#45 Add abstract tree and string processor class

src/StackFormation/PreProcessor/Stage/AbstractStringPreProcessorStage.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace StackFormation\PreProcessor\Stage;
+
+abstract class AbstractStringPreProcessorStage
+{
+    protected $stringPreProcessor; // reference to parent
+
+    /**
+     * @param \StackFormation\PreProcessor\StringPreProcessor $stringPreProcessor
+     */
+    public function __construct(\StackFormation\PreProcessor\StringPreProcessor $stringPreProcessor) {
+        $this->stringPreProcessor = $stringPreProcessor;
+    }
+
+    /**
+     * @param string $content
+     * @throws \StackFormation\Exception\StringPreProcessorException
+     */
+    public function __invoke($content)
+    {
+        try {
+            return $this->invoke($content);
+        } catch (\Exception $e) {
+
+            throw new \Exception('TODO create StringPreProcessorException');
+            // TODO
+            //throw new \StackFormation\Exception\StringPreProcessorException($content, $e);
+        }
+    }
+
+    /**
+     * @param string $content
+     */
+    abstract function invoke($content);
+}

src/StackFormation/PreProcessor/Stage/AbstractTreePreProcessorStage.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace StackFormation\PreProcessor\Stage;
+
+use StackFormation\PreProcessor\Rootline;
+
+abstract class AbstractTreePreProcessorStage
+{
+    protected $treePreProcessor;
+    protected $basePath;
+
+    /**
+     * @param \StackFormation\PreProcessor\TreePreProcessor $treePreProcessor
+     * @param string $basePath
+     */
+    public function __construct(\StackFormation\PreProcessor\TreePreProcessor $treePreProcessor, $basePath) {
+        $this->treePreProcessor = $treePreProcessor;
+        $this->basePath = $basePath;
+    }
+
+    public function __invoke() {}
+
+    /**
+     * @param string $path
+     * @param string $value
+     * @param Rootline $rootLineReferences
+     * @return mixed
+     */
+    abstract function invoke($path, $value, Rootline $rootLineReferences);
+}