Refactor lines

Author: Andrew Mischenko

src/Line/ContentLineInterface.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Krlove\Generator;
+
+/**
+ * Interface ArrayableInterface
+ * @package Krlove\Generator
+ */
+interface LineableInterface
+{
+    /**
+     * @return string|string[]
+     */
+    public function toLines();
+}

src/Line/EmptyLine.php

@@ -2,13 +2,13 @@
 
 namespace Krlove\Generator\Model;
 
-use Krlove\Generator\RenderableInterface;
+use Krlove\Generator\RenderableModel;
 
 /**
  * Class Argument
  * @package Krlove\Generator\Model
  */
-class ArgumentModel implements RenderableInterface
+class ArgumentModel extends RenderableModel
 {
     /**
      * @var string
@@ -41,7 +41,7 @@ public function __construct($name, $type = null, $default = null)
     /**
      * {@inheritDoc}
      */
-    public function render()
+    public function toLines()
     {
         if ($this->type !== null) {
             return $this->type . ' ' . $this->name;

src/Line/IndentLine.php

@@ -2,16 +2,16 @@
 
 namespace Krlove\Generator;
 
-use Krlove\Generator\Line\LineInterface;
-
 /**
  * Interface RenderableInterface
  * @package Krlove\Generator
  */
 interface RenderableInterface
 {
     /**
-     * @return LineInterface $line
+     * @param int $indent
+     *
+     * @return string
      */
-    public function render();
+    public function render($indent = 0);
 }

src/Line/Line.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Krlove\Generator;
+
+/**
+ * Class RenderableModel
+ * @package Krlove\Generator
+ */
+abstract class RenderableModel implements RenderableInterface, LineableInterface
+{
+    /**
+     * {@inheritDoc}
+     */
+    final public function render($indent = 0)
+    {
+        $lines = $this->toLines();
+
+        if (!is_array($lines)) {
+            $lines = [$lines];
+        }
+
+        if ($indent > 0) {
+            array_walk($lines, function (&$item) use ($indent) {
+                $item = str_repeat(' ', $indent) . $item;
+            });
+        }
+
+        return implode(PHP_EOL, $lines);
+    }
+}