Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
Total | |
0.00% |
0 / 2 |
|
0.00% |
0 / 2 |
CRAP | |
0.00% |
0 / 1 |
JsonCodecableTrait | |
0.00% |
0 / 2 |
|
0.00% |
0 / 2 |
6 | |
0.00% |
0 / 1 |
jsonClassCodec | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
toJsonArray | n/a |
0 / 0 |
n/a |
0 / 0 |
0 | |||||
newFromJsonArray | n/a |
0 / 0 |
n/a |
0 / 0 |
0 | |||||
jsonClassHintFor | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 |
1 | <?php |
2 | declare( strict_types=1 ); |
3 | |
4 | /** |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation; either version 2 of the License, or |
8 | * (at your option) any later version. |
9 | * |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * GNU General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU General Public License along |
16 | * with this program; if not, write to the Free Software Foundation, Inc., |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
18 | * http://www.gnu.org/copyleft/gpl.html |
19 | * |
20 | * @file |
21 | */ |
22 | |
23 | namespace Wikimedia\JsonCodec; |
24 | |
25 | use Psr\Container\ContainerInterface; |
26 | use stdClass; |
27 | |
28 | /** |
29 | * The JsonCodecableTrait aids in the implementation of stateless codecs. |
30 | * The class using the trait need only define stateless ::toJsonArray() and |
31 | * ::newFromJsonArray() methods. |
32 | * |
33 | * The class using the trait should also implement JsonCodecable |
34 | * (https://wiki.php.net/rfc/traits-with-interfaces may allow the trait |
35 | * to do this directly in a future PHP version). |
36 | */ |
37 | trait JsonCodecableTrait { |
38 | |
39 | /** |
40 | * Implements JsonCodecable by providing an implementation of |
41 | * ::jsonClassCodec() which does not use the provided $serviceContainer |
42 | * nor does it maintain any state; it just calls the ::toJsonArray() |
43 | * and ::newFromJsonArray() methods of this instance. |
44 | * @param JsonCodecInterface $codec |
45 | * @param ContainerInterface $serviceContainer |
46 | * @return JsonClassCodec |
47 | */ |
48 | public static function jsonClassCodec( |
49 | JsonCodecInterface $codec, ContainerInterface $serviceContainer |
50 | ): JsonClassCodec { |
51 | // In advanced JIT implementations optimization of the method |
52 | // dispatch in this class can be performed if we keep the |
53 | // codecs for each class separate. However, for simplicity |
54 | // (and to reduce memory usage) we'll use a singleton object |
55 | // shared with all classes which use this trait. |
56 | return JsonStaticClassCodec::getInstance(); |
57 | } |
58 | |
59 | /** |
60 | * Return an associative array representing the contents of this object, |
61 | * which can be passed to ::newFromJsonArray() to deserialize it. |
62 | * @return array |
63 | */ |
64 | abstract public function toJsonArray(): array; |
65 | |
66 | /** |
67 | * Return an instance of this object representing the deserialization |
68 | * from the array passed in $json. |
69 | * @param array $json |
70 | * @return stdClass |
71 | */ |
72 | abstract public static function newFromJsonArray( array $json ); |
73 | |
74 | /** |
75 | * Return an optional type hint for the given array key in the result of |
76 | * ::toJsonArray() / input to ::newFromJsonArray. If a class name is |
77 | * returned here and it matches the runtime type of the value of that |
78 | * array key, then type information will be omitted from the generated |
79 | * JSON which can save space. The class name can be suffixed with `[]` |
80 | * to indicate an array or list containing objects of the given class |
81 | * name. |
82 | * |
83 | * Default implementation of ::jsonClassHintFor() provides no hints. |
84 | * Implementer can override. |
85 | * |
86 | * @param string $keyName |
87 | * @return class-string|string|null A class string, a class string suffixed |
88 | * with `[]`, or null |
89 | */ |
90 | public static function jsonClassHintFor( string $keyName ): ?string { |
91 | return null; |
92 | } |
93 | } |