3 use aliased 'DX::Op::FromCode';
4 use aliased 'DX::ArrayStream';
18 my @shells = qw(csh bash);
21 bash => { map +($_ => 1),
22 qw(joe.example.com kitty.scsys.co.uk pryde.scsys.co.uk) },
23 csh => { map +($_ => 1),
24 qw(jim.example.com joe.example.com bob.example.com) },
28 my ($var, $array) = @_;
30 my ($self, $state) = @_;
31 $state->bind_stream_then(
32 $state->scope_var($var),
33 ArrayStream->from_array(@$array),
40 my ($vars, $test) = @_;
42 my ($self, $state) = @_;
43 my @values = map $state->scope_var($_)->bound_value, @$vars;
44 if ($test->(@values)) {
45 return $state->then($self->next);
47 return $state->backtrack;
54 code => bind_array(S => \@servers),
55 next => FromCode->new(
56 code => test_values([ 'S' ], sub { $_[0] =~ /\.example\.com$/ }),
67 my %scope = map +($_ => $_), @{$vars};
68 my %by_id = map +($_ => DX::Var->new(id => $_)), @{$vars};
79 my $stream = DX::ResultStream->new(for_state => make_state([ 'S' ], $op));
81 is($stream->next->{'S'}, $_)
82 for qw(jim.example.com joe.example.com bob.example.com);
84 is($stream->next, undef, 'No more');
86 my $complex_op = FromCode->new(
87 code => bind_array(S => \@servers),
88 next => FromCode->new(
89 code => test_values([ 'S' ], sub { $_[0] =~ /\.example\.com$/ }),
90 next => FromCode->new(
91 code => bind_array(P => \@shells),
92 next => FromCode->new(
93 code => test_values([ qw(S P) ], sub { $shells{$_[1]}{$_[0]} }),
99 my $cstream = DX::ResultStream->new(
100 for_state => make_state([ qw(S P) ], $complex_op)
104 [ $cstream->results ],
106 { P => 'csh', S => 'jim.example.com' },
107 { P => 'csh', S => 'joe.example.com' },
108 { P => 'bash', S => 'joe.example.com' },
109 { P => 'csh', S => 'bob.example.com' },
114 my $inner_op = make_op(FromCode->new(
116 my ($self, $state) = @_;
117 my @stack = @{$state->return_stack};
118 my $top = pop @stack;
119 $state->but(return_stack => \@stack, next_op => $top);
123 my $call_op = FromCode->new(
125 my ($self, $state) = @_;
126 my @rst = @{$state->return_stack};
127 my $save_scope = $state->scope;
128 my %scope = (S => $save_scope->{S});
129 my $ret_op = FromCode->new(
130 code => sub { $_[1]->but(scope => $save_scope, next_op => $_[0]->next) },
135 return_stack => [ @rst, $ret_op ],
139 next => FromCode->new(
140 code => bind_array(P => \@shells),
141 next => FromCode->new(
142 code => test_values([ qw(S P) ], sub { $shells{$_[1]}{$_[0]} }),
147 my $callstream = DX::ResultStream->new(
148 for_state => make_state([ qw(S P) ], $call_op)
152 [ $callstream->results ],
154 { P => 'csh', S => 'jim.example.com' },
155 { P => 'csh', S => 'joe.example.com' },
156 { P => 'bash', S => 'joe.example.com' },
157 { P => 'csh', S => 'bob.example.com' },