Same name and namespace in other branches

1. 8.9.x core/lib/Drupal/Component/Utility/ArgumentsResolver.php \Drupal\Component\Utility\ArgumentsResolver::getArgument()
2. 10 core/lib/Drupal/Component/Utility/ArgumentsResolver.php \Drupal\Component\Utility\ArgumentsResolver::getArgument()
3. 11.x core/lib/Drupal/Component/Utility/ArgumentsResolver.php \Drupal\Component\Utility\ArgumentsResolver::getArgument()

Gets the argument value for a parameter.

Parameters

\ReflectionParameter $parameter: The parameter of a callable to get the value for.

Return value

mixed The value of the requested parameter value.

Throws

\RuntimeException Thrown when there is a missing parameter.

1 call to ArgumentsResolver::getArgument()

ArgumentsResolver::getArguments in core/lib/Drupal/Component/Utility/ArgumentsResolver.php

Gets arguments suitable for passing to the given callable.

File

core/lib/Drupal/Component/Utility/ArgumentsResolver.php, line 71

Class

ArgumentsResolver

Resolves the arguments to pass to a callable.

Namespace

Drupal\Component\Utility

Code

protected function getArgument(\ReflectionParameter $parameter) {
    $parameter_type_hint = Reflection::getParameterClassName($parameter);
    $parameter_name = $parameter->getName();
    // If the argument exists and is NULL, return it, regardless of
    // parameter type hint.
    if (!isset($this->objects[$parameter_name]) && array_key_exists($parameter_name, $this->objects)) {
        return NULL;
    }
    if ($parameter_type_hint) {
        $parameter_type_hint = new \ReflectionClass($parameter_type_hint);
        // If the argument exists and complies with the type hint, return it.
        if (isset($this->objects[$parameter_name]) && is_object($this->objects[$parameter_name]) && $parameter_type_hint->isInstance($this->objects[$parameter_name])) {
            return $this->objects[$parameter_name];
        }
        // Otherwise, resolve wildcard arguments by type matching.
        foreach ($this->wildcards as $wildcard) {
            if ($parameter_type_hint->isInstance($wildcard)) {
                return $wildcard;
            }
        }
    }
    elseif (isset($this->scalars[$parameter_name])) {
        return $this->scalars[$parameter_name];
    }
    // If the callable provides a default value, use it.
    if ($parameter->isDefaultValueAvailable()) {
        return $parameter->getDefaultValue();
    }
    // Can't resolve it: call a method that throws an exception or can be
    // overridden to do something else.
    return $this->handleUnresolvedArgument($parameter);
}

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