--- /dev/null
+<?php
+namespace Masterminds\HTML5\Tests\Parser;
+
+use Masterminds\HTML5\Elements;
+use Masterminds\HTML5\Parser\EventHandler;
+
+/**
+ * This testing class gathers events from a parser and builds a stack of events.
+ * It is useful for checking the output of a tokenizer.
+ *
+ * IMPORTANT:
+ *
+ * The startTag event also kicks the parser into TEXT_RAW when it encounters
+ * script or pre tags. This is to match the behavior required by the HTML5 spec,
+ * which says that the tree builder must tell the tokenizer when to switch states.
+ */
+class EventStack implements EventHandler
+{
+
+ protected $stack;
+
+ public function __construct()
+ {
+ $this->stack = array();
+ }
+
+ /**
+ * Get the event stack.
+ */
+ public function events()
+ {
+ return $this->stack;
+ }
+
+ public function depth()
+ {
+ return count($this->stack);
+ }
+
+ public function get($index)
+ {
+ return $this->stack[$index];
+ }
+
+ protected function store($event, $data = null)
+ {
+ $this->stack[] = array(
+ 'name' => $event,
+ 'data' => $data
+ );
+ }
+
+ public function doctype($name, $type = 0, $id = null, $quirks = false)
+ {
+ $args = array(
+ $name,
+ $type,
+ $id,
+ $quirks
+ );
+ $this->store('doctype', $args);
+ }
+
+ public function startTag($name, $attributes = array(), $selfClosing = false)
+ {
+ $args = func_get_args();
+ $this->store('startTag', $args);
+ if ($name == 'pre' || $name == 'script') {
+ return Elements::TEXT_RAW;
+ }
+ }
+
+ public function endTag($name)
+ {
+ $this->store('endTag', array(
+ $name
+ ));
+ }
+
+ public function comment($cdata)
+ {
+ $this->store('comment', array(
+ $cdata
+ ));
+ }
+
+ public function cdata($data)
+ {
+ $this->store('cdata', func_get_args());
+ }
+
+ public function text($cdata)
+ {
+ // fprintf(STDOUT, "Received TEXT event with: " . $cdata);
+ $this->store('text', array(
+ $cdata
+ ));
+ }
+
+ public function eof()
+ {
+ $this->store('eof');
+ }
+
+ public function parseError($msg, $line, $col)
+ {
+ // throw new EventStackParseError(sprintf("%s (line %d, col %d)", $msg, $line, $col));
+ // $this->store(sprintf("%s (line %d, col %d)", $msg, $line, $col));
+ $this->store('error', func_get_args());
+ }
+
+ public function processingInstruction($name, $data = null)
+ {
+ $this->store('pi', func_get_args());
+ }
+}