6 use DX::Op::MemberLookup;
7 use DX::Op::ApplyConstraint;
9 use List::Util qw(reduce);
11 has rules => (is => 'ro', default => sub { {} });
14 my ($self, $name, $vars, @body) = @_;
15 my $full_name = join('/', $name, scalar @$vars);
16 push @{$self->rules->{$full_name}}, $self->_make_rule($vars, @body);
21 my ($self, $vars, @body) = @_;
22 my $head = reduce { $b->but(next => $a) }
24 reverse map $self->expand(@$_), @body;
29 my ($self, $type, @rest) = @_;
30 if ($self->can(my $expand_meth = "_expand_${type}")) {
31 return $self->$expand_meth(@rest);
33 return $self->_expand_call($type, @rest);
37 my ($self, $name, @args) = @_;
38 DX::Op::CallRule->new(rule_name => $name, rule_args => \@args);
41 sub _expand_member_of {
42 my ($self, $member_var, $coll_name) = @_;
43 DX::Op::MemberOf->new(
44 member_var => $member_var,
45 coll_name => $coll_name,
49 sub _expand_member_lookup {
50 my ($self, $member_var, $coll_name, $key_name, $key_var) = @_;
51 DX::Op::MemberLookup->new(
52 member_var => $member_var,
53 coll_name => $coll_name,
54 key_name => $key_name,
59 sub _expand_constrain {
60 my ($self, $vars, $constraint) = @_;
61 DX::Op::ApplyConstraint->new(
63 constraint => $constraint