make protoshell handle errors

[scpubgit/DX.git] / bin / protoshell

use strictures 2;
use Module::Runtime qw(use_module);
use DX::Utils qw(dict deparse);
use Devel::Dwarn;
use Try::Tiny;
BEGIN { *u = \&use_module }

my $scope = u('DX::Scope')->new(
  predicates => {
    map +(
      $_ => u('DX::Predicate::'.join('', map ucfirst, split '_', $_))->new
    ), qw(eq member_at is_dict)
  },
  globals => dict(),
  locals => [],
);

my $exp = u('DX::Expander')->new;

my $tcl = u('Tcl')->new;

foreach my $pred (keys %{$scope->predicates}) {
  $tcl->CreateCommand($pred => sub {
    my (undef, undef, undef, @args) = @_;
    Dwarn [ $pred, $exp->expand_args(@args) ];
  });
}

my $rl = u('Caroline')->new;

while (my $line = $rl->readline('$ ')) {
  try {
    $tcl->Eval($line);
  } catch {
    warn "Eval error: $_";
  };
  $rl->history_add($line);
}