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use strict;
use warnings;
use Data::Dumper;
my %sets;
my %flag_consts;
my %flag_names;
my ( @flags, @static, @volatile );
my $file= "srl_decoder.h";
{
open my $fh, "<", $file
or die "Failed to open '$file' for read: $!";
while (<$fh>) {
if ( m/#define (SRL_F_(\w+))\s+(.*)/ || /(\w+(VOLATILE_FLAGS))\s+(.*)/ ) {
#print;
my $full_name= $1;
my $name= $2;
my $value= $3;
$name =~ s/_?DECODER_?//g;
$flag_names{$full_name}= $name;
if ( $value =~ s/UL\z// ) {
$flag_consts{$full_name}= 0 + eval $value;
}
else {
$value =~ s/(SRL_F_\w+)/\$flag_consts{$1}/g;
$sets{ "SRL_F_DECODER_" . $name }= 0 + eval $value;
}
}
}
foreach my $key ( sort { $flag_consts{$a} <=> $flag_consts{$b} } keys %flag_consts ) {
my $is_volatile= $flag_consts{$key} & $sets{SRL_F_DECODER_VOLATILE_FLAGS};
push @static, $is_volatile ? undef : $flag_names{$key};
push @volatile, $is_volatile ? $flag_names{$key} : undef;
push @flags, $flag_names{$key};
}
}
my %consts= ( %sets, %flag_consts );
$consts{_FLAG_NAME}= \@flags;
$consts{_FLAG_NAME_VOLATILE}= \@volatile;
$consts{_FLAG_NAME_STATIC}= \@static;
my $infile= "lib/Sereal/Decoder.pm";
my $outfile= "$infile.new";
open my $fh, "<", $infile
or die "Failed to read '$infile': $!";
open my $ofh, ">", $outfile
or die "Failed to write to '$outfile': $!";
while (<$fh>) {
if (/#begin generated/) {
print $ofh $_;
my $s= Data::Dumper->new( [ \%consts ] )->Sortkeys(1)->Terse(1)->Dump();
chop($s);
$s .= "; #end generated\n";
print $ofh $s;
}
unless ( /#begin generated/ ... /#end generated/ ) {
print $ofh $_;
}
}
close $ofh;
close $fh;
rename $infile, "$infile.bak" or die "Failed to rename '$infile' to '$infile.bak': $!";
rename $outfile, $infile or die "Failed to rename '$outfile' to '$infile': $!";
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