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CheckDefinitionValidityPass.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * file that was distributed with this source code.
10 */
11
12 namespace Symfony\Component\DependencyInjection\Compiler;
13
14 use Symfony\Component\DependencyInjection\ContainerInterface;
15 use Symfony\Component\DependencyInjection\ContainerBuilder;
16 use Symfony\Component\DependencyInjection\Exception\RuntimeException;
17
18 /**
19 * This pass validates each definition individually only taking the information
20 * into account which is contained in the definition itself.
21 *
22 * Later passes can rely on the following, and specifically do not need to
23 * perform these checks themselves:
24 *
25 * - non synthetic, non abstract services always have a class set
26 * - synthetic services are always public
27 * - synthetic services are always of non-prototype scope
28 *
29 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
30 */
31 class CheckDefinitionValidityPass implements CompilerPassInterface
32 {
33 /**
34 * Processes the ContainerBuilder to validate the Definition.
35 *
36 * @param ContainerBuilder $container
37 *
38 * @throws RuntimeException When the Definition is invalid
39 */
40 public function process(ContainerBuilder $container)
41 {
42 foreach ($container->getDefinitions() as $id => $definition) {
43 // synthetic service is public
44 if ($definition->isSynthetic() && !$definition->isPublic()) {
45 throw new RuntimeException(sprintf(
46 'A synthetic service ("%s") must be public.',
47 $id
48 ));
49 }
50
51 // synthetic service has non-prototype scope
52 if ($definition->isSynthetic() && ContainerInterface::SCOPE_PROTOTYPE === $definition->getScope()) {
53 throw new RuntimeException(sprintf(
54 'A synthetic service ("%s") cannot be of scope "prototype".',
55 $id
56 ));
57 }
58
59 // non-synthetic, non-abstract service has class
60 if (!$definition->isAbstract() && !$definition->isSynthetic() && !$definition->getClass()) {
61 if ($definition->getFactoryClass() || $definition->getFactoryService()) {
62 throw new RuntimeException(sprintf(
63 'Please add the class to service "%s" even if it is constructed by a factory '
64 .'since we might need to add method calls based on compile-time checks.',
65 $id
66 ));
67 }
68
69 throw new RuntimeException(sprintf(
70 'The definition for "%s" has no class. If you intend to inject '
71 .'this service dynamically at runtime, please mark it as synthetic=true. '
72 .'If this is an abstract definition solely used by child definitions, '
73 .'please add abstract=true, otherwise specify a class to get rid of this error.',
74 $id
75 ));
76 }
77 }
78 }
79 }
80