Em Wed, 13 Aug 2025 15:32:12 -0600
Jonathan Corbet <corbet@xxxxxxx> escreveu:
> We've been using the Python version and nobody has missed this one. All
> credit goes to Mauro Carvalho Chehab for creating the replacement.
>
> Signed-off-by: Jonathan Corbet <corbet@xxxxxxx>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
> ---
> scripts/kernel-doc.pl | 2439 -----------------------------------------
> 1 file changed, 2439 deletions(-)
> delete mode 100755 scripts/kernel-doc.pl
>
> diff --git a/scripts/kernel-doc.pl b/scripts/kernel-doc.pl
> deleted file mode 100755
> index 5db23cbf4eb2..000000000000
> --- a/scripts/kernel-doc.pl
> +++ /dev/null
> @@ -1,2439 +0,0 @@
> -#!/usr/bin/env perl
> -# SPDX-License-Identifier: GPL-2.0
> -# vim: softtabstop=4
> -
> -use warnings;
> -use strict;
> -
> -## Copyright (c) 1998 Michael Zucchi, All Rights Reserved ##
> -## Copyright (C) 2000, 1 Tim Waugh <twaugh@xxxxxxxxxx> ##
> -## Copyright (C) 2001 Simon Huggins ##
> -## Copyright (C) 2005-2012 Randy Dunlap ##
> -## Copyright (C) 2012 Dan Luedtke ##
> -## ##
> -## #define enhancements by Armin Kuster <akuster@xxxxxxxxxx> ##
> -## Copyright (c) 2000 MontaVista Software, Inc. ##
> -#
> -# Copyright (C) 2022 Tomasz Warniełło (POD)
> -
> -use Pod::Usage qw/pod2usage/;
> -
> -=head1 NAME
> -
> -kernel-doc - Print formatted kernel documentation to stdout
> -
> -=head1 SYNOPSIS
> -
> - kernel-doc [-h] [-v] [-Werror] [-Wall] [-Wreturn] [-Wshort-desc[ription]] [-Wcontents-before-sections]
> - [ -man |
> - -rst [-enable-lineno] |
> - -none
> - ]
> - [
> - -export |
> - -internal |
> - [-function NAME] ... |
> - [-nosymbol NAME] ...
> - ]
> - [-no-doc-sections]
> - [-export-file FILE] ...
> - FILE ...
> -
> -Run `kernel-doc -h` for details.
> -
> -=head1 DESCRIPTION
> -
> -Read C language source or header FILEs, extract embedded documentation comments,
> -and print formatted documentation to standard output.
> -
> -The documentation comments are identified by the "/**" opening comment mark.
> -
> -See Documentation/doc-guide/kernel-doc.rst for the documentation comment syntax.
> -
> -=cut
> -
> -# more perldoc at the end of the file
> -
> -## init lots of data
> -
> -my $errors = 0;
> -my $warnings = 0;
> -my $anon_struct_union = 0;
> -
> -# match expressions used to find embedded type information
> -my $type_constant = '\b``([^\`]+)``\b';
> -my $type_constant2 = '\%([-_*\w]+)';
> -my $type_func = '(\w+)\(\)';
> -my $type_param = '\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
> -my $type_param_ref = '([\!~\*]?)\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)';
> -my $type_fp_param = '\@(\w+)\(\)'; # Special RST handling for func ptr params
> -my $type_fp_param2 = '\@(\w+->\S+)\(\)'; # Special RST handling for structs with func ptr params
> -my $type_env = '(\$\w+)';
> -my $type_enum = '\&(enum\s*([_\w]+))';
> -my $type_struct = '\&(struct\s*([_\w]+))';
> -my $type_typedef = '\&(typedef\s*([_\w]+))';
> -my $type_union = '\&(union\s*([_\w]+))';
> -my $type_member = '\&([_\w]+)(\.|->)([_\w]+)';
> -my $type_fallback = '\&([_\w]+)';
> -my $type_member_func = $type_member . '\(\)';
> -
> -# Output conversion substitutions.
> -# One for each output format
> -
> -# these are pretty rough
> -my @highlights_man = (
> - [$type_constant, "\$1"],
> - [$type_constant2, "\$1"],
> - [$type_func, "\\\\fB\$1\\\\fP"],
> - [$type_enum, "\\\\fI\$1\\\\fP"],
> - [$type_struct, "\\\\fI\$1\\\\fP"],
> - [$type_typedef, "\\\\fI\$1\\\\fP"],
> - [$type_union, "\\\\fI\$1\\\\fP"],
> - [$type_param, "\\\\fI\$1\\\\fP"],
> - [$type_param_ref, "\\\\fI\$1\$2\\\\fP"],
> - [$type_member, "\\\\fI\$1\$2\$3\\\\fP"],
> - [$type_fallback, "\\\\fI\$1\\\\fP"]
> - );
> -my $blankline_man = "";
> -
> -# rst-mode
> -my @highlights_rst = (
> - [$type_constant, "``\$1``"],
> - [$type_constant2, "``\$1``"],
> -
> - # Note: need to escape () to avoid func matching later
> - [$type_member_func, "\\:c\\:type\\:`\$1\$2\$3\\\\(\\\\) <\$1>`"],
> - [$type_member, "\\:c\\:type\\:`\$1\$2\$3 <\$1>`"],
> - [$type_fp_param, "**\$1\\\\(\\\\)**"],
> - [$type_fp_param2, "**\$1\\\\(\\\\)**"],
> - [$type_func, "\$1()"],
> - [$type_enum, "\\:c\\:type\\:`\$1 <\$2>`"],
> - [$type_struct, "\\:c\\:type\\:`\$1 <\$2>`"],
> - [$type_typedef, "\\:c\\:type\\:`\$1 <\$2>`"],
> - [$type_union, "\\:c\\:type\\:`\$1 <\$2>`"],
> -
> - # in rst this can refer to any type
> - [$type_fallback, "\\:c\\:type\\:`\$1`"],
> - [$type_param_ref, "**\$1\$2**"]
> - );
> -my $blankline_rst = "\n";
> -
> -# read arguments
> -if ($#ARGV == -1) {
> - pod2usage(
> - -message => "No arguments!\n",
> - -exitval => 1,
> - -verbose => 99,
> - -sections => 'SYNOPSIS',
> - -output => \*STDERR,
> - );
> -}
> -
> -my $kernelversion;
> -
> -my $dohighlight = "";
> -
> -my $verbose = 0;
> -my $Werror = 0;
> -my $Wreturn = 0;
> -my $Wshort_desc = 0;
> -my $output_mode = "rst";
> -my $output_preformatted = 0;
> -my $no_doc_sections = 0;
> -my $enable_lineno = 0;
> -my @highlights = @highlights_rst;
> -my $blankline = $blankline_rst;
> -my $modulename = "Kernel API";
> -
> -use constant {
> - OUTPUT_ALL => 0, # output all symbols and doc sections
> - OUTPUT_INCLUDE => 1, # output only specified symbols
> - OUTPUT_EXPORTED => 2, # output exported symbols
> - OUTPUT_INTERNAL => 3, # output non-exported symbols
> -};
> -my $output_selection = OUTPUT_ALL;
> -my $show_not_found = 0; # No longer used
> -
> -my @export_file_list;
> -
> -my @build_time;
> -if (defined($ENV{'KBUILD_BUILD_TIMESTAMP'}) &&
> - (my $seconds = `date -d "${ENV{'KBUILD_BUILD_TIMESTAMP'}}" +%s`) ne '') {
> - @build_time = gmtime($seconds);
> -} else {
> - @build_time = localtime;
> -}
> -
> -my $man_date = ('January', 'February', 'March', 'April', 'May', 'June',
> - 'July', 'August', 'September', 'October',
> - 'November', 'December')[$build_time[4]] .
> - " " . ($build_time[5]+1900);
> -
> -# Essentially these are globals.
> -# They probably want to be tidied up, made more localised or something.
> -# CAVEAT EMPTOR! Some of the others I localised may not want to be, which
> -# could cause "use of undefined value" or other bugs.
> -my ($function, %function_table, %parametertypes, $declaration_purpose);
> -my %nosymbol_table = ();
> -my $declaration_start_line;
> -my ($type, $declaration_name, $return_type);
> -my ($newsection, $newcontents, $prototype, $brcount);
> -
> -if (defined($ENV{'KBUILD_VERBOSE'}) && $ENV{'KBUILD_VERBOSE'} =~ '1') {
> - $verbose = 1;
> -}
> -
> -if (defined($ENV{'KCFLAGS'})) {
> - my $kcflags = "$ENV{'KCFLAGS'}";
> -
> - if ($kcflags =~ /(\s|^)-Werror(\s|$)/) {
> - $Werror = 1;
> - }
> -}
> -
> -# reading this variable is for backwards compat just in case
> -# someone was calling it with the variable from outside the
> -# kernel's build system
> -if (defined($ENV{'KDOC_WERROR'})) {
> - $Werror = "$ENV{'KDOC_WERROR'}";
> -}
> -# other environment variables are converted to command-line
> -# arguments in cmd_checkdoc in the build system
> -
> -# Generated docbook code is inserted in a template at a point where
> -# docbook v3.1 requires a non-zero sequence of RefEntry's; see:
> -# https://www.oasis-open.org/docbook/documentation/reference/html/refentry.html
> -# We keep track of number of generated entries and generate a dummy
> -# if needs be to ensure the expanded template can be postprocessed
> -# into html.
> -my $section_counter = 0;
> -
> -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_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 $leading_space;
> -
> -# Inline documentation state
> -use constant {
> - STATE_INLINE_NA => 0, # not applicable ($state != STATE_INLINE)
> - STATE_INLINE_NAME => 1, # looking for member name (@foo:)
> - STATE_INLINE_TEXT => 2, # looking for member documentation
> - STATE_INLINE_END => 3, # done
> - STATE_INLINE_ERROR => 4, # error - Comment without header was found.
> - # Spit a warning as it's not
> - # proper kernel-doc and ignore the rest.
> -};
> -my $inline_doc_state;
> -
> -#declaration types: can be
> -# 'function', 'struct', 'union', 'enum', 'typedef'
> -my $decl_type;
> -
> -# Name of the kernel-doc identifier for non-DOC markups
> -my $identifier;
> -
> -my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
> -my $doc_end = '\*/';
> -my $doc_com = '\s*\*\s*';
> -my $doc_com_body = '\s*\* ?';
> -my $doc_decl = $doc_com . '(\w+)';
> -# @params and a strictly limited set of supported section names
> -# Specifically:
> -# Match @word:
> -# @...:
> -# @{section-name}:
> -# while trying to not match literal block starts like "example::"
> -#
> -my $doc_sect = $doc_com .
> - '\s*(\@[.\w]+|\@\.\.\.|description|context|returns?|notes?|examples?)\s*:([^:].*)?$';
> -my $doc_content = $doc_com_body . '(.*)';
> -my $doc_block = $doc_com . 'DOC:\s*(.*)?';
> -my $doc_inline_start = '^\s*/\*\*\s*$';
> -my $doc_inline_sect = '\s*\*\s*(@\s*[\w][\w\.]*\s*):(.*)';
> -my $doc_inline_end = '^\s*\*/\s*$';
> -my $doc_inline_oneline = '^\s*/\*\*\s*(@[\w\s]+):\s*(.*)\s*\*/\s*$';
> -my $export_symbol = '^\s*EXPORT_SYMBOL(_GPL)?\s*\(\s*(\w+)\s*\)\s*;';
> -my $export_symbol_ns = '^\s*EXPORT_SYMBOL_NS(_GPL)?\s*\(\s*(\w+)\s*,\s*"\S+"\)\s*;';
> -my $function_pointer = qr{([^\(]*\(\*)\s*\)\s*\(([^\)]*)\)};
> -my $attribute = qr{__attribute__\s*\(\([a-z0-9,_\*\s\(\)]*\)\)}i;
> -
> -my %parameterdescs;
> -my %parameterdesc_start_lines;
> -my @parameterlist;
> -my %sections;
> -my @sectionlist;
> -my %section_start_lines;
> -my $sectcheck;
> -my $struct_actual;
> -
> -my $contents = "";
> -my $new_start_line = 0;
> -
> -# the canonical section names. see also $doc_sect above.
> -my $section_default = "Description"; # default section
> -my $section_intro = "Introduction";
> -my $section = $section_default;
> -my $section_context = "Context";
> -my $section_return = "Return";
> -
> -my $undescribed = "-- undescribed --";
> -
> -reset_state();
> -
> -while ($ARGV[0] =~ m/^--?(.*)/) {
> - my $cmd = $1;
> - shift @ARGV;
> - if ($cmd eq "man") {
> - $output_mode = "man";
> - @highlights = @highlights_man;
> - $blankline = $blankline_man;
> - } elsif ($cmd eq "rst") {
> - $output_mode = "rst";
> - @highlights = @highlights_rst;
> - $blankline = $blankline_rst;
> - } elsif ($cmd eq "none") {
> - $output_mode = "none";
> - } elsif ($cmd eq "module") { # not needed for XML, inherits from calling document
> - $modulename = shift @ARGV;
> - } elsif ($cmd eq "function") { # to only output specific functions
> - $output_selection = OUTPUT_INCLUDE;
> - $function = shift @ARGV;
> - $function_table{$function} = 1;
> - } elsif ($cmd eq "nosymbol") { # Exclude specific symbols
> - my $symbol = shift @ARGV;
> - $nosymbol_table{$symbol} = 1;
> - } elsif ($cmd eq "export") { # only exported symbols
> - $output_selection = OUTPUT_EXPORTED;
> - %function_table = ();
> - } elsif ($cmd eq "internal") { # only non-exported symbols
> - $output_selection = OUTPUT_INTERNAL;
> - %function_table = ();
> - } elsif ($cmd eq "export-file") {
> - my $file = shift @ARGV;
> - push(@export_file_list, $file);
> - } elsif ($cmd eq "v") {
> - $verbose = 1;
> - } elsif ($cmd eq "Werror") {
> - $Werror = 1;
> - } elsif ($cmd eq "Wreturn") {
> - $Wreturn = 1;
> - } elsif ($cmd eq "Wshort-desc" or $cmd eq "Wshort-description") {
> - $Wshort_desc = 1;
> - } elsif ($cmd eq "Wall") {
> - $Wreturn = 1;
> - $Wshort_desc = 1;
> - } elsif (($cmd eq "h") || ($cmd eq "help")) {
> - pod2usage(-exitval => 0, -verbose => 2);
> - } elsif ($cmd eq 'no-doc-sections') {
> - $no_doc_sections = 1;
> - } elsif ($cmd eq 'enable-lineno') {
> - $enable_lineno = 1;
> - } elsif ($cmd eq 'show-not-found') {
> - $show_not_found = 1; # A no-op but don't fail
> - } else {
> - # Unknown argument
> - pod2usage(
> - -message => "Argument unknown!\n",
> - -exitval => 1,
> - -verbose => 99,
> - -sections => 'SYNOPSIS',
> - -output => \*STDERR,
> - );
> - }
> - if ($#ARGV < 0){
> - pod2usage(
> - -message => "FILE argument missing\n",
> - -exitval => 1,
> - -verbose => 99,
> - -sections => 'SYNOPSIS',
> - -output => \*STDERR,
> - );
> - }
> -}
> -
> -# continue execution near EOF;
> -
> -sub findprog($)
> -{
> - foreach(split(/:/, $ENV{PATH})) {
> - return "$_/$_[0]" if(-x "$_/$_[0]");
> - }
> -}
> -
> -# get kernel version from env
> -sub get_kernel_version() {
> - my $version = 'unknown kernel version';
> -
> - if (defined($ENV{'KERNELVERSION'})) {
> - $version = $ENV{'KERNELVERSION'};
> - }
> - return $version;
> -}
> -
> -#
> -sub print_lineno {
> - my $lineno = shift;
> - if ($enable_lineno && defined($lineno)) {
> - print ".. LINENO " . $lineno . "\n";
> - }
> -}
> -
> -sub emit_warning {
> - my $location = shift;
> - my $msg = shift;
> - print STDERR "$location: warning: $msg";
> - ++$warnings;
> -}
> -##
> -# dumps section contents to arrays/hashes intended for that purpose.
> -#
> -sub dump_section {
> - my $file = shift;
> - my $name = shift;
> - my $contents = join "\n", @_;
> -
> - if ($name =~ m/$type_param/) {
> - $name = $1;
> - $parameterdescs{$name} = $contents;
> - $sectcheck = $sectcheck . $name . " ";
> - $parameterdesc_start_lines{$name} = $new_start_line;
> - $new_start_line = 0;
> - } elsif ($name eq "@\.\.\.") {
> - $name = "...";
> - $parameterdescs{$name} = $contents;
> - $sectcheck = $sectcheck . $name . " ";
> - $parameterdesc_start_lines{$name} = $new_start_line;
> - $new_start_line = 0;
> - } else {
> - if (defined($sections{$name}) && ($sections{$name} ne "")) {
> - # Only warn on user specified duplicate section names.
> - if ($name ne $section_default) {
> - emit_warning("${file}:$.", "duplicate section name '$name'\n");
> - }
> - $sections{$name} .= $contents;
> - } else {
> - $sections{$name} = $contents;
> - push @sectionlist, $name;
> - $section_start_lines{$name} = $new_start_line;
> - $new_start_line = 0;
> - }
> - }
> -}
> -
> -##
> -# dump DOC: section after checking that it should go out
> -#
> -sub dump_doc_section {
> - my $file = shift;
> - my $name = shift;
> - my $contents = join "\n", @_;
> -
> - if ($no_doc_sections) {
> - return;
> - }
> -
> - return if (defined($nosymbol_table{$name}));
> -
> - if (($output_selection == OUTPUT_ALL) ||
> - (($output_selection == OUTPUT_INCLUDE) &&
> - defined($function_table{$name})))
> - {
> - dump_section($file, $name, $contents);
> - output_blockhead({'sectionlist' => \@sectionlist,
> - 'sections' => \%sections,
> - 'module' => $modulename,
> - 'content-only' => ($output_selection != OUTPUT_ALL), });
> - }
> -}
> -
> -##
> -# output function
> -#
> -# parameterdescs, a hash.
> -# function => "function name"
> -# parameterlist => @list of parameters
> -# parameterdescs => %parameter descriptions
> -# sectionlist => @list of sections
> -# sections => %section descriptions
> -#
> -
> -sub output_highlight {
> - my $contents = join "\n",@_;
> - my $line;
> -
> -# DEBUG
> -# if (!defined $contents) {
> -# use Carp;
> -# confess "output_highlight got called with no args?\n";
> -# }
> -
> -# print STDERR "contents b4:$contents\n";
> - eval $dohighlight;
> - die $@ if $@;
> -# print STDERR "contents af:$contents\n";
> -
> - foreach $line (split "\n", $contents) {
> - if (! $output_preformatted) {
> - $line =~ s/^\s*//;
> - }
> - if ($line eq ""){
> - if (! $output_preformatted) {
> - print $lineprefix, $blankline;
> - }
> - } else {
> - if ($output_mode eq "man" && substr($line, 0, 1) eq ".") {
> - print "\\&$line";
> - } else {
> - print $lineprefix, $line;
> - }
> - }
> - print "\n";
> - }
> -}
> -
> -##
> -# output function in man
> -sub output_function_man(%) {
> - my %args = %{$_[0]};
> - my ($parameter, $section);
> - my $count;
> - my $func_macro = $args{'func_macro'};
> - my $paramcount = $#{$args{'parameterlist'}}; # -1 is empty
> -
> - print ".TH \"$args{'function'}\" 9 \"$args{'function'}\" \"$man_date\" \"Kernel Hacker's Manual\" LINUX\n";
> -
> - print ".SH NAME\n";
> - print $args{'function'} . " \\- " . $args{'purpose'} . "\n";
> -
> - print ".SH SYNOPSIS\n";
> - if ($args{'functiontype'} ne "") {
> - print ".B \"" . $args{'functiontype'} . "\" " . $args{'function'} . "\n";
> - } else {
> - print ".B \"" . $args{'function'} . "\n";
> - }
> - $count = 0;
> - my $parenth = "(";
> - my $post = ",";
> - foreach my $parameter (@{$args{'parameterlist'}}) {
> - if ($count == $#{$args{'parameterlist'}}) {
> - $post = ");";
> - }
> - $type = $args{'parametertypes'}{$parameter};
> - if ($type =~ m/$function_pointer/) {
> - # pointer-to-function
> - print ".BI \"" . $parenth . $1 . "\" " . " \") (" . $2 . ")" . $post . "\"\n";
> - } else {
> - $type =~ s/([^\*])$/$1 /;
> - print ".BI \"" . $parenth . $type . "\" " . " \"" . $post . "\"\n";
> - }
> - $count++;
> - $parenth = "";
> - }
> -
> - $paramcount = $#{$args{'parameterlist'}}; # -1 is empty
> - if ($paramcount >= 0) {
> - print ".SH ARGUMENTS\n";
> - }
> - foreach $parameter (@{$args{'parameterlist'}}) {
> - my $parameter_name = $parameter;
> - $parameter_name =~ s/\[.*//;
> -
> - print ".IP \"" . $parameter . "\" 12\n";
> - output_highlight($args{'parameterdescs'}{$parameter_name});
> - }
> - foreach $section (@{$args{'sectionlist'}}) {
> - print ".SH \"", uc $section, "\"\n";
> - output_highlight($args{'sections'}{$section});
> - }
> -}
> -
> -##
> -# output enum in man
> -sub output_enum_man(%) {
> - my %args = %{$_[0]};
> - my ($parameter, $section);
> - my $count;
> -
> - print ".TH \"$args{'module'}\" 9 \"enum $args{'enum'}\" \"$man_date\" \"API Manual\" LINUX\n";
> -
> - print ".SH NAME\n";
> - print "enum " . $args{'enum'} . " \\- " . $args{'purpose'} . "\n";
> -
> - print ".SH SYNOPSIS\n";
> - print "enum " . $args{'enum'} . " {\n";
> - $count = 0;
> - foreach my $parameter (@{$args{'parameterlist'}}) {
> - print ".br\n.BI \" $parameter\"\n";
> - if ($count == $#{$args{'parameterlist'}}) {
> - print "\n};\n";
> - last;
> - } else {
> - print ", \n.br\n";
> - }
> - $count++;
> - }
> -
> - print ".SH Constants\n";
> - foreach $parameter (@{$args{'parameterlist'}}) {
> - my $parameter_name = $parameter;
> - $parameter_name =~ s/\[.*//;
> -
> - print ".IP \"" . $parameter . "\" 12\n";
> - output_highlight($args{'parameterdescs'}{$parameter_name});
> - }
> - foreach $section (@{$args{'sectionlist'}}) {
> - print ".SH \"$section\"\n";
> - output_highlight($args{'sections'}{$section});
> - }
> -}
> -
> -##
> -# output struct in man
> -sub output_struct_man(%) {
> - my %args = %{$_[0]};
> - my ($parameter, $section);
> -
> - print ".TH \"$args{'module'}\" 9 \"" . $args{'type'} . " " . $args{'struct'} . "\" \"$man_date\" \"API Manual\" LINUX\n";
> -
> - print ".SH NAME\n";
> - print $args{'type'} . " " . $args{'struct'} . " \\- " . $args{'purpose'} . "\n";
> -
> - my $declaration = $args{'definition'};
> - $declaration =~ s/\t/ /g;
> - $declaration =~ s/\n/"\n.br\n.BI \"/g;
> - print ".SH SYNOPSIS\n";
> - print $args{'type'} . " " . $args{'struct'} . " {\n.br\n";
> - print ".BI \"$declaration\n};\n.br\n\n";
> -
> - print ".SH Members\n";
> - foreach $parameter (@{$args{'parameterlist'}}) {
> - ($parameter =~ /^#/) && next;
> -
> - my $parameter_name = $parameter;
> - $parameter_name =~ s/\[.*//;
> -
> - ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
> - print ".IP \"" . $parameter . "\" 12\n";
> - output_highlight($args{'parameterdescs'}{$parameter_name});
> - }
> - foreach $section (@{$args{'sectionlist'}}) {
> - print ".SH \"$section\"\n";
> - output_highlight($args{'sections'}{$section});
> - }
> -}
> -
> -##
> -# output typedef in man
> -sub output_typedef_man(%) {
> - my %args = %{$_[0]};
> - my ($parameter, $section);
> -
> - print ".TH \"$args{'module'}\" 9 \"$args{'typedef'}\" \"$man_date\" \"API Manual\" LINUX\n";
> -
> - print ".SH NAME\n";
> - print "typedef " . $args{'typedef'} . " \\- " . $args{'purpose'} . "\n";
> -
> - foreach $section (@{$args{'sectionlist'}}) {
> - print ".SH \"$section\"\n";
> - output_highlight($args{'sections'}{$section});
> - }
> -}
> -
> -sub output_blockhead_man(%) {
> - my %args = %{$_[0]};
> - my ($parameter, $section);
> - my $count;
> -
> - print ".TH \"$args{'module'}\" 9 \"$args{'module'}\" \"$man_date\" \"API Manual\" LINUX\n";
> -
> - foreach $section (@{$args{'sectionlist'}}) {
> - print ".SH \"$section\"\n";
> - output_highlight($args{'sections'}{$section});
> - }
> -}
> -
> -##
> -# output in restructured text
> -#
> -
> -#
> -# This could use some work; it's used to output the DOC: sections, and
> -# starts by putting out the name of the doc section itself, but that tends
> -# to duplicate a header already in the template file.
> -#
> -sub output_blockhead_rst(%) {
> - my %args = %{$_[0]};
> - my ($parameter, $section);
> -
> - foreach $section (@{$args{'sectionlist'}}) {
> - next if (defined($nosymbol_table{$section}));
> -
> - if ($output_selection != OUTPUT_INCLUDE) {
> - print ".. _$section:\n\n";
> - print "**$section**\n\n";
> - }
> - print_lineno($section_start_lines{$section});
> - output_highlight_rst($args{'sections'}{$section});
> - print "\n";
> - }
> -}
> -
> -#
> -# Apply the RST highlights to a sub-block of text.
> -#
> -sub highlight_block($) {
> - # The dohighlight kludge requires the text be called $contents
> - my $contents = shift;
> - eval $dohighlight;
> - die $@ if $@;
> - return $contents;
> -}
> -
> -#
> -# Regexes used only here.
> -#
> -my $sphinx_literal = '^[^.].*::$';
> -my $sphinx_cblock = '^\.\.\ +code-block::';
> -
> -sub output_highlight_rst {
> - my $input = join "\n",@_;
> - my $output = "";
> - my $line;
> - my $in_literal = 0;
> - my $litprefix;
> - my $block = "";
> -
> - foreach $line (split "\n",$input) {
> - #
> - # If we're in a literal block, see if we should drop out
> - # of it. Otherwise pass the line straight through unmunged.
> - #
> - if ($in_literal) {
> - if (! ($line =~ /^\s*$/)) {
> - #
> - # If this is the first non-blank line in a literal
> - # block we need to figure out what the proper indent is.
> - #
> - if ($litprefix eq "") {
> - $line =~ /^(\s*)/;
> - $litprefix = '^' . $1;
> - $output .= $line . "\n";
> - } elsif (! ($line =~ /$litprefix/)) {
> - $in_literal = 0;
> - } else {
> - $output .= $line . "\n";
> - }
> - } else {
> - $output .= $line . "\n";
> - }
> - }
> - #
> - # Not in a literal block (or just dropped out)
> - #
> - if (! $in_literal) {
> - $block .= $line . "\n";
> - if (($line =~ /$sphinx_literal/) || ($line =~ /$sphinx_cblock/)) {
> - $in_literal = 1;
> - $litprefix = "";
> - $output .= highlight_block($block);
> - $block = ""
> - }
> - }
> - }
> -
> - if ($block) {
> - $output .= highlight_block($block);
> - }
> -
> - $output =~ s/^\n+//g;
> - $output =~ s/\n+$//g;
> -
> - foreach $line (split "\n", $output) {
> - print $lineprefix . $line . "\n";
> - }
> -}
> -
> -sub output_function_rst(%) {
> - my %args = %{$_[0]};
> - my ($parameter, $section);
> - my $oldprefix = $lineprefix;
> -
> - my $signature = "";
> - my $func_macro = $args{'func_macro'};
> - my $paramcount = $#{$args{'parameterlist'}}; # -1 is empty
> -
> - if ($func_macro) {
> - $signature = $args{'function'};
> - } else {
> - if ($args{'functiontype'}) {
> - $signature = $args{'functiontype'} . " ";
> - }
> - $signature .= $args{'function'} . " (";
> - }
> -
> - my $count = 0;
> - foreach my $parameter (@{$args{'parameterlist'}}) {
> - if ($count ne 0) {
> - $signature .= ", ";
> - }
> - $count++;
> - $type = $args{'parametertypes'}{$parameter};
> -
> - if ($type =~ m/$function_pointer/) {
> - # pointer-to-function
> - $signature .= $1 . $parameter . ") (" . $2 . ")";
> - } else {
> - $signature .= $type;
> - }
> - }
> -
> - if (!$func_macro) {
> - $signature .= ")";
> - }
> -
> - if ($args{'typedef'} || $args{'functiontype'} eq "") {
> - print ".. c:macro:: ". $args{'function'} . "\n\n";
> -
> - if ($args{'typedef'}) {
> - print_lineno($declaration_start_line);
> - print " **Typedef**: ";
> - $lineprefix = "";
> - output_highlight_rst($args{'purpose'});
> - print "\n\n**Syntax**\n\n";
> - print " ``$signature``\n\n";
> - } else {
> - print "``$signature``\n\n";
> - }
> - } else {
> - print ".. c:function:: $signature\n\n";
> - }
> -
> - if (!$args{'typedef'}) {
> - print_lineno($declaration_start_line);
> - $lineprefix = " ";
> - output_highlight_rst($args{'purpose'});
> - print "\n";
> - }
> -
> - #
> - # Put our descriptive text into a container (thus an HTML <div>) to help
> - # set the function prototypes apart.
> - #
> - $lineprefix = " ";
> - if ($paramcount >= 0) {
> - print ".. container:: kernelindent\n\n";
> - print $lineprefix . "**Parameters**\n\n";
> - }
> - foreach $parameter (@{$args{'parameterlist'}}) {
> - my $parameter_name = $parameter;
> - $parameter_name =~ s/\[.*//;
> - $type = $args{'parametertypes'}{$parameter};
> -
> - if ($type ne "") {
> - print $lineprefix . "``$type``\n";
> - } else {
> - print $lineprefix . "``$parameter``\n";
> - }
> -
> - print_lineno($parameterdesc_start_lines{$parameter_name});
> -
> - $lineprefix = " ";
> - if (defined($args{'parameterdescs'}{$parameter_name}) &&
> - $args{'parameterdescs'}{$parameter_name} ne $undescribed) {
> - output_highlight_rst($args{'parameterdescs'}{$parameter_name});
> - } else {
> - print $lineprefix . "*undescribed*\n";
> - }
> - $lineprefix = " ";
> - print "\n";
> - }
> -
> - output_section_rst(@_);
> - $lineprefix = $oldprefix;
> -}
> -
> -sub output_section_rst(%) {
> - my %args = %{$_[0]};
> - my $section;
> - my $oldprefix = $lineprefix;
> -
> - foreach $section (@{$args{'sectionlist'}}) {
> - print $lineprefix . "**$section**\n\n";
> - print_lineno($section_start_lines{$section});
> - output_highlight_rst($args{'sections'}{$section});
> - print "\n";
> - }
> - print "\n";
> -}
> -
> -sub output_enum_rst(%) {
> - my %args = %{$_[0]};
> - my ($parameter);
> - my $oldprefix = $lineprefix;
> - my $count;
> - my $outer;
> -
> - my $name = $args{'enum'};
> - print "\n\n.. c:enum:: " . $name . "\n\n";
> -
> - print_lineno($declaration_start_line);
> - $lineprefix = " ";
> - output_highlight_rst($args{'purpose'});
> - print "\n";
> -
> - print ".. container:: kernelindent\n\n";
> - $outer = $lineprefix . " ";
> - $lineprefix = $outer . " ";
> - print $outer . "**Constants**\n\n";
> - foreach $parameter (@{$args{'parameterlist'}}) {
> - print $outer . "``$parameter``\n";
> -
> - if ($args{'parameterdescs'}{$parameter} ne $undescribed) {
> - output_highlight_rst($args{'parameterdescs'}{$parameter});
> - } else {
> - print $lineprefix . "*undescribed*\n";
> - }
> - print "\n";
> - }
> - print "\n";
> - $lineprefix = $oldprefix;
> - output_section_rst(@_);
> -}
> -
> -sub output_typedef_rst(%) {
> - my %args = %{$_[0]};
> - my ($parameter);
> - my $oldprefix = $lineprefix;
> - my $name;
> -
> - $name = $args{'typedef'};
> -
> - print "\n\n.. c:type:: " . $name . "\n\n";
> - print_lineno($declaration_start_line);
> - $lineprefix = " ";
> - output_highlight_rst($args{'purpose'});
> - print "\n";
> -
> - $lineprefix = $oldprefix;
> - output_section_rst(@_);
> -}
> -
> -sub output_struct_rst(%) {
> - my %args = %{$_[0]};
> - my ($parameter);
> - my $oldprefix = $lineprefix;
> -
> - my $name = $args{'struct'};
> - if ($args{'type'} eq 'union') {
> - print "\n\n.. c:union:: " . $name . "\n\n";
> - } else {
> - print "\n\n.. c:struct:: " . $name . "\n\n";
> - }
> -
> - print_lineno($declaration_start_line);
> - $lineprefix = " ";
> - output_highlight_rst($args{'purpose'});
> - print "\n";
> -
> - print ".. container:: kernelindent\n\n";
> - print $lineprefix . "**Definition**::\n\n";
> - my $declaration = $args{'definition'};
> - $lineprefix = $lineprefix . " ";
> - $declaration =~ s/\t/$lineprefix/g;
> - print $lineprefix . $args{'type'} . " " . $args{'struct'} . " {\n$declaration" . $lineprefix . "};\n\n";
> -
> - $lineprefix = " ";
> - print $lineprefix . "**Members**\n\n";
> - foreach $parameter (@{$args{'parameterlist'}}) {
> - ($parameter =~ /^#/) && next;
> -
> - my $parameter_name = $parameter;
> - $parameter_name =~ s/\[.*//;
> -
> - ($args{'parameterdescs'}{$parameter_name} ne $undescribed) || next;
> - $type = $args{'parametertypes'}{$parameter};
> - print_lineno($parameterdesc_start_lines{$parameter_name});
> - print $lineprefix . "``" . $parameter . "``\n";
> - $lineprefix = " ";
> - output_highlight_rst($args{'parameterdescs'}{$parameter_name});
> - $lineprefix = " ";
> - print "\n";
> - }
> - print "\n";
> -
> - $lineprefix = $oldprefix;
> - output_section_rst(@_);
> -}
> -
> -## none mode output functions
> -
> -sub output_function_none(%) {
> -}
> -
> -sub output_enum_none(%) {
> -}
> -
> -sub output_typedef_none(%) {
> -}
> -
> -sub output_struct_none(%) {
> -}
> -
> -sub output_blockhead_none(%) {
> -}
> -
> -##
> -# generic output function for all types (function, struct/union, typedef, enum);
> -# calls the generated, variable output_ function name based on
> -# functype and output_mode
> -sub output_declaration {
> - no strict 'refs';
> - my $name = shift;
> - my $functype = shift;
> - my $func = "output_${functype}_$output_mode";
> -
> - return if (defined($nosymbol_table{$name}));
> -
> - if (($output_selection == OUTPUT_ALL) ||
> - (($output_selection == OUTPUT_INCLUDE ||
> - $output_selection == OUTPUT_EXPORTED) &&
> - defined($function_table{$name})) ||
> - ($output_selection == OUTPUT_INTERNAL &&
> - !($functype eq "function" && defined($function_table{$name}))))
> - {
> - &$func(@_);
> - $section_counter++;
> - }
> -}
> -
> -##
> -# generic output function - calls the right one based on current output mode.
> -sub output_blockhead {
> - no strict 'refs';
> - my $func = "output_blockhead_" . $output_mode;
> - &$func(@_);
> - $section_counter++;
> -}
> -
> -##
> -# takes a declaration (struct, union, enum, typedef) and
> -# invokes the right handler. NOT called for functions.
> -sub dump_declaration($$) {
> - no strict 'refs';
> - my ($prototype, $file) = @_;
> - my $func = "dump_" . $decl_type;
> - &$func(@_);
> -}
> -
> -sub dump_union($$) {
> - dump_struct(@_);
> -}
> -
> -sub dump_struct($$) {
> - my $x = shift;
> - my $file = shift;
> - my $decl_type;
> - my $members;
> - my $type = qr{struct|union};
> - # For capturing struct/union definition body, i.e. "{members*}qualifiers*"
> - my $qualifiers = qr{$attribute|__packed|__aligned|____cacheline_aligned_in_smp|____cacheline_aligned};
> - my $definition_body = qr{\{(.*)\}\s*$qualifiers*};
> - my $struct_members = qr{($type)([^\{\};]+)\{([^\{\}]*)\}([^\{\}\;]*)\;};
> -
> - if ($x =~ /($type)\s+(\w+)\s*$definition_body/) {
> - $decl_type = $1;
> - $declaration_name = $2;
> - $members = $3;
> - } elsif ($x =~ /typedef\s+($type)\s*$definition_body\s*(\w+)\s*;/) {
> - $decl_type = $1;
> - $declaration_name = $3;
> - $members = $2;
> - }
> -
> - if ($members) {
> - if ($identifier ne $declaration_name) {
> - emit_warning("${file}:$.", "expecting prototype for $decl_type $identifier. Prototype was for $decl_type $declaration_name instead\n");
> - return;
> - }
> -
> - # ignore members marked private:
> - $members =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
> - $members =~ s/\/\*\s*private:.*//gosi;
> - # strip comments:
> - $members =~ s/\/\*.*?\*\///gos;
> - # strip attributes
> - $members =~ s/\s*$attribute/ /gi;
> - $members =~ s/\s*__aligned\s*\([^;]*\)/ /gos;
> - $members =~ s/\s*__counted_by\s*\([^;]*\)/ /gos;
> - $members =~ s/\s*__counted_by_(le|be)\s*\([^;]*\)/ /gos;
> - $members =~ s/\s*__packed\s*/ /gos;
> - $members =~ s/\s*CRYPTO_MINALIGN_ATTR/ /gos;
> - $members =~ s/\s*____cacheline_aligned_in_smp/ /gos;
> - $members =~ s/\s*____cacheline_aligned/ /gos;
> - # unwrap struct_group():
> - # - first eat non-declaration parameters and rewrite for final match
> - # - then remove macro, outer parens, and trailing semicolon
> - $members =~ s/\bstruct_group\s*\(([^,]*,)/STRUCT_GROUP(/gos;
> - $members =~ s/\bstruct_group_attr\s*\(([^,]*,){2}/STRUCT_GROUP(/gos;
> - $members =~ s/\bstruct_group_tagged\s*\(([^,]*),([^,]*),/struct $1 $2; STRUCT_GROUP(/gos;
> - $members =~ s/\b__struct_group\s*\(([^,]*,){3}/STRUCT_GROUP(/gos;
> - $members =~ s/\bSTRUCT_GROUP(\(((?:(?>[^)(]+)|(?1))*)\))[^;]*;/$2/gos;
> -
> - my $args = qr{([^,)]+)};
> - # replace DECLARE_BITMAP
> - $members =~ s/__ETHTOOL_DECLARE_LINK_MODE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, __ETHTOOL_LINK_MODE_MASK_NBITS)/gos;
> - $members =~ s/DECLARE_PHY_INTERFACE_MASK\s*\(([^\)]+)\)/DECLARE_BITMAP($1, PHY_INTERFACE_MODE_MAX)/gos;
> - $members =~ s/DECLARE_BITMAP\s*\($args,\s*$args\)/unsigned long $1\[BITS_TO_LONGS($2)\]/gos;
> - # replace DECLARE_HASHTABLE
> - $members =~ s/DECLARE_HASHTABLE\s*\($args,\s*$args\)/unsigned long $1\[1 << (($2) - 1)\]/gos;
> - # replace DECLARE_KFIFO
> - $members =~ s/DECLARE_KFIFO\s*\($args,\s*$args,\s*$args\)/$2 \*$1/gos;
> - # replace DECLARE_KFIFO_PTR
> - $members =~ s/DECLARE_KFIFO_PTR\s*\($args,\s*$args\)/$2 \*$1/gos;
> - # replace DECLARE_FLEX_ARRAY
> - $members =~ s/(?:__)?DECLARE_FLEX_ARRAY\s*\($args,\s*$args\)/$1 $2\[\]/gos;
> - #replace DEFINE_DMA_UNMAP_ADDR
> - $members =~ s/DEFINE_DMA_UNMAP_ADDR\s*\($args\)/dma_addr_t $1/gos;
> - #replace DEFINE_DMA_UNMAP_LEN
> - $members =~ s/DEFINE_DMA_UNMAP_LEN\s*\($args\)/__u32 $1/gos;
> - my $declaration = $members;
> -
> - # Split nested struct/union elements as newer ones
> - while ($members =~ m/$struct_members/) {
> - my $newmember;
> - my $maintype = $1;
> - my $ids = $4;
> - my $content = $3;
> - foreach my $id(split /,/, $ids) {
> - $newmember .= "$maintype $id; ";
> -
> - $id =~ s/[:\[].*//;
> - $id =~ s/^\s*\**(\S+)\s*/$1/;
> - foreach my $arg (split /;/, $content) {
> - next if ($arg =~ m/^\s*$/);
> - if ($arg =~ m/^([^\(]+\(\*?\s*)([\w\.]*)(\s*\).*)/) {
> - # pointer-to-function
> - my $type = $1;
> - my $name = $2;
> - my $extra = $3;
> - next if (!$name);
> - if ($id =~ m/^\s*$/) {
> - # anonymous struct/union
> - $newmember .= "$type$name$extra; ";
> - } else {
> - $newmember .= "$type$id.$name$extra; ";
> - }
> - } else {
> - my $type;
> - my $names;
> - $arg =~ s/^\s+//;
> - $arg =~ s/\s+$//;
> - # Handle bitmaps
> - $arg =~ s/:\s*\d+\s*//g;
> - # Handle arrays
> - $arg =~ 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 {
> - $newmember .= "$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_members/$newmember/;
> - }
> -
> - # Ignore other nested elements, like enums
> - $members =~ s/(\{[^\{\}]*\})//g;
> -
> - create_parameterlist($members, ';', $file, $declaration_name);
> - check_sections($file, $declaration_name, $decl_type, $sectcheck, $struct_actual);
> -
> - # Adjust declaration for better display
> - $declaration =~ s/([\{;])/$1\n/g;
> - $declaration =~ s/\}\s+;/};/g;
> - # Better handle inlined enums
> - do {} while ($declaration =~ s/(enum\s+\{[^\}]+),([^\n])/$1,\n$2/);
> -
> - my @def_args = split /\n/, $declaration;
> - my $level = 1;
> - $declaration = "";
> - foreach my $clause (@def_args) {
> - $clause =~ s/^\s+//;
> - $clause =~ s/\s+$//;
> - $clause =~ s/\s+/ /;
> - next if (!$clause);
> - $level-- if ($clause =~ m/(\})/ && $level > 1);
> - if (!($clause =~ m/^\s*#/)) {
> - $declaration .= "\t" x $level;
> - }
> - $declaration .= "\t" . $clause . "\n";
> - $level++ if ($clause =~ m/(\{)/ && !($clause =~m/\}/));
> - }
> - output_declaration($declaration_name,
> - 'struct',
> - {'struct' => $declaration_name,
> - 'module' => $modulename,
> - 'definition' => $declaration,
> - 'parameterlist' => \@parameterlist,
> - 'parameterdescs' => \%parameterdescs,
> - 'parametertypes' => \%parametertypes,
> - 'sectionlist' => \@sectionlist,
> - 'sections' => \%sections,
> - 'purpose' => $declaration_purpose,
> - 'type' => $decl_type
> - });
> - } else {
> - print STDERR "${file}:$.: error: Cannot parse struct or union!\n";
> - ++$errors;
> - }
> -}
> -
> -
> -sub show_warnings($$) {
> - my $functype = shift;
> - my $name = shift;
> -
> - return 0 if (defined($nosymbol_table{$name}));
> -
> - return 1 if ($output_selection == OUTPUT_ALL);
> -
> - if ($output_selection == OUTPUT_EXPORTED) {
> - if (defined($function_table{$name})) {
> - return 1;
> - } else {
> - return 0;
> - }
> - }
> - if ($output_selection == OUTPUT_INTERNAL) {
> - if (!($functype eq "function" && defined($function_table{$name}))) {
> - return 1;
> - } else {
> - return 0;
> - }
> - }
> - if ($output_selection == OUTPUT_INCLUDE) {
> - if (defined($function_table{$name})) {
> - return 1;
> - } else {
> - return 0;
> - }
> - }
> - die("Please add the new output type at show_warnings()");
> -}
> -
> -sub dump_enum($$) {
> - my $x = shift;
> - my $file = shift;
> - my $members;
> -
> - # ignore members marked private:
> - $x =~ s/\/\*\s*private:.*?\/\*\s*public:.*?\*\///gosi;
> - $x =~ s/\/\*\s*private:.*}/}/gosi;
> -
> - $x =~ s@/\*.*?\*/@@gos; # strip comments.
> - # strip #define macros inside enums
> - $x =~ s@#\s*((define|ifdef|if)\s+|endif)[^;]*;@@gos;
> -
> - if ($x =~ /typedef\s+enum\s*\{(.*)\}\s*(\w*)\s*;/) {
> - $declaration_name = $2;
> - $members = $1;
> - } elsif ($x =~ /enum\s+(\w*)\s*\{(.*)\}/) {
> - $declaration_name = $1;
> - $members = $2;
> - }
> -
> - if ($members) {
> - if ($identifier ne $declaration_name) {
> - if ($identifier eq "") {
> - emit_warning("${file}:$.", "wrong kernel-doc identifier on line:\n");
> - } else {
> - emit_warning("${file}:$.", "expecting prototype for enum $identifier. Prototype was for enum $declaration_name instead\n");
> - }
> - return;
> - }
> - $declaration_name = "(anonymous)" if ($declaration_name eq "");
> -
> - my %_members;
> -
> - $members =~ s/\s+$//;
> - $members =~ s/\([^;]*?[\)]//g;
> -
> - foreach my $arg (split ',', $members) {
> - $arg =~ s/^\s*(\w+).*/$1/;
> - push @parameterlist, $arg;
> - if (!$parameterdescs{$arg}) {
> - $parameterdescs{$arg} = $undescribed;
> - if (show_warnings("enum", $declaration_name)) {
> - emit_warning("${file}:$.", "Enum value '$arg' not described in enum '$declaration_name'\n");
> - }
> - }
> - $_members{$arg} = 1;
> - }
> -
> - while (my ($k, $v) = each %parameterdescs) {
> - if (!exists($_members{$k})) {
> - if (show_warnings("enum", $declaration_name)) {
> - emit_warning("${file}:$.", "Excess enum value '$k' description in '$declaration_name'\n");
> - }
> - }
> - }
> -
> - output_declaration($declaration_name,
> - 'enum',
> - {'enum' => $declaration_name,
> - 'module' => $modulename,
> - 'parameterlist' => \@parameterlist,
> - 'parameterdescs' => \%parameterdescs,
> - 'sectionlist' => \@sectionlist,
> - 'sections' => \%sections,
> - 'purpose' => $declaration_purpose
> - });
> - } else {
> - print STDERR "${file}:$.: error: Cannot parse enum!\n";
> - ++$errors;
> - }
> -}
> -
> -my $typedef_type = qr { ((?:\s+[\w\*]+\b){0,7}\s+(?:\w+\b|\*+))\s* }x;
> -my $typedef_ident = qr { \*?\s*(\w\S+)\s* }x;
> -my $typedef_args = qr { \s*\((.*)\); }x;
> -
> -my $typedef1 = qr { typedef$typedef_type\($typedef_ident\)$typedef_args }x;
> -my $typedef2 = qr { typedef$typedef_type$typedef_ident$typedef_args }x;
> -
> -sub dump_typedef($$) {
> - my $x = shift;
> - my $file = shift;
> -
> - $x =~ s@/\*.*?\*/@@gos; # strip comments.
> -
> - # Parse function typedef prototypes
> - if ($x =~ $typedef1 || $x =~ $typedef2) {
> - $return_type = $1;
> - $declaration_name = $2;
> - my $args = $3;
> - $return_type =~ s/^\s+//;
> -
> - if ($identifier ne $declaration_name) {
> - emit_warning("${file}:$.", "expecting prototype for typedef $identifier. Prototype was for typedef $declaration_name instead\n");
> - return;
> - }
> -
> - create_parameterlist($args, ',', $file, $declaration_name);
> -
> - output_declaration($declaration_name,
> - 'function',
> - {'function' => $declaration_name,
> - 'typedef' => 1,
> - 'module' => $modulename,
> - 'functiontype' => $return_type,
> - 'parameterlist' => \@parameterlist,
> - 'parameterdescs' => \%parameterdescs,
> - 'parametertypes' => \%parametertypes,
> - 'sectionlist' => \@sectionlist,
> - 'sections' => \%sections,
> - 'purpose' => $declaration_purpose
> - });
> - return;
> - }
> -
> - while (($x =~ /\(*.\)\s*;$/) || ($x =~ /\[*.\]\s*;$/)) {
> - $x =~ s/\(*.\)\s*;$/;/;
> - $x =~ s/\[*.\]\s*;$/;/;
> - }
> -
> - if ($x =~ /typedef.*\s+(\w+)\s*;/) {
> - $declaration_name = $1;
> -
> - if ($identifier ne $declaration_name) {
> - emit_warning("${file}:$.", "expecting prototype for typedef $identifier. Prototype was for typedef $declaration_name instead\n");
> - return;
> - }
> -
> - output_declaration($declaration_name,
> - 'typedef',
> - {'typedef' => $declaration_name,
> - 'module' => $modulename,
> - 'sectionlist' => \@sectionlist,
> - 'sections' => \%sections,
> - 'purpose' => $declaration_purpose
> - });
> - } else {
> - print STDERR "${file}:$.: error: Cannot parse typedef!\n";
> - ++$errors;
> - }
> -}
> -
> -sub save_struct_actual($) {
> - my $actual = shift;
> -
> - # strip all spaces from the actual param so that it looks like one string item
> - $actual =~ s/\s*//g;
> - $struct_actual = $struct_actual . $actual . " ";
> -}
> -
> -sub create_parameterlist($$$$) {
> - my $args = shift;
> - my $splitter = shift;
> - my $file = shift;
> - my $declaration_name = shift;
> - my $type;
> - my $param;
> -
> - # temporarily replace commas inside function pointer definition
> - my $arg_expr = qr{\([^\),]+};
> - while ($args =~ /$arg_expr,/) {
> - $args =~ s/($arg_expr),/$1#/g;
> - }
> -
> - foreach my $arg (split($splitter, $args)) {
> - # strip comments
> - $arg =~ s/\/\*.*\*\///;
> - # ignore argument attributes
> - $arg =~ s/\sPOS0?\s/ /;
> - # strip leading/trailing spaces
> - $arg =~ s/^\s*//;
> - $arg =~ s/\s*$//;
> - $arg =~ s/\s+/ /;
> -
> - if ($arg =~ /^#/) {
> - # Treat preprocessor directive as a typeless variable just to fill
> - # corresponding data structures "correctly". Catch it later in
> - # output_* subs.
> - push_parameter($arg, "", "", $file);
> - } elsif ($arg =~ m/\(.+\)\s*\(/) {
> - # pointer-to-function
> - $arg =~ tr/#/,/;
> - $arg =~ m/[^\(]+\(\*?\s*([\w\[\]\.]*)\s*\)/;
> - $param = $1;
> - $type = $arg;
> - $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
> - save_struct_actual($param);
> - push_parameter($param, $type, $arg, $file, $declaration_name);
> - } elsif ($arg =~ m/\(.+\)\s*\[/) {
> - # array-of-pointers
> - $arg =~ tr/#/,/;
> - $arg =~ m/[^\(]+\(\s*\*\s*([\w\[\]\.]*?)\s*(\s*\[\s*[\w]+\s*\]\s*)*\)/;
> - $param = $1;
> - $type = $arg;
> - $type =~ s/([^\(]+\(\*?)\s*$param/$1/;
> - save_struct_actual($param);
> - push_parameter($param, $type, $arg, $file, $declaration_name);
> - } elsif ($arg) {
> - $arg =~ s/\s*:\s*/:/g;
> - $arg =~ s/\s*\[/\[/g;
> -
> - my @args = split('\s*,\s*', $arg);
> - if ($args[0] =~ m/\*/) {
> - $args[0] =~ s/(\*+)\s*/ $1/;
> - }
> -
> - my @first_arg;
> - if ($args[0] =~ /^(.*\s+)(.*?\[.*\].*)$/) {
> - shift @args;
> - push(@first_arg, split('\s+', $1));
> - push(@first_arg, $2);
> - } else {
> - @first_arg = split('\s+', shift @args);
> - }
> -
> - unshift(@args, pop @first_arg);
> - $type = join " ", @first_arg;
> -
> - foreach $param (@args) {
> - if ($param =~ m/^(\*+)\s*(.*)/) {
> - save_struct_actual($2);
> -
> - push_parameter($2, "$type $1", $arg, $file, $declaration_name);
> - } elsif ($param =~ m/(.*?):(\w+)/) {
> - if ($type ne "") { # skip unnamed bit-fields
> - save_struct_actual($1);
> - push_parameter($1, "$type:$2", $arg, $file, $declaration_name)
> - }
> - } else {
> - save_struct_actual($param);
> - push_parameter($param, $type, $arg, $file, $declaration_name);
> - }
> - }
> - }
> - }
> -}
> -
> -sub push_parameter($$$$$) {
> - my $param = shift;
> - my $type = shift;
> - my $org_arg = shift;
> - my $file = shift;
> - my $declaration_name = shift;
> -
> - if (($anon_struct_union == 1) && ($type eq "") &&
> - ($param eq "}")) {
> - return; # ignore the ending }; from anon. struct/union
> - }
> -
> - $anon_struct_union = 0;
> - $param =~ s/[\[\)].*//;
> -
> - if ($type eq "" && $param =~ /\.\.\.$/)
> - {
> - if (!$param =~ /\w\.\.\.$/) {
> - # handles unnamed variable parameters
> - $param = "...";
> - } elsif ($param =~ /\w\.\.\.$/) {
> - # for named variable parameters of the form `x...`, remove the dots
> - $param =~ s/\.\.\.$//;
> - }
> - if (!defined $parameterdescs{$param} || $parameterdescs{$param} eq "") {
> - $parameterdescs{$param} = "variable arguments";
> - }
> - }
> - elsif ($type eq "" && ($param eq "" or $param eq "void"))
> - {
> - $param="void";
> - $parameterdescs{void} = "no arguments";
> - }
> - elsif ($type eq "" && ($param eq "struct" or $param eq "union"))
> - # handle unnamed (anonymous) union or struct:
> - {
> - $type = $param;
> - $param = "{unnamed_" . $param . "}";
> - $parameterdescs{$param} = "anonymous\n";
> - $anon_struct_union = 1;
> - }
> - elsif ($param =~ "__cacheline_group" )
> - # handle cache group enforcing variables: they do not need be described in header files
> - {
> - return; # ignore __cacheline_group_begin and __cacheline_group_end
> - }
> -
> - # warn if parameter has no description
> - # (but ignore ones starting with # as these are not parameters
> - # but inline preprocessor statements);
> - # Note: It will also ignore void params and unnamed structs/unions
> - if (!defined $parameterdescs{$param} && $param !~ /^#/) {
> - $parameterdescs{$param} = $undescribed;
> -
> - if (show_warnings($type, $declaration_name) && $param !~ /\./) {
> - emit_warning("${file}:$.", "Function parameter or struct member '$param' not described in '$declaration_name'\n");
> - }
> - }
> -
> - # strip spaces from $param so that it is one continuous string
> - # on @parameterlist;
> - # this fixes a problem where check_sections() cannot find
> - # a parameter like "addr[6 + 2]" because it actually appears
> - # as "addr[6", "+", "2]" on the parameter list;
> - # but it's better to maintain the param string unchanged for output,
> - # so just weaken the string compare in check_sections() to ignore
> - # "[blah" in a parameter string;
> - ###$param =~ s/\s*//g;
> - push @parameterlist, $param;
> - $org_arg =~ s/\s\s+/ /g;
> - $parametertypes{$param} = $org_arg;
> -}
> -
> -sub check_sections($$$$$) {
> - my ($file, $decl_name, $decl_type, $sectcheck, $prmscheck) = @_;
> - my @sects = split ' ', $sectcheck;
> - my @prms = split ' ', $prmscheck;
> - my $err;
> - my ($px, $sx);
> - my $prm_clean; # strip trailing "[array size]" and/or beginning "*"
> -
> - foreach $sx (0 .. $#sects) {
> - $err = 1;
> - foreach $px (0 .. $#prms) {
> - $prm_clean = $prms[$px];
> - $prm_clean =~ s/\[.*\]//;
> - $prm_clean =~ s/$attribute//i;
> - # ignore array size in a parameter string;
> - # however, the original param string may contain
> - # spaces, e.g.: addr[6 + 2]
> - # and this appears in @prms as "addr[6" since the
> - # parameter list is split at spaces;
> - # hence just ignore "[..." for the sections check;
> - $prm_clean =~ s/\[.*//;
> -
> - ##$prm_clean =~ s/^\**//;
> - if ($prm_clean eq $sects[$sx]) {
> - $err = 0;
> - last;
> - }
> - }
> - if ($err) {
> - if ($decl_type eq "function") {
> - emit_warning("${file}:$.",
> - "Excess function parameter " .
> - "'$sects[$sx]' " .
> - "description in '$decl_name'\n");
> - } elsif (($decl_type eq "struct") or
> - ($decl_type eq "union")) {
> - emit_warning("${file}:$.",
> - "Excess $decl_type member " .
> - "'$sects[$sx]' " .
> - "description in '$decl_name'\n");
> - }
> - }
> - }
> -}
> -
> -##
> -# Checks the section describing the return value of a function.
> -sub check_return_section {
> - my $file = shift;
> - my $declaration_name = shift;
> - my $return_type = shift;
> -
> - # Ignore an empty return type (It's a macro)
> - # Ignore functions with a "void" return type. (But don't ignore "void *")
> - if (($return_type eq "") || ($return_type =~ /void\s*\w*\s*$/)) {
> - return;
> - }
> -
> - if (!defined($sections{$section_return}) ||
> - $sections{$section_return} eq "")
> - {
> - emit_warning("${file}:$.",
> - "No description found for return value of " .
> - "'$declaration_name'\n");
> - }
> -}
> -
> -##
> -# takes a function prototype and the name of the current file being
> -# processed and spits out all the details stored in the global
> -# arrays/hashes.
> -sub dump_function($$) {
> - my $prototype = shift;
> - my $file = shift;
> - my $func_macro = 0;
> -
> - print_lineno($new_start_line);
> -
> - $prototype =~ s/^static +//;
> - $prototype =~ s/^extern +//;
> - $prototype =~ s/^asmlinkage +//;
> - $prototype =~ s/^inline +//;
> - $prototype =~ s/^__inline__ +//;
> - $prototype =~ s/^__inline +//;
> - $prototype =~ s/^__always_inline +//;
> - $prototype =~ s/^noinline +//;
> - $prototype =~ s/^__FORTIFY_INLINE +//;
> - $prototype =~ s/__init +//;
> - $prototype =~ s/__init_or_module +//;
> - $prototype =~ s/__deprecated +//;
> - $prototype =~ s/__flatten +//;
> - $prototype =~ s/__meminit +//;
> - $prototype =~ s/__must_check +//;
> - $prototype =~ s/__weak +//;
> - $prototype =~ s/__sched +//;
> - $prototype =~ s/_noprof//;
> - $prototype =~ s/__printf\s*\(\s*\d*\s*,\s*\d*\s*\) +//;
> - $prototype =~ s/__(?:re)?alloc_size\s*\(\s*\d+\s*(?:,\s*\d+\s*)?\) +//;
> - $prototype =~ s/__diagnose_as\s*\(\s*\S+\s*(?:,\s*\d+\s*)*\) +//;
> - $prototype =~ s/DECL_BUCKET_PARAMS\s*\(\s*(\S+)\s*,\s*(\S+)\s*\)/$1, $2/;
> - my $define = $prototype =~ s/^#\s*define\s+//; #ak added
> - $prototype =~ s/__attribute_const__ +//;
> - $prototype =~ s/__attribute__\s*\(\(
> - (?:
> - [\w\s]++ # attribute name
> - (?:\([^)]*+\))? # attribute arguments
> - \s*+,? # optional comma at the end
> - )+
> - \)\)\s+//x;
> -
> - # Yes, this truly is vile. We are looking for:
> - # 1. Return type (may be nothing if we're looking at a macro)
> - # 2. Function name
> - # 3. Function parameters.
> - #
> - # All the while we have to watch out for function pointer parameters
> - # (which IIRC is what the two sections are for), C types (these
> - # regexps don't even start to express all the possibilities), and
> - # so on.
> - #
> - # If you mess with these regexps, it's a good idea to check that
> - # the following functions' documentation still comes out right:
> - # - parport_register_device (function pointer parameters)
> - # - atomic_set (macro)
> - # - pci_match_device, __copy_to_user (long return type)
> - my $name = qr{[a-zA-Z0-9_~:]+};
> - my $prototype_end1 = qr{[^\(]*};
> - my $prototype_end2 = qr{[^\{]*};
> - my $prototype_end = qr{\(($prototype_end1|$prototype_end2)\)};
> - my $type1 = qr{[\w\s]+};
> - my $type2 = qr{$type1\*+};
> -
> - if ($define && $prototype =~ m/^()($name)\s+/) {
> - # This is an object-like macro, it has no return type and no parameter
> - # list.
> - # Function-like macros are not allowed to have spaces between
> - # declaration_name and opening parenthesis (notice the \s+).
> - $return_type = $1;
> - $declaration_name = $2;
> - $func_macro = 1;
> - } elsif ($prototype =~ m/^()($name)\s*$prototype_end/ ||
> - $prototype =~ m/^($type1)\s+($name)\s*$prototype_end/ ||
> - $prototype =~ m/^($type2+)\s*($name)\s*$prototype_end/) {
> - $return_type = $1;
> - $declaration_name = $2;
> - my $args = $3;
> -
> - create_parameterlist($args, ',', $file, $declaration_name);
> - } else {
> - emit_warning("${file}:$.", "cannot understand function prototype: '$prototype'\n");
> - return;
> - }
> -
> - if ($identifier ne $declaration_name) {
> - emit_warning("${file}:$.", "expecting prototype for $identifier(). Prototype was for $declaration_name() instead\n");
> - return;
> - }
> -
> - my $prms = join " ", @parameterlist;
> - check_sections($file, $declaration_name, "function", $sectcheck, $prms);
> -
> - # This check emits a lot of warnings at the moment, because many
> - # functions don't have a 'Return' doc section. So until the number
> - # of warnings goes sufficiently down, the check is only performed in
> - # -Wreturn mode.
> - # TODO: always perform the check.
> - if ($Wreturn && !$func_macro) {
> - check_return_section($file, $declaration_name, $return_type);
> - }
> -
> - # The function parser can be called with a typedef parameter.
> - # Handle it.
> - if ($return_type =~ /typedef/) {
> - output_declaration($declaration_name,
> - 'function',
> - {'function' => $declaration_name,
> - 'typedef' => 1,
> - 'module' => $modulename,
> - 'functiontype' => $return_type,
> - 'parameterlist' => \@parameterlist,
> - 'parameterdescs' => \%parameterdescs,
> - 'parametertypes' => \%parametertypes,
> - 'sectionlist' => \@sectionlist,
> - 'sections' => \%sections,
> - 'purpose' => $declaration_purpose,
> - 'func_macro' => $func_macro
> - });
> - } else {
> - output_declaration($declaration_name,
> - 'function',
> - {'function' => $declaration_name,
> - 'module' => $modulename,
> - 'functiontype' => $return_type,
> - 'parameterlist' => \@parameterlist,
> - 'parameterdescs' => \%parameterdescs,
> - 'parametertypes' => \%parametertypes,
> - 'sectionlist' => \@sectionlist,
> - 'sections' => \%sections,
> - 'purpose' => $declaration_purpose,
> - 'func_macro' => $func_macro
> - });
> - }
> -}
> -
> -sub reset_state {
> - $function = "";
> - %parameterdescs = ();
> - %parametertypes = ();
> - @parameterlist = ();
> - %sections = ();
> - @sectionlist = ();
> - $sectcheck = "";
> - $struct_actual = "";
> - $prototype = "";
> -
> - $state = STATE_NORMAL;
> - $inline_doc_state = STATE_INLINE_NA;
> -}
> -
> -sub tracepoint_munge($) {
> - my $file = shift;
> - my $tracepointname = 0;
> - my $tracepointargs = 0;
> -
> - if ($prototype =~ m/TRACE_EVENT\((.*?),/) {
> - $tracepointname = $1;
> - }
> - if ($prototype =~ m/DEFINE_SINGLE_EVENT\((.*?),/) {
> - $tracepointname = $1;
> - }
> - if ($prototype =~ m/DEFINE_EVENT\((.*?),(.*?),/) {
> - $tracepointname = $2;
> - }
> - $tracepointname =~ s/^\s+//; #strip leading whitespace
> - if ($prototype =~ m/TP_PROTO\((.*?)\)/) {
> - $tracepointargs = $1;
> - }
> - if (($tracepointname eq 0) || ($tracepointargs eq 0)) {
> - emit_warning("${file}:$.", "Unrecognized tracepoint format: \n".
> - "$prototype\n");
> - } else {
> - $prototype = "static inline void trace_$tracepointname($tracepointargs)";
> - $identifier = "trace_$identifier";
> - }
> -}
> -
> -sub syscall_munge() {
> - my $void = 0;
> -
> - $prototype =~ s@[\r\n]+@ @gos; # strip newlines/CR's
> -## if ($prototype =~ m/SYSCALL_DEFINE0\s*\(\s*(a-zA-Z0-9_)*\s*\)/) {
> - if ($prototype =~ m/SYSCALL_DEFINE0/) {
> - $void = 1;
> -## $prototype = "long sys_$1(void)";
> - }
> -
> - $prototype =~ s/SYSCALL_DEFINE.*\(/long sys_/; # fix return type & func name
> - if ($prototype =~ m/long (sys_.*?),/) {
> - $prototype =~ s/,/\(/;
> - } elsif ($void) {
> - $prototype =~ s/\)/\(void\)/;
> - }
> -
> - # now delete all of the odd-number commas in $prototype
> - # so that arg types & arg names don't have a comma between them
> - my $count = 0;
> - my $len = length($prototype);
> - if ($void) {
> - $len = 0; # skip the for-loop
> - }
> - for (my $ix = 0; $ix < $len; $ix++) {
> - if (substr($prototype, $ix, 1) eq ',') {
> - $count++;
> - if ($count % 2 == 1) {
> - substr($prototype, $ix, 1) = ' ';
> - }
> - }
> - }
> -}
> -
> -sub process_proto_function($$) {
> - my $x = shift;
> - my $file = shift;
> -
> - $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
> -
> - if ($x =~ /^#/ && $x !~ /^#\s*define/) {
> - # do nothing
> - } elsif ($x =~ /([^\{]*)/) {
> - $prototype .= $1;
> - }
> -
> - if (($x =~ /\{/) || ($x =~ /\#\s*define/) || ($x =~ /;/)) {
> - $prototype =~ s@/\*.*?\*/@@gos; # strip comments.
> - $prototype =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
> - $prototype =~ s@^\s+@@gos; # strip leading spaces
> -
> - # Handle prototypes for function pointers like:
> - # int (*pcs_config)(struct foo)
> - $prototype =~ s@^(\S+\s+)\(\s*\*(\S+)\)@$1$2@gos;
> -
> - if ($prototype =~ /SYSCALL_DEFINE/) {
> - syscall_munge();
> - }
> - if ($prototype =~ /TRACE_EVENT/ || $prototype =~ /DEFINE_EVENT/ ||
> - $prototype =~ /DEFINE_SINGLE_EVENT/)
> - {
> - tracepoint_munge($file);
> - }
> - dump_function($prototype, $file);
> - reset_state();
> - }
> -}
> -
> -sub process_proto_type($$) {
> - my $x = shift;
> - my $file = shift;
> -
> - $x =~ s@[\r\n]+@ @gos; # strip newlines/cr's.
> - $x =~ s@^\s+@@gos; # strip leading spaces
> - $x =~ s@\s+$@@gos; # strip trailing spaces
> - $x =~ s@\/\/.*$@@gos; # strip C99-style comments to end of line
> -
> - if ($x =~ /^#/) {
> - # To distinguish preprocessor directive from regular declaration later.
> - $x .= ";";
> - }
> -
> - while (1) {
> - if ( $x =~ /([^\{\};]*)([\{\};])(.*)/ ) {
> - if( length $prototype ) {
> - $prototype .= " "
> - }
> - $prototype .= $1 . $2;
> - ($2 eq '{') && $brcount++;
> - ($2 eq '}') && $brcount--;
> - if (($2 eq ';') && ($brcount == 0)) {
> - dump_declaration($prototype, $file);
> - reset_state();
> - last;
> - }
> - $x = $3;
> - } else {
> - $prototype .= $x;
> - last;
> - }
> - }
> -}
> -
> -
> -sub map_filename($) {
> - my $file;
> - my ($orig_file) = @_;
> -
> - if (defined($ENV{'SRCTREE'})) {
> - $file = "$ENV{'SRCTREE'}" . "/" . $orig_file;
> - } else {
> - $file = $orig_file;
> - }
> -
> - return $file;
> -}
> -
> -sub process_export_file($) {
> - my ($orig_file) = @_;
> - my $file = map_filename($orig_file);
> -
> - if (!open(IN,"<$file")) {
> - print STDERR "Error: Cannot open file $file\n";
> - ++$errors;
> - return;
> - }
> -
> - while (<IN>) {
> - if (/$export_symbol/) {
> - next if (defined($nosymbol_table{$2}));
> - $function_table{$2} = 1;
> - }
> - if (/$export_symbol_ns/) {
> - next if (defined($nosymbol_table{$2}));
> - $function_table{$2} = 1;
> - }
> - }
> -
> - close(IN);
> -}
> -
> -#
> -# Parsers for the various processing states.
> -#
> -# STATE_NORMAL: looking for the /** to begin everything.
> -#
> -sub process_normal() {
> - if (/$doc_start/o) {
> - $state = STATE_NAME; # next line is always the function name
> - $declaration_start_line = $. + 1;
> - }
> -}
> -
> -#
> -# STATE_NAME: Looking for the "name - description" line
> -#
> -sub process_name($$) {
> - my $file = shift;
> - my $descr;
> -
> - if (/$doc_block/o) {
> - $state = STATE_DOCBLOCK;
> - $contents = "";
> - $new_start_line = $.;
> -
> - if ( $1 eq "" ) {
> - $section = $section_intro;
> - } else {
> - $section = $1;
> - }
> - } elsif (/$doc_decl/o) {
> - $identifier = $1;
> - my $is_kernel_comment = 0;
> - my $decl_start = qr{$doc_com};
> - # test for pointer declaration type, foo * bar() - desc
> - my $fn_type = qr{\w+\s*\*\s*};
> - my $parenthesis = qr{\(\w*\)};
> - my $decl_end = qr{[-:].*};
> - if (/^$decl_start([\w\s]+?)$parenthesis?\s*$decl_end?$/) {
> - $identifier = $1;
> - }
> - if ($identifier =~ m/^(struct|union|enum|typedef)\b\s*(\S*)/) {
> - $decl_type = $1;
> - $identifier = $2;
> - $is_kernel_comment = 1;
> - }
> - # Look for foo() or static void foo() - description; or misspelt
> - # identifier
> - elsif (/^$decl_start$fn_type?(\w+)\s*$parenthesis?\s*$decl_end?$/ ||
> - /^$decl_start$fn_type?(\w+[^-:]*)$parenthesis?\s*$decl_end$/) {
> - $identifier = $1;
> - $decl_type = 'function';
> - $identifier =~ s/^define\s+//;
> - $is_kernel_comment = 1;
> - }
> - $identifier =~ s/\s+$//;
> -
> - $state = STATE_BODY;
> - # if there's no @param blocks need to set up default section
> - # here
> - $contents = "";
> - $section = $section_default;
> - $new_start_line = $. + 1;
> - if (/[-:](.*)/) {
> - # strip leading/trailing/multiple spaces
> - $descr= $1;
> - $descr =~ s/^\s*//;
> - $descr =~ s/\s*$//;
> - $descr =~ s/\s+/ /g;
> - $declaration_purpose = $descr;
> - $state = STATE_BODY_MAYBE;
> - } else {
> - $declaration_purpose = "";
> - }
> -
> - if (!$is_kernel_comment) {
> - emit_warning("${file}:$.", "This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst\n$_");
> - $state = STATE_NORMAL;
> - }
> -
> - if (($declaration_purpose eq "") && $Wshort_desc) {
> - emit_warning("${file}:$.", "missing initial short description on line:\n$_");
> - }
> -
> - if ($identifier eq "" && $decl_type ne "enum") {
> - emit_warning("${file}:$.", "wrong kernel-doc identifier on line:\n$_");
> - $state = STATE_NORMAL;
> - }
> -
> - if ($verbose) {
> - print STDERR "${file}:$.: info: Scanning doc for $decl_type $identifier\n";
> - }
> - } else {
> - emit_warning("${file}:$.", "Cannot understand $_ on line $. - I thought it was a doc line\n");
> - $state = STATE_NORMAL;
> - }
> -}
> -
> -
> -#
> -# STATE_BODY and STATE_BODY_MAYBE: the bulk of a kerneldoc comment.
> -#
> -sub process_body($$) {
> - my $file = shift;
> -
> - if ($state == STATE_BODY_WITH_BLANK_LINE && /^\s*\*\s?\S/) {
> - dump_section($file, $section, $contents);
> - $section = $section_default;
> - $new_start_line = $.;
> - $contents = "";
> - }
> -
> - if (/$doc_sect/i) { # case insensitive for supported section names
> - $newsection = $1;
> - $newcontents = $2;
> -
> - # map the supported section names to the canonical names
> - if ($newsection =~ m/^description$/i) {
> - $newsection = $section_default;
> - } elsif ($newsection =~ m/^context$/i) {
> - $newsection = $section_context;
> - } elsif ($newsection =~ m/^returns?$/i) {
> - $newsection = $section_return;
> - } elsif ($newsection =~ m/^\@return$/) {
> - # special: @return is a section, not a param description
> - $newsection = $section_return;
> - }
> -
> - if (($contents ne "") && ($contents ne "\n")) {
> - dump_section($file, $section, $contents);
> - $section = $section_default;
> - }
> -
> - $state = STATE_BODY;
> - $contents = $newcontents;
> - $new_start_line = $.;
> - while (substr($contents, 0, 1) eq " ") {
> - $contents = substr($contents, 1);
> - }
> - if ($contents ne "") {
> - $contents .= "\n";
> - }
> - $section = $newsection;
> - $leading_space = undef;
> - } elsif (/$doc_end/) {
> - if (($contents ne "") && ($contents ne "\n")) {
> - dump_section($file, $section, $contents);
> - $section = $section_default;
> - $contents = "";
> - }
> - # look for doc_com + <text> + doc_end:
> - if ($_ =~ m'\s*\*\s*[a-zA-Z_0-9:\.]+\*/') {
> - emit_warning("${file}:$.", "suspicious ending line: $_");
> - }
> -
> - $prototype = "";
> - $state = STATE_PROTO;
> - $brcount = 0;
> - $new_start_line = $. + 1;
> - } elsif (/$doc_content/) {
> - if ($1 eq "") {
> - 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";
> - }
> - } elsif ($state == STATE_BODY_MAYBE) {
> - # Continued declaration purpose
> - chomp($declaration_purpose);
> - $declaration_purpose .= " " . $1;
> - $declaration_purpose =~ s/\s+/ /g;
> - } else {
> - my $cont = $1;
> - if ($section =~ m/^@/ || $section eq $section_context) {
> - if (!defined $leading_space) {
> - if ($cont =~ m/^(\s+)/) {
> - $leading_space = $1;
> - } else {
> - $leading_space = "";
> - }
> - }
> - $cont =~ s/^$leading_space//;
> - }
> - $contents .= $cont . "\n";
> - }
> - } else {
> - # i dont know - bad line? ignore.
> - emit_warning("${file}:$.", "bad line: $_");
> - }
> -}
> -
> -
> -#
> -# STATE_PROTO: reading a function/whatever prototype.
> -#
> -sub process_proto($$) {
> - my $file = shift;
> -
> - if (/$doc_inline_oneline/) {
> - $section = $1;
> - $contents = $2;
> - if ($contents ne "") {
> - $contents .= "\n";
> - dump_section($file, $section, $contents);
> - $section = $section_default;
> - $contents = "";
> - }
> - } elsif (/$doc_inline_start/) {
> - $state = STATE_INLINE;
> - $inline_doc_state = STATE_INLINE_NAME;
> - } elsif ($decl_type eq 'function') {
> - process_proto_function($_, $file);
> - } else {
> - process_proto_type($_, $file);
> - }
> -}
> -
> -#
> -# STATE_DOCBLOCK: within a DOC: block.
> -#
> -sub process_docblock($$) {
> - my $file = shift;
> -
> - if (/$doc_end/) {
> - dump_doc_section($file, $section, $contents);
> - $section = $section_default;
> - $contents = "";
> - $function = "";
> - %parameterdescs = ();
> - %parametertypes = ();
> - @parameterlist = ();
> - %sections = ();
> - @sectionlist = ();
> - $prototype = "";
> - $state = STATE_NORMAL;
> - } elsif (/$doc_content/) {
> - if ( $1 eq "" ) {
> - $contents .= $blankline;
> - } else {
> - $contents .= $1 . "\n";
> - }
> - }
> -}
> -
> -#
> -# STATE_INLINE: docbook comments within a prototype.
> -#
> -sub process_inline($$) {
> - my $file = shift;
> -
> - # First line (state 1) needs to be a @parameter
> - if ($inline_doc_state == STATE_INLINE_NAME && /$doc_inline_sect/o) {
> - $section = $1;
> - $contents = $2;
> - $new_start_line = $.;
> - if ($contents ne "") {
> - while (substr($contents, 0, 1) eq " ") {
> - $contents = substr($contents, 1);
> - }
> - $contents .= "\n";
> - }
> - $inline_doc_state = STATE_INLINE_TEXT;
> - # Documentation block end */
> - } elsif (/$doc_inline_end/) {
> - if (($contents ne "") && ($contents ne "\n")) {
> - dump_section($file, $section, $contents);
> - $section = $section_default;
> - $contents = "";
> - }
> - $state = STATE_PROTO;
> - $inline_doc_state = STATE_INLINE_NA;
> - # Regular text
> - } elsif (/$doc_content/) {
> - if ($inline_doc_state == STATE_INLINE_TEXT) {
> - $contents .= $1 . "\n";
> - # nuke leading blank lines
> - if ($contents =~ /^\s*$/) {
> - $contents = "";
> - }
> - } elsif ($inline_doc_state == STATE_INLINE_NAME) {
> - $inline_doc_state = STATE_INLINE_ERROR;
> - emit_warning("${file}:$.", "Incorrect use of kernel-doc format: $_");
> - }
> - }
> -}
> -
> -
> -sub process_file($) {
> - my $file;
> - my ($orig_file) = @_;
> -
> - $file = map_filename($orig_file);
> -
> - if (!open(IN_FILE,"<$file")) {
> - print STDERR "Error: Cannot open file $file\n";
> - ++$errors;
> - return;
> - }
> -
> - $. = 1;
> -
> - $section_counter = 0;
> - while (<IN_FILE>) {
> - while (!/^ \*/ && s/\\\s*$//) {
> - $_ .= <IN_FILE>;
> - }
> - # Replace tabs by spaces
> - while ($_ =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e) {};
> - # Hand this line to the appropriate state handler
> - if ($state == STATE_NORMAL) {
> - process_normal();
> - } elsif ($state == STATE_NAME) {
> - process_name($file, $_);
> - } elsif ($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, $_);
> - } elsif ($state == STATE_PROTO) {
> - process_proto($file, $_);
> - } elsif ($state == STATE_DOCBLOCK) {
> - process_docblock($file, $_);
> - }
> - }
> -
> - # Make sure we got something interesting.
> - if (!$section_counter && $output_mode ne "none") {
> - if ($output_selection == OUTPUT_INCLUDE) {
> - emit_warning("${file}:1", "'$_' not found\n")
> - for keys %function_table;
> - } else {
> - emit_warning("${file}:1", "no structured comments found\n");
> - }
> - }
> - close IN_FILE;
> -}
> -
> -$kernelversion = get_kernel_version();
> -
> -# generate a sequence of code that will splice in highlighting information
> -# using the s// operator.
> -for (my $k = 0; $k < @highlights; $k++) {
> - my $pattern = $highlights[$k][0];
> - my $result = $highlights[$k][1];
> -# print STDERR "scanning pattern:$pattern, highlight:($result)\n";
> - $dohighlight .= "\$contents =~ s:$pattern:$result:gs;\n";
> -}
> -
> -if ($output_selection == OUTPUT_EXPORTED ||
> - $output_selection == OUTPUT_INTERNAL) {
> -
> - push(@export_file_list, @ARGV);
> -
> - foreach (@export_file_list) {
> - chomp;
> - process_export_file($_);
> - }
> -}
> -
> -foreach (@ARGV) {
> - chomp;
> - process_file($_);
> -}
> -if ($verbose && $errors) {
> - print STDERR "$errors errors\n";
> -}
> -if ($verbose && $warnings) {
> - print STDERR "$warnings warnings\n";
> -}
> -
> -if ($Werror && $warnings) {
> - print STDERR "$warnings warnings as Errors\n";
> - exit($warnings);
> -} else {
> - exit($output_mode eq "none" ? 0 : $errors)
> -}
> -
> -__END__
> -
> -=head1 OPTIONS
> -
> -=head2 Output format selection (mutually exclusive):
> -
> -=over 8
> -
> -=item -man
> -
> -Output troff manual page format.
> -
> -=item -rst
> -
> -Output reStructuredText format. This is the default.
> -
> -=item -none
> -
> -Do not output documentation, only warnings.
> -
> -=back
> -
> -=head2 Output format modifiers
> -
> -=head3 reStructuredText only
> -
> -=head2 Output selection (mutually exclusive):
> -
> -=over 8
> -
> -=item -export
> -
> -Only output documentation for the symbols that have been exported using
> -EXPORT_SYMBOL() and related macros in any input FILE or -export-file FILE.
> -
> -=item -internal
> -
> -Only output documentation for the symbols that have NOT been exported using
> -EXPORT_SYMBOL() and related macros in any input FILE or -export-file FILE.
> -
> -=item -function NAME
> -
> -Only output documentation for the given function or DOC: section title.
> -All other functions and DOC: sections are ignored.
> -
> -May be specified multiple times.
> -
> -=item -nosymbol NAME
> -
> -Exclude the specified symbol from the output documentation.
> -
> -May be specified multiple times.
> -
> -=back
> -
> -=head2 Output selection modifiers:
> -
> -=over 8
> -
> -=item -no-doc-sections
> -
> -Do not output DOC: sections.
> -
> -=item -export-file FILE
> -
> -Specify an additional FILE in which to look for EXPORT_SYMBOL information.
> -
> -To be used with -export or -internal.
> -
> -May be specified multiple times.
> -
> -=back
> -
> -=head3 reStructuredText only
> -
> -=over 8
> -
> -=item -enable-lineno
> -
> -Enable output of .. LINENO lines.
> -
> -=back
> -
> -=head2 Other parameters:
> -
> -=over 8
> -
> -=item -h, -help
> -
> -Print this help.
> -
> -=item -v
> -
> -Verbose output, more warnings and other information.
> -
> -=item -Werror
> -
> -Treat warnings as errors.
> -
> -=back
> -
> -=cut
Thanks,
Mauro
