Mads Kiilerich
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r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 [MASTER]
# Specify a configuration file.
#rcfile=
# Python code to execute, usually for sys.path manipulation such as
# pygtk.require().
#init-hook=
# Profiled execution.
profile=no
# Add <file or directory> to the black list. It should be a base name, not a
# path. You may set this option multiple times.
ignore=CVS
# Pickle collected data for later comparisons.
persistent=yes
# Set the cache size for astng objects.
cache-size=500
# List of plugins (as comma separated values of python modules names) to load,
# usually to register additional checkers.
load-plugins=
[MESSAGES CONTROL]
# Enable only checker(s) with the given id(s). This option conflicts with the
# disable-checker option
#enable-checker=
# Enable all checker(s) except those with the given id(s). This option
# conflicts with the enable-checker option
#disable-checker=
# Enable all messages in the listed categories (IRCWEF).
#enable-msg-cat=
# Disable all messages in the listed categories (IRCWEF).
disable-msg-cat=I
# Enable the message(s) with the given id(s).
#enable-msg=
# Disable the message(s) with the given id(s).
# W0704: except: pass
# C0111: missing docstring
# W0403: for the time being absolute imports don't play nice with demandimport
disable-msg=W0704,C0111,W0403
[REPORTS]
# Set the output format. Available formats are text, parseable, colorized, msvs
# (visual studio) and html
output-format=text
# Include message's id in output
include-ids=yes
# Put messages in a separate file for each module / package specified on the
# command line instead of printing them on stdout. Reports (if any) will be
# written in a file name "pylint_global.[txt|html]".
files-output=no
# Tells whether to display a full report or only the messages
reports=yes
# Python expression which should return a note less than 10 (10 is the highest
# note). You have access to the variables errors warning, statement which
# respectively contain the number of errors / warnings messages and the total
# number of statements analyzed. This is used by the global evaluation report
# (R0004).
evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10)
# Add a comment according to your evaluation note. This is used by the global
# evaluation report (R0004).
comment=no
# Enable the report(s) with the given id(s).
#enable-report=
# Disable the report(s) with the given id(s).
#disable-report=
# try to find bugs in the code using type inference
Mads Kiilerich
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r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 [TYPECHECK]
# Tells whether missing members accessed in mixin class should be ignored. A
# mixin class is detected if its name ends with "mixin" (case insensitive).
ignore-mixin-members=yes
# List of classes names for which member attributes should not be checked
# (useful for classes with attributes dynamically set).
ignored-classes=SQLObject
# When zope mode is activated, add a predefined set of Zope acquired attributes
# to generated-members.
zope=no
# List of members which are set dynamically and missed by pylint inference
# system, and so shouldn't trigger E0201 when accessed.
generated-members=REQUEST,acl_users,aq_parent
# checks for
# * unused variables / imports
# * undefined variables
# * redefinition of variable from builtins or from an outer scope
# * use of variable before assignment
Mads Kiilerich
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r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 [VARIABLES]
# Tells whether we should check for unused import in __init__ files.
init-import=yes
# A regular expression matching names used for dummy variables (i.e. not used).
dummy-variables-rgx=dummy
# List of additional names supposed to be defined in builtins. Remember that
# you should avoid to define new builtins when possible.
additional-builtins=
# checks for :
# * doc strings
# * modules / classes / functions / methods / arguments / variables name
# * number of arguments, local variables, branches, returns and statements in
# functions, methods
# * required module attributes
# * dangerous default values as arguments
# * redefinition of function / method / class
# * uses of the global statement
Mads Kiilerich
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r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 [BASIC]
# Required attributes for module, separated by a comma
required-attributes=
# Regular expression which should only match functions or classes name which do
# not require a docstring
no-docstring-rgx=__.*__
# Regular expression which should only match correct module names
module-rgx=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$
# Regular expression which should only match correct module level names
const-rgx=(([a-zA-Z_][a-zA-Z0-9_]*)|(__.*__))$
# Regular expression which should only match correct class names
class-rgx=[a-zA-Z_][a-zA-Z0-9]+$
# Regular expression which should only match correct function names
function-rgx=[a-z_][a-z0-9_]{2,30}$
# Regular expression which should only match correct method names
method-rgx=[a-z_][a-z0-9_]{2,30}$
# Regular expression which should only match correct instance attribute names
attr-rgx=[a-z_][a-z0-9_]{1,30}$
# Regular expression which should only match correct argument names
argument-rgx=[a-z_][a-z0-9_]{0,30}$
# Regular expression which should only match correct variable names
variable-rgx=[a-z_][a-z0-9_]{0,30}$
# Regular expression which should only match correct list comprehension /
# generator expression variable names
inlinevar-rgx=[A-Za-z_][A-Za-z0-9_]*$
# Good variable names which should always be accepted, separated by a comma
good-names=i,j,k,ex,Run,_,ui,c,fn,f,fd,l
# Bad variable names which should always be refused, separated by a comma
bad-names=foo,bar,baz,toto,tutu,tata
# List of builtins function names that should not be used, separated by a comma
#bad-functions=map,filter,apply,input
bad-functions=map,filter,apply,input
# checks for
# * external modules dependencies
# * relative / wildcard imports
# * cyclic imports
# * uses of deprecated modules
Mads Kiilerich
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r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 [IMPORTS]
# Deprecated modules which should not be used, separated by a comma
Benoit Boissinot
pylintrc: string isn't deprecated, only some of its methods
r10403 deprecated-modules=regsub,TERMIOS,Bastion,rexec
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393
# Create a graph of every (i.e. internal and external) dependencies in the
# given file (report R0402 must not be disabled)
import-graph=
# Create a graph of external dependencies in the given file (report R0402 must
# not be disabled)
ext-import-graph=
# Create a graph of internal dependencies in the given file (report R0402 must
# not be disabled)
int-import-graph=
# checks for sign of poor/misdesign:
# * number of methods, attributes, local variables...
# * size, complexity of functions, methods
Mads Kiilerich
codingstyle: remove trailing spaces in various text files...
r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 [DESIGN]
# Maximum number of arguments for function / method
max-args=5
# Maximum number of locals for function / method body
max-locals=15
# Maximum number of return / yield for function / method body
max-returns=6
# Maximum number of branch for function / method body
max-branchs=12
# Maximum number of statements in function / method body
max-statements=50
# Maximum number of parents for a class (see R0901).
max-parents=7
# Maximum number of attributes for a class (see R0902).
max-attributes=7
# Minimum number of public methods for a class (see R0903).
min-public-methods=2
# Maximum number of public methods for a class (see R0904).
max-public-methods=20
# checks for :
# * methods without self as first argument
# * overridden methods signature
# * access only to existent members via self
# * attributes not defined in the __init__ method
# * supported interfaces implementation
# * unreachable code
Mads Kiilerich
codingstyle: remove trailing spaces in various text files...
r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 [CLASSES]
# List of interface methods to ignore, separated by a comma. This is used for
# instance to not check methods defines in Zope's Interface base class.
ignore-iface-methods=isImplementedBy,deferred,extends,names,namesAndDescriptions,queryDescriptionFor,getBases,getDescriptionFor,getDoc,getName,getTaggedValue,getTaggedValueTags,isEqualOrExtendedBy,setTaggedValue,isImplementedByInstancesOf,adaptWith,is_implemented_by
# List of method names used to declare (i.e. assign) instance attributes.
defining-attr-methods=__init__,__new__,setUp
# checks for :
# * unauthorized constructions
# * strict indentation
# * line length
# * use of <> instead of !=
Mads Kiilerich
codingstyle: remove trailing spaces in various text files...
r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 [FORMAT]
# Maximum number of characters on a single line.
max-line-length=80
# Maximum number of lines in a module
max-module-lines=1000
# String used as indentation unit. This is usually " " (4 spaces) or "\t" (1
# tab).
indent-string=' '
# checks for:
# * warning notes in the code like FIXME, XXX
# * PEP 263: source code with non ascii character but no encoding declaration
Mads Kiilerich
codingstyle: remove trailing spaces in various text files...
r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 [MISCELLANEOUS]
# List of note tags to take in consideration, separated by a comma.
notes=FIXME,XXX,TODO
# checks for similarities and duplicated code. This computation may be
# memory / CPU intensive, so you should disable it if you experiments some
# problems.
Mads Kiilerich
codingstyle: remove trailing spaces in various text files...
r19023 #
Benoit Boissinot
add pylintrc with some mercurial specific configuration
r10393 [SIMILARITIES]
# Minimum lines number of a similarity.
min-similarity-lines=4
# Ignore comments when computing similarities.
ignore-comments=yes
# Ignore docstrings when computing similarities.
ignore-docstrings=yes