Commit | Line | Data |
2c467394 |
1 | package DX::Op::ModifyAction; |
2 | |
3 | use DX::ObservationRequired; |
4 | use Moo; |
5 | |
6 | with 'DX::Role::Op'; |
7 | |
8 | has vars => (is => 'ro', required => 1); |
9 | has builder => (is => 'ro', required => 1); |
10 | |
11 | has _arg_map => (is => 'lazy', builder => sub { |
12 | my ($self) = @_; |
13 | my $name = 'arg0'; |
14 | +{ map +($name++, $_), @{$self->vars} }; |
15 | }); |
16 | |
17 | sub run { |
18 | my ($self, $state) = @_; |
19 | ($state, my %args) = $self->_expand_args($state, %{$self->_arg_map}); |
20 | my ($subject, @vars) = @args{sort keys %args}; |
21 | die "Can't alter action on $subject" unless |
22 | my $orig_action = $state->resolve_value($subject)->required_action; |
23 | my @deps = $state->action_dependencies( |
24 | @{$orig_action->dependencies}, |
25 | map $_->id, @vars |
26 | ); |
27 | my @builder_args = ( |
28 | $orig_action, |
29 | map $state->resolve_value($_), @vars |
30 | ); |
31 | my $action = $self->builder->(@builder_args) |
32 | ->but(dependencies => \@deps); |
33 | my ($fact_type, $value) = $action->expected_effect; |
34 | my $final_value = $value->but(required_action => $action); |
35 | my $fact_set = $state->facts->{$fact_type}->with_value($final_value); |
36 | $state->but(facts => { %{$state->facts}, $fact_type => $fact_set }) |
37 | ->then($self->next); |
38 | } |
39 | |
40 | 1; |