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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\DependencyInjection\Dumper;
use Symfony\Component\DependencyInjection\Variable;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Container;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\DependencyInjection\Parameter;
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
use Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException;
use Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\DumperInterface as ProxyDumper;
use Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\NullDumper;
use Symfony\Component\DependencyInjection\ExpressionLanguage;
use Symfony\Component\ExpressionLanguage\Expression;
/**
* PhpDumper dumps a service container as a PHP class.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*
* @api
*/
class PhpDumper extends Dumper
{
/**
* Characters that might appear in the generated variable name as first character
* @var string
*/
const FIRST_CHARS = 'abcdefghijklmnopqrstuvwxyz';
/**
* Characters that might appear in the generated variable name as any but the first character
* @var string
*/
const NON_FIRST_CHARS = 'abcdefghijklmnopqrstuvwxyz0123456789_';
private $inlinedDefinitions;
private $definitionVariables;
private $referenceVariables;
private $variableCount;
private $reservedVariables = array('instance', 'class');
private $expressionLanguage;
/**
* @var \Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\DumperInterface
*/
private $proxyDumper;
/**
* {@inheritDoc}
*
* @api
*/
public function __construct(ContainerBuilder $container)
{
parent::__construct($container);
$this->inlinedDefinitions = new \SplObjectStorage();
}
/**
* Sets the dumper to be used when dumping proxies in the generated container.
*
* @param ProxyDumper $proxyDumper
*/
public function setProxyDumper(ProxyDumper $proxyDumper)
{
$this->proxyDumper = $proxyDumper;
}
/**
* Dumps the service container as a PHP class.
*
* Available options:
*
* * class: The class name
* * base_class: The base class name
* * namespace: The class namespace
*
* @param array $options An array of options
*
* @return string A PHP class representing of the service container
*
* @api
*/
public function dump(array $options = array())
{
$options = array_merge(array(
'class' => 'ProjectServiceContainer',
'base_class' => 'Container',
'namespace' => '',
), $options);
$code = $this->startClass($options['class'], $options['base_class'], $options['namespace']);
if ($this->container->isFrozen()) {
$code .= $this->addFrozenConstructor();
} else {
$code .= $this->addConstructor();
}
$code .=
$this->addServices().
$this->addDefaultParametersMethod().
$this->endClass().
$this->addProxyClasses()
;
return $code;
}
/**
* Retrieves the currently set proxy dumper or instantiates one.
*
* @return ProxyDumper
*/
private function getProxyDumper()
{
if (!$this->proxyDumper) {
$this->proxyDumper = new NullDumper();
}
return $this->proxyDumper;
}
/**
* Generates Service local temp variables.
*
* @param string $cId
* @param string $definition
*
* @return string
*/
private function addServiceLocalTempVariables($cId, $definition)
{
static $template = " \$%s = %s;\n";
$localDefinitions = array_merge(
array($definition),
$this->getInlinedDefinitions($definition)
);
$calls = $behavior = array();
foreach ($localDefinitions as $iDefinition) {
$this->getServiceCallsFromArguments($iDefinition->getArguments(), $calls, $behavior);
$this->getServiceCallsFromArguments($iDefinition->getMethodCalls(), $calls, $behavior);
$this->getServiceCallsFromArguments($iDefinition->getProperties(), $calls, $behavior);
}
$code = '';
foreach ($calls as $id => $callCount) {
if ('service_container' === $id || $id === $cId) {
continue;
}
if ($callCount > 1) {
$name = $this->getNextVariableName();
$this->referenceVariables[$id] = new Variable($name);
if (ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE === $behavior[$id]) {
$code .= sprintf($template, $name, $this->getServiceCall($id));
} else {
$code .= sprintf($template, $name, $this->getServiceCall($id, new Reference($id, ContainerInterface::NULL_ON_INVALID_REFERENCE)));
}
}
}
if ('' !== $code) {
$code .= "\n";
}
return $code;
}
/**
* Generates code for the proxies to be attached after the container class
*
* @return string
*/
private function addProxyClasses()
{
/* @var $definitions Definition[] */
$definitions = array_filter(
$this->container->getDefinitions(),
array($this->getProxyDumper(), 'isProxyCandidate')
);
$code = '';
foreach ($definitions as $definition) {
$code .= "\n" . $this->getProxyDumper()->getProxyCode($definition);
}
return $code;
}
/**
* Generates the require_once statement for service includes.
*
* @param string $id The service id
* @param Definition $definition
*
* @return string
*/
private function addServiceInclude($id, $definition)
{
$template = " require_once %s;\n";
$code = '';
if (null !== $file = $definition->getFile()) {
$code .= sprintf($template, $this->dumpValue($file));
}
foreach ($this->getInlinedDefinitions($definition) as $definition) {
if (null !== $file = $definition->getFile()) {
$code .= sprintf($template, $this->dumpValue($file));
}
}
if ('' !== $code) {
$code .= "\n";
}
return $code;
}
/**
* Generates the inline definition of a service.
*
* @param string $id
* @param Definition $definition
*
* @return string
*
* @throws RuntimeException When the factory definition is incomplete
* @throws ServiceCircularReferenceException When a circular reference is detected
*/
private function addServiceInlinedDefinitions($id, $definition)
{
$code = '';
$variableMap = $this->definitionVariables;
$nbOccurrences = new \SplObjectStorage();
$processed = new \SplObjectStorage();
$inlinedDefinitions = $this->getInlinedDefinitions($definition);
foreach ($inlinedDefinitions as $definition) {
if (false === $nbOccurrences->contains($definition)) {
$nbOccurrences->offsetSet($definition, 1);
} else {
$i = $nbOccurrences->offsetGet($definition);
$nbOccurrences->offsetSet($definition, $i + 1);
}
}
foreach ($inlinedDefinitions as $sDefinition) {
if ($processed->contains($sDefinition)) {
continue;
}
$processed->offsetSet($sDefinition);
$class = $this->dumpValue($sDefinition->getClass());
if ($nbOccurrences->offsetGet($sDefinition) > 1 || $sDefinition->getMethodCalls() || $sDefinition->getProperties() || null !== $sDefinition->getConfigurator() || false !== strpos($class, '$')) {
$name = $this->getNextVariableName();
$variableMap->offsetSet($sDefinition, new Variable($name));
// a construct like:
// $a = new ServiceA(ServiceB $b); $b = new ServiceB(ServiceA $a);
// this is an indication for a wrong implementation, you can circumvent this problem
// by setting up your service structure like this:
// $b = new ServiceB();
// $a = new ServiceA(ServiceB $b);
// $b->setServiceA(ServiceA $a);
if ($this->hasReference($id, $sDefinition->getArguments())) {
throw new ServiceCircularReferenceException($id, array($id));
}
$code .= $this->addNewInstance($id, $sDefinition, '$'.$name, ' = ');
if (!$this->hasReference($id, $sDefinition->getMethodCalls(), true) && !$this->hasReference($id, $sDefinition->getProperties(), true)) {
$code .= $this->addServiceMethodCalls(null, $sDefinition, $name);
$code .= $this->addServiceProperties(null, $sDefinition, $name);
$code .= $this->addServiceConfigurator(null, $sDefinition, $name);
}
$code .= "\n";
}
}
return $code;
}
/**
* Adds the service return statement.
*
* @param string $id Service id
* @param Definition $definition
*
* @return string
*/
private function addServiceReturn($id, $definition)
{
if ($this->isSimpleInstance($id, $definition)) {
return " }\n";
}
return "\n return \$instance;\n }\n";
}
/**
* Generates the service instance.
*
* @param string $id
* @param Definition $definition
*
* @return string
*
* @throws InvalidArgumentException
* @throws RuntimeException
*/
private function addServiceInstance($id, $definition)
{
$class = $this->dumpValue($definition->getClass());
if (0 === strpos($class, "'") && !preg_match('/^\'[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*(\\\{2}[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)*\'$/', $class)) {
throw new InvalidArgumentException(sprintf('"%s" is not a valid class name for the "%s" service.', $class, $id));
}
$simple = $this->isSimpleInstance($id, $definition);
$isProxyCandidate = $this->getProxyDumper()->isProxyCandidate($definition);
$instantiation = '';
if (!$isProxyCandidate && ContainerInterface::SCOPE_CONTAINER === $definition->getScope()) {
$instantiation = "\$this->services['$id'] = ".($simple ? '' : '$instance');
} elseif (!$isProxyCandidate && ContainerInterface::SCOPE_PROTOTYPE !== $scope = $definition->getScope()) {
$instantiation = "\$this->services['$id'] = \$this->scopedServices['$scope']['$id'] = ".($simple ? '' : '$instance');
} elseif (!$simple) {
$instantiation = '$instance';
}
$return = '';
if ($simple) {
$return = 'return ';
} else {
$instantiation .= ' = ';
}
$code = $this->addNewInstance($id, $definition, $return, $instantiation);
if (!$simple) {
$code .= "\n";
}
return $code;
}
/**
* Checks if the definition is a simple instance.
*
* @param string $id
* @param Definition $definition
*
* @return Boolean
*/
private function isSimpleInstance($id, $definition)
{
foreach (array_merge(array($definition), $this->getInlinedDefinitions($definition)) as $sDefinition) {
if ($definition !== $sDefinition && !$this->hasReference($id, $sDefinition->getMethodCalls())) {
continue;
}
if ($sDefinition->getMethodCalls() || $sDefinition->getProperties() || $sDefinition->getConfigurator()) {
return false;
}
}
return true;
}
/**
* Adds method calls to a service definition.
*
* @param string $id
* @param Definition $definition
* @param string $variableName
*
* @return string
*/
private function addServiceMethodCalls($id, $definition, $variableName = 'instance')
{
$calls = '';
foreach ($definition->getMethodCalls() as $call) {
$arguments = array();
foreach ($call[1] as $value) {
$arguments[] = $this->dumpValue($value);
}
$calls .= $this->wrapServiceConditionals($call[1], sprintf(" \$%s->%s(%s);\n", $variableName, $call[0], implode(', ', $arguments)));
}
return $calls;
}
private function addServiceProperties($id, $definition, $variableName = 'instance')
{
$code = '';
foreach ($definition->getProperties() as $name => $value) {
$code .= sprintf(" \$%s->%s = %s;\n", $variableName, $name, $this->dumpValue($value));
}
return $code;
}
/**
* Generates the inline definition setup.
*
* @param string $id
* @param Definition $definition
* @return string
*/
private function addServiceInlinedDefinitionsSetup($id, $definition)
{
$this->referenceVariables[$id] = new Variable('instance');
$code = '';
$processed = new \SplObjectStorage();
foreach ($this->getInlinedDefinitions($definition) as $iDefinition) {
if ($processed->contains($iDefinition)) {
continue;
}
$processed->offsetSet($iDefinition);
if (!$this->hasReference($id, $iDefinition->getMethodCalls(), true) && !$this->hasReference($id, $iDefinition->getProperties(), true)) {
continue;
}
// if the instance is simple, the return statement has already been generated
// so, the only possible way to get there is because of a circular reference
if ($this->isSimpleInstance($id, $definition)) {
throw new ServiceCircularReferenceException($id, array($id));
}
$name = (string) $this->definitionVariables->offsetGet($iDefinition);
$code .= $this->addServiceMethodCalls(null, $iDefinition, $name);
$code .= $this->addServiceProperties(null, $iDefinition, $name);
$code .= $this->addServiceConfigurator(null, $iDefinition, $name);
}
if ('' !== $code) {
$code .= "\n";
}
return $code;
}
/**
* Adds configurator definition
*
* @param string $id
* @param Definition $definition
* @param string $variableName
*
* @return string
*/
private function addServiceConfigurator($id, $definition, $variableName = 'instance')
{
if (!$callable = $definition->getConfigurator()) {
return '';
}
if (is_array($callable)) {
if ($callable[0] instanceof Reference) {
return sprintf(" %s->%s(\$%s);\n", $this->getServiceCall((string) $callable[0]), $callable[1], $variableName);
}
return sprintf(" call_user_func(array(%s, '%s'), \$%s);\n", $this->dumpValue($callable[0]), $callable[1], $variableName);
}
return sprintf(" %s(\$%s);\n", $callable, $variableName);
}
/**
* Adds a service
*
* @param string $id
* @param Definition $definition
*
* @return string
*/
private function addService($id, $definition)
{
$this->definitionVariables = new \SplObjectStorage();
$this->referenceVariables = array();
$this->variableCount = 0;
$return = array();
if ($definition->isSynthetic()) {
$return[] = '@throws RuntimeException always since this service is expected to be injected dynamically';
} elseif ($class = $definition->getClass()) {
$return[] = sprintf("@return %s A %s instance.", 0 === strpos($class, '%') ? 'object' : $class, $class);
} elseif ($definition->getFactoryClass()) {
$return[] = sprintf('@return object An instance returned by %s::%s().', $definition->getFactoryClass(), $definition->getFactoryMethod());
} elseif ($definition->getFactoryService()) {
$return[] = sprintf('@return object An instance returned by %s::%s().', $definition->getFactoryService(), $definition->getFactoryMethod());
}
$scope = $definition->getScope();
if (!in_array($scope, array(ContainerInterface::SCOPE_CONTAINER, ContainerInterface::SCOPE_PROTOTYPE))) {
if ($return && 0 === strpos($return[count($return) - 1], '@return')) {
$return[] = '';
}
$return[] = sprintf("@throws InactiveScopeException when the '%s' service is requested while the '%s' scope is not active", $id, $scope);
}
$return = implode("\n * ", $return);
$doc = '';
if (ContainerInterface::SCOPE_PROTOTYPE !== $scope) {
$doc .= <<<EOF
*
* This service is shared.
* This method always returns the same instance of the service.
EOF;
}
if (!$definition->isPublic()) {
$doc .= <<<EOF
*
* This service is private.
* If you want to be able to request this service from the container directly,
* make it public, otherwise you might end up with broken code.
EOF;
}
if ($definition->isLazy()) {
$lazyInitialization = '$lazyLoad = true';
$lazyInitializationDoc = "\n * @param boolean \$lazyLoad whether to try lazy-loading the service with a proxy\n *";
} else {
$lazyInitialization = '';
$lazyInitializationDoc = '';
}
// with proxies, for 5.3.3 compatibility, the getter must be public to be accessible to the initializer
$isProxyCandidate = $this->getProxyDumper()->isProxyCandidate($definition);
$visibility = $isProxyCandidate ? 'public' : 'protected';
$code = <<<EOF
/**
* Gets the '$id' service.$doc
*$lazyInitializationDoc
* $return
*/
{$visibility} function get{$this->camelize($id)}Service($lazyInitialization)
{
EOF;
$code .= $isProxyCandidate ? $this->getProxyDumper()->getProxyFactoryCode($definition, $id) : '';
if (!in_array($scope, array(ContainerInterface::SCOPE_CONTAINER, ContainerInterface::SCOPE_PROTOTYPE))) {
$code .= <<<EOF
if (!isset(\$this->scopedServices['$scope'])) {
throw new InactiveScopeException('$id', '$scope');
}
EOF;
}
if ($definition->isSynthetic()) {
$code .= sprintf(" throw new RuntimeException('You have requested a synthetic service (\"%s\"). The DIC does not know how to construct this service.');\n }\n", $id);
} else {
$code .=
$this->addServiceInclude($id, $definition).
$this->addServiceLocalTempVariables($id, $definition).
$this->addServiceInlinedDefinitions($id, $definition).
$this->addServiceInstance($id, $definition).
$this->addServiceInlinedDefinitionsSetup($id, $definition).
$this->addServiceMethodCalls($id, $definition).
$this->addServiceProperties($id, $definition).
$this->addServiceConfigurator($id, $definition).
$this->addServiceReturn($id, $definition)
;
}
$this->definitionVariables = null;
$this->referenceVariables = null;
return $code;
}
/**
* Adds multiple services
*
* @return string
*/
private function addServices()
{
$publicServices = $privateServices = $synchronizers = '';
$definitions = $this->container->getDefinitions();
ksort($definitions);
foreach ($definitions as $id => $definition) {
if ($definition->isPublic()) {
$publicServices .= $this->addService($id, $definition);
} else {
$privateServices .= $this->addService($id, $definition);
}
$synchronizers .= $this->addServiceSynchronizer($id, $definition);
}
return $publicServices.$synchronizers.$privateServices;
}
/**
* Adds synchronizer methods.
*
* @param string $id A service identifier
* @param Definition $definition A Definition instance
*/
private function addServiceSynchronizer($id, Definition $definition)
{
if (!$definition->isSynchronized()) {
return;
}
$code = '';
foreach ($this->container->getDefinitions() as $definitionId => $definition) {
foreach ($definition->getMethodCalls() as $call) {
foreach ($call[1] as $argument) {
if ($argument instanceof Reference && $id == (string) $argument) {
$arguments = array();
foreach ($call[1] as $value) {
$arguments[] = $this->dumpValue($value);
}
$call = $this->wrapServiceConditionals($call[1], sprintf("\$this->get('%s')->%s(%s);", $definitionId, $call[0], implode(', ', $arguments)));
$code .= <<<EOF
if (\$this->initialized('$definitionId')) {
$call
}
EOF;
}
}
}
}
if (!$code) {
return;
}
return <<<EOF
/**
* Updates the '$id' service.
*/
protected function synchronize{$this->camelize($id)}Service()
{
$code }
EOF;
}
private function addNewInstance($id, Definition $definition, $return, $instantiation)
{
$class = $this->dumpValue($definition->getClass());
$arguments = array();
foreach ($definition->getArguments() as $value) {
$arguments[] = $this->dumpValue($value);
}
if (null !== $definition->getFactoryMethod()) {
if (null !== $definition->getFactoryClass()) {
return sprintf(" $return{$instantiation}call_user_func(array(%s, '%s')%s);\n", $this->dumpValue($definition->getFactoryClass()), $definition->getFactoryMethod(), $arguments ? ', '.implode(', ', $arguments) : '');
}
if (null !== $definition->getFactoryService()) {
return sprintf(" $return{$instantiation}%s->%s(%s);\n", $this->getServiceCall($definition->getFactoryService()), $definition->getFactoryMethod(), implode(', ', $arguments));
}
throw new RuntimeException(sprintf('Factory method requires a factory service or factory class in service definition for %s', $id));
}
if (false !== strpos($class, '$')) {
return sprintf(" \$class = %s;\n\n $return{$instantiation}new \$class(%s);\n", $class, implode(', ', $arguments));
}
return sprintf(" $return{$instantiation}new \\%s(%s);\n", substr(str_replace('\\\\', '\\', $class), 1, -1), implode(', ', $arguments));
}
/**
* Adds the class headers.
*
* @param string $class Class name
* @param string $baseClass The name of the base class
* @param string $namespace The class namespace
*
* @return string
*/
private function startClass($class, $baseClass, $namespace)
{
$bagClass = $this->container->isFrozen() ? 'use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;' : 'use Symfony\Component\DependencyInjection\ParameterBag\\ParameterBag;';
$namespaceLine = $namespace ? "namespace $namespace;\n" : '';
return <<<EOF
<?php
$namespaceLine
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\Container;
use Symfony\Component\DependencyInjection\Exception\InactiveScopeException;
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
use Symfony\Component\DependencyInjection\Exception\LogicException;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
$bagClass
/**
* $class
*
* This class has been auto-generated
* by the Symfony Dependency Injection Component.
*/
class $class extends $baseClass
{
EOF;
}
/**
* Adds the constructor.
*
* @return string
*/
private function addConstructor()
{
$arguments = $this->container->getParameterBag()->all() ? 'new ParameterBag($this->getDefaultParameters())' : null;
$code = <<<EOF
/**
* Constructor.
*/
public function __construct()
{
parent::__construct($arguments);
EOF;
if (count($scopes = $this->container->getScopes()) > 0) {
$code .= "\n";
$code .= " \$this->scopes = ".$this->dumpValue($scopes).";\n";
$code .= " \$this->scopeChildren = ".$this->dumpValue($this->container->getScopeChildren()).";\n";
}
$code .= $this->addMethodMap();
$code .= $this->addAliases();
$code .= <<<EOF
}
EOF;
return $code;
}
/**
* Adds the constructor for a frozen container.
*
* @return string
*/
private function addFrozenConstructor()
{
$code = <<<EOF
/**
* Constructor.
*/
public function __construct()
{
EOF;
if ($this->container->getParameterBag()->all()) {
$code .= "\n \$this->parameters = \$this->getDefaultParameters();\n";
}
$code .= <<<EOF
\$this->services =
\$this->scopedServices =
\$this->scopeStacks = array();
\$this->set('service_container', \$this);
EOF;
$code .= "\n";
if (count($scopes = $this->container->getScopes()) > 0) {
$code .= " \$this->scopes = ".$this->dumpValue($scopes).";\n";
$code .= " \$this->scopeChildren = ".$this->dumpValue($this->container->getScopeChildren()).";\n";
} else {
$code .= " \$this->scopes = array();\n";
$code .= " \$this->scopeChildren = array();\n";
}
$code .= $this->addMethodMap();
$code .= $this->addAliases();
$code .= <<<EOF
}
EOF;
return $code;
}
/**
* Adds the methodMap property definition
*
* @return string
*/
private function addMethodMap()
{
if (!$definitions = $this->container->getDefinitions()) {
return '';
}
$code = " \$this->methodMap = array(\n";
ksort($definitions);
foreach ($definitions as $id => $definition) {
$code .= ' '.var_export($id, true).' => '.var_export('get'.$this->camelize($id).'Service', true).",\n";
}
return $code . " );\n";
}
/**
* Adds the aliases property definition
*
* @return string
*/
private function addAliases()
{
if (!$aliases = $this->container->getAliases()) {
if ($this->container->isFrozen()) {
return "\n \$this->aliases = array();\n";
} else {
return '';
}
}
$code = " \$this->aliases = array(\n";
ksort($aliases);
foreach ($aliases as $alias => $id) {
$id = (string) $id;
while (isset($aliases[$id])) {
$id = (string) $aliases[$id];
}
$code .= ' '.var_export($alias, true).' => '.var_export($id, true).",\n";
}
return $code . " );\n";
}
/**
* Adds default parameters method.
*
* @return string
*/
private function addDefaultParametersMethod()
{
if (!$this->container->getParameterBag()->all()) {
return '';
}
$parameters = $this->exportParameters($this->container->getParameterBag()->all());
$code = '';
if ($this->container->isFrozen()) {
$code .= <<<EOF
/**
* {@inheritdoc}
*/
public function getParameter(\$name)
{
\$name = strtolower(\$name);
if (!(isset(\$this->parameters[\$name]) || array_key_exists(\$name, \$this->parameters))) {
throw new InvalidArgumentException(sprintf('The parameter "%s" must be defined.', \$name));
}
return \$this->parameters[\$name];
}
/**
* {@inheritdoc}
*/
public function hasParameter(\$name)
{
\$name = strtolower(\$name);
return isset(\$this->parameters[\$name]) || array_key_exists(\$name, \$this->parameters);
}
/**
* {@inheritdoc}
*/
public function setParameter(\$name, \$value)
{
throw new LogicException('Impossible to call set() on a frozen ParameterBag.');
}
/**
* {@inheritDoc}
*/
public function getParameterBag()
{
if (null === \$this->parameterBag) {
\$this->parameterBag = new FrozenParameterBag(\$this->parameters);
}
return \$this->parameterBag;
}
EOF;
}
$code .= <<<EOF
/**
* Gets the default parameters.
*
* @return array An array of the default parameters
*/
protected function getDefaultParameters()
{
return $parameters;
}
EOF;
return $code;
}
/**
* Exports parameters.
*
* @param array $parameters
* @param string $path
* @param integer $indent
*
* @return string
*
* @throws InvalidArgumentException
*/
private function exportParameters($parameters, $path = '', $indent = 12)
{
$php = array();
foreach ($parameters as $key => $value) {
if (is_array($value)) {
$value = $this->exportParameters($value, $path.'/'.$key, $indent + 4);
} elseif ($value instanceof Variable) {
throw new InvalidArgumentException(sprintf('You cannot dump a container with parameters that contain variable references. Variable "%s" found in "%s".', $value, $path.'/'.$key));
} elseif ($value instanceof Definition) {
throw new InvalidArgumentException(sprintf('You cannot dump a container with parameters that contain service definitions. Definition for "%s" found in "%s".', $value->getClass(), $path.'/'.$key));
} elseif ($value instanceof Reference) {
throw new InvalidArgumentException(sprintf('You cannot dump a container with parameters that contain references to other services (reference to service "%s" found in "%s").', $value, $path.'/'.$key));
} elseif ($value instanceof Expression) {
throw new InvalidArgumentException(sprintf('You cannot dump a container with parameters that contain expressions. Expression "%s" found in "%s".', $value, $path.'/'.$key));
} else {
$value = var_export($value, true);
}
$php[] = sprintf('%s%s => %s,', str_repeat(' ', $indent), var_export($key, true), $value);
}
return sprintf("array(\n%s\n%s)", implode("\n", $php), str_repeat(' ', $indent - 4));
}
/**
* Ends the class definition.
*
* @return string
*/
private function endClass()
{
return <<<EOF
}
EOF;
}
/**
* Wraps the service conditionals.
*
* @param string $value
* @param string $code
*
* @return string
*/
private function wrapServiceConditionals($value, $code)
{
if (!$services = ContainerBuilder::getServiceConditionals($value)) {
return $code;
}
$conditions = array();
foreach ($services as $service) {
$conditions[] = sprintf("\$this->has('%s')", $service);
}
// re-indent the wrapped code
$code = implode("\n", array_map(function ($line) { return $line ? ' '.$line : $line; }, explode("\n", $code)));
return sprintf(" if (%s) {\n%s }\n", implode(' && ', $conditions), $code);
}
/**
* Builds service calls from arguments.
*
* @param array $arguments
* @param array &$calls By reference
* @param array &$behavior By reference
*/
private function getServiceCallsFromArguments(array $arguments, array &$calls, array &$behavior)
{
foreach ($arguments as $argument) {
if (is_array($argument)) {
$this->getServiceCallsFromArguments($argument, $calls, $behavior);
} elseif ($argument instanceof Reference) {
$id = (string) $argument;
if (!isset($calls[$id])) {
$calls[$id] = 0;
}
if (!isset($behavior[$id])) {
$behavior[$id] = $argument->getInvalidBehavior();
} elseif (ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE !== $behavior[$id]) {
$behavior[$id] = $argument->getInvalidBehavior();
}
$calls[$id] += 1;
}
}
}
/**
* Returns the inline definition.
*
* @param Definition $definition
*
* @return array
*/
private function getInlinedDefinitions(Definition $definition)
{
if (false === $this->inlinedDefinitions->contains($definition)) {
$definitions = array_merge(
$this->getDefinitionsFromArguments($definition->getArguments()),
$this->getDefinitionsFromArguments($definition->getMethodCalls()),
$this->getDefinitionsFromArguments($definition->getProperties())
);
$this->inlinedDefinitions->offsetSet($definition, $definitions);
return $definitions;
}
return $this->inlinedDefinitions->offsetGet($definition);
}
/**
* Gets the definition from arguments.
*
* @param array $arguments
*
* @return array
*/
private function getDefinitionsFromArguments(array $arguments)
{
$definitions = array();
foreach ($arguments as $argument) {
if (is_array($argument)) {
$definitions = array_merge($definitions, $this->getDefinitionsFromArguments($argument));
} elseif ($argument instanceof Definition) {
$definitions = array_merge(
$definitions,
$this->getInlinedDefinitions($argument),
array($argument)
);
}
}
return $definitions;
}
/**
* Checks if a service id has a reference.
*
* @param string $id
* @param array $arguments
* @param Boolean $deep
* @param array $visited
*
* @return Boolean
*/
private function hasReference($id, array $arguments, $deep = false, array $visited = array())
{
foreach ($arguments as $argument) {
if (is_array($argument)) {
if ($this->hasReference($id, $argument, $deep, $visited)) {
return true;
}
} elseif ($argument instanceof Reference) {
$argumentId = (string) $argument;
if ($id === $argumentId) {
return true;
}
if ($deep && !isset($visited[$argumentId])) {
$visited[$argumentId] = true;
$service = $this->container->getDefinition($argumentId);
$arguments = array_merge($service->getMethodCalls(), $service->getArguments(), $service->getProperties());
if ($this->hasReference($id, $arguments, $deep, $visited)) {
return true;
}
}
}
}
return false;
}
/**
* Dumps values.
*
* @param array $value
* @param Boolean $interpolate
*
* @return string
*
* @throws RuntimeException
*/
private function dumpValue($value, $interpolate = true)
{
if (is_array($value)) {
$code = array();
foreach ($value as $k => $v) {
$code[] = sprintf('%s => %s', $this->dumpValue($k, $interpolate), $this->dumpValue($v, $interpolate));
}
return sprintf('array(%s)', implode(', ', $code));
} elseif ($value instanceof Definition) {
if (null !== $this->definitionVariables && $this->definitionVariables->contains($value)) {
return $this->dumpValue($this->definitionVariables->offsetGet($value), $interpolate);
}
if (count($value->getMethodCalls()) > 0) {
throw new RuntimeException('Cannot dump definitions which have method calls.');
}
if (null !== $value->getConfigurator()) {
throw new RuntimeException('Cannot dump definitions which have a configurator.');
}
$arguments = array();
foreach ($value->getArguments() as $argument) {
$arguments[] = $this->dumpValue($argument);
}
$class = $this->dumpValue($value->getClass());
if (false !== strpos($class, '$')) {
throw new RuntimeException('Cannot dump definitions which have a variable class name.');
}
if (null !== $value->getFactoryMethod()) {
if (null !== $value->getFactoryClass()) {
return sprintf("call_user_func(array(%s, '%s')%s)", $this->dumpValue($value->getFactoryClass()), $value->getFactoryMethod(), count($arguments) > 0 ? ', '.implode(', ', $arguments) : '');
} elseif (null !== $value->getFactoryService()) {
return sprintf("%s->%s(%s)", $this->getServiceCall($value->getFactoryService()), $value->getFactoryMethod(), implode(', ', $arguments));
} else {
throw new RuntimeException('Cannot dump definitions which have factory method without factory service or factory class.');
}
}
return sprintf("new \\%s(%s)", substr(str_replace('\\\\', '\\', $class), 1, -1), implode(', ', $arguments));
} elseif ($value instanceof Variable) {
return '$'.$value;
} elseif ($value instanceof Reference) {
if (null !== $this->referenceVariables && isset($this->referenceVariables[$id = (string) $value])) {
return $this->dumpValue($this->referenceVariables[$id], $interpolate);
}
return $this->getServiceCall((string) $value, $value);
} elseif ($value instanceof Expression) {
return $this->getExpressionLanguage()->compile((string) $value, array('container'));
} elseif ($value instanceof Parameter) {
return $this->dumpParameter($value);
} elseif (true === $interpolate && is_string($value)) {
if (preg_match('/^%([^%]+)%$/', $value, $match)) {
// we do this to deal with non string values (Boolean, integer, ...)
// the preg_replace_callback converts them to strings
return $this->dumpParameter(strtolower($match[1]));
} else {
$that = $this;
$replaceParameters = function ($match) use ($that) {
return "'.".$that->dumpParameter(strtolower($match[2])).".'";
};
$code = str_replace('%%', '%', preg_replace_callback('/(?<!%)(%)([^%]+)\1/', $replaceParameters, var_export($value, true)));
return $code;
}
} elseif (is_object($value) || is_resource($value)) {
throw new RuntimeException('Unable to dump a service container if a parameter is an object or a resource.');
} else {
return var_export($value, true);
}
}
/**
* Dumps a parameter
*
* @param string $name
*
* @return string
*/
public function dumpParameter($name)
{
if ($this->container->isFrozen() && $this->container->hasParameter($name)) {
return $this->dumpValue($this->container->getParameter($name), false);
}
return sprintf("\$this->getParameter('%s')", strtolower($name));
}
/**
* Gets a service call
*
* @param string $id
* @param Reference $reference
*
* @return string
*/
private function getServiceCall($id, Reference $reference = null)
{
if ('service_container' === $id) {
return '$this';
}
if (null !== $reference && ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE !== $reference->getInvalidBehavior()) {
return sprintf('$this->get(\'%s\', ContainerInterface::NULL_ON_INVALID_REFERENCE)', $id);
} else {
if ($this->container->hasAlias($id)) {
$id = (string) $this->container->getAlias($id);
}
return sprintf('$this->get(\'%s\')', $id);
}
}
/**
* Convert a service id to a valid PHP method name.
*
* @param string $id
*
* @return string
*
* @throws InvalidArgumentException
*/
private function camelize($id)
{
$name = Container::camelize($id);
if (!preg_match('/^[a-zA-Z0-9_\x7f-\xff]+$/', $name)) {
throw new InvalidArgumentException(sprintf('Service id "%s" cannot be converted to a valid PHP method name.', $id));
}
return $name;
}
/**
* Returns the next name to use
*
* @return string
*/
private function getNextVariableName()
{
$firstChars = self::FIRST_CHARS;
$firstCharsLength = strlen($firstChars);
$nonFirstChars = self::NON_FIRST_CHARS;
$nonFirstCharsLength = strlen($nonFirstChars);
while (true) {
$name = '';
$i = $this->variableCount;
if ('' === $name) {
$name .= $firstChars[$i%$firstCharsLength];
$i = intval($i/$firstCharsLength);
}
while ($i > 0) {
$i -= 1;
$name .= $nonFirstChars[$i%$nonFirstCharsLength];
$i = intval($i/$nonFirstCharsLength);
}
$this->variableCount += 1;
// check that the name is not reserved
if (in_array($name, $this->reservedVariables, true)) {
continue;
}
return $name;
}
}
private function getExpressionLanguage()
{
if (null === $this->expressionLanguage) {
if (!class_exists('Symfony\Component\ExpressionLanguage\ExpressionLanguage')) {
throw new RuntimeException('Unable to use expressions as the Symfony ExpressionLanguage component is not installed.');
}
$this->expressionLanguage = new ExpressionLanguage();
}
return $this->expressionLanguage;
}
}