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|
use 5.012000;
use strict;
use warnings;
no warnings qw( uninitialized void once );
use Keyword::Simple ();
use PerlX::Assert ();
package PerlX::Assert::Keyword;
our $AUTHORITY = 'cpan:TOBYINK';
our $VERSION = '0.905';
our @ISA = qw( PerlX::Assert );
sub _install_assert
{
my $class = shift;
my ($subname, $globals) = @_;
my $caller = $globals->{into};
my $active = $globals->{check};
Keyword::Simple::define($subname, sub
{
my $ref = shift;
_eat_space($ref);
my $name;
if ($$ref =~ /\A(qq\b|q\b|'|")/)
{
require Text::Balanced;
$name = Text::Balanced::extract_quotelike($$ref);
_eat_space($ref);
if ($$ref =~ /\A,/)
{
substr($$ref, 0, 1) = '';
_eat_space($ref);
if ($$ref =~ /\A\{/)
{
require Carp;
Carp::croak("Unexpected comma between assertion name and block");
};
}
}
substr($$ref, 0, 0) = $class->_injection(
$active,
$name,
scalar($$ref =~ /\A\{/),
);
});
}
sub _eat_space
{
my $ref = shift;
my $X;
while (
($$ref =~ m{\A( \s+ )}x and $X = 1)
or ($$ref =~ m{\A\#} and $X = 2)
) {
$X==2
? ($$ref =~ s{\A\#.+?\n}{}sm)
: (substr($$ref, 0, length($1)) = '');
}
return;
}
sub _injection
{
shift;
my ($active, $name, $do) = @_;
$do = $do ? "do " : "";
return "() and $do"
if not $active;
return "die sprintf q[Assertion failed: %s], $name unless $do"
if defined $name;
return "die q[Assertion failed] unless $do";
}
__PACKAGE__
__END__
|
