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scripts: kernel-doc: fix line number handling

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Address several issues related to pointing to the wrong line
number:

1) ensure that line numbers will always be initialized

   When section is the default (Description), the line number
   is not initializing, producing this:

	$ ./scripts/kernel-doc --enable-lineno ./drivers/media/v4l2-core/v4l2-mem2mem.c|less

	**Description**

	#define LINENO 0
	In case of streamoff or release called on any context,
	1] If the context is currently running, then abort job will be called
	2] If the context is queued, then the context will be removed from
	   the job_queue

  Which is not right. Ensure that the line number will always
  be there. After applied, the result now points to the right location:

	**Description**

	#define LINENO 410
	In case of streamoff or release called on any context,
	1] If the context is currently running, then abort job will be called
	2] If the context is queued, then the context will be removed from
	   the job_queue

2) The line numbers for function prototypes are always + 1,
   because it is taken at the line after handling the prototype.
   Change the logic to point to the next line after the /** */
   block;

3) The "DOC:" line number should point to the same line as this
   markup is found, and not to the next one.

Probably part of the issues were due to a but that was causing
the line number offset to be incremented by one, if --export
were used.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20201117165312.118257-24-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2020-11-17 17:53:06 +01:00 committed by Paolo Bonzini
parent 486966e4a4
commit 4f5f16a193
1 changed files with 4 additions and 2 deletions
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6
scripts/kernel-doc
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@ -1705,7 +1705,7 @@ sub dump_function($$) {
my $file = shift;
my $noret = 0;
print_lineno($.);
print_lineno($new_start_line);
$prototype =~ s/^static +//;
$prototype =~ s/^extern +//;
@ -2033,7 +2033,7 @@ sub process_name($$) {
if (/$doc_block/o) {
$state = STATE_DOCBLOCK;
$contents = "";
$new_start_line = $. + 1;
$new_start_line = $.;
if ( $1 eq "" ) {
$section = $section_intro;
@ -2116,6 +2116,7 @@ sub process_body($$) {
if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) {
dump_section($file, $section, $contents);
$section = $section_default;
$new_start_line = $.;
$contents = "";
}
@ -2171,6 +2172,7 @@ sub process_body($$) {
$prototype = "";
$state = STATE_PROTO;
$brcount = 0;
$new_start_line = $. + 1;
} elsif (/$doc_content/) {
if ($1 eq "") {
if ($section eq $section_context) {