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#!/usr/bin/perl
use Alias qw(alias const attr);
my $TNUM = 0;
sub T { ++$TNUM; my $res = shift; print $res ? "ok $TNUM\n" : "not ok $TNUM\n" };
print "1..34\n";
$TEN = "";
$ten = 10;
$TWENTY = 20;
alias TEN => $ten, TWENTY => \*ten;
print '#\\$TEN is ', \$TEN, "\n";
print '#\\$ten is ', \$ten, "\n";
T(\$TEN eq \$ten);
T($TEN eq $TWENTY);
const _TEN_ => \10;
eval { $_TEN_ = 20 };
T($@);
$dyn = "abcd";
{
local $dyn;
alias dyn => "pqrs";
T($dyn eq "pqrs");
}
T($dyn eq "abcd");
my($lex) = 'abcd';
$closure = sub { return "$lex"; };
alias NAMEDCLOSURE => \&$closure;
$lex = 'pqrs';
T(NAMEDCLOSURE() eq "pqrs");
package Foo;
# "in life", my moma always said, "you gotta pass those tests
# before you can be o' some use to yerself" :-)
*T = \&main::T;
use Alias;
sub new { bless { foo => 1,
bar => [2,3],
buz => { a => 4},
fuz => *easy,
privmeth => sub { "private" },
easymeth => sub { die "to recurse or to die, is the question" },
},
$_[0];
}
sub easy { "gulp" }
sub easymeth {
my $s = attr shift; # localizes $foo, @bar, and %buz with hash values
T(defined($s) and ref($s) eq 'Foo');
T(defined (*fuz) and ref(\*fuz) eq ref(\*easy));
print '#easy() is ', easy(), "\n";
print '#fuz() is ', fuz(), "\n";
T(easy() eq fuz());
eval { $s->easymeth }; # should fail
print "#\$\@ is: $@\n";
T($@);
join '|', $foo, @bar, %buz, $s->privmeth;
}
$foo = 6;
@bar = (7,8);
%buz = (b => 9);
T(Foo->new->easymeth eq '1|2|3|a|4|private');
T(join('|', $foo, @bar, %buz) eq '6|7|8|b|9');
eval { fuz() }; # the local subroutine shouldn't be here now
print "# after fuz(): $@";
T($@);
eval { Foo->new->privmeth }; # private method shouldn't exist either
print "# after Foo->new->privmeth: $@";
T($@);
package Bar;
*T = \&main::T;
use Alias;
$Alias::KeyFilter = "_";
$Alias::AttrPrefix = "s";
$Alias::Deref = "";
sub new {
my $s = { _foo => 1,
_bar => [2,3],
buz => { a => 4},
fuz => *easy,
_privmeth => sub { "private" },
_easymeth => sub { "recursion" },
};
$s->{_this} = $s;
return bless $s, $_[0];
}
sub easy { "gulp" }
sub s_easymeth {
my $s = attr shift; # localizes $s_foo, @s_bar, and %s_buz
T($s and ref($s) eq 'Bar');
print "# |$s_this|$s|\n";
T(defined($s_this) and $s_this eq $s);
T(not defined &fuz);
T(not defined &s_fuz);
T(not scalar (keys %s_buz));
T($s->s_easymeth eq "recursion");
join '|', $s_foo, @s_bar, %buz, $s->s_privmeth;
}
$s_foo = 6;
@s_bar = (7,8);
%s_buz = ();
%buz = (b => 9);
T(Bar->new->s_easymeth eq '1|2|3|b|9|private');
T(join('|', $s_foo, @s_bar) eq '6|7|8');
{
local $Alias::Deref = 1;
my $s = attr(Bar->new);
T(!$s_this and \%s_this eq $s);
}
eval { Bar->new->s_privmeth }; # private method shouldn't exist either
print "# after Bar->new->s_privmeth: $@";
T($@);
package Baz;
*T = \&main::T;
use Alias;
$Alias::KeyFilter = sub {
local $_ = shift;
my($r) = (/^_.+_$/ ? 1 : 0);
print "# |$_, $r|\n";
return $r
};
$Alias::AttrPrefix = sub {
local $_ = shift; s/^_(.+)_$/$1/;
return "s_$_" if /meth$/;
return "main::s_$_"
};
$Alias::Deref = sub { my($n, $v) = @_; ; my $r = $n ne "_this_"; print "# |$n, $v, $r|\n"; return $r};
sub new {
my $s = bless { _foo_ => 1,
_bar_ => [2,3],
buz_ => { a => 4},
fuz_ => *easy,
_privmeth_ => sub { "private" },
_easymeth_ => sub { "recursion" },
},
$_[0];
$s->{_this_} = $s;
$s->{_other_} = $s;
return $s;
}
sub easy { "gulp" }
sub s_easymeth {
my $s = attr shift; # localizes $s_foo, @s_bar, and %s_buz
print "# |", $::s_this, "|$s|\n";
T($::s_this and $::s_this eq $s);
print "# |", join(',', keys %::s_other),"|$s|\n";
T(!$::s_other and \%::s_other eq $s);
T(defined($s) and ref($s) eq 'Baz');
T(not defined &::fuz_);
T(not defined &::s_fuz);
T(not %::s_buz);
T($s->s_easymeth eq "recursion");
join '|', $::s_foo, @::s_bar, %::buz_, $s->s_privmeth;
}
$::s_foo = 6;
@::s_bar = (7,8);
%::s_buz = ();
%::buz_ = (b => 9);
T(Baz->new->s_easymeth eq '1|2|3|b|9|private');
T(join('|', $::s_foo, @::s_bar) eq '6|7|8');
eval { Baz->new->s_privmeth }; # private method shouldn't exist either
print "# after Baz->new->s_privmeth: $@";
T($@);
__END__
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