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}

#line 779

use vars qw(@Data_Stack %Refs_Seen);
my $DNE = bless [], 'Does::Not::Exist';

sub _dne {
    ref $_[0] eq ref $DNE;
}


sub is_deeply {
    my $tb = Test::More->builder;

    unless( @_ == 2 or @_ == 3 ) {
        my $msg = <<WARNING;
is_deeply() takes two or three args, you gave %d.
This usually means you passed an array or hash instead 
of a reference to it
WARNING
        chop $msg;   # clip off newline so carp() will put in line/file

        _carp sprintf $msg, scalar @_;

	return $tb->ok(0);
    }

    my($got, $expected, $name) = @_;

    $tb->_unoverload_str(\$expected, \$got);

    my $ok;
    if( !ref $got and !ref $expected ) {  		# neither is a reference
        $ok = $tb->is_eq($got, $expected, $name);
    }
    elsif( !ref $got xor !ref $expected ) {  	# one's a reference, one isn't
        $ok = $tb->ok(0, $name);
	$tb->diag( _format_stack({ vals => [ $got, $expected ] }) );
    }
    else {			       		# both references
        local @Data_Stack = ();
        if( _deep_check($got, $expected) ) {
            $ok = $tb->ok(1, $name);
        }
        else {
            $ok = $tb->ok(0, $name);
            $tb->diag(_format_stack(@Data_Stack));
        }
    }

    return $ok;
}

sub _format_stack {
    my(@Stack) = @_;

    my $var = '$FOO';
    my $did_arrow = 0;
    foreach my $entry (@Stack) {
        my $type = $entry->{type} || '';
        my $idx  = $entry->{'idx'};
        if( $type eq 'HASH' ) {
            $var .= "->" unless $did_arrow++;
            $var .= "{$idx}";
        }
        elsif( $type eq 'ARRAY' ) {
            $var .= "->" unless $did_arrow++;
            $var .= "[$idx]";
        }
        elsif( $type eq 'REF' ) {
            $var = "\${$var}";
        }
    }

    my @vals = @{$Stack[-1]{vals}}[0,1];
    my @vars = ();
    ($vars[0] = $var) =~ s/\$FOO/     \$got/;
    ($vars[1] = $var) =~ s/\$FOO/\$expected/;

    my $out = "Structures begin differing at:\n";
    foreach my $idx (0..$#vals) {
        my $val = $vals[$idx];
        $vals[$idx] = !defined $val ? 'undef'          :
                      _dne($val)    ? "Does not exist" :
                      ref $val      ? "$val"           :
                                      "'$val'";
    }

    $out .= "$vars[0] = $vals[0]\n";
    $out .= "$vars[1] = $vals[1]\n";

    $out =~ s/^/    /msg;
    return $out;
}


sub _type {
    my $thing = shift;

    return '' if !ref $thing;

    for my $type (qw(ARRAY HASH REF SCALAR GLOB CODE Regexp)) {
        return $type if UNIVERSAL::isa($thing, $type);
    }

    return '';
}

#line 925

sub diag {
    my $tb = Test::More->builder;

    $tb->diag(@_);
}


#line 994

#'#
sub skip {
    my($why, $how_many) = @_;
    my $tb = Test::More->builder;

    unless( defined $how_many ) {
        # $how_many can only be avoided when no_plan is in use.
        _carp "skip() needs to know \$how_many tests are in the block"
          unless $tb->has_plan eq 'no_plan';
        $how_many = 1;
    }

    if( defined $how_many and $how_many =~ /\D/ ) {
        _carp "skip() was passed a non-numeric number of tests.  Did you get the arguments backwards?";
        $how_many = 1;
    }

    for( 1..$how_many ) {
        $tb->skip($why);
    }

    local $^W = 0;
    last SKIP;
}


#line 1081

sub todo_skip {
    my($why, $how_many) = @_;
    my $tb = Test::More->builder;

    unless( defined $how_many ) {
        # $how_many can only be avoided when no_plan is in use.
        _carp "todo_skip() needs to know \$how_many tests are in the block"
          unless $tb->has_plan eq 'no_plan';
        $how_many = 1;
    }

    for( 1..$how_many ) {
        $tb->todo_skip($why);
    }

    local $^W = 0;
    last TODO;
}

#line 1134

sub BAIL_OUT {
    my $reason = shift;
    my $tb = Test::More->builder;

    $tb->BAIL_OUT($reason);
}

#line 1173

#'#
sub eq_array {
    local @Data_Stack;
    _deep_check(@_);
}

sub _eq_array  {
    my($a1, $a2) = @_;

    if( grep !_type($_) eq 'ARRAY', $a1, $a2 ) {
        warn "eq_array passed a non-array ref";
        return 0;
    }

    return 1 if $a1 eq $a2;

    my $ok = 1;
    my $max = $#$a1 > $#$a2 ? $#$a1 : $#$a2;
    for (0..$max) {
        my $e1 = $_ > $#$a1 ? $DNE : $a1->[$_];
        my $e2 = $_ > $#$a2 ? $DNE : $a2->[$_];

        push @Data_Stack, { type => 'ARRAY', idx => $_, vals => [$e1, $e2] };
        $ok = _deep_check($e1,$e2);
        pop @Data_Stack if $ok;

        last unless $ok;
    }

    return $ok;
}

sub _deep_check {
    my($e1, $e2) = @_;
    my $tb = Test::More->builder;

    my $ok = 0;

    # Effectively turn %Refs_Seen into a stack.  This avoids picking up
    # the same referenced used twice (such as [\$a, \$a]) to be considered
    # circular.
    local %Refs_Seen = %Refs_Seen;

    {
        # Quiet uninitialized value warnings when comparing undefs.
        local $^W = 0; 

        $tb->_unoverload_str(\$e1, \$e2);

        # Either they're both references or both not.
        my $same_ref = !(!ref $e1 xor !ref $e2);
	my $not_ref  = (!ref $e1 and !ref $e2);

        if( defined $e1 xor defined $e2 ) {
            $ok = 0;
        }
        elsif ( _dne($e1) xor _dne($e2) ) {
            $ok = 0;
        }
        elsif ( $same_ref and ($e1 eq $e2) ) {
            $ok = 1;
        }
	elsif ( $not_ref ) {
	    push @Data_Stack, { type => '', vals => [$e1, $e2] };
	    $ok = 0;
	}
        else {
            if( $Refs_Seen{$e1} ) {
                return $Refs_Seen{$e1} eq $e2;
            }
            else {
                $Refs_Seen{$e1} = "$e2";
            }

            my $type = _type($e1);
            $type = 'DIFFERENT' unless _type($e2) eq $type;

            if( $type eq 'DIFFERENT' ) {
                push @Data_Stack, { type => $type, vals => [$e1, $e2] };
                $ok = 0;
            }
            elsif( $type eq 'ARRAY' ) {
                $ok = _eq_array($e1, $e2);
            }
            elsif( $type eq 'HASH' ) {
                $ok = _eq_hash($e1, $e2);
            }
            elsif( $type eq 'REF' ) {
                push @Data_Stack, { type => $type, vals => [$e1, $e2] };
                $ok = _deep_check($$e1, $$e2);
                pop @Data_Stack if $ok;
            }
            elsif( $type eq 'SCALAR' ) {
                push @Data_Stack, { type => 'REF', vals => [$e1, $e2] };
                $ok = _deep_check($$e1, $$e2);
                pop @Data_Stack if $ok;
            }
            elsif( $type ) {
                push @Data_Stack, { type => $type, vals => [$e1, $e2] };
                $ok = 0;
            }
	    else {
		_whoa(1, "No type in _deep_check");
	    }
        }
    }

    return $ok;
}


sub _whoa {
    my($check, $desc) = @_;
    if( $check ) {
        die <<WHOA;
WHOA!  $desc
This should never happen!  Please contact the author immediately!
WHOA
    }
}


#line 1304

sub eq_hash {
    local @Data_Stack;
    return _deep_check(@_);
}

sub _eq_hash {
    my($a1, $a2) = @_;

    if( grep !_type($_) eq 'HASH', $a1, $a2 ) {
        warn "eq_hash passed a non-hash ref";
        return 0;
    }

    return 1 if $a1 eq $a2;

    my $ok = 1;
    my $bigger = keys %$a1 > keys %$a2 ? $a1 : $a2;
    foreach my $k (keys %$bigger) {
        my $e1 = exists $a1->{$k} ? $a1->{$k} : $DNE;
        my $e2 = exists $a2->{$k} ? $a2->{$k} : $DNE;

        push @Data_Stack, { type => 'HASH', idx => $k, vals => [$e1, $e2] };
        $ok = _deep_check($e1, $e2);
        pop @Data_Stack if $ok;

        last unless $ok;
    }

    return $ok;
}

#line 1361

sub eq_set  {
    my($a1, $a2) = @_;
    return 0 unless @$a1 == @$a2;

    # There's faster ways to do this, but this is easiest.
    local $^W = 0;

    # It really doesn't matter how we sort them, as long as both arrays are 
    # sorted with the same algorithm.
    #
    # Ensure that references are not accidentally treated the same as a
    # string containing the reference.
    #
    # Have to inline the sort routine due to a threading/sort bug.
    # See [rt.cpan.org 6782]
    #
    # I don't know how references would be sorted so we just don't sort
    # them.  This means eq_set doesn't really work with refs.
    return eq_array(
           [grep(ref, @$a1), sort( grep(!ref, @$a1) )],
           [grep(ref, @$a2), sort( grep(!ref, @$a2) )],
    );
}

#line 1551

1;