зеркало из https://github.com/mozilla/gecko-dev.git
408 строки
10 KiB
Perl
Executable File
408 строки
10 KiB
Perl
Executable File
#!/usr/bonsaitools/bin/perl
|
|
# $Id: genxref,v 1.3 1999/01/21 00:42:23 endico%mozilla.org Exp $
|
|
|
|
# genxref.pl -- Finds identifiers in a set of C files using an
|
|
# extremely fuzzy algorithm. It sort of works.
|
|
#
|
|
# Arne Georg Gleditsch <argggh@ifi.uio.no>
|
|
# Per Kristian Gjermshus <pergj@ifi.uio.no>
|
|
#
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
# TODO: ns/cmd/xfe/src/MozillaApp.h, XFE_MozillaApp
|
|
|
|
######################################################################
|
|
|
|
use lib 'lib/';
|
|
use integer;
|
|
use DB_File;
|
|
|
|
|
|
%itype = (('macro', 'M'),
|
|
('typedef', 'T'),
|
|
('struct', 'S'),
|
|
('enum', 'E'),
|
|
('union', 'U'),
|
|
('function', 'F'),
|
|
('funcprot', 'f'),
|
|
('class', 'C'), # (C++)
|
|
('classforw', 'c'), # (C++)
|
|
('var', 'V'),
|
|
('interface', 'I'));
|
|
# ('reference', 'R')
|
|
|
|
@reserved = ('auto', 'break', 'case', 'char', 'const', 'continue',
|
|
'default', 'do', 'double', 'else', 'enum', 'extern',
|
|
'float', 'for', 'goto', 'if', 'int', 'long', 'register',
|
|
'return', 'short', 'signed', 'sizeof', 'static',
|
|
'struct', 'switch', 'typedef', 'union', 'unsigned',
|
|
'void', 'volatile', 'while', 'fortran', 'asm',
|
|
'inline', 'operator',
|
|
'class', # (C++)
|
|
# Her bør vi ha flere av disse:
|
|
'__asm__','__inline__');
|
|
|
|
|
|
$ident = '\~?_*[a-zA-Z][a-zA-Z0-9_]*';
|
|
|
|
|
|
$realpath = $ARGV[0];
|
|
$realpath ||= '.';
|
|
$realpath .= '/';
|
|
|
|
|
|
sub wash {
|
|
my $towash = $_[0];
|
|
$towash =~ s/[^\n]+//gs;
|
|
return($towash);
|
|
}
|
|
|
|
sub stripodd {
|
|
my $tostrip = $_[0];
|
|
while ($tostrip =~ s/\{([^\{\}]*)\}/
|
|
"\05".&wash($1)/ges) {}
|
|
$tostrip =~ s/\05/\{\}/gs;
|
|
$tostrip =~ s/[\{\}]//gs;
|
|
return($tostrip);
|
|
}
|
|
|
|
sub classes {
|
|
my @c = (shift =~ /($ident)\s*(?:$|,)/gm);
|
|
if (@c) {
|
|
return(join(":", @c)."::");
|
|
} else {
|
|
return('');
|
|
}
|
|
}
|
|
|
|
sub c_clean {
|
|
my $contents = $_[0];
|
|
# Find macro (un)definitions.
|
|
$l = 0;
|
|
foreach ($contents =~ /^(.*)/gm) {
|
|
$l++;
|
|
if (/^[ \t]*\#\s*(define|undef)\s+($ident)/o) {
|
|
$xref{$2} .= "$itype{'macro'}$fnum:$l\t";
|
|
$defs++;
|
|
}
|
|
}
|
|
|
|
# We want to do some funky heuristics with preprocessor blocks
|
|
# later, so mark them. (FIXME: #elif)
|
|
$contents =~ s/^[ \t]*\#\s*if.*/\01/gm;
|
|
$contents =~ s/^[ \t]*\#\s*else.*/\02/gm;
|
|
$contents =~ s/^[ \t]*\#\s*endif.*/\03/gm;
|
|
|
|
# Strip all preprocessor directives.
|
|
$contents =~ s/^[ \t]*\#(.*)//gm;
|
|
|
|
# Now, remove all odd block markers ({,}) we find inside
|
|
# #else..#endif blocks. (And pray they matched one in the
|
|
# preceding #if..#else block.)
|
|
while ($contents =~ s/\02([^\01\02\03]*\03)/&stripodd($1)/ges ||
|
|
$contents =~ s/\01([^\01\02\03]*)\03/$1/gs) {}
|
|
|
|
while ($contents =~ /([\01\02\03\04\05])/gs) {
|
|
print(STDERR "\t ** stray ".($1 eq "\01"
|
|
? "#if"
|
|
: ($1 eq "\02"
|
|
? "#else"
|
|
: ($1 eq "\03"
|
|
? "#endif"
|
|
: "control sequence"
|
|
)
|
|
)
|
|
)." found.\n");
|
|
}
|
|
$contents =~ s/[\01\02\03\04\05]//gs;
|
|
|
|
# Remove all but outermost blocks. (No local variables.)
|
|
while ($contents =~ s/\{([^\{\}]*)\}/
|
|
"\05".&wash($1)/ges) {}
|
|
$contents =~ s/\05/\{\}/gs;
|
|
|
|
# This operator-stuff messes things up. (C++)
|
|
$contents =~ s/operator[\<\>\=\!\+\-\*\%\/]{1,2}/operator/g;
|
|
|
|
# Ranges are uninteresting (and confusing).
|
|
$contents =~ s/\[.*?\]//gs;
|
|
|
|
# And so are assignments.
|
|
$contents =~ s/\=(.*?);/";".&wash($1)/ges;
|
|
|
|
return $contents;
|
|
}
|
|
|
|
sub java_clean {
|
|
my $contents = $_[0];
|
|
while ($contents =~ s/(\{[^\{]*)\{([^\{\}]*)\}/
|
|
$1."\05".&wash($2)/ges) {}
|
|
$contents =~ s/\05/\{\}/gs;
|
|
|
|
# Remove imports
|
|
$contents =~ s/^\s*import.*;//gm;
|
|
|
|
# Remove packages
|
|
$contents =~ s/^\s*package.*;//gm;
|
|
|
|
return $contents;
|
|
}
|
|
|
|
sub c_classes {
|
|
my $contents = $_[0];
|
|
|
|
# Find struct, enum and union definitions.
|
|
$contents =~ s/((struct|enum|union)\s+($ident|)\s*({}|(;)))/
|
|
"$2 ".($3 ? "\01".$itype{$2}.$3."\02 " : "").$5.&wash($1)/goes;
|
|
|
|
# Find class definitions. (C++)
|
|
$contents =~ s/((class)\s+($ident)\s*(:[^;\{]*|)({}|(;)))/
|
|
"$2 "."\01".$itype{$2.($6 ? 'forw' : '')}.
|
|
&classes($4).$3."\02 ".$6.&wash($1)/goes;
|
|
|
|
return $contents;
|
|
}
|
|
|
|
sub java_classes {
|
|
my $contents = $_[0];
|
|
|
|
# Find Java classes
|
|
$contents =~ s/((class)\s+($ident)\s*(extends\s+([\.\w]+)\s*|)(implements\s+([\.\w]+)|))/
|
|
"$2 "."\01".$itype{$2}.&classes($5.", ".$7).$3."\02 ".
|
|
&wash($1)/goes;
|
|
|
|
# Find Java interfaces
|
|
$contents =~ s/((interface)\s+($ident)\s*(extends\s+([\.\w]+)|))/
|
|
"$2 "."\01".$itype{$2}.&classes($5).$3."\02 ".&wash($1)/goes;
|
|
return $contents;
|
|
}
|
|
|
|
sub findident {
|
|
print(STDERR "Starting pass 1: Collect identifier definitions.\n");
|
|
|
|
$start = time;
|
|
$fnum = 0; $defs = 0;
|
|
|
|
foreach $f (@f) {
|
|
$f =~ s/^$realpath//o;
|
|
$java = $ft[$fnum];
|
|
$fileidx{++$fnum} = $f;
|
|
|
|
open(SRCFILE, $realpath.$f);
|
|
$_ = $/; undef($/); $contents = <SRCFILE>; $/ = $_;
|
|
close(SRCFILE);
|
|
|
|
print(STDERR
|
|
"(Pass 1) $f (",length($contents),
|
|
"), file $fnum of ",$#f+1,"...\n");
|
|
|
|
# Remove comments.
|
|
$contents =~ s/\/\*(.*?)\*\//&wash($1)/ges;
|
|
$contents =~ s/\/\/[^\n]*//g; # C++
|
|
|
|
# Unwrap continunation lines.
|
|
$contents =~ s/\\\s*\n/$1\05/gs;
|
|
while ($contents =~ s/\05([^\n\05]+)\05/$1\05\05/gs) {}
|
|
$contents =~ s/(\05+)([^\n]*)/"$2"."\n" x length($1)/gse;
|
|
|
|
if ($java) {
|
|
$contents = java_clean($contents);
|
|
} else {
|
|
$contents = c_clean($contents);
|
|
}
|
|
|
|
# Remove nested parentheses.
|
|
while ($contents =~ s/\(([^\)]*)\(/\($1\05/g ||
|
|
$contents =~ s/\05([^\(\)]*)\)/ $1 /g) {}
|
|
|
|
# Some heuristics here: Try to recognize "code" and delete
|
|
# everything up to the next block delimiter.
|
|
# $contents =~ s/([\;\}\{])(\s*$ident\s*\([^\)]*\)[^\{\}]*)/
|
|
# "$1".&wash($2)/goes;
|
|
# $contents =~ s/([\;\{])(\s*\**$ident\s*\=[^\{\}]*)/
|
|
# "$1".&wash($2)/goes;
|
|
|
|
# Parentheses containing commas are probably not interesting.
|
|
$contents =~ s/\(([^\)]*\,[^\)]*)\)/
|
|
"()".&wash($1)/ges;
|
|
|
|
# From here on, \01 and \02 are used to encapsulate found
|
|
# identifiers,
|
|
|
|
if ($java) {
|
|
$contents = java_classes($contents);
|
|
} else {
|
|
$contents = c_classes($contents);
|
|
}
|
|
|
|
@contents = split(/[;\}]/, $contents);
|
|
$contents = '';
|
|
|
|
foreach (@contents) {
|
|
if (!$java) {
|
|
s/^(\s*)(struct|enum|union|inline)/$1/;
|
|
|
|
if (/$ident[^a-zA-Z0-9_]+$ident/) { # It takes two, baby.
|
|
|
|
$t = /^\s*typedef/s; # Is this a type definition?
|
|
|
|
s/($ident(?:\s*::\s*$ident|)) # ($1) Match the identifier
|
|
([\s\)]* # ($2) Tokens allowed after identifier
|
|
(\([^\)]*\) # ($3) Function parameters?
|
|
(?:\s*:[^\{]*|) # inheritage specification (C++)
|
|
|) # No function parameters
|
|
\s*($|,|\{))/ # ($4) Allowed termination chars.
|
|
"\01". # identifier marker
|
|
($t # if type definition...
|
|
? $itype{'typedef'} # ..mark as such
|
|
: ($3 # $3 is empty unless function definition.
|
|
? ($4 eq '{' # Terminating token indicates
|
|
? $itype{'function'} # function or
|
|
: $itype{'funcprot'}) # function prototype.
|
|
: $itype{'var'}) # Variable.
|
|
)."$1\02 ".&wash($2)/goesx;
|
|
}
|
|
} else {
|
|
s/($ident)\s*\([^\)]*\)[^\{]*($|\{)/
|
|
"\01".($2 eq '{' ? $itype{'function'} : $itype{'funcprot'})."$1\02 ".
|
|
&wash($2)/goesx;
|
|
s/($ident)\s*(=.*)$/
|
|
"\01".$itype{'var'}."$1\02 ".&wash($2)/goesx;
|
|
}
|
|
|
|
$contents .= $_;
|
|
}
|
|
|
|
$l = 0;
|
|
foreach ($contents =~ /^(.*)/gm) {
|
|
$l++;
|
|
while (/\01(.)(?:(.+?)\s*::\s*|)($ident)\02/go) {
|
|
$xref{$3} .= "$1$fnum:$l".($2 ? ":$2" : "")."\t";
|
|
$defs++;
|
|
}
|
|
}
|
|
}
|
|
|
|
# Så juksar me litt.
|
|
foreach (@reserved) {
|
|
delete($xref{$_});
|
|
}
|
|
|
|
print(STDERR
|
|
"Completed pass 1 (",(time-$start),"s):",
|
|
" $defs definitions found.\n\n");
|
|
}
|
|
|
|
|
|
sub findusage {
|
|
print(STDERR "Starting pass 2: Generate reference statistics.\n");
|
|
|
|
$start = time;
|
|
$fnum = 0; $refs = 0;
|
|
|
|
foreach $f (@f) {
|
|
$f =~ s/^$realpath//o;
|
|
$fnum++;
|
|
$lcount = 0;
|
|
%tref = ();
|
|
|
|
open(SRCFILE, $realpath.$f);
|
|
$_ = $/; undef($/); $contents = <SRCFILE>; $/ = $_;
|
|
close(SRCFILE);
|
|
|
|
print(STDERR
|
|
"(Pass 2) $f (",length($contents),
|
|
"), file $fnum of ",$#f+1,"...\n");
|
|
|
|
# Remove comments
|
|
$contents =~ s/\/\*(.*?)\*\//&wash($1)/ges;
|
|
$contents =~ s/\/\/[^\n]*//g;
|
|
|
|
# Remove include statements
|
|
$contents =~ s/^[ \t]*\#include[ \t]+[^\n]*//gm;
|
|
|
|
# FIXME: "var"
|
|
|
|
@lines = split(/\n/, $contents);
|
|
|
|
foreach $line (@lines) {
|
|
$lcount++;
|
|
foreach ($line =~ /(?:^|[^a-zA-Z_\#])($ident)\b/og) {
|
|
$tref{$_} .= "$lcount," if $xref{$_};
|
|
}
|
|
}
|
|
|
|
while (($a, $b) = each(%tref)) {
|
|
chop($b);
|
|
$xref{$a} .= "R$fnum:$b\t";
|
|
$refs++;
|
|
}
|
|
}
|
|
print(STDERR
|
|
"Completed pass 2 (",(time-$start),"s):",
|
|
"$refs references to known identifiers found.\n\n");
|
|
}
|
|
|
|
|
|
sub dumpdb {
|
|
print(STDERR "Starting pass 3: Dump database to disk.\n");
|
|
|
|
$start = time;
|
|
tie (%xrefdb, "DB_File" , "xref", O_RDWR|O_CREAT, 0664, $DB_HASH)
|
|
|| die("Could not open \"xref\" for writing");
|
|
|
|
$i = 0;
|
|
while (($k, $v) = each(%xref)) {
|
|
$i++;
|
|
delete($xref{$k});
|
|
$xrefdb{$k} = $v;
|
|
unless ($i % 100) {
|
|
print(STDERR "(Pass 3) identifier $i of maximum $defs...\n");
|
|
}
|
|
}
|
|
|
|
untie(%xrefdb);
|
|
print(STDERR
|
|
"Completed pass 3 (",(time-$start),"s):",
|
|
"Information on $i identifiers dumped to disk.\n\n");
|
|
}
|
|
|
|
|
|
tie (%fileidx, "DB_File", "fileidx", O_RDWR|O_CREAT, 0660, $DB_HASH)
|
|
|| die("Could not open \"fileidx\" for writing");
|
|
|
|
open(FILES, "find $realpath -print |");
|
|
while (<FILES>) {
|
|
chop;
|
|
if (/\.([ch]|cpp?|cc)$/i) {
|
|
push(@f, $_);
|
|
push(@t, 0);
|
|
}
|
|
if (/\.(java)$/i) {
|
|
push(@f, $_);
|
|
push(@ft, 1);
|
|
}
|
|
# push(@f, $_) if /\.([ch]|cpp?|cc|java)$/i; # Duplicated in lib/LXR/Common.pm
|
|
}
|
|
close(FILES);
|
|
|
|
&findident;
|
|
&findusage;
|
|
&dumpdb;
|
|
|
|
dbmclose(%fileidx);
|
|
|