| #!/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@redhat.com> ## |
| ## Copyright (C) 2001 Simon Huggins ## |
| ## Copyright (C) 2005-2012 Randy Dunlap ## |
| ## Copyright (C) 2012 Dan Luedtke ## |
| ## ## |
| ## #define enhancements by Armin Kuster <akuster@mvista.com> ## |
| ## 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 [-sphinx-version VERSION] [-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 $kernelversion; |
| my ($sphinx_major, $sphinx_minor, $sphinx_patch); |
| |
| my $dohighlight = ""; |
| |
| my $verbose = 0; |
| my $Werror = 0; |
| my $Wreturn = 0; |
| my $Wshort_desc = 0; |
| my $Wcontents_before_sections = 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, $brcount, %source_map); |
| |
| if (defined($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 $in_doc_sect; |
| 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*\(\s*(\w+)\s*,\s*\w+\)\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 "Wcontents-before-sections") { |
| $Wcontents_before_sections = 1; |
| } elsif ($cmd eq "Wall") { |
| $Wreturn = 1; |
| $Wshort_desc = 1; |
| $Wcontents_before_sections = 1; |
| } elsif (($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') { |
| $show_not_found = 1; # A no-op but don't fail |
| } elsif ($cmd eq "sphinx-version") { |
| my $ver_string = shift @ARGV; |
| if ($ver_string =~ m/^(\d+)(\.\d+)?(\.\d+)?/) { |
| $sphinx_major = $1; |
| if (defined($2)) { |
| $sphinx_minor = substr($2,1); |
| } else { |
| $sphinx_minor = 0; |
| } |
| if (defined($3)) { |
| $sphinx_patch = substr($3,1) |
| } else { |
| $sphinx_patch = 0; |
| } |
| } else { |
| die "Sphinx version should either major.minor or major.minor.patch format\n"; |
| } |
| } else { |
| # Unknown argument |
| pod2usage( |
| -message => "Argument unknown!\n", |
| -exitval => 1, |
| -verbose => 99, |
| -sections => 'SYNOPSIS', |
| -output => \*STDERR, |
| ); |
| } |
| if ($#ARGV < 0){ |
| pod2usage( |
| -message => "FILE argument missing\n", |
| -exitval => 1, |
| -verbose => 99, |
| -sections => 'SYNOPSIS', |
| -output => \*STDERR, |
| ); |
| } |
| } |
| |
| # continue execution near EOF; |
| |
| # The C domain dialect changed on Sphinx 3. So, we need to check the |
| # version in order to produce the right tags. |
| sub findprog($) |
| { |
| foreach(split(/:/, $ENV{PATH})) { |
| return "$_/$_[0]" if(-x "$_/$_[0]"); |
| } |
| } |
| |
| sub get_sphinx_version() |
| { |
| my $ver; |
| |
| my $cmd = "sphinx-build"; |
| if (!findprog($cmd)) { |
| my $cmd = "sphinx-build3"; |
| if (!findprog($cmd)) { |
| $sphinx_major = 1; |
| $sphinx_minor = 2; |
| $sphinx_patch = 0; |
| printf STDERR "Warning: Sphinx version not found. Using default (Sphinx version %d.%d.%d)\n", |
| $sphinx_major, $sphinx_minor, $sphinx_patch; |
| return; |
| } |
| } |
| |
| open IN, "$cmd --version 2>&1 |"; |
| while (<IN>) { |
| if (m/^\s*sphinx-build\s+([\d]+)\.([\d\.]+)(\+\/[\da-f]+)?$/) { |
| $sphinx_major = $1; |
| $sphinx_minor = $2; |
| $sphinx_patch = $3; |
| last; |
| } |
| # Sphinx 1.2.x uses a different format |
| if (m/^\s*Sphinx.*\s+([\d]+)\.([\d\.]+)$/) { |
| $sphinx_major = $1; |
| $sphinx_minor = $2; |
| $sphinx_patch = $3; |
| last; |
| } |
| } |
| close IN; |
| } |
| |
| # 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 $count; |
| |
| print ".TH \"$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 = ""; |
| } |
| |
| 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); |
| } |
| foreach $line (split "\n", $output) { |
| print $lineprefix . $line . "\n"; |
| } |
| } |
| |
| sub output_function_rst(%) { |
| my %args = %{$_[0]}; |
| my ($parameter, $section); |
| my $oldprefix = $lineprefix; |
| |
| my $signature = ""; |
| if ($args{'functiontype'} ne "") { |
| $signature = $args{'functiontype'} . " " . $args{'function'} . " ("; |
| } else { |
| $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; |
| } |
| } |
| |
| $signature .= ")"; |
| |
| if ($sphinx_major < 3) { |
| if ($args{'typedef'}) { |
| print ".. c:type:: ". $args{'function'} . "\n\n"; |
| print_lineno($declaration_start_line); |
| print " **Typedef**: "; |
| $lineprefix = ""; |
| output_highlight_rst($args{'purpose'}); |
| print "\n\n**Syntax**\n\n"; |
| print " ``$signature``\n\n"; |
| } else { |
| print ".. c:function:: $signature\n\n"; |
| } |
| } else { |
| if ($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. |
| # |
| print ".. container:: kernelindent\n\n"; |
| $lineprefix = " "; |
| 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 $outer; |
| |
| if ($sphinx_major < 3) { |
| my $name = "enum " . $args{'enum'}; |
| print "\n\n.. c:type:: " . $name . "\n\n"; |
| } else { |
| 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 $name; |
| |
| if ($sphinx_major < 3) { |
| $name = "typedef " . $args{'typedef'}; |
| } else { |
| $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 = $lineprefix; |
| |
| if ($sphinx_major < 3) { |
| my $name = $args{'type'} . " " . $args{'struct'}; |
| print "\n\n.. c:type:: " . $name . "\n\n"; |
| } else { |
| 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*__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|tagged)\s*\(([^,]*,){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){1,8})\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 $noret = 0; |
| |
| print_lineno($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/__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*\(\s*\S+\s*(?:,\s*\d+\s*)*\) +//; |
| 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; |
| $noret = 1; |
| } elsif ($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 && !$noret) { |
| check_return_section($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' => $declaration_purpose |
| }); |
| } else { |
| output_declaration($declaration_name, |
| 'function', |
| {'function' => $declaration_name, |
| 'module' => $modulename, |
| 'functiontype' => $return_type, |
| 'parameterlist' => \@parameterlist, |
| 'parameterdescs' => \%parameterdescs, |
| 'parametertypes' => \%parametertypes, |
| 'sectionlist' => \@sectionlist, |
| 'sections' => \%sections, |
| 'purpose' => $declaration_purpose |
| }); |
| } |
| } |
| |
| 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; |
| } |
| |
| if (defined($source_map{$file})) { |
| $file = $source_map{$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 |
| $in_doc_sect = 0; |
| $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 |
| $in_doc_sect = 1; |
| $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")) { |
| if (!$in_doc_sect && $Wcontents_before_sections) { |
| emit_warning("${file}:$.", "contents before sections\n"); |
| } |
| dump_section($file, $section, $contents); |
| $section = $section_default; |
| } |
| |
| $in_doc_sect = 1; |
| $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 $initial_section_counter = $section_counter; |
| my ($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, $_); |
| } |
| } |
| |
| # Make sure we got something interesting. |
| if ($initial_section_counter == $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; |
| } |
| |
| |
| if ($output_mode eq "rst") { |
| get_sphinx_version() if (!$sphinx_major); |
| } |
| |
| $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:$result:gs;\n"; |
| } |
| |
| # Read the file that maps relative names to absolute names for |
| # separate source and object directories and for shadow trees. |
| if (open(SOURCE_MAP, "<.tmp_filelist.txt")) { |
| my ($relname, $absname); |
| while(<SOURCE_MAP>) { |
| chop(); |
| ($relname, $absname) = (split())[0..1]; |
| $relname =~ s:^/+::; |
| $source_map{$relname} = $absname; |
| } |
| close(SOURCE_MAP); |
| } |
| |
| if ($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 |
| |
| =over 8 |
| |
| =item -sphinx-version VERSION |
| |
| Use the ReST C domain dialect compatible with a specific Sphinx Version. |
| |
| If not specified, kernel-doc will auto-detect using the sphinx-build version |
| found on PATH. |
| |
| =back |
| |
| =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 |
