added section class. refactored session for ioc usage. improved controller. added yielding and sections to blade. general blade improvements.

laravel/blade.php

@@ -2,6 +2,21 @@
 
 class Blade {
 
+	/**
+	 * All of the compiler functions used by Blade.
+	 *
+	 * @var array
+	 */
+	protected static $compilers = array(
+		'echos',
+		'structure_openings',
+		'structure_closings',
+		'else',
+		'yields',
+		'section_start',
+		'section_end',
+	);
+
 	/**
 	 * Compiles the specified file containing Blade pseudo-code into valid PHP.
 	 *
@@ -10,18 +25,38 @@ class Blade {
 	 */
 	public static function compile($path)
 	{
-		$value = file_get_contents($path);
+		return static::compile_string(file_get_contents($path));
+	}
 
-		return static::closings(static::openings(static::echos($value)));
+	/**
+	 * Compiles the given string containing Blade pseudo-code into valid PHP.
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	public static function compile_string($value)
+	{
+		foreach (static::$compilers as $compiler)
+		{
+			$method = "compile_{$compiler}";
+
+			$value = static::$method($value);
+		}
+
+		return $value;
 	}
 
 	/**
 	 * Rewrites Blade echo statements into PHP echo statements.
 	 *
+	 * Blade echo statements are simply PHP statement enclosed within double curly
+	 * braces. For example, {{$content}} will simply echo out the content variable
+	 * to the output buffer.
+	 *
 	 * @param  string  $value
 	 * @return string
 	 */
-	protected static function echos($value)
+	protected static function compile_echos($value)
 	{
 		return preg_replace('/\{\{(.+?)\}\}/', '<?php echo $1; ?>', $value);
 	}
@@ -29,12 +64,18 @@ class Blade {
 	/**
 	 * Rewrites Blade structure openings into PHP structure openings.
 	 *
+	 * By "structures", we mean the if, elseif, foreach, for, and while statements.
+	 * All of these structures essentially have the same format, and can be lumped
+	 * into a single regular expression.
+	 *
 	 * @param  string  $value
 	 * @return string
 	 */
-	protected static function openings($value)
+	protected static function compile_structure_openings($value)
 	{
-		return preg_replace('/@(if|elseif|foreach|for|while)(\s*\(.*?\))\:/', '<?php $1$2: ?>', $value);
+		$pattern = '/@(if|elseif|foreach|for|while)(\s*\(.*?\))/';
+
+		return preg_replace($pattern, '<?php $1$2: ?>', $value);
 	}
 
 	/**
@@ -43,12 +84,65 @@ class Blade {
 	 * @param  string  $value
 	 * @return string
 	 */
-	protected static function closings($value)
+	protected static function compile_structure_closings($value)
 	{
-		$value = preg_replace('/(\s*)@(else)(.*?)\:/', '$1<?php $2$3: ?>', $value);
-		$value = preg_replace('/(\s*)@(endif|endforeach|endfor|endwhile)(\s*)/', '$1<?php $2; ?> $3', $value);
+		$pattern = '/@(endif|endforeach|endfor|endwhile)(\s*)/';
 
-		return $value;
+		return preg_replace($pattern, '<?php $1; ?>$2', $value);
+	}
+
+	/**
+	 * Rewrites Blade else statements into PHP else statements.
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	protected static function compile_else($value)
+	{
+		return preg_replace('/(\s*)@(else)(\s*)/', '$1<?php $2: ?>$3', $value);
+	}
+
+	/**
+	 * Rewrites Blade @yield statements into Section statements.
+	 *
+	 * The Blade @yield statement is a shortcut to the Section::yield method.
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	protected static function compile_yields($value)
+	{
+		$pattern = '/(\s*)@yield(\s*\(.*?\))/';
+
+		return preg_replace($pattern, '$1<?php echo \\Laravel\\Section::yield$2; ?>', $value);
+	}
+
+	/**
+	 * Rewrites Blade @section statements into Section statements.
+	 *
+	 * The Blade @section statement is a shortcut to the Section::start method.
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	protected static function compile_section_start($value)
+	{
+		$pattern = '/(\s*)@section(\s*\(.*?\))/';
+
+		return preg_replace($pattern, '$1<?php \\Laravel\\Section::start$2; ?>', $value);
+	}
+
+	/**
+	 * Rewrites Blade @endsection statements into Section statements.
+	 *
+	 * The Blade @endsection statement is a shortcut to the Section::stop method.
+	 *
+	 * @param  string  $value
+	 * @return string
+	 */
+	protected static function compile_section_end($value)
+	{
+		return preg_replace('/@endsection/', '<?php \\Laravel\\Section::stop(); ?>', $value);
 	}
 
 }