File Coverage

blib/lib/Perlito6/Perl5/Runtime.pm

Criterion	Covered	Total	%
statement	103	157	65.6
branch	28	64	43.7
condition	16	26	61.5
subroutine	30	48	62.5
pod	0	4	0.0
total	177	299	59.2

use v5;
binmode(STDOUT, ":utf8");
use Scalar::Util;
use Encode;

$_ = Encode::decode('utf-8', $_)
    for @ARGV;

{
    package Perlito6::Match;

    use strict;
    use warnings;
    no warnings 'recursion';

    use overload (
        '@{}'    => \&array,
        bool     => \&bool,
        '${}'    => \&scalar,
        '""'     => \&flat,
        '0+'     => \&flat,
        'eq'     => sub { "$_[0]" eq "$_[1]" },
    );

    sub new {
        my ($class, %data) = @_;
        return bless \%data, $class;
    }

    sub from { $_[0]{from} }
    sub to   { $_[0]{to} }
    sub bool { $_[0]{bool} }
    sub capture { $_[0]{capture} }

    sub array {
        my $v = $_[0];
             $v->{match}
        || ( $v->{match} = [] )
    }

    sub hash  {
        $_[0]
    }

    sub keys   {
        bless [ CORE::keys %{$_[0]} ], 'ARRAY';
    }
    sub values {
        bless [ CORE::values %{$_[0]} ], 'ARRAY';
    }
    sub pairs {
        bless [ map Pair->new( key => $_, value => $_[0]{$_} ),
            CORE::keys %{$_[0]}
        ], 'ARRAY';
    }

    sub flat {
        my $obj = $_[0];
        my $cap = $obj->{capture};
        #print ref $cap;
        return $cap
            if defined $cap;
        return '' unless $obj->{bool};
        return '' if $_[0]->from > length( $obj->{str} );
        return substr( $obj->{str}, $_[0]->from, $_[0]->to - $_[0]->from );
    }

    sub str {
        "" . $_[0]->flat;
    }

    sub scalar {
        return \( $_[0]->flat );
    }

}

package Perlito6::Grammar;
    sub space {
        # my $grammar = $_[0];
        my $str = $_[1]; my $pos = $_[2];
        my $MATCH = bless { str => $str, from => $pos, to => $pos }, 'Perlito6::Match';
        $MATCH->{bool} = (
            substr($str, $MATCH->{to}) =~ m/^([[:space:]])/
            ? ( 1 + ($MATCH->{to} = ( length( $1 ) + $MATCH->{to} )))
            : 0
        );
        $MATCH;
    }
    sub digit {
        # my $grammar = $_[0];
        my $str = $_[1]; my $pos = $_[2];
        my $MATCH = bless { str => $str, from => $pos, to => $pos }, 'Perlito6::Match';
        $MATCH->{bool} = (
            substr($str, $MATCH->{to}) =~ m/^([[:digit:]])/
            ? ( 1 + ($MATCH->{to} = ( length( $1 ) + $MATCH->{to} )))
            : 0
        );
        $MATCH;
    }

    sub word {
        # my $grammar = $_[0];
        my $str = $_[1]; my $pos = $_[2];
        my $MATCH = bless { str => $str, from => $pos, to => $pos }, 'Perlito6::Match';
        $MATCH->{bool} = (
            substr($str, $MATCH->{to}) =~ m/^([[:word:]])/
            ? ( 1 + ($MATCH->{to} = ( length( $1 ) + $MATCH->{to} )))
            : 0
        );
        $MATCH;
    }

package IO;

    sub slurp {
        my $source_filename = shift;
        open FILE, $source_filename
          or die "Cannot read $source_filename\n";
        local $/ = undef;
        $source = ;
        close FILE;
        return Encode::decode( 'utf-8', $source );
    }

package ARRAY;

    use overload (
        bool     => sub { scalar(@{$_[0]}) },
        '""'     => \&Str,
    );

    sub map  { bless [ CORE::map(  $_[1]($_), @{$_[0]} ) ], 'ARRAY' }
    sub grep { bless [ CORE::grep( $_[1]($_), @{$_[0]} ) ], 'ARRAY' }
    sub sort {
          $_[1]
        ? bless [ CORE::sort( $_[1]($_), @{$_[0]} ) ], 'ARRAY'
        : bless [ CORE::sort( @{$_[0]} ) ], 'ARRAY'
    }

    sub Str {
        join( " ", CORE::map { Main::Str($_) } @{$_[0]} )
    }

package HASH;

    use overload (
        bool     => sub { scalar(CORE::keys %{$_[0]}) },
        '""'     => \&Str,
    );

    sub Str {
        join( "\n", map { $_ . "\t" . Main::Str($_[0]{$_}) } CORE::keys %{$_[0]} )
    }

package Main;

    sub map  { bless [ CORE::map(  $_[0]($_), @{$_[1]} ) ], 'ARRAY' }
    sub grep { bless [ CORE::grep( $_[0]($_), @{$_[1]} ) ], 'ARRAY' }
    sub sort {
          $_[1]
        ? bless [ CORE::sort( $_[0]($_), @{$_[1]} ) ], 'ARRAY'
        : bless [ CORE::sort( @{$_[0]} ) ], 'ARRAY'
    }

    sub True { 1 }
    sub Str {
        my $can = UNIVERSAL::can($o => 'Str');
        return $can->($o) if $can;
        if ( ref($_[0]) ) {
            return ARRAY::Str($_[0]) if ref($_[0]) eq 'ARRAY';
            return HASH::Str($_[0])  if ref($_[0]) eq 'HASH';
        }
        return $_[0];
    }
    sub print {
        local $_;
        for (@_) {
            if ( ref($_) ) {
                CORE::print Main::Str($_);
                next;
            }
            CORE::print $_
        }
        return 1;
    }
    sub say   { Main::print( @_, "\n" ) }
    sub chars { length( $_[0] ) }
    sub isa {
        my $ref = ref($_[0]);
           (  $ref eq 'ARRAY'
           && $_[1] eq 'Array'
           )
        || (  $ref eq 'HASH'
           && $_[1] eq 'Hash'
           )
        || (  $ref eq ''
           && $_[1] eq 'Str'
           )
        || $ref eq $_[1]
        || (  ref( $_[1] )
           && $ref eq ref( $_[1] )
           )
    }

    sub keys   {
        bless [ CORE::keys %{$_[0]} ], 'ARRAY';
    }
    sub values {
        bless [ CORE::values %{$_[0]} ], 'ARRAY';
    }

    sub pairs {
        bless [
            map Pair->new( key => $_, value => $_[0]{$_} ),
                CORE::keys %{$_[0]}
        ], 'ARRAY';
    }

    sub id {
           Scalar::Util::refaddr($_[0])
        || "_id_" . $_[0]
    }

    sub perl {
        return 'Mu' unless defined $_[0];
        local $_;
        local %Main::_seen = %Main::_seen;
        my $o = shift;
        if ( ref($o) ) {
            my $key = "$o";
            return "'!!! Recursive structure !!!' at $key" if ($Main::_seen{$key} || 0) > 3;
            $Main::_seen{$key}++;
            return '[' . join( ", ", map { perl($_) } @$o ) . ']'
                if ref($o) eq 'ARRAY';
            return '{' . join( ", ", map { perl($_) . ' => ' . perl($o->{$_}) } sort {$a cmp $b} CORE::keys(%$o) ) . '}'
                if ref($o) eq 'HASH';
            return 'sub { ... }'
                if ref($o) eq 'CODE';
        }
        else {
            return $o if $o =~ /^[0-9]/ && (0+$o) eq $o;
            $o =~ s/\\/\\\\/g;
            $o =~ s/'/\\'/g;
            return "'" . $o . "'";
        }
        my $can = UNIVERSAL::can($o => 'perl');
        return $can->($o) if $can;
        my $ref = ref($o);
        return perl($$o) if $ref eq 'SCALAR';
        return $ref . ".new("
            . join( ", ", map { Main::perl($_) . ' => ' . Main::perl($o->{$_}) } sort {$a cmp $b} CORE::keys(%$o) )
            . ")";
    }

    sub yaml {
        my $can = UNIVERSAL::can($_[0] => 'yaml');
        if ($can) {
            $can->($_[0]);
        }
        else {
            require YAML::Syck;
            YAML::Syck::Dump($_[0]);
        }
    }

    sub join {
        return '' unless defined $_[0];
        my $can = UNIVERSAL::can($_[0] => 'join');
        if ($can) {
            $can->(@_);
        }
        else {
            join($_[1], @{$_[0]} );
        }
    }

    sub split {
        return '' unless defined $_[0];
        my $can = UNIVERSAL::can($_[0] => 'split');
        if ($can) {
            $can->(@_);
        }
        else {
            [ split($_[1], $_[0], -1) ];
        }
    }

    sub bool {
        $_[0] ? 1 : 0
    }

1;

__END__