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scripts: kernel-doc: accept blank lines on parameter description

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Sphinx is very pedantic with respect to blank lines. Sometimes,
in order to make it to properly handle something, we need to
add a blank line. However, currently, any blank line inside a
kernel-doc comment like:

	/*
	 * @foo: bar
         *
	 *       foobar
	 *
	 * some description

will be considered as if "foobar" was part of the description.

This patch changes kernel-doc behavior. After it, foobar will
be considered as part of the parameter text. The description
will only be considered as such if it starts with:

zero spaces after asterisk:

	*foo

one space after asterisk:
	* foo

or have a explicit Description section:

	*   Description:

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/c07d2862792d75a2691d69c9eceb7b89a0164cc0.1586881715.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Mauro Carvalho Chehab 2020-04-14 18:48:29 +02:00 committed by Jonathan Corbet
parent ee2aa75903
commit 0d55d48b19
1 changed files with 23 additions and 12 deletions
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35
scripts/kernel-doc
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@ -331,13 +331,14 @@ my $lineprefix="";
# Parser states
use constant {
STATE_NORMAL => 0, # normal code
STATE_NAME => 1, # looking for function name
STATE_BODY_MAYBE => 2, # body - or maybe more description
STATE_BODY => 3, # the body of the comment
STATE_PROTO => 4, # scanning prototype
STATE_DOCBLOCK => 5, # documentation block
STATE_INLINE => 6, # gathering documentation outside main block
STATE_NORMAL => 0, # normal code
STATE_NAME => 1, # looking for function name
STATE_BODY_MAYBE => 2, # body - or maybe more description
STATE_BODY => 3, # the body of the comment
STATE_BODY_WITH_BLANK_LINE => 4, # the body, which has a blank line
STATE_PROTO => 5, # scanning prototype
STATE_DOCBLOCK => 6, # documentation block
STATE_INLINE => 7, # gathering doc outside main block
};
my $state;
my $in_doc_sect;
@ -1957,6 +1958,12 @@ sub process_body($$) {
}
}
if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) {
dump_section($file, $section, $contents);
$section = $section_default;
$contents = "";
}
if (/$doc_sect/i) { # case insensitive for supported section names
$newsection = $1;
$newcontents = $2;
@ -2010,18 +2017,21 @@ sub process_body($$) {
$state = STATE_PROTO;
$brcount = 0;
} elsif (/$doc_content/) {
# miguel-style comment kludge, look for blank lines after
# @parameter line to signify start of description
if ($1 eq "") {
if ($section =~ m/^@/ || $section eq $section_context) {
if ($section eq $section_context) {
dump_section($file, $section, $contents);
$section = $section_default;
$contents = "";
$new_start_line = $.;
$state = STATE_BODY;
} else {
if ($section ne $section_default) {
$state = STATE_BODY_WITH_BLANK_LINE;
} else {
$state = STATE_BODY;
}
$contents .= "\n";
}
$state = STATE_BODY;
} elsif ($state == STATE_BODY_MAYBE) {
# Continued declaration purpose
chomp($declaration_purpose);
@ -2173,7 +2183,8 @@ sub process_file($) {
process_normal();
} elsif ($state == STATE_NAME) {
process_name($file, $_);
} elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE) {
} elsif ($state == STATE_BODY || $state == STATE_BODY_MAYBE ||
$state == STATE_BODY_WITH_BLANK_LINE) {
process_body($file, $_);
} elsif ($state == STATE_INLINE) { # scanning for inline parameters
process_inline($file, $_);