145 lines
3.8 KiB
PHP
145 lines
3.8 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Shimmie2;
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
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* Event API *
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\* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/** @private */
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global $_shm_event_listeners;
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$_shm_event_listeners = [];
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function _load_event_listeners(): void
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{
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global $_shm_event_listeners;
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$cache_path = data_path("cache/shm_event_listeners.php");
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if (SPEED_HAX && file_exists($cache_path)) {
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require_once($cache_path);
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} else {
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_set_event_listeners();
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if (SPEED_HAX) {
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_dump_event_listeners($_shm_event_listeners, $cache_path);
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}
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}
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}
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function _clear_cached_event_listeners(): void
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{
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if (file_exists(data_path("cache/shm_event_listeners.php"))) {
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unlink(data_path("cache/shm_event_listeners.php"));
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}
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}
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function _set_event_listeners(): void
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{
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global $_shm_event_listeners;
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$_shm_event_listeners = [];
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foreach (get_subclasses_of("Shimmie2\Extension") as $class) {
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/** @var Extension $extension */
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$extension = new $class();
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// skip extensions which don't support our current database
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if (!$extension->info->is_supported()) {
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continue;
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}
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foreach (get_class_methods($extension) as $method) {
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if (substr($method, 0, 2) == "on") {
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$event = substr($method, 2) . "Event";
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$pos = $extension->get_priority() * 100;
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while (isset($_shm_event_listeners[$event][$pos])) {
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$pos += 1;
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}
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$_shm_event_listeners[$event][$pos] = $extension;
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}
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}
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}
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}
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function _namespaced_class_name(string $class): string
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{
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return str_replace("Shimmie2\\", "", $class);
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}
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function _dump_event_listeners(array $event_listeners, string $path): void
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{
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$p = "<"."?php\nnamespace Shimmie2;\n";
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foreach (get_subclasses_of("Shimmie2\Extension") as $class) {
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$scn = _namespaced_class_name($class);
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$p .= "\$$scn = new $scn(); ";
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}
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$p .= "\$_shm_event_listeners = array(\n";
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foreach ($event_listeners as $event => $listeners) {
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$p .= "\t'$event' => array(\n";
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foreach ($listeners as $id => $listener) {
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$p .= "\t\t$id => \$"._namespaced_class_name(get_class($listener)).",\n";
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}
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$p .= "\t),\n";
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}
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$p .= ");\n";
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file_put_contents($path, $p);
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}
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/** @private */
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global $_shm_event_count;
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$_shm_event_count = 0;
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/**
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* Send an event to all registered Extensions.
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*
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* @template T of Event
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* @param T $event
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* @return T
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*/
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function send_event(Event $event): Event
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{
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global $tracer_enabled;
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global $_shm_event_listeners, $_shm_event_count, $_tracer;
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$event_name = _namespaced_class_name(get_class($event));
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if (!isset($_shm_event_listeners[$event_name])) {
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return $event;
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}
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$method_name = "on".str_replace("Event", "", $event_name);
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// send_event() is performance sensitive, and with the number
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// of times tracer gets called the time starts to add up
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if ($tracer_enabled) {
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$_tracer->begin(get_class($event));
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}
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// SHIT: https://bugs.php.net/bug.php?id=35106
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$my_event_listeners = $_shm_event_listeners[$event_name];
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ksort($my_event_listeners);
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foreach ($my_event_listeners as $listener) {
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if ($tracer_enabled) {
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$_tracer->begin(get_class($listener));
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}
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if (method_exists($listener, $method_name)) {
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$listener->$method_name($event);
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}
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if ($tracer_enabled) {
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$_tracer->end();
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}
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if ($event->stop_processing===true) {
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break;
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}
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}
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$_shm_event_count++;
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if ($tracer_enabled) {
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$_tracer->end();
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}
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return $event;
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}
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