Commit | Line | Data |
dc28afe8 |
1 | package Object::Remote::Future; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use base qw(Exporter); |
6 | |
7 | use CPS::Future; |
8 | |
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9 | our @EXPORT = qw(future await_future await_all); |
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10 | |
11 | sub future (&) { |
12 | my $f = $_[0]->(CPS::Future->new); |
13 | return $f if ((caller(1)||'') eq 'start'); |
14 | await_future($f); |
15 | } |
16 | |
17 | sub await_future { |
18 | my $f = shift; |
19 | return $f if $f->is_ready; |
20 | require Object::Remote; |
21 | my $loop = Object::Remote->current_loop; |
22 | $f->on_ready(sub { $loop->stop }); |
23 | $loop->run; |
24 | return wantarray ? $f->get : ($f->get)[0]; |
25 | } |
26 | |
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27 | sub await_all { |
28 | await_future(CPS::Future->needs_all(@_)); |
29 | map $_->get, @_; |
30 | } |
31 | |
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32 | package start; |
33 | |
34 | sub AUTOLOAD { |
35 | my $invocant = shift; |
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36 | my ($method) = our $AUTOLOAD =~ /^start::(.+)$/; |
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37 | my $res; |
38 | unless (eval { $res = $invocant->$method(@_); 1 }) { |
39 | my $f = CPS::Future->new; |
40 | $f->fail($@); |
41 | return $f; |
42 | } |
43 | unless (Scalar::Util::blessed($res) and $res->isa('CPS::Future')) { |
44 | my $f = CPS::Future->new; |
45 | $f->done($res); |
46 | return $f; |
47 | } |
48 | return $res; |
49 | } |
50 | |
11e7c8a5 |
51 | package then; |
52 | |
53 | sub AUTOLOAD { |
54 | my $invocant = shift; |
55 | my ($method) = our $AUTOLOAD =~ /^then::(.+)$/; |
56 | my @args = @_; |
57 | # Need two copies since if we're called on an already complete future |
58 | # $f will be freed immediately |
59 | my $ret = my $f = CPS::Future->new; |
60 | $invocant->on_fail(sub { $f->fail(@_); undef($f); }); |
61 | $invocant->on_done(sub { |
62 | my ($obj) = @_; |
63 | my $next = $obj->${\"start::${method}"}(@args); |
64 | $next->on_done(sub { $f->done(@_); undef($f); }); |
65 | $next->on_fail(sub { $f->fail(@_); undef($f); }); |
66 | }); |
67 | return $ret; |
68 | } |
69 | |
dc28afe8 |
70 | 1; |
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71 | |
72 | =head1 NAME |
73 | |
74 | Object::Remote::Future - Asynchronous calling for L<Object::Remote> |
75 | |
76 | =head1 LAME |
77 | |
78 | Shipping prioritised over writing this part up. Blame mst. |
79 | |
80 | =cut |