use Term::ReadLine;
use Moose;
-use namespace::clean;
+use namespace::clean -except => [ 'meta' ];
+use 5.8.1; # might work with earlier perls but probably not
+
+our $VERSION = '1.001000'; # 1.1.0
with 'MooseX::Object::Pluggable';
my ($self) = @_;
my $line = $self->read;
return unless defined($line); # undefined value == EOF
- my @ret = $self->execute($line);
+ my @ret = $self->eval($line);
$self->print(@ret);
return 1;
}
return $self->term->readline($self->prompt);
}
+sub eval {
+ my ($self, $line) = @_;
+ my ($to_exec, @rest) = $self->compile($line);
+ return @rest unless defined($to_exec);
+ my @ret = $self->execute($to_exec);
+ return @ret;
+}
+
+sub compile {
+ my $_REPL = shift;
+ my $compiled = eval $_REPL->wrap_as_sub($_[0]);
+ return (undef, $_REPL->error_return("Compile error", $@)) if $@;
+ return $compiled;
+}
+
+sub wrap_as_sub {
+ my ($self, $line) = @_;
+ return qq!sub {\n!.$self->mangle_line($line).qq!\n}\n!;
+}
+
+sub mangle_line {
+ my ($self, $line) = @_;
+ return $line;
+}
+
sub execute {
- my ($self, $to_exec) = @_;
- my @ret = eval $to_exec;
- @ret = ("ERROR: $@") if $@;
+ my ($self, $to_exec, @args) = @_;
+ my @ret = eval { $to_exec->(@args) };
+ return $self->error_return("Runtime error", $@) if $@;
return @ret;
}
+sub error_return {
+ my ($self, $type, $error) = @_;
+ return "${type}: ${error}";
+}
+
sub print {
my ($self, @ret) = @_;
my $fh = $self->out_fh;
+ no warnings 'uninitialized';
print $fh "@ret";
}
+=head1 NAME
+
+Devel::REPL - a modern perl interactive shell
+
+=head1 SYNOPSIS
+
+ my $repl = Devel::REPL->new;
+ $repl->load_plugin($_) for qw(History LexEnv);
+ $repl->run
+
+Alternatively, use the 're.pl' script installed with the distribution
+
+ system$ re.pl
+
+=head1 AUTHOR
+
+Matt S Trout - mst (at) shadowcatsystems.co.uk (L<http://www.shadowcatsystems.co.uk/>)
+
+=head1 LICENSE
+
+This library is free software under the same terms as perl itself
+
+=cut
+
1;