Support for custom builder classes (#782)

See my comment https://github.com/barryvdh/laravel-ide-helper/pull/765#issuecomment-471014271:

The change in #765 made anonymous functions get reflected with `ReflectionMethod` instead of `ReflectionFunction`, which makes it lose the doc comment. This means that the generated helpers are missing their return types. This is because Closure is also an object and callable.

To fix it, Closure should be excluded from that new condition.

src/Alias.php

@@ -10,6 +10,7 @@
 
 namespace Barryvdh\LaravelIdeHelper;
 
+use Closure;
 use ReflectionClass;
 use Barryvdh\Reflection\DocBlock;
 use Barryvdh\Reflection\DocBlock\Context;
@@ -395,7 +396,7 @@ class Alias
             return new \ReflectionMethod($macro_func[0], $macro_func[1]);
         }
 
-        if (is_object($macro_func) && is_callable($macro_func)) {
+        if (is_object($macro_func) && is_callable($macro_func) && !$macro_func instanceof Closure) {
             return new \ReflectionMethod($macro_func, '__invoke');
         }
 

src/Console/MetaCommand.php

@@ -135,7 +135,7 @@ class MetaCommand extends Command
     protected function registerClassAutoloadExceptions()
     {
         spl_autoload_register(function ($class) {
-            throw new \Exception("Class '$class' not found.");
+            throw new \ReflectionException("Class '$class' not found.");
         });
     }
 

src/Console/ModelsCommand.php

@@ -446,14 +446,17 @@ class ModelsCommand extends Command
                     }
                 } elseif (in_array($method, ['query', 'newQuery', 'newModelQuery'])) {
                     $reflection = new \ReflectionClass($model);
-                    $this->setMethod($method, '\Illuminate\Database\Eloquent\Builder|\\' . $reflection->getName());
+
+                    $builder = get_class($model->newModelQuery());
+
+                    $this->setMethod($method, "\\{$builder}|\\" . $reflection->getName());
                 } elseif (!method_exists('Illuminate\Database\Eloquent\Model', $method)
                     && !Str::startsWith($method, 'get')
                 ) {
                     //Use reflection to inspect the code, based on Illuminate/Support/SerializableClosure.php
                     $reflection = new \ReflectionMethod($model, $method);
                     // php 7.x type or fallback to docblock
-                    $type = (string) $reflection->getReturnType() ?: $this->getReturnTypeFromDocBlock($reflection);
+                    $type = (string) $reflection->getReturnType() ?: (string)$this->getReturnTypeFromDocBlock($reflection);
 
                     $file = new \SplFileObject($reflection->getFileName());
                     $file->seek($reflection->getStartLine() - 1);
@@ -480,7 +483,7 @@ class ModelsCommand extends Command
                                'morphedByMany' => '\Illuminate\Database\Eloquent\Relations\MorphToMany'
                              ) as $relation => $impl) {
                         $search = '$this->' . $relation . '(';
-                        if (stripos($code, $search) || stripos($impl, $type) !== false) {
+                        if (stripos($code, $search) || stripos($impl, (string)$type) !== false) {
                             //Resolve the relation's model to a Relation object.
                             $methodReflection = new \ReflectionMethod($model, $method);
                             if ($methodReflection->getNumberOfParameters()) {