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|
#!/usr/bin/perl
use strict;
use File::Find;
use File::Basename;
my @warnings = ();
my $err = 0;
my $nwarn = 0;
sub quote_for_c($) {
my $s = join('', @_);
$s =~ s/([\"\'\\])/\\\1/g;
return $s;
}
sub find_warnings {
my $infile = $_;
return unless (basename($infile) =~ /^\w.*\.[ch]$/i);
open(my $in, '<', $infile)
or die "$0: cannot open input file $infile: $!\n";
my $in_comment = 0;
my $nline = 0;
my $this;
my @doc;
while (defined(my $l = <$in>)) {
$nline++;
chomp $l;
if (!$in_comment) {
$l =~ s/^.*?\/\*.*?\*\///g; # Remove single-line comments
if ($l =~ /^.*?(\/\*.*)$/) {
# Begin block comment
$l = $1;
$in_comment = 1;
}
}
if ($in_comment) {
if ($l =~ /\*\//) {
# End block comment
$in_comment = 0;
undef $this;
} elsif ($l =~ /^\s*\/?\*\!(\s*)(.*?)\s*$/) {
my $ws = $1;
my $str = $2;
next if ($str eq '');
if (!defined($this) || ($ws eq '' && $str ne '')) {
if ($str =~ /^([\w-]+)\s+\[(\w+)\]\s(.+)$/) {
my $name = $1;
my $def = $2;
my $help = $3;
my $cname = uc($name);
$cname =~ s/[^A-Z0-9_]+/_/g;
$this = {name => $name, cname => $cname,
def => $def, help => $help, doc => [],
file => $infile, line => $nline};
push(@warnings, $this);
$nwarn++;
} else {
print STDERR "$infile:$nline: malformed warning definition\n";
print STDERR " $l\n";
$err++;
}
} else {
push(@{$this->{doc}}, "$str\n");
}
} else {
undef $this;
}
}
}
close($in);
}
my($what, $outfile, @indirs) = @ARGV;
if (!defined($outfile)) {
die "$0: usage: [c|h|doc] outfile indir...\n";
}
find({ wanted => \&find_warnings, no_chdir => 1, follow => 1 }, @indirs);
exit(1) if ($err);
my %sort_special = ( 'other' => 1, 'all' => 2 );
sub sort_warnings {
my $an = $a->{name};
my $bn = $b->{name};
return ($sort_special{$an} <=> $sort_special{$bn}) || ($an cmp $bn);
}
@warnings = sort sort_warnings @warnings;
my @warn_noall = @warnings;
pop @warn_noall if ($warn_noall[$#warn_noall]->{name} eq 'all');
open(my $out, '>', $outfile)
or die "$0: cannot open output file $outfile: $!\n";
if ($what eq 'c') {
print $out "#include \"error.h\"\n\n";
printf $out "const char * const warning_name[%d] = {\n",
$#warnings + 2;
print $out "\tNULL";
foreach my $warn (@warnings) {
print $out ",\n\t\"", $warn->{name}, "\"";
}
print $out "\n};\n\n";
printf $out "const char * const warning_help[%d] = {\n",
$#warnings + 2;
print $out "\tNULL";
foreach my $warn (@warnings) {
my $help = quote_for_c($warn->{help});
print $out ",\n\t\"", $help, "\"";
}
print $out "\n};\n\n";
printf $out "const uint8_t warning_default[%d] = {\n",
$#warn_noall + 2;
print $out "\tWARN_INIT_ON"; # for entry 0
foreach my $warn (@warn_noall) {
print $out ",\n\tWARN_INIT_", uc($warn->{def});
}
print $out "\n};\n\n";
printf $out "uint8_t warning_state[%d];\t/* Current state */\n",
$#warn_noall + 2;
printf $out "uint8_t warning_state_init[%d];\t/* Command-line state, for reset */\n",
$#warn_noall + 2;
} elsif ($what eq 'h') {
my $filename = basename($outfile);
my $guard = $filename;
$guard =~ s/[^A-Za-z0-9_]+/_/g;
$guard = "NASM_\U$guard";
print $out "#ifndef $guard\n";
print $out "#define $guard\n";
print $out "\n";
print $out "#ifndef WARN_SHR\n";
print $out "# error \"$filename should only be included from within error.h\"\n";
print $out "#endif\n\n";
print $out "enum warn_index {\n";
printf $out "\tWARN_IDX_%-23s = %3d, /* not suppressible */\n", 'NONE', 0;
my $n = 1;
foreach my $warn (@warnings) {
printf $out "\tWARN_IDX_%-23s = %3d%s /* %s */\n",
$warn->{cname}, $n,
($n == $#warnings + 1) ? " " : ",",
$warn->{help};
$n++;
}
print $out "};\n\n";
print $out "enum warn_const {\n";
printf $out "\tWARN_%-27s = %3d << WARN_SHR", 'NONE', 0;
my $n = 1;
foreach my $warn (@warn_noall) {
printf $out ",\n\tWARN_%-27s = %3d << WARN_SHR", $warn->{cname}, $n++;
}
print $out "\n};\n\n";
printf $out "extern const char * const warning_name[%d];\n",
$#warnings + 2;
printf $out "extern const char * const warning_help[%d];\n",
$#warnings + 2;
printf $out "extern const uint8_t warning_default[%d];\n",
$#warn_noall + 2;
printf $out "extern uint8_t warning_state[%d];\n",
$#warn_noall + 2;
printf $out "extern uint8_t warning_state_init[%d];\n",
$#warn_noall + 2;
print $out "\n#endif /* $guard */\n";
} elsif ($what eq 'doc') {
my %whatdef = ( 'on' => 'Enabled',
'off' => 'Disabled',
'err' => 'Enabled and promoted to error' );
foreach my $warn (@warnings) {
my @doc = @{$warn->{doc}};
shift @doc while ($doc[0] =~ /^\s*$/);
pop @doc while ($doc[$#doc] =~ /^\s*$/);
print $out "\\b \\i\\c{", $warn->{name}, "} ", @doc;
my $docdef = $whatdef{$warn->{def}};
if (defined($docdef)) {
print $out $docdef, " by default.\n";
}
print $out "\n";
}
}
close($out);
|
