Improve handling of abstract classes (#391)

src/DefinitionResolver.php

@@ -114,7 +114,7 @@ class DefinitionResolver
         // For everything else, get the doc block summary corresponding to the current node.
         $docBlock = $this->getDocBlock($node);
         if ($docBlock !== null) {
-            // check wether we have a description, when true, add a new paragraph
+            // check whether we have a description, when true, add a new paragraph
             // with the description
             $description = $docBlock->getDescription()->render();
 
@@ -174,7 +174,11 @@ class DefinitionResolver
         $def->fqn = $fqn;
 
         // Determines whether the suggestion will show after "new"
-        $def->canBeInstantiated = $node instanceof Node\Statement\ClassDeclaration;
+        $def->canBeInstantiated = (
+            $node instanceof Node\Statement\ClassDeclaration &&
+            // check whether it is not an abstract class
+            ($node->abstractOrFinalModifier === null || $node->abstractOrFinalModifier->kind !== PhpParser\TokenKind::AbstractKeyword)
+        );
 
         // Interfaces, classes, traits, namespaces, functions, and global const elements
         $def->isGlobal = (

src/LanguageServer.php

@@ -106,7 +106,7 @@ class LanguageServer extends AdvancedJsonRpc\Dispatcher
     protected $definitionResolver;
 
     /**
-     * @param PotocolReader  $reader
+     * @param ProtocolReader  $reader
      * @param ProtocolWriter $writer
      */
     public function __construct(ProtocolReader $reader, ProtocolWriter $writer)
@@ -132,7 +132,7 @@ class LanguageServer extends AdvancedJsonRpc\Dispatcher
                     // If a ResponseError is thrown, send it back in the Response
                     $error = $e;
                 } catch (Throwable $e) {
-                    // If an unexpected error occured, send back an INTERNAL_ERROR error response
+                    // If an unexpected error occurred, send back an INTERNAL_ERROR error response
                     $error = new AdvancedJsonRpc\Error(
                         (string)$e,
                         AdvancedJsonRpc\ErrorCode::INTERNAL_ERROR,