mergestate: determine if active without looking for state files on disk
I couldn't think of a reason that we need to check state files on disk
to determine if a merge is active. I could imagine them being for
there for detecting broken state files that would then be cleaned up
by some later command, but we always delete the entire `.hg/merge/`
tree, so that doesn't seem to be it.
The checks were added in
4e932dc5c113 (resolve: abort when not
applicable (BC), 2014-04-18). Perhaps there were needed for that and
then made obsolete by
6062593d8b06 (resolve: don't abort resolve -l
even when no merge is in progress, 2014-05-23).
The reason I want to delete the checks is that I think `ms =
mergestate.read(repo); ms.active() and ms.local` should be a valid
pattern, but it crashes when the merge state file is an empty file if
we consider mere presence of the file as "active".
Differential Revision: https://phab.mercurial-scm.org/D8118
$ cat > correct.py <<NO_CHECK_EOF
> def toto(arg1, arg2):
> del arg2
> return (5 + 6, 9)
> NO_CHECK_EOF
$ cat > wrong.py <<NO_CHECK_EOF
> def toto( arg1, arg2):
> del(arg2)
> return ( 5+6, 9)
> def badwrap():
> return 1 + \\
> 2
> NO_CHECK_EOF
$ cat > quote.py <<NO_CHECK_EOF
> # let's use quote in comments
> (''' ( 4x5 )
> but """\\''' and finally''',
> """let's fool checkpatch""", '1+2',
> '"""', 42+1, """and
> ( 4-1 ) """, "( 1+1 )\" and ")
> a, '\\\\\\\\', "\\\\\\" x-2", "c-1"
> NO_CHECK_EOF
$ cat > classstyle.py <<NO_CHECK_EOF
> class newstyle_class(object):
> pass
>
> class oldstyle_class:
> pass
>
> class empty():
> pass
>
> no_class = 1:
> pass
> NO_CHECK_EOF
$ check_code="$TESTDIR"/../contrib/check-code.py
$ "$check_code" ./wrong.py ./correct.py ./quote.py ./classstyle.py
./wrong.py:1:
> def toto( arg1, arg2):
gratuitous whitespace in () or []
./wrong.py:2:
> del(arg2)
Python keyword is not a function
./wrong.py:3:
> return ( 5+6, 9)
gratuitous whitespace in () or []
missing whitespace in expression
./wrong.py:5:
> return 1 + \
Use () to wrap long lines in Python, not \
./quote.py:5:
> '"""', 42+1, """and
missing whitespace in expression
./classstyle.py:4:
> class oldstyle_class:
old-style class, use class foo(object)
./classstyle.py:7:
> class empty():
class foo() creates old style object, use class foo(object)
[1]
$ cat > python3-compat.py << NO_CHECK_EOF
> foo <> bar
> reduce(lambda a, b: a + b, [1, 2, 3, 4])
> dict(key=value)
> NO_CHECK_EOF
$ "$check_code" python3-compat.py
python3-compat.py:1:
> foo <> bar
<> operator is not available in Python 3+, use !=
python3-compat.py:2:
> reduce(lambda a, b: a + b, [1, 2, 3, 4])
reduce is not available in Python 3+
python3-compat.py:3:
> dict(key=value)
dict() is different in Py2 and 3 and is slower than {}
[1]
$ cat > foo.c <<NO_CHECK_EOF
> void narf() {
> strcpy(foo, bar);
> // strcpy_s is okay, but this comment is not
> strcpy_s(foo, bar);
> }
> NO_CHECK_EOF
$ "$check_code" ./foo.c
./foo.c:2:
> strcpy(foo, bar);
don't use strcpy, use strlcpy or memcpy
./foo.c:3:
> // strcpy_s is okay, but this comment is not
don't use //-style comments
[1]
$ cat > is-op.py <<NO_CHECK_EOF
> # is-operator comparing number or string literal
> x = None
> y = x is 'foo'
> y = x is "foo"
> y = x is 5346
> y = x is -6
> y = x is not 'foo'
> y = x is not "foo"
> y = x is not 5346
> y = x is not -6
> NO_CHECK_EOF
$ "$check_code" ./is-op.py
./is-op.py:3:
> y = x is 'foo'
object comparison with literal
./is-op.py:4:
> y = x is "foo"
object comparison with literal
./is-op.py:5:
> y = x is 5346
object comparison with literal
./is-op.py:6:
> y = x is -6
object comparison with literal
./is-op.py:7:
> y = x is not 'foo'
object comparison with literal
./is-op.py:8:
> y = x is not "foo"
object comparison with literal
./is-op.py:9:
> y = x is not 5346
object comparison with literal
./is-op.py:10:
> y = x is not -6
object comparison with literal
[1]
$ cat > for-nolineno.py <<NO_CHECK_EOF
> except:
> NO_CHECK_EOF
$ "$check_code" for-nolineno.py --nolineno
for-nolineno.py:0:
> except:
naked except clause
[1]
$ cat > warning.t <<NO_CHECK_EOF
> $ function warnonly {
> > }
> $ diff -N aaa
> $ function onwarn {}
> NO_CHECK_EOF
$ "$check_code" warning.t
$ "$check_code" --warn warning.t
warning.t:1:
> $ function warnonly {
warning: don't use 'function', use old style
warning.t:3:
> $ diff -N aaa
warning: don't use 'diff -N'
warning.t:4:
> $ function onwarn {}
warning: don't use 'function', use old style
[1]
$ cat > error.t <<NO_CHECK_EOF
> $ [ foo == bar ]
> NO_CHECK_EOF
$ "$check_code" error.t
error.t:1:
> $ [ foo == bar ]
[ foo == bar ] is a bashism, use [ foo = bar ] instead
[1]
$ rm error.t
$ cat > raise-format.py <<NO_CHECK_EOF
> raise SomeException, message
> # this next line is okay
> raise SomeException(arg1, arg2)
> NO_CHECK_EOF
$ "$check_code" not-existing.py raise-format.py
Skipping*not-existing.py* (glob)
raise-format.py:1:
> raise SomeException, message
don't use old-style two-argument raise, use Exception(message)
[1]
$ cat <<NO_CHECK_EOF > tab.t
> indent
> > heredoc
> NO_CHECK_EOF
$ "$check_code" tab.t
tab.t:1:
> indent
don't use tabs to indent
[1]
$ rm tab.t
$ cat > rst.py <<NO_CHECK_EOF
> """problematic rst text
>
> .. note::
> wrong
> """
>
> '''
>
> .. note::
>
> valid
>
> new text
>
> .. note::
>
> also valid
> '''
>
> """mixed
>
> .. note::
>
> good
>
> .. note::
> plus bad
> """
> NO_CHECK_EOF
$ $check_code -w rst.py
rst.py:3:
> .. note::
warning: add two newlines after '.. note::'
rst.py:26:
> .. note::
warning: add two newlines after '.. note::'
[1]
$ cat > ./map-inside-gettext.py <<NO_CHECK_EOF
> print(_("map inside gettext %s" % v))
>
> print(_("concatenating " " by " " space %s" % v))
> print(_("concatenating " + " by " + " '+' %s" % v))
>
> print(_("mapping operation in different line %s"
> % v))
>
> print(_(
> "leading spaces inside of '(' %s" % v))
> NO_CHECK_EOF
$ "$check_code" ./map-inside-gettext.py
./map-inside-gettext.py:1:
> print(_("map inside gettext %s" % v))
don't use % inside _()
./map-inside-gettext.py:3:
> print(_("concatenating " " by " " space %s" % v))
don't use % inside _()
./map-inside-gettext.py:4:
> print(_("concatenating " + " by " + " '+' %s" % v))
don't use % inside _()
./map-inside-gettext.py:6:
> print(_("mapping operation in different line %s"
don't use % inside _()
./map-inside-gettext.py:9:
> print(_(
don't use % inside _()
[1]
web templates
$ mkdir -p mercurial/templates
$ cat > mercurial/templates/example.tmpl <<NO_CHECK_EOF
> {desc}
> {desc|escape}
> {desc|firstline}
> {desc|websub}
> NO_CHECK_EOF
$ "$check_code" --warnings mercurial/templates/example.tmpl
mercurial/templates/example.tmpl:2:
> {desc|escape}
warning: follow desc keyword with either firstline or websub
[1]
'string join across lines with no space' detection
$ cat > stringjoin.py <<NO_CHECK_EOF
> foo = (' foo'
> 'bar foo.'
> 'bar foo:'
> 'bar foo@'
> 'bar foo%'
> 'bar foo*'
> 'bar foo+'
> 'bar foo-'
> 'bar')
> NO_CHECK_EOF
'missing _() in ui message' detection
$ cat > uigettext.py <<NO_CHECK_EOF
> ui.status("% 10s %05d % -3.2f %*s %%"
> # this use '\\\\' instead of '\\', because the latter in
> # heredoc on shell becomes just '\'
> '\\\\ \n \t \0'
> """12345
> """
> '''.:*+-=
> ''' "%-6d \n 123456 .:*+-= foobar")
> NO_CHECK_EOF
superfluous pass
$ cat > superfluous_pass.py <<NO_CHECK_EOF
> # correct examples
> if foo:
> pass
> else:
> # comment-only line means still need pass
> pass
> def nothing():
> pass
> class empty(object):
> pass
> if whatever:
> passvalue(value)
> # bad examples
> if foo:
> "foo"
> pass
> else: # trailing comment doesn't fool checker
> wat()
> pass
> def nothing():
> "docstring means no pass"
> pass
> class empty(object):
> """multiline
> docstring also
> means no pass"""
> pass
> NO_CHECK_EOF
(Checking multiple invalid files at once examines whether caching
translation table for repquote() works as expected or not. All files
should break rules depending on result of repquote(), in this case)
$ "$check_code" stringjoin.py uigettext.py superfluous_pass.py
stringjoin.py:1:
> foo = (' foo'
string join across lines with no space
stringjoin.py:2:
> 'bar foo.'
string join across lines with no space
stringjoin.py:3:
> 'bar foo:'
string join across lines with no space
stringjoin.py:4:
> 'bar foo@'
string join across lines with no space
stringjoin.py:5:
> 'bar foo%'
string join across lines with no space
stringjoin.py:6:
> 'bar foo*'
string join across lines with no space
stringjoin.py:7:
> 'bar foo+'
string join across lines with no space
stringjoin.py:8:
> 'bar foo-'
string join across lines with no space
uigettext.py:1:
> ui.status("% 10s %05d % -3.2f %*s %%"
missing _() in ui message (use () to hide false-positives)
superfluous_pass.py:14:
> if foo:
omit superfluous pass
superfluous_pass.py:17:
> else: # trailing comment doesn't fool checker
omit superfluous pass
superfluous_pass.py:20:
> def nothing():
omit superfluous pass
superfluous_pass.py:23:
> class empty(object):
omit superfluous pass
[1]
Check code fragments embedded in test script
$ cat > embedded-code.t <<NO_CHECK_EOF
> code fragment in doctest style
> >>> x = (1,2)
> ...
> ... x = (1,2)
>
> code fragment in heredoc style
> $ python <<EOF
> > x = (1,2)
> > EOF
>
> code fragment in file heredoc style
> $ python > file.py <<EOF
> > x = (1,2)
> > EOF
> NO_CHECK_EOF
$ "$check_code" embedded-code.t
embedded-code.t:2:
> x = (1,2)
missing whitespace after ,
embedded-code.t:4:
> x = (1,2)
missing whitespace after ,
embedded-code.t:8:
> x = (1,2)
missing whitespace after ,
embedded-code.t:13:
> x = (1,2)
missing whitespace after ,
[1]
"max warnings per file" is shared by all embedded code fragments
$ "$check_code" --per-file=3 embedded-code.t
embedded-code.t:2:
> x = (1,2)
missing whitespace after ,
embedded-code.t:4:
> x = (1,2)
missing whitespace after ,
embedded-code.t:8:
> x = (1,2)
missing whitespace after ,
(too many errors, giving up)
[1]