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<?php
declare(strict_types=1);
namespace DI;
use DI\Definition\ArrayDefinitionExtension;
use DI\Definition\EnvironmentVariableDefinition;
use DI\Definition\Helper\AutowireDefinitionHelper;
use DI\Definition\Helper\CreateDefinitionHelper;
use DI\Definition\Helper\FactoryDefinitionHelper;
use DI\Definition\Reference;
use DI\Definition\StringDefinition;
use DI\Definition\ValueDefinition;
if (! function_exists('DI\value')) {
/**
* Helper for defining a value.
*/
function value(mixed $value) : ValueDefinition
{
return new ValueDefinition($value);
}
}
if (! function_exists('DI\create')) {
/**
* Helper for defining an object.
*
* @param string|null $className Class name of the object.
* If null, the name of the entry (in the container) will be used as class name.
*/
function create(?string $className = null) : CreateDefinitionHelper
{
return new CreateDefinitionHelper($className);
}
}
if (! function_exists('DI\autowire')) {
/**
* Helper for autowiring an object.
*
* @param string|null $className Class name of the object.
* If null, the name of the entry (in the container) will be used as class name.
*/
function autowire(?string $className = null) : AutowireDefinitionHelper
{
return new AutowireDefinitionHelper($className);
}
}
if (! function_exists('DI\factory')) {
/**
* Helper for defining a container entry using a factory function/callable.
*
* @param callable|array|string $factory The factory is a callable that takes the container as parameter
* and returns the value to register in the container.
*/
function factory(callable|array|string $factory) : FactoryDefinitionHelper
{
return new FactoryDefinitionHelper($factory);
}
}
if (! function_exists('DI\decorate')) {
/**
* Decorate the previous definition using a callable.
*
* Example:
*
* 'foo' => decorate(function ($foo, $container) {
* return new CachedFoo($foo, $container->get('cache'));
* })
*
* @param callable $callable The callable takes the decorated object as first parameter and
* the container as second.
*/
function decorate(callable|array|string $callable) : FactoryDefinitionHelper
{
return new FactoryDefinitionHelper($callable, true);
}
}
if (! function_exists('DI\get')) {
/**
* Helper for referencing another container entry in an object definition.
*/
function get(string $entryName) : Reference
{
return new Reference($entryName);
}
}
if (! function_exists('DI\env')) {
/**
* Helper for referencing environment variables.
*
* @param string $variableName The name of the environment variable.
* @param mixed $defaultValue The default value to be used if the environment variable is not defined.
*/
function env(string $variableName, mixed $defaultValue = null) : EnvironmentVariableDefinition
{
// Only mark as optional if the default value was *explicitly* provided.
$isOptional = 2 === func_num_args();
return new EnvironmentVariableDefinition($variableName, $isOptional, $defaultValue);
}
}
if (! function_exists('DI\add')) {
/**
* Helper for extending another definition.
*
* Example:
*
* 'log.backends' => DI\add(DI\get('My\Custom\LogBackend'))
*
* or:
*
* 'log.backends' => DI\add([
* DI\get('My\Custom\LogBackend')
* ])
*
* @param mixed|array $values A value or an array of values to add to the array.
*
* @since 5.0
*/
function add($values) : ArrayDefinitionExtension
{
if (! is_array($values)) {
$values = [$values];
}
return new ArrayDefinitionExtension($values);
}
}
if (! function_exists('DI\string')) {
/**
* Helper for concatenating strings.
*
* Example:
*
* 'log.filename' => DI\string('{app.path}/app.log')
*
* @param string $expression A string expression. Use the `{}` placeholders to reference other container entries.
*
* @since 5.0
*/
function string(string $expression) : StringDefinition
{
return new StringDefinition($expression);
}
}