|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace DataValues\Deserializers; |
|
4
|
|
|
|
|
5
|
|
|
use DataValues\DataValue; |
|
6
|
|
|
use Deserializers\DispatchableDeserializer; |
|
7
|
|
|
use Deserializers\Exceptions\DeserializationException; |
|
8
|
|
|
use Deserializers\Exceptions\MissingAttributeException; |
|
9
|
|
|
use Deserializers\Exceptions\MissingTypeException; |
|
10
|
|
|
use Deserializers\Exceptions\UnsupportedTypeException; |
|
11
|
|
|
use InvalidArgumentException; |
|
12
|
|
|
use RuntimeException; |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* @since 0.1 |
|
16
|
|
|
* |
|
17
|
|
|
* @license GPL-2.0+ |
|
18
|
|
|
* @author Jeroen De Dauw < [email protected] > |
|
19
|
|
|
* @author Thiemo Mättig |
|
20
|
|
|
*/ |
|
21
|
|
|
class DataValueDeserializer implements DispatchableDeserializer { |
|
22
|
|
|
|
|
23
|
|
|
const TYPE_KEY = 'type'; |
|
24
|
|
|
const VALUE_KEY = 'value'; |
|
25
|
|
|
|
|
26
|
|
|
/** |
|
27
|
|
|
* @var array Associative array mapping data type IDs to either callables returning new |
|
28
|
|
|
* DataValue objects, or full qualified DataValue class names. |
|
29
|
|
|
*/ |
|
30
|
|
|
private $builders; |
|
31
|
|
|
|
|
32
|
|
|
private $serialization; |
|
33
|
|
|
|
|
34
|
|
|
/** |
|
35
|
|
|
* @since 0.1, callables are supported since 1.1 |
|
36
|
|
|
* |
|
37
|
|
|
* @param array $builders Associative array mapping data type IDs to either callables, or full |
|
38
|
|
|
* qualified class names. Callables must accept a single value as specified by the |
|
39
|
|
|
* corresponding DataValue::getArrayValue, and return a new DataValue object. DataValue classes |
|
40
|
|
|
* given via class name must implement a static newFromArray method doing the same. |
|
41
|
|
|
*/ |
|
42
|
|
|
public function __construct( array $builders = array() ) { |
|
43
|
|
|
$this->assertAreDataValueClasses( $builders ); |
|
44
|
|
|
$this->builders = $builders; |
|
45
|
|
|
} |
|
46
|
|
|
|
|
47
|
|
|
private function assertAreDataValueClasses( array $builders ) { |
|
48
|
|
|
foreach ( $builders as $type => $builder ) { |
|
49
|
|
|
if ( !is_string( $type ) |
|
50
|
|
|
|| ( !is_callable( $builder ) && !$this->isDataValueClass( $builder ) ) |
|
51
|
|
|
) { |
|
52
|
|
|
throw new InvalidArgumentException( '$builders must map data types to callables or class names' ); |
|
53
|
|
|
} |
|
54
|
|
|
} |
|
55
|
|
|
} |
|
56
|
|
|
|
|
57
|
|
|
private function isDataValueClass( $class ) { |
|
58
|
|
|
return is_string( $class ) |
|
59
|
|
|
&& class_exists( $class ) |
|
60
|
|
|
&& in_array( 'DataValues\DataValue', class_implements( $class ) ); |
|
61
|
|
|
} |
|
62
|
|
|
|
|
63
|
|
|
/** |
|
64
|
|
|
* @see DispatchableDeserializer::isDeserializerFor |
|
65
|
|
|
* |
|
66
|
|
|
* @param mixed $serialization |
|
67
|
|
|
* |
|
68
|
|
|
* @return bool |
|
69
|
|
|
*/ |
|
70
|
|
|
public function isDeserializerFor( $serialization ) { |
|
71
|
|
|
$this->serialization = $serialization; |
|
72
|
|
|
|
|
73
|
|
|
try { |
|
74
|
|
|
$this->assertCanDeserialize(); |
|
75
|
|
|
return true; |
|
76
|
|
|
} |
|
77
|
|
|
catch ( RuntimeException $ex ) { |
|
78
|
|
|
return false; |
|
79
|
|
|
} |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
|
|
/** |
|
83
|
|
|
* @see Deserializer::deserialize |
|
84
|
|
|
* |
|
85
|
|
|
* @param mixed $serialization |
|
86
|
|
|
* |
|
87
|
|
|
* @throws DeserializationException |
|
88
|
|
|
* @return DataValue |
|
89
|
|
|
*/ |
|
90
|
|
|
public function deserialize( $serialization ) { |
|
91
|
|
|
$this->serialization = $serialization; |
|
92
|
|
|
|
|
93
|
|
|
$this->assertCanDeserialize(); |
|
94
|
|
|
return $this->getDeserialization(); |
|
95
|
|
|
} |
|
96
|
|
|
|
|
97
|
|
|
private function assertCanDeserialize() { |
|
98
|
|
|
$this->assertHasSupportedType(); |
|
99
|
|
|
$this->assertHasValue(); |
|
100
|
|
|
} |
|
101
|
|
|
|
|
102
|
|
|
private function assertHasSupportedType() { |
|
103
|
|
|
if ( !is_array( $this->serialization ) || !array_key_exists( self::TYPE_KEY, $this->serialization ) ) { |
|
104
|
|
|
throw new MissingTypeException(); |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
if ( !$this->hasSupportedType() ) { |
|
108
|
|
|
throw new UnsupportedTypeException( $this->getType() ); |
|
109
|
|
|
} |
|
110
|
|
|
} |
|
111
|
|
|
|
|
112
|
|
|
private function assertHasValue() { |
|
113
|
|
|
if ( !array_key_exists( self::VALUE_KEY, $this->serialization ) ) { |
|
114
|
|
|
throw new MissingAttributeException( self::VALUE_KEY ); |
|
115
|
|
|
} |
|
116
|
|
|
} |
|
117
|
|
|
|
|
118
|
|
|
private function hasSupportedType() { |
|
119
|
|
|
return array_key_exists( $this->getType(), $this->builders ); |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
private function getType() { |
|
123
|
|
|
return $this->serialization[self::TYPE_KEY]; |
|
124
|
|
|
} |
|
125
|
|
|
|
|
126
|
|
|
/** |
|
127
|
|
|
* @throws DeserializationException |
|
128
|
|
|
* @return DataValue |
|
129
|
|
|
*/ |
|
130
|
|
|
private function getDeserialization() { |
|
131
|
|
|
$builder = $this->builders[$this->getType()]; |
|
132
|
|
|
|
|
133
|
|
|
if ( is_callable( $builder ) ) { |
|
134
|
|
|
return $builder( $this->getValue() ); |
|
135
|
|
|
} |
|
136
|
|
|
|
|
137
|
|
|
try { |
|
138
|
|
|
return $builder::newFromArray( $this->getValue() ); |
|
139
|
|
|
} catch ( InvalidArgumentException $ex ) { |
|
140
|
|
|
throw new DeserializationException( $ex->getMessage(), $ex ); |
|
141
|
|
|
} |
|
142
|
|
|
} |
|
143
|
|
|
|
|
144
|
|
|
private function getValue() { |
|
145
|
|
|
return $this->serialization[self::VALUE_KEY]; |
|
146
|
|
|
} |
|
147
|
|
|
|
|
148
|
|
|
} |
|
149
|
|
|
|
DataValues /
Serialization
