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We're looking for three consecutive lines, first one is a if/for/while
with a condition and start of body, second one is a body with one and
only semicolon and third is end of the body by itself.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Change while () { smth; last; } to if () { smth; } as 'last' in perl is
analogous to 'break' in C. These are probably copy-paste leftovers from
creating new syntax-check rules.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
In bracket-spacing.pl, the current $line is being modified in $data.
That, however, spoils that $data for another check. Introduce new
$tmpdata variable that can be used for temporary modifications. The
difference between $data and $line is that $data are as much cleaned as
possible from non-code blocks and these changes must be kept.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Commit a1cbe4b5 added a check for spaces around assignments and this
patch extends it to checks for spaces around '=='. One exception is
virAssertCmpInt where comma after '==' is acceptable (since it is a
macro and '==' is its argument).
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Enforce and document the style set up by the previous patches.
* build-aux/bracket-spacing.pl: Add comma checks.
* docs/hacking.html.in: Document the rules.
* HACKING: Regenerate.
Signed-off-by: Eric Blake <eblake@redhat.com>
To register virtual machines and containers with systemd-machined,
and thus have cgroups auto-created, we need to talk over DBus.
This is somewhat tedious code, so introduce a dedicated function
to isolate the DBus call in one place.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Only a few cases are allowed:
1) The expression is empty for "for" loop, E.g.
for (i = 0; ; i++)
2) An empty statement
while (write(statuswrite, &status, 1) == -1 &&
errno == EINTR)
; /* empty */
3) ";" is inside double-quote, I.e, as part of const string. E.g.
vshPrint(ctl, "a ; b ; cd;\n");
The "for" loop in src/rpc/virnettlscontext.c is the special case,
1) applies for it, so change it together in this patch.
This documents the following whitespace rules
if(foo) // Bad
if (foo) // Good
int foo (int wizz) // Bad
int foo(int wizz) // Good
bar = foo (wizz); // Bad
bar = foo(wizz); // Good
typedef int (*foo) (int wizz); // Bad
typedef int (*foo)(int wizz); // Good
int foo( int wizz ); // Bad
int foo(int wizz); // Good
There is a syntax-check rule extension to validate all these rules.
Checking for 'function (...args...)' is quite difficult since it
needs to ignore valid usage with keywords like 'if (...test...)'
and while/for/switch. It must also ignore source comments and
quoted strings.
It is not possible todo this with a simple regex in the normal
syntax-check style. So a short Perl script is created instead
to analyse the source. In practice this works well enough. The
only thing it can't cope with is multi-line quoted strings of
the form
"start of string\
more lines\
more line\
the end"
but this can and should be written as
"start of string"
"more lines"
"more line"
"the end"
with this simple change, the bracket checking script does not
have any false positives across libvirt source, provided it
is only run against .c files. It is not practical to run it
against .h files, since those use whitespace extensively to
get alignment (though this is somewhat inconsistent and could
arguably be fixed).
The only limitation is that it cannot detect a violation where
the first arg starts with a '*', eg
foo(*wizz);
since this generates too many false positives on function
typedefs which can't be supressed efficiently.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
