1 package DX::ShellSession;
4 use Scalar::Util qw(weaken);
7 use DX::Utils qw(deparse);
10 has shell_state => (is => 'rwp', required => 1, isa => ShellState);
13 is => 'lazy', builder => sub { DX::Expander->new(tcl => $_[0]->tcl) },
14 handles => [ qw(expand_args) ],
17 has tcl => (is => 'lazy', builder => sub {
21 $tcl->CreateCommand('?' => sub {
22 $self->apply_to_state([ 'new_query_state' ], [ mode => 'query' ]);
24 $tcl->CreateCommand('?+' => sub {
25 $self->apply_to_state([ mode => 'query' ]);
28 $tcl->CreateCommand('.' => sub {
29 $self->apply_to_state([ mode => 'shell' ]);
32 $tcl->CreateCommand(qlist => sub {
33 push our @Result, map [ output => $_ ], @{
34 $self->shell_state->current_query_state->proposition_sequence->members
38 $tcl->CreateCommand(qvars => $qvars = sub {
39 my $locals = $self->shell_state->current_query_state->search_state
40 ->current_hypothesis->scope->locals->[0];
41 push our @Result, [ output => $locals ];
44 $tcl->CreateCommand(qdeps => sub {
45 my $rps = $self->shell_state->current_query_state->search_state
46 ->current_hypothesis->resolved_propositions;
47 push our @Result, [ output => $rps ];
51 keys %{$self->shell_state->template_query_state->predicates}
53 $tcl->CreateCommand($pred => sub {
54 my (undef, undef, undef, @args) = @_; # ($data, $interp, $pred)
55 $self->apply_predicate($pred => @args);
62 my ($self, @to_apply) = @_;
63 my $state = $self->shell_state;
65 foreach my $to_apply (@to_apply) {
66 my ($change, @args) = @$to_apply;
67 ($state, my @this_result) = $state->${\"with_${change}"}(@args);
68 push @Result, @this_result;
70 $self->_set_shell_state($state);
74 sub is_complete_command_string {
75 my ($self, $string) = @_;
76 return !!$self->tcl->icall(info => complete => $string);
79 sub eval_command_string {
80 my ($self, $string) = @_;
83 $self->tcl->Eval($string);
85 push @Result, [ output => $_ ];
88 ($_->[0] eq 'output' and ref($_->[1]))
89 ? [ output => deparse($_->[1]) ]
95 my ($self, $pred, @arg_strings) = @_;
96 die "Can't call predicate ${pred} outside a query\n"
97 unless $self->shell_state->mode eq 'query';
98 my @args = $self->expand_args(@arg_strings);
99 my ($intro, $need) = ({}, {});
100 foreach my $arg (@args) {
102 # ?Foo is intro, Foo is need
103 ($arg =~ s/^\?// ? $intro : $need)->{$arg} = 1;
105 my $prop = DX::Proposition->new(
108 introduces_names => $intro,
109 requires_names => $need,
111 my $old_qstate = $self->shell_state->current_query_state;
112 my $qstate = $old_qstate->with_additional_proposition($prop);
113 my $old_action_count = @{
114 $old_qstate->search_state->current_hypothesis->actions
116 my @actions = @{$qstate->search_state->current_hypothesis->actions};
118 map [ output => $_ ], @actions[$old_action_count..$#actions];
119 $self->_set_shell_state(
120 $self->shell_state->but(
121 current_query_state => $qstate