Collect module implementations of a single hook.

Parameters

array $cache: The preprocess hook.

string $hook: The theme registry, as documented in \Drupal\Core\Theme\Registry::processExtension().

Return value

array A list of preprocess functions.

2 calls to Registry::collectModulePreprocess()

Registry::build in core/lib/Drupal/Core/Theme/Registry.php

Builds the theme registry cache.

Registry::processExtension in core/lib/Drupal/Core/Theme/Registry.php

Process a single implementation of hook_theme().

File

core/lib/Drupal/Core/Theme/Registry.php, line 953

Class

Registry

Defines the theme registry service.

Namespace

Drupal\Core\Theme

Code

protected function collectModulePreprocess(array &$cache, string $hook) : array {
  $preprocess_functions = [];
  // This is used so we can collect all preprocess functions in modules but
  // prevent them from being executed. Registry needs to cache preprocess
  // functions so we only want to gather the ones that exist, but we do not
  // want to execute them. Callable is not used so that preprocess
  // implementations are not executed.
  $this->moduleHandler
    ->invokeAllWith($hook, function (callable $callable, string $module) use ($hook, &$cache, &$preprocess_functions) {
    $function = $module . '_' . $hook;
    $cache[self::PREPROCESS_INVOKES][$function] = [
      'module' => $module,
      'hook' => $hook,
    ];
    $preprocess_functions[] = $function;
  });
  return $preprocess_functions;
}

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