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package Class::MOP::Method::Generated;
use strict;
use warnings;
use Carp 'confess';
our $VERSION = '1.04';
$VERSION = eval $VERSION;
our $AUTHORITY = 'cpan:STEVAN';
use base 'Class::MOP::Method';
use constant _PRINT_SOURCE => $ENV{MOP_PRINT_SOURCE} ? 1 : 0;
## accessors
sub new {
confess __PACKAGE__ . " is an abstract base class, you must provide a constructor.";
}
sub is_inline { $_[0]{is_inline} }
sub definition_context { $_[0]{definition_context} }
sub _initialize_body {
confess "No body to initialize, " . __PACKAGE__ . " is an abstract base class";
}
sub _eval_closure {
# my ($self, $captures, $sub_body) = @_;
my $__captures = $_[1];
my $code;
my $e = do {
local $@;
local $SIG{__DIE__};
my $source = join
"\n", (
map {
/^([\@\%\$])/
or die "capture key should start with \@, \% or \$: $_";
q[my ]
. $_ . q[ = ]
. $1
. q[{$__captures->{']
. $_ . q['}};];
} keys %$__captures
),
$_[2];
print STDERR "\n", $_[0]->name, ":\n", $source, "\n" if _PRINT_SOURCE;
$code = eval $source;
$@;
};
return ( $code, $e );
}
sub _add_line_directive {
my ( $self, %args ) = @_;
my ( $line, $file );
if ( my $ctx = ( $args{context} || $self->definition_context ) ) {
$line = $ctx->{line};
if ( my $desc = $ctx->{description} ) {
$file = "$desc defined at $ctx->{file}";
} else {
$file = $ctx->{file};
}
} else {
( $line, $file ) = ( 0, "generated method (unknown origin)" );
}
my $code = $args{code};
# if it's an array of lines, join it up
# don't use newlines so that the definition context is more meaningful
$code = join(@$code, ' ') if ref $code;
return qq{#line $line "$file"\n} . $code;
}
sub _compile_code {
my ( $self, %args ) = @_;
my $code = $self->_add_line_directive(%args);
return $self->_eval_closure($args{environment}, $code);
}
1;
__END__
=pod
=head1 NAME
Class::MOP::Method::Generated - Abstract base class for generated methods
=head1 DESCRIPTION
This is a C<Class::MOP::Method> subclass which is subclassed by
C<Class::MOP::Method::Accessor> and
C<Class::MOP::Method::Constructor>.
It is not intended to be used directly.
=head1 AUTHORS
Stevan Little E<lt>stevan@iinteractive.comE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright 2006-2010 by Infinity Interactive, Inc.
L<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
|
