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usr/share/perl/5.34.0/ExtUtils/Constant/XS.pm 0000644 00000014321 15030575037 0014420 0 ustar 00 package ExtUtils::Constant::XS; use strict; use vars qw($VERSION %XS_Constant %XS_TypeSet @ISA @EXPORT_OK $is_perl56); use Carp; use ExtUtils::Constant::Utils 'perl_stringify'; require ExtUtils::Constant::Base; @ISA = qw(ExtUtils::Constant::Base Exporter); @EXPORT_OK = qw(%XS_Constant %XS_TypeSet); $VERSION = '0.03'; $is_perl56 = ($] < 5.007 && $] > 5.005_50); =head1 NAME ExtUtils::Constant::XS - generate C code for XS modules' constants. =head1 SYNOPSIS require ExtUtils::Constant::XS; =head1 DESCRIPTION ExtUtils::Constant::XS overrides ExtUtils::Constant::Base to generate C code for XS modules' constants. =head1 BUGS Nothing is documented. Probably others. =head1 AUTHOR Nicholas Clark <nick@ccl4.org> based on the code in C<h2xs> by Larry Wall and others =cut # '' is used as a flag to indicate non-ascii macro names, and hence the need # to pass in the utf8 on/off flag. %XS_Constant = ( '' => '', IV => 'PUSHi(iv)', UV => 'PUSHu((UV)iv)', NV => 'PUSHn(nv)', PV => 'PUSHp(pv, strlen(pv))', PVN => 'PUSHp(pv, iv)', SV => 'PUSHs(sv)', YES => 'PUSHs(&PL_sv_yes)', NO => 'PUSHs(&PL_sv_no)', UNDEF => '', # implicit undef ); %XS_TypeSet = ( IV => '*iv_return = ', UV => '*iv_return = (IV)', NV => '*nv_return = ', PV => '*pv_return = ', PVN => ['*pv_return = ', '*iv_return = (IV)'], SV => '*sv_return = ', YES => undef, NO => undef, UNDEF => undef, ); sub header { my $start = 1; my @lines; push @lines, "#define PERL_constant_NOTFOUND\t$start\n"; $start++; push @lines, "#define PERL_constant_NOTDEF\t$start\n"; $start++; foreach (sort keys %XS_Constant) { next if $_ eq ''; push @lines, "#define PERL_constant_IS$_\t$start\n"; $start++; } push @lines, << 'EOT'; #ifndef NVTYPE typedef double NV; /* 5.6 and later define NVTYPE, and typedef NV to it. */ #endif #ifndef aTHX_ #define aTHX_ /* 5.6 or later define this for threading support. */ #endif #ifndef pTHX_ #define pTHX_ /* 5.6 or later define this for threading support. */ #endif EOT return join '', @lines; } sub valid_type { my ($self, $type) = @_; return exists $XS_TypeSet{$type}; } # This might actually be a return statement sub assignment_clause_for_type { my $self = shift; my $args = shift; my $type = $args->{type}; my $typeset = $XS_TypeSet{$type}; if (ref $typeset) { die "Type $type is aggregate, but only single value given" if @_ == 1; return map {"$typeset->[$_]$_[$_];"} 0 .. $#$typeset; } elsif (defined $typeset) { confess "Aggregate value given for type $type" if @_ > 1; return "$typeset$_[0];"; } return (); } sub return_statement_for_type { my ($self, $type) = @_; # In the future may pass in an options hash $type = $type->{type} if ref $type; "return PERL_constant_IS$type;"; } sub return_statement_for_notdef { # my ($self) = @_; "return PERL_constant_NOTDEF;"; } sub return_statement_for_notfound { # my ($self) = @_; "return PERL_constant_NOTFOUND;"; } sub default_type { 'IV'; } sub macro_from_name { my ($self, $item) = @_; my $macro = $item->{name}; $macro = $item->{value} unless defined $macro; $macro; } sub macro_from_item { my ($self, $item) = @_; my $macro = $item->{macro}; $macro = $self->macro_from_name($item) unless defined $macro; $macro; } # Keep to the traditional perl source macro sub memEQ { "memEQ"; } sub params { my ($self, $what) = @_; foreach (sort keys %$what) { warn "ExtUtils::Constant doesn't know how to handle values of type $_" unless defined $XS_Constant{$_}; } my $params = {}; $params->{''} = 1 if $what->{''}; $params->{IV} = 1 if $what->{IV} || $what->{UV} || $what->{PVN}; $params->{NV} = 1 if $what->{NV}; $params->{PV} = 1 if $what->{PV} || $what->{PVN}; $params->{SV} = 1 if $what->{SV}; return $params; } sub C_constant_prefix_param { "aTHX_ "; } sub C_constant_prefix_param_defintion { "pTHX_ "; } sub namelen_param_definition { 'STRLEN ' . $_[0] -> namelen_param; } sub C_constant_other_params_defintion { my ($self, $params) = @_; my $body = ''; $body .= ", int utf8" if $params->{''}; $body .= ", IV *iv_return" if $params->{IV}; $body .= ", NV *nv_return" if $params->{NV}; $body .= ", const char **pv_return" if $params->{PV}; $body .= ", SV **sv_return" if $params->{SV}; $body; } sub C_constant_other_params { my ($self, $params) = @_; my $body = ''; $body .= ", utf8" if $params->{''}; $body .= ", iv_return" if $params->{IV}; $body .= ", nv_return" if $params->{NV}; $body .= ", pv_return" if $params->{PV}; $body .= ", sv_return" if $params->{SV}; $body; } sub dogfood { my ($self, $args, @items) = @_; my ($package, $subname, $default_type, $what, $indent, $breakout) = @{$args}{qw(package subname default_type what indent breakout)}; my $result = <<"EOT"; /* When generated this function returned values for the list of names given in this section of perl code. Rather than manually editing these functions to add or remove constants, which would result in this comment and section of code becoming inaccurate, we recommend that you edit this section of code, and use it to regenerate a new set of constant functions which you then use to replace the originals. Regenerate these constant functions by feeding this entire source file to perl -x #!$^X -w use ExtUtils::Constant qw (constant_types C_constant XS_constant); EOT $result .= $self->dump_names ({default_type=>$default_type, what=>$what, indent=>0, declare_types=>1}, @items); $result .= <<'EOT'; print constant_types(), "\n"; # macro defs EOT $package = perl_stringify($package); $result .= "foreach (C_constant (\"$package\", '$subname', '$default_type', \$types, "; # The form of the indent parameter isn't defined. (Yet) if (defined $indent) { require Data::Dumper; $Data::Dumper::Terse=1; $Data::Dumper::Terse=1; # Not used once. :-) chomp ($indent = Data::Dumper::Dumper ($indent)); $result .= $indent; } else { $result .= 'undef'; } $result .= ", $breakout" . ', @names) ) { print $_, "\n"; # C constant subs } print "\n#### XS Section:\n"; print XS_constant ("' . $package . '", $types); __END__ */ '; $result; } 1; usr/lib/x86_64-linux-gnu/perl5/5.34/Algorithm/Diff/XS.pm 0000644 00000006752 15030714102 0016116 0 ustar 00 package Algorithm::Diff::XS; use 5.006; use strict; use warnings; use vars '$VERSION'; use Algorithm::Diff; BEGIN { $VERSION = '0.04'; require XSLoader; XSLoader::load( __PACKAGE__, $VERSION ); my $code = do { open my $fh, '<', $INC{'Algorithm/Diff.pm'} or die "Cannot read $INC{'Algorithm/Diff.pm'}: $!"; local $/; <$fh>; }; { no warnings; local $@; $code =~ s/Algorithm::Diff/Algorithm::Diff::XS/g; $code =~ s/sub LCSidx/sub LCSidx_old/g; $code = "#line 1 " . __FILE__ . "\n$code"; eval $code; die $@ if $@; } no warnings 'redefine'; sub LCSidx { my $lcs = Algorithm::Diff::XS->_CREATE_; my ( @l, @r ); for my $chunk ( $lcs->_LCS_(@_) ) { push @l, $chunk->[0]; push @r, $chunk->[1]; } return ( \@l, \@r ); } } sub _line_map_ { my $ctx = shift; my %lines; push @{ $lines{ $_[$_] } }, $_ for 0 .. $#_; # values MUST be SvIOK \%lines; } sub _LCS_ { my ( $ctx, $a, $b ) = @_; my ( $amin, $amax, $bmin, $bmax ) = ( 0, $#$a, 0, $#$b ); while ( $amin <= $amax and $bmin <= $bmax and $a->[$amin] eq $b->[$bmin] ) { $amin++; $bmin++; } while ( $amin <= $amax and $bmin <= $bmax and $a->[$amax] eq $b->[$bmax] ) { $amax--; $bmax--; } my $h = $ctx->_line_map_( @$b[ $bmin .. $bmax ] ); # line numbers are off by $bmin return $amin + _core_loop_( $ctx, $a, $amin, $amax, $h ) + ( $#$a - $amax ) unless wantarray; my @lcs = _core_loop_( $ctx, $a, $amin, $amax, $h ); if ( $bmin > 0 ) { $_->[1] += $bmin for @lcs; # correct line numbers } map( [ $_ => $_ ], 0 .. ( $amin - 1 ) ), @lcs, map( [ $_ => ++$bmax ], ( $amax + 1 ) .. $#$a ); } 1; __END__ =head1 NAME Algorithm::Diff::XS - Algorithm::Diff with XS core loop =head1 SYNOPSIS # Drop-in replacement to Algorithm::Diff, but "compact_diff" # and C<LCSidx> will run much faster for large data sets. use Algorithm::Diff::XS qw( compact_diff LCSidx ); =head1 DESCRIPTION This module is a simple re-packaging of Joe Schaefer's excellent but not very well-known L<Algorithm::LCS> with a drop-in interface that simply re-uses the installed version of the L<Algorithm::Diff> module. Note that only the C<LCSidx> function is optimized in XS at the moment, which means only C<compact_diff> will get significantly faster for large data sets, while C<diff> and C<sdiff> will run in identical speed as C<Algorithm::Diff>. =head1 BENCHMARK Rate Algorithm::Diff Algorithm::Diff::XS Algorithm::Diff 14.7/s -- -98% Algorithm::Diff::XS 806/s 5402% -- The benchmarking script is as below: my @data = ([qw/a b d/ x 50], [qw/b a d c/ x 50]); cmpthese( 500, { 'Algorithm::Diff' => sub { Algorithm::Diff::compact_diff(@data) }, 'Algorithm::Diff::XS' => sub { Algorithm::Diff::XS::compact_diff(@data) }, }); =head1 SEE ALSO L<Algorithm::Diff>, L<Algorithm::LCS>. =head1 AUTHORS Audrey Tang E<lt>cpan@audreyt.orgE<gt> =head1 COPYRIGHT Copyright 2008 by Audrey Tang E<lt>cpan@audreyt.orgE<gt>. Contains derived code copyrighted 2003 by Joe Schaefer, E<lt>joe+cpan@sunstarsys.comE<gt>. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. =cut
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