From 84ce5b987783d362ee4e737b653d6e2feacfa40c Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 18 Dec 2017 10:30:17 -0200 Subject: scripts: kernel-doc: improve nested logic to handle multiple identifiers It is possible to use nested structs like: struct { struct { void *arg1; } st1, st2, *st3, st4; }; Handling it requires to split each parameter. Change the logic to allow such definitions. In order to test the new nested logic, the following file was used to test struct foo { int a; }; /* Just to avoid errors if compiled */ /** * struct my_struct - a struct with nested unions and structs * @arg1: first argument of anonymous union/anonymous struct * @arg2: second argument of anonymous union/anonymous struct * @arg1b: first argument of anonymous union/anonymous struct * @arg2b: second argument of anonymous union/anonymous struct * @arg3: third argument of anonymous union/anonymous struct * @arg4: fourth argument of anonymous union/anonymous struct * @bar.st1.arg1: first argument of struct st1 on union bar * @bar.st1.arg2: second argument of struct st1 on union bar * @bar.st1.bar1: bar1 at st1 * @bar.st1.bar2: bar2 at st1 * @bar.st2.arg1: first argument of struct st2 on union bar * @bar.st2.arg2: second argument of struct st2 on union bar * @bar.st3.arg2: second argument of struct st3 on union bar * @f1: nested function on anonimous union/struct * @bar.st2.f2: nested function on named union/struct */ struct my_struct { /* Anonymous union/struct*/ union { struct { char arg1 : 1; char arg2 : 3; }; struct { int arg1b; int arg2b; }; struct { void *arg3; int arg4; int (*f1)(char foo, int bar); }; }; union { struct { int arg1; int arg2; struct foo bar1, *bar2; } st1; /* bar.st1 is undocumented, cause a warning */ struct { void *arg1; /* bar.st3.arg1 is undocumented, cause a warning */ int arg2; int (*f2)(char foo, int bar); /* bar.st3.fn2 is undocumented, cause a warning */ } st2, st3, *st4; int (*f3)(char foo, int bar); /* f3 is undocumented, cause a warning */ } bar; /* bar is undocumented, cause a warning */ /* private: */ int undoc_privat; /* is undocumented but private, no warning */ /* public: */ int undoc_public; /* is undocumented, cause a warning */ }; It produces the following warnings, as expected: test2.h:57: warning: Function parameter or member 'bar' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'bar.st1' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'bar.st2' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'bar.st3' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'bar.st3.arg1' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'bar.st3.f2' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'bar.st4' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'bar.st4.arg1' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'bar.st4.arg2' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'bar.st4.f2' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'bar.f3' not described in 'my_struct' test2.h:57: warning: Function parameter or member 'undoc_public' not described in 'my_struct' Suggested-by: Markus Heiser Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Jonathan Corbet --- scripts/kernel-doc | 69 ++++++++++++++++++++++++++++++++++-------------------- 1 file changed, 44 insertions(+), 25 deletions(-) (limited to 'scripts/kernel-doc') diff --git a/scripts/kernel-doc b/scripts/kernel-doc index 5d03c9086323..0bda21d9d3f2 100755 --- a/scripts/kernel-doc +++ b/scripts/kernel-doc @@ -1030,15 +1030,16 @@ sub dump_struct($$) { my $declaration = $members; # Split nested struct/union elements as newer ones - my $cont = 1; - while ($cont) { - $cont = 0; - while ($members =~ m/(struct|union)([^{};]+){([^{}]*)}([^{}\;]*)\;/) { - my $newmember = "$1 $4;"; - my $id = $4; - my $content = $3; + while ($members =~ m/(struct|union)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;/) { + my $newmember; + my $maintype = $1; + my $ids = $4; + my $content = $3; + foreach my $id(split /,/, $ids) { + $newmember .= "$maintype $id; "; + $id =~ s/[:\[].*//; - $id =~ s/^\*+//; + $id =~ s/^\s*\**(\S+)\s*/$1/; foreach my $arg (split /;/, $content) { next if ($arg =~ m/^\s*$/); if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) { @@ -1049,30 +1050,48 @@ sub dump_struct($$) { next if (!$name); if ($id =~ m/^\s*$/) { # anonymous struct/union - $newmember .= "$type$name$extra;"; + $newmember .= "$type$name$extra; "; } else { - $newmember .= "$type$id.$name$extra;"; + $newmember .= "$type$id.$name$extra; "; } } else { - my $type = $arg; - my $name = $arg; - $type =~ s/\s\S+$//; - $name =~ s/.*\s+//; - $name =~ s/[:\[].*//; - $name =~ s/^\*+//; - next if (($name =~ m/^\s*$/)); - if ($id =~ m/^\s*$/) { - # anonymous struct/union - $newmember .= "$type $name;"; + my $type; + my $names; + $arg =~ s/^\s+//; + $arg =~ s/\s+$//; + # Handle bitmaps + $arg =~ s/:\s*\d+\s*//g; + # Handle arrays + $arg =~ s/\[\S+\]//g; + # The type may have multiple words, + # and multiple IDs can be defined, like: + # const struct foo, *bar, foobar + # So, we remove spaces when parsing the + # names, in order to match just names + # and commas for the names + $arg =~ s/\s*,\s*/,/g; + if ($arg =~ m/(.*)\s+([\S+,]+)/) { + $type = $1; + $names = $2; } else { - $newmember .= "$type $id.$name;"; + $newmember .= "$arg; "; + next; + } + foreach my $name (split /,/, $names) { + $name =~ s/^\s*\**(\S+)\s*/$1/; + next if (($name =~ m/^\s*$/)); + if ($id =~ m/^\s*$/) { + # anonymous struct/union + $newmember .= "$type $name; "; + } else { + $newmember .= "$type $id.$name; "; + } } } } - $members =~ s/(struct|union)([^{};]+){([^{}]*)}([^{}\;]*)\;/$newmember/; - $cont = 1; - }; - }; + } + $members =~ s/(struct|union)([^\{\};]+)\{([^\{\}]*)}([^\{\}\;]*)\;/$newmember/; + } # Ignore other nested elements, like enums $members =~ s/({[^\{\}]*})//g; -- cgit v1.2.3-59-g8ed1b