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Commit bbaea98

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chalasrchalasr
committed
[DI] Replace container injection by explicit service locators
1 parent 91904af commit bbaea98
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34 files changed

+455
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lines changed

‎src/Symfony/Component/DependencyInjection/Argument/ServiceLocatorArgument.php

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+44Lines changed: 44 additions & 0 deletions
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@@ -0,0 +1,44 @@
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
9+
* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DependencyInjection\Argument;
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use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
15+
16+
/**
17+
* Represents a service locator able to lazy load a given range of services.
18+
*
19+
* @author Robin Chalas <robin.chalas@gmail.com>
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*
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* @experimental in version 3.3
22+
*/
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class ServiceLocatorArgument implements ArgumentInterface
24+
{
25+
private $values;
26+
27+
/**
28+
* @param array $values An array of mixed entries indexed by identifier
29+
*/
30+
public function __construct(array $values)
31+
{
32+
$this->values = $values;
33+
}
34+
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public function getValues()
36+
{
37+
return $this->values;
38+
}
39+
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public function setValues(array $values)
41+
{
42+
$this->values = $values;
43+
}
44+
}

‎src/Symfony/Component/DependencyInjection/CHANGELOG.md

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/CHANGELOG.md
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@@ -4,6 +4,7 @@ CHANGELOG
44
3.3.0
55
-----
66

7+
* [EXPERIMENTAL] added "service-locator" argument for lazy loading a set of identified values and services
78
* [EXPERIMENTAL] added prototype services for PSR4-based discovery and registration
89
* added `ContainerBuilder::getReflectionClass()` for retrieving and tracking reflection class info
910
* deprecated `ContainerBuilder::getClassResource()`, use `ContainerBuilder::getReflectionClass()` or `ContainerBuilder::addObjectResource()` instead

‎src/Symfony/Component/DependencyInjection/ContainerBuilder.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+10Lines changed: 10 additions & 0 deletions
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@@ -14,6 +14,7 @@
1414
use Symfony\Component\DependencyInjection\Argument\ClosureProxyArgument;
1515
use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
1616
use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
17+
use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
1718
use Symfony\Component\DependencyInjection\Compiler\Compiler;
1819
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
1920
use Symfony\Component\DependencyInjection\Compiler\PassConfig;
@@ -1122,6 +1123,15 @@ public function resolveServices($value)
11221123
foreach ($value as $k => $v) {
11231124
$value[$k] = $this->resolveServices($v);
11241125
}
1126+
} elseif ($value instanceof ServiceLocatorArgument) {
1127+
$parameterBag = $this->getParameterBag();
1128+
$services = array();
1129+
foreach ($value->getValues() as $k => $v) {
1130+
$services[$k] = function () use ($v, $parameterBag) {
1131+
return $this->resolveServices($parameterBag->unescapeValue($parameterBag->resolveValue($v)));
1132+
};
1133+
}
1134+
$value = new ServiceLocator($services);
11251135
} elseif ($value instanceof IteratorArgument) {
11261136
$parameterBag = $this->getParameterBag();
11271137
$value = new RewindableGenerator(function () use ($value, $parameterBag) {

‎src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+10Lines changed: 10 additions & 0 deletions
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@@ -13,6 +13,7 @@
1313

1414
use Symfony\Component\DependencyInjection\Argument\ClosureProxyArgument;
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use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
16+
use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
1617
use Symfony\Component\DependencyInjection\Variable;
1718
use Symfony\Component\DependencyInjection\Definition;
1819
use Symfony\Component\DependencyInjection\ContainerBuilder;
@@ -897,6 +898,7 @@ private function startClass($class, $baseClass, $namespace)
897898
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
898899
use Symfony\Component\DependencyInjection\Exception\LogicException;
899900
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
901+
use Symfony\Component\DependencyInjection\ServiceLocator;
900902
$bagClass
901903
902904
/*{$this->docStar}
@@ -1536,6 +1538,14 @@ private function dumpValue($value, $interpolate = true)
15361538
}
15371539

15381540
return sprintf('array(%s)', implode(', ', $code));
1541+
} elseif ($value instanceof ServiceLocatorArgument) {
1542+
$code = "\n";
1543+
foreach ($value->getValues() as $k => $v) {
1544+
$code .= sprintf(" %s => function () { return %s; },\n", $this->dumpValue($k, $interpolate), $this->dumpValue($v, $interpolate));
1545+
}
1546+
$code .= ' ';
1547+
1548+
return sprintf('new ServiceLocator(array(%s))', $code);
15391549
} elseif ($value instanceof IteratorArgument) {
15401550
$countCode = array();
15411551
$countCode[] = 'function () {';

‎src/Symfony/Component/DependencyInjection/Dumper/XmlDumper.php

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+4Lines changed: 4 additions & 0 deletions
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@@ -13,6 +13,7 @@
1313

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use Symfony\Component\DependencyInjection\Argument\ClosureProxyArgument;
1515
use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
16+
use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
1617
use Symfony\Component\DependencyInjection\ContainerInterface;
1718
use Symfony\Component\DependencyInjection\Parameter;
1819
use Symfony\Component\DependencyInjection\Reference;
@@ -291,6 +292,9 @@ private function convertParameters(array $parameters, $type, \DOMElement $parent
291292
if (is_array($value)) {
292293
$element->setAttribute('type', 'collection');
293294
$this->convertParameters($value, $type, $element, 'key');
295+
} elseif ($value instanceof ServiceLocatorArgument) {
296+
$element->setAttribute('type', 'service-locator');
297+
$this->convertParameters($value->getValues(), $type, $element);
294298
} elseif ($value instanceof IteratorArgument) {
295299
$element->setAttribute('type', 'iterator');
296300
$this->convertParameters($value->getValues(), $type, $element, 'key');

‎src/Symfony/Component/DependencyInjection/Dumper/YamlDumper.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Dumper/YamlDumper.php
+3Lines changed: 3 additions & 0 deletions
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@@ -17,6 +17,7 @@
1717
use Symfony\Component\DependencyInjection\Argument\ArgumentInterface;
1818
use Symfony\Component\DependencyInjection\Argument\ClosureProxyArgument;
1919
use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
20+
use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
2021
use Symfony\Component\DependencyInjection\ContainerInterface;
2122
use Symfony\Component\DependencyInjection\Definition;
2223
use Symfony\Component\DependencyInjection\Parameter;
@@ -258,6 +259,8 @@ private function dumpValue($value)
258259
$tag = 'iterator';
259260
} elseif ($value instanceof ClosureProxyArgument) {
260261
$tag = 'closure_proxy';
262+
} elseif ($value instanceof ServiceLocatorArgument) {
263+
$tag = 'service_locator';
261264
} else {
262265
throw new RuntimeException(sprintf('Unspecified Yaml tag for type "%s".', get_class($value)));
263266
}

‎src/Symfony/Component/DependencyInjection/Loader/XmlFileLoader.php

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@@ -17,6 +17,7 @@
1717
use Symfony\Component\DependencyInjection\Alias;
1818
use Symfony\Component\DependencyInjection\Argument\ClosureProxyArgument;
1919
use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
20+
use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
2021
use Symfony\Component\DependencyInjection\Definition;
2122
use Symfony\Component\DependencyInjection\ChildDefinition;
2223
use Symfony\Component\DependencyInjection\Reference;
@@ -498,6 +499,9 @@ private function getArgumentsAsPhp(\DOMElement $node, $name, $lowercase = true,
498499
case 'iterator':
499500
$arguments[$key] = new IteratorArgument($this->getArgumentsAsPhp($arg, $name, false));
500501
break;
502+
case 'service-locator':
503+
$arguments[$key] = new ServiceLocatorArgument($this->getArgumentsAsPhp($arg, $name, false));
504+
break;
501505
case 'string':
502506
$arguments[$key] = $arg->nodeValue;
503507
break;

‎src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
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@@ -14,6 +14,7 @@
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use Symfony\Component\DependencyInjection\Alias;
1515
use Symfony\Component\DependencyInjection\Argument\ClosureProxyArgument;
1616
use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
17+
use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
1718
use Symfony\Component\DependencyInjection\ChildDefinition;
1819
use Symfony\Component\DependencyInjection\ContainerInterface;
1920
use Symfony\Component\DependencyInjection\Definition;
@@ -616,6 +617,13 @@ private function resolveServices($value)
616617

617618
return new IteratorArgument(array_map(array($this, 'resolveServices'), $argument));
618619
}
620+
if ('service_locator' === $value->getTag()) {
621+
if (!is_array($argument)) {
622+
throw new InvalidArgumentException('"!service_locator" tag only accepts mappings.');
623+
}
624+
625+
return new ServiceLocatorArgument(array_map(array($this, 'resolveServices'), $argument));
626+
}
619627
if ('closure_proxy' === $value->getTag()) {
620628
if (!is_array($argument) || array(0, 1) !== array_keys($argument) || !is_string($argument[0]) || !is_string($argument[1]) || 0 !== strpos($argument[0], '@') || 0 === strpos($argument[0], '@@')) {
621629
throw new InvalidArgumentException('"!closure_proxy" tagged values must be arrays of [@service, method].');

‎src/Symfony/Component/DependencyInjection/Loader/schema/dic/services/services-1.0.xsd

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Loader/schema/dic/services/services-1.0.xsd
+1Lines changed: 1 addition & 0 deletions
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@@ -246,6 +246,7 @@
246246
<xsd:enumeration value="string" />
247247
<xsd:enumeration value="constant" />
248248
<xsd:enumeration value="iterator" />
249+
<xsd:enumeration value="service-locator" />
249250
<xsd:enumeration value="closure-proxy" />
250251
</xsd:restriction>
251252
</xsd:simpleType>

‎src/Symfony/Component/DependencyInjection/ServiceLocator.php

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+71Lines changed: 71 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,71 @@
1+
<?php
2+
3+
/*
4+
* This file is part of the Symfony package.
5+
*
6+
* (c) Fabien Potencier <fabien@symfony.com>
7+
*
8+
* For the full copyright and license information, please view the LICENSE
9+
* file that was distributed with this source code.
10+
*/
11+
12+
namespace Symfony\Component\DependencyInjection;
13+
14+
use Psr\Container\ContainerInterface as PsrContainerInterface;
15+
use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
16+
use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
17+
18+
/**
19+
* @author Robin Chalas <robin.chalas@gmail.com>
20+
* @author Nicolas Grekas <p@tchwork.com>
21+
*
22+
* @experimental in version 3.3
23+
*/
24+
class ServiceLocator implements PsrContainerInterface
25+
{
26+
private $factories;
27+
private $values = array();
28+
29+
/**
30+
* @param callable[] $factories
31+
*/
32+
public function __construct(array $factories)
33+
{
34+
$this->factories = $factories;
35+
}
36+
37+
/**
38+
* {@inheritdoc}
39+
*/
40+
public function has($id)
41+
{
42+
return isset($this->factories[$id]);
43+
}
44+
45+
/**
46+
* {@inheritdoc}
47+
*/
48+
public function get($id)
49+
{
50+
if (!isset($this->factories[$id])) {
51+
throw new ServiceNotFoundException($id, null, null, array_keys($this->factories));
52+
}
53+
54+
if (true === $factory = $this->factories[$id]) {
55+
throw new ServiceCircularReferenceException($id, array($id, $id));
56+
}
57+
58+
if (false !== $factory) {
59+
$this->factories[$id] = true;
60+
$this->values[$id] = $factory();
61+
$this->factories[$id] = false;
62+
}
63+
64+
return $this->values[$id];
65+
}
66+
67+
public function __invoke($id)
68+
{
69+
return isset($this->factories[$id]) ? $this->get($id) : null;
70+
}
71+
}

‎src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
+22Lines changed: 22 additions & 0 deletions
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@@ -21,6 +21,7 @@
2121
use Symfony\Component\DependencyInjection\Argument\ClosureProxyArgument;
2222
use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
2323
use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
24+
use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
2425
use Symfony\Component\DependencyInjection\ChildDefinition;
2526
use Symfony\Component\DependencyInjection\Compiler\PassConfig;
2627
use Symfony\Component\DependencyInjection\ContainerBuilder;
@@ -33,6 +34,7 @@
3334
use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
3435
use Symfony\Component\DependencyInjection\ParameterBag\EnvPlaceholderParameterBag;
3536
use Symfony\Component\Config\Resource\FileResource;
37+
use Symfony\Component\DependencyInjection\ServiceLocator;
3638
use Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition;
3739
use Symfony\Component\DependencyInjection\Tests\Fixtures\CaseSensitiveClass;
3840
use Symfony\Component\ExpressionLanguage\Expression;
@@ -437,6 +439,26 @@ public function testCreateServiceWithIteratorArgument()
437439
$this->assertEquals(1, $i);
438440
}
439441

442+
public function testCreateServiceWithServiceLocatorArgument()
443+
{
444+
$builder = new ContainerBuilder();
445+
$builder->register('bar', 'stdClass');
446+
$builder
447+
->register('lazy_context', 'LazyContext')
448+
->setArguments(array(new ServiceLocatorArgument(array('bar' => new Reference('bar'), 'invalid' => new Reference('invalid', ContainerInterface::IGNORE_ON_INVALID_REFERENCE), 'foo_string' => 'foo', 'foo_collection' => array('foo')))))
449+
;
450+
451+
$lazyContext = $builder->get('lazy_context');
452+
$locator = $lazyContext->lazyValues;
453+
454+
$this->assertInstanceOf(ServiceLocator::class, $locator);
455+
$this->assertInstanceOf('stdClass', $locator->get('bar'));
456+
$this->assertSame('foo', $locator->get('foo_string'));
457+
$this->assertSame(array('foo'), $locator->get('foo_collection'));
458+
$this->assertNull($locator->get('invalid'));
459+
$this->assertSame($locator->get('bar'), $locator('bar'), '->get() should be used when invoking ServiceLocator');
460+
}
461+
440462
/**
441463
* @expectedException \RuntimeException
442464
*/

‎src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
+32Lines changed: 32 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -17,11 +17,14 @@
1717
use Symfony\Component\DependencyInjection\ContainerBuilder;
1818
use Symfony\Component\DependencyInjection\Dumper\PhpDumper;
1919
use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
20+
use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
2021
use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
2122
use Symfony\Component\DependencyInjection\Reference;
2223
use Symfony\Component\DependencyInjection\Definition;
2324
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
25+
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
2426
use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
27+
use Symfony\Component\DependencyInjection\ServiceLocator;
2528
use Symfony\Component\DependencyInjection\Variable;
2629
use Symfony\Component\ExpressionLanguage\Expression;
2730

@@ -503,6 +506,35 @@ public function testCircularReferenceAllowanceForInlinedDefinitionsForLazyServic
503506
$dumper->dump();
504507
}
505508

509+
public function testServiceLocatorArgumentProvideServiceLocator()
510+
{
511+
require_once self::$fixturesPath.'/includes/classes.php';
512+
513+
$container = new ContainerBuilder();
514+
$container->register('lazy_referenced', 'stdClass');
515+
$container
516+
->register('lazy_context', 'LazyContext')
517+
->setArguments(array(new ServiceLocatorArgument(array('lazy1' => new Reference('lazy_referenced'), 'lazy2' => new Reference('lazy_referenced'), 'container' => new Reference('service_container')))))
518+
;
519+
$container->compile();
520+
521+
$dumper = new PhpDumper($container);
522+
$dump = $dumper->dump(array('class' => 'Symfony_DI_PhpDumper_Test_Locator_Argument_Provide_Service_Locator'));
523+
$this->assertStringEqualsFile(self::$fixturesPath.'/php/services_locator_argument.php', $dump);
524+
525+
require_once(self::$fixturesPath.'/php/services_locator_argument.php');
526+
527+
$container = new \Symfony_DI_PhpDumper_Test_Locator_Argument_Provide_Service_Locator();
528+
$lazyContext = $container->get('lazy_context');
529+
530+
$this->assertInstanceOf(ServiceLocator::class, $lazyContext->lazyValues);
531+
$this->assertSame($container, $lazyContext->lazyValues->get('container'));
532+
$this->assertInstanceOf('stdClass', $lazy1 = $lazyContext->lazyValues->get('lazy1'));
533+
$this->assertInstanceOf('stdClass', $lazy2 = $lazyContext->lazyValues->get('lazy2'));
534+
$this->assertSame($lazy1, $lazy2);
535+
$this->assertFalse($lazyContext->lazyValues->has('lazy_referenced'), '->has() returns false for the original service id, only the key can be used');
536+
}
537+
506538
public function testLazyArgumentProvideGenerator()
507539
{
508540
require_once self::$fixturesPath.'/includes/classes.php';

‎src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1-1.php

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+1Lines changed: 1 addition & 0 deletions
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@@ -7,6 +7,7 @@
77
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
88
use Symfony\Component\DependencyInjection\Exception\LogicException;
99
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
10+
use Symfony\Component\DependencyInjection\ServiceLocator;
1011
use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
1112

1213
/**

‎src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services1.php
+1Lines changed: 1 addition & 0 deletions
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@@ -6,6 +6,7 @@
66
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
77
use Symfony\Component\DependencyInjection\Exception\LogicException;
88
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
9+
use Symfony\Component\DependencyInjection\ServiceLocator;
910
use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
1011

1112
/**

‎src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services10.php
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@@ -6,6 +6,7 @@
66
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
77
use Symfony\Component\DependencyInjection\Exception\LogicException;
88
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
9+
use Symfony\Component\DependencyInjection\ServiceLocator;
910
use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
1011

1112
/**

‎src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services12.php
+1Lines changed: 1 addition & 0 deletions
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@@ -6,6 +6,7 @@
66
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
77
use Symfony\Component\DependencyInjection\Exception\LogicException;
88
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
9+
use Symfony\Component\DependencyInjection\ServiceLocator;
910
use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
1011

1112
/**

‎src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php

Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services13.php
+1Lines changed: 1 addition & 0 deletions
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@@ -6,6 +6,7 @@
66
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
77
use Symfony\Component\DependencyInjection\Exception\LogicException;
88
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
9+
use Symfony\Component\DependencyInjection\ServiceLocator;
910
use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
1011

1112
/**

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