<?php
 
 namespace Illuminate\View\Compilers\Concerns;
 
 trait CompilesEchos
 {
     /**
      * Compile Blade echos into valid PHP.
      *
      * @param  string  $value
      * @return string
      */
     protected function compileEchos($value)
     {
         foreach ($this->getEchoMethods() as $method) {
             $value = $this->$method($value);
         }
 
         return $value;
     }
 
     /**
      * Get the echo methods in the proper order for compilation.
      *
      * @return array
      */
     protected function getEchoMethods()
     {
         return [
             'compileRawEchos',
             'compileEscapedEchos',
             'compileRegularEchos',
         ];
     }
 
     /**
      * Compile the "raw" echo statements.
      *
      * @param  string  $value
      * @return string
      */
     protected function compileRawEchos($value)
     {
         $pattern = sprintf('/(@)?%s\s*(.+?)\s*%s(\r?\n)?/s', $this->rawTags[0], $this->rawTags[1]);
 
         $callback = function ($matches) {
             $whitespace = empty($matches[3]) ? '' : $matches[3].$matches[3];
 
             return $matches[1] ? substr($matches[0], 1) : "<?php echo {$matches[2]}; ?>{$whitespace}";
         };
 
         return preg_replace_callback($pattern, $callback, $value);
     }
 
     /**
      * Compile the "regular" echo statements.
      *
      * @param  string  $value
      * @return string
      */
     protected function compileRegularEchos($value)
     {
         $pattern = sprintf('/(@)?%s\s*(.+?)\s*%s(\r?\n)?/s', $this->contentTags[0], $this->contentTags[1]);
 
         $callback = function ($matches) {
             $whitespace = empty($matches[3]) ? '' : $matches[3].$matches[3];
 
             $wrapped = sprintf($this->echoFormat, $matches[2]);
 
             return $matches[1] ? substr($matches[0], 1) : "<?php echo {$wrapped}; ?>{$whitespace}";
         };
 
         return preg_replace_callback($pattern, $callback, $value);
     }
 
     /**
      * Compile the escaped echo statements.
      *
      * @param  string  $value
      * @return string
      */
     protected function compileEscapedEchos($value)
     {
         $pattern = sprintf('/(@)?%s\s*(.+?)\s*%s(\r?\n)?/s', $this->escapedTags[0], $this->escapedTags[1]);
 
         $callback = function ($matches) {
             $whitespace = empty($matches[3]) ? '' : $matches[3].$matches[3];
 
             return $matches[1] ? $matches[0] : "<?php echo e({$matches[2]}); ?>{$whitespace}";
         };
 
         return preg_replace_callback($pattern, $callback, $value);
     }
 }