Added anonymous functions

Author: Slamdunk

src/StaticAnalysis/ExecutableLinesFindingVisitor.php

@@ -43,8 +43,28 @@ public function enterNode(Node $node): void
         }
 
         if ($node instanceof Node\Stmt\Function_ ||
-            $node instanceof Node\Stmt\ClassMethod
+            $node instanceof Node\Stmt\ClassMethod ||
+            $node instanceof Node\Expr\Closure
         ) {
+            $startLine = $node->getStartLine();
+
+            if ($node instanceof Node\Expr\Closure) {
+                if ([] === $node->stmts ||
+                    (
+                        1 === count($node->stmts) &&
+                        $node->stmts[0] instanceof Node\Stmt\Nop
+                    )
+                ) {
+                    $startLine = $node->getEndLine();
+
+                    if ($startLine === $node->getStartLine()) {
+                        return;
+                    }
+                } else {
+                    $startLine = $node->stmts[0]->getStartLine();
+                }
+            }
+
             $endLine = $node->getEndLine() - 1;
 
             if ([] === $node->stmts ||
@@ -55,7 +75,12 @@ public function enterNode(Node $node): void
             ) {
                 $endLine++;
             }
-            $this->setLineBranch($node->getStartLine(), $endLine, ++$this->nextBranch);
+
+            if ($endLine < $startLine) {
+                return;
+            }
+
+            $this->setLineBranch($startLine, $endLine, ++$this->nextBranch);
 
             return;
         }

tests/_files/source_for_branched_exec_lines.php

@@ -371,4 +371,38 @@ public function withCall()              // +3
         $date = DateTime::createFromImmutable($date);       // 0
         ++$var;                             // +1
     }
+    public function withClosure()           // +1
+    {                                       // 0
+        $myf = function(){};                // 0
+        $myf = function(){                  // 0
+        };                                  // +1
+        $myf = function()                   // -1
+        {                                   // 0
+        };                                  // +2
+        $myf = function(){                  // -2
+            return 1;                       // +3
+        };                                  // -3
+        $myf = function()                   // 0
+        {                                   // 0
+            return 1;                       // +4
+        };                                  // -4
+        $var = 1;                           // 0
+        $myf                                // 0
+            =                               // 0
+            function                        // 0
+            (                               // 0
+                $var2                       // 0
+                =                           // 0
+                2                           // 0
+            )                               // 0
+                use                         // 0
+                (                           // 0
+                    &                       // 0
+                    $var                    // 0
+                )                           // 0
+            :                               // 0
+            void                            // 0
+        {                                   // 0
+        };                                  // +5
+    }
 }