add ContaintsStmts interface to mark stmt classes with nested stmts inside

lib/PhpParser/Internal/PrintableNewAnonClassNode.php

@@ -15,7 +15,7 @@
  *
  * @internal
  */
-class PrintableNewAnonClassNode extends Expr {
+class PrintableNewAnonClassNode extends Expr implements Node\ContainsStmts {
     /** @var Node\AttributeGroup[] PHP attribute groups */
     public array $attrGroups;
     /** @var int Modifiers */

lib/PhpParser/Node/ContainsStmts.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpParser\Node;
+
+/**
+ * @property-read Stmt[] $stmts
+ */
+interface ContainsStmts {
+}

lib/PhpParser/Node/Expr/Closure.php

@@ -7,7 +7,7 @@
 use PhpParser\Node\Expr;
 use PhpParser\Node\FunctionLike;
 
-class Closure extends Expr implements FunctionLike {
+class Closure extends Expr implements FunctionLike, Node\ContainsStmts {
     /** @var bool Whether the closure is static */
     public bool $static;
     /** @var bool Whether to return by reference */

lib/PhpParser/Node/Stmt/Block.php

@@ -2,9 +2,10 @@
 
 namespace PhpParser\Node\Stmt;
 
+use PhpParser\Node\ContainsStmts;
 use PhpParser\Node\Stmt;
 
-class Block extends Stmt {
+class Block extends Stmt implements ContainsStmts {
     /** @var Stmt[] Statements */
     public array $stmts;
 

lib/PhpParser/Node/Stmt/Case_.php

@@ -4,7 +4,7 @@
 
 use PhpParser\Node;
 
-class Case_ extends Node\Stmt {
+class Case_ extends Node\Stmt implements Node\ContainsStmts {
     /** @var null|Node\Expr Condition (null for default) */
     public ?Node\Expr $cond;
     /** @var Node\Stmt[] Statements */

lib/PhpParser/Node/Stmt/Catch_.php

@@ -5,7 +5,7 @@
 use PhpParser\Node;
 use PhpParser\Node\Expr;
 
-class Catch_ extends Node\Stmt {
+class Catch_ extends Node\Stmt implements Node\ContainsStmts {
     /** @var Node\Name[] Types of exceptions to catch */
     public array $types;
     /** @var Expr\Variable|null Variable for exception */

lib/PhpParser/Node/Stmt/ClassLike.php

@@ -5,7 +5,7 @@
 use PhpParser\Node;
 use PhpParser\Node\PropertyItem;
 
-abstract class ClassLike extends Node\Stmt {
+abstract class ClassLike extends Node\Stmt implements Node\ContainsStmts {
     /** @var Node\Identifier|null Name */
     public ?Node\Identifier $name;
     /** @var Node\Stmt[] Statements */

lib/PhpParser/Node/Stmt/Do_.php

@@ -4,7 +4,7 @@
 
 use PhpParser\Node;
 
-class Do_ extends Node\Stmt {
+class Do_ extends Node\Stmt implements Node\ContainsStmts {
     /** @var Node\Stmt[] Statements */
     public array $stmts;
     /** @var Node\Expr Condition */

lib/PhpParser/Node/Stmt/ElseIf_.php

@@ -4,7 +4,7 @@
 
 use PhpParser\Node;
 
-class ElseIf_ extends Node\Stmt {
+class ElseIf_ extends Node\Stmt implements Node\ContainsStmts {
     /** @var Node\Expr Condition */
     public Node\Expr $cond;
     /** @var Node\Stmt[] Statements */

lib/PhpParser/Node/Stmt/Else_.php

@@ -4,7 +4,7 @@
 
 use PhpParser\Node;
 
-class Else_ extends Node\Stmt {
+class Else_ extends Node\Stmt implements Node\ContainsStmts {
     /** @var Node\Stmt[] Statements */
     public array $stmts;
 

lib/PhpParser/Node/Stmt/Finally_.php

@@ -4,7 +4,7 @@
 
 use PhpParser\Node;
 
-class Finally_ extends Node\Stmt {
+class Finally_ extends Node\Stmt implements Node\ContainsStmts {
     /** @var Node\Stmt[] Statements */
     public array $stmts;
 

lib/PhpParser/Node/Stmt/For_.php

@@ -4,7 +4,7 @@
 
 use PhpParser\Node;
 
-class For_ extends Node\Stmt {
+class For_ extends Node\Stmt implements Node\ContainsStmts {
     /** @var Node\Expr[] Init expressions */
     public array $init;
     /** @var Node\Expr[] Loop conditions */

lib/PhpParser/Node/Stmt/Foreach_.php

@@ -4,7 +4,7 @@
 
 use PhpParser\Node;
 
-class Foreach_ extends Node\Stmt {
+class Foreach_ extends Node\Stmt implements Node\ContainsStmts {
     /** @var Node\Expr Expression to iterate */
     public Node\Expr $expr;
     /** @var null|Node\Expr Variable to assign key to */

lib/PhpParser/Node/Stmt/Function_.php

@@ -5,7 +5,7 @@
 use PhpParser\Node;
 use PhpParser\Node\FunctionLike;
 
-class Function_ extends Node\Stmt implements FunctionLike {
+class Function_ extends Node\Stmt implements FunctionLike, Node\ContainsStmts {
     /** @var bool Whether function returns by reference */
     public bool $byRef;
     /** @var Node\Identifier Name */

lib/PhpParser/Node/Stmt/If_.php

@@ -4,7 +4,7 @@
 
 use PhpParser\Node;
 
-class If_ extends Node\Stmt {
+class If_ extends Node\Stmt implements Node\ContainsStmts {
     /** @var Node\Expr Condition expression */
     public Node\Expr $cond;
     /** @var Node\Stmt[] Statements */

lib/PhpParser/Node/Stmt/Namespace_.php

@@ -4,7 +4,7 @@
 
 use PhpParser\Node;
 
-class Namespace_ extends Node\Stmt {
+class Namespace_ extends Node\Stmt implements Node\ContainsStmts {
     /* For use in the "kind" attribute */
     public const KIND_SEMICOLON = 1;
     public const KIND_BRACED = 2;

lib/PhpParser/Node/Stmt/While_.php

@@ -4,7 +4,7 @@
 
 use PhpParser\Node;
 
-class While_ extends Node\Stmt {
+class While_ extends Node\Stmt implements Node\ContainsStmts {
     /** @var Node\Expr Condition */
     public Node\Expr $cond;
     /** @var Node\Stmt[] Statements */