Fix issue #42 and add regression test (#43)

src/SymbolFinder.php

@@ -73,6 +73,8 @@ class SymbolFinder extends NodeVisitorAbstract
             }
         } else {
             $this->nameStack[] = $containerName;
+            // We are not interested in unnamed nodes, return
+            return;
         }
 
         $class = get_class($node);

tests/PhpDocumentTest.php

@@ -0,0 +1,70 @@
+<?php
+declare(strict_types = 1);
+
+namespace LanguageServer\Tests\Server;
+
+use PHPUnit\Framework\TestCase;
+use LanguageServer\Tests\MockProtocolStream;
+use LanguageServer\{LanguageClient, Project};
+use LanguageServer\Protocol\SymbolKind;
+
+class PhpDocumentTest extends TestCase
+{
+     /**
+     * @var Project $project
+     */
+    private $project;
+
+    public function setUp()
+    {
+        $this->project = new Project(new LanguageClient(new MockProtocolStream()));
+    }
+
+    public function testParsesVariableVariables()
+    {
+        $document = $this->project->getDocument('whatever');
+        
+        $document->updateContent("<?php\n$\$a = 'foo';\n\$bar = 'baz';\n");
+
+        $symbols = $document->getSymbols();
+
+        $this->assertEquals([
+            [
+                'name' => 'a',
+                'kind' => SymbolKind::VARIABLE,
+                'location' => [
+                    'uri' => 'whatever',
+                    'range' => [
+                        'start' => [
+                            'line' => 1,
+                            'character' => 0
+                        ],
+                        'end' => [
+                            'line' => 1,
+                            'character' => 3
+                        ]
+                    ]
+                ],
+                'containerName' => null
+            ],
+            [
+                'name' => 'bar',
+                'kind' => SymbolKind::VARIABLE,
+                'location' => [
+                    'uri' => 'whatever',
+                    'range' => [
+                        'start' => [
+                            'line' => 2,
+                            'character' => 0
+                        ],
+                        'end' => [
+                            'line' => 2,
+                            'character' => 4
+                        ]
+                    ]
+                ],
+                'containerName' => null
+            ]
+        ], json_decode(json_encode($symbols), true));
+    }
+}