1 files changed, 128 insertions, 0 deletions
diff --git a/platform/www/inc/Parsing/Parser.php b/platform/www/inc/Parsing/Parser.php
new file mode 100644
index 0000000..63f0141
--- /dev/null
+++ b/platform/www/inc/Parsing/Parser.php
@@ -0,0 +1,128 @@
+<?php
+
+namespace dokuwiki\Parsing;
+
+use Doku_Handler;
+use dokuwiki\Parsing\Lexer\Lexer;
+use dokuwiki\Parsing\ParserMode\Base;
+use dokuwiki\Parsing\ParserMode\ModeInterface;
+
+/**
+ * Sets up the Lexer with modes and points it to the Handler
+ * For an intro to the Lexer see: wiki:parser
+ */
+class Parser {
+
+    /** @var Doku_Handler */
+    protected $handler;
+
+    /** @var Lexer $lexer */
+    protected $lexer;
+
+    /** @var ModeInterface[] $modes */
+    protected $modes = array();
+
+    /** @var bool mode connections may only be set up once */
+    protected $connected = false;
+
+    /**
+     * dokuwiki\Parsing\Doku_Parser constructor.
+     *
+     * @param Doku_Handler $handler
+     */
+    public function __construct(Doku_Handler $handler) {
+        $this->handler = $handler;
+    }
+
+    /**
+     * Adds the base mode and initialized the lexer
+     *
+     * @param Base $BaseMode
+     */
+    protected function addBaseMode($BaseMode) {
+        $this->modes['base'] = $BaseMode;
+        if(!$this->lexer) {
+            $this->lexer = new Lexer($this->handler, 'base', true);
+        }
+        $this->modes['base']->Lexer = $this->lexer;
+    }
+
+    /**
+     * Add a new syntax element (mode) to the parser
+     *
+     * PHP preserves order of associative elements
+     * Mode sequence is important
+     *
+     * @param string $name
+     * @param ModeInterface $Mode
+     */
+    public function addMode($name, ModeInterface $Mode) {
+        if(!isset($this->modes['base'])) {
+            $this->addBaseMode(new Base());
+        }
+        $Mode->Lexer = $this->lexer; // FIXME should be done by setter
+        $this->modes[$name] = $Mode;
+    }
+
+    /**
+     * Connect all modes with each other
+     *
+     * This is the last step before actually parsing.
+     */
+    protected function connectModes() {
+
+        if($this->connected) {
+            return;
+        }
+
+        foreach(array_keys($this->modes) as $mode) {
+            // Base isn't connected to anything
+            if($mode == 'base') {
+                continue;
+            }
+            $this->modes[$mode]->preConnect();
+
+            foreach(array_keys($this->modes) as $cm) {
+
+                if($this->modes[$cm]->accepts($mode)) {
+                    $this->modes[$mode]->connectTo($cm);
+                }
+
+            }
+
+            $this->modes[$mode]->postConnect();
+        }
+
+        $this->connected = true;
+    }
+
+    /**
+     * Parses wiki syntax to instructions
+     *
+     * @param string $doc the wiki syntax text
+     * @return array instructions
+     */
+    public function parse($doc) {
+        $this->connectModes();
+        // Normalize CRs and pad doc
+        $doc = "\n" . str_replace("\r\n", "\n", $doc) . "\n";
+        $this->lexer->parse($doc);
+
+        if (!method_exists($this->handler, 'finalize')) {
+            /** @deprecated 2019-10 we have a legacy handler from a plugin, assume legacy _finalize exists */
+
+            \dokuwiki\Debug\DebugHelper::dbgCustomDeprecationEvent(
+                'finalize()',
+                get_class($this->handler) . '::_finalize()',
+                __METHOD__,
+                __FILE__,
+                __LINE__
+            );
+            $this->handler->_finalize();
+        } else {
+            $this->handler->finalize();
+        }
+        return $this->handler->calls;
+    }
+
+}