Move getMethods() to new ClassLike node

Class_, Interface_ and Trait_ extend the ClassLike node, which
provides the getMethods() method.

lib/PhpParser/Node/Stmt/ClassLike.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace PhpParser\Node\Stmt;
+
+use PhpParser\Node;
+
+/**
+ * Class, interface or trait.
+ *
+ * @property string $name  Name
+ * @property Node[] $stmts Statements
+ */
+abstract class ClassLike extends Node\Stmt {
+    public function getMethods() {
+        $methods = array();
+        foreach ($this->stmts as $stmt) {
+            if ($stmt instanceof ClassMethod) {
+                $methods[] = $stmt;
+            }
+        }
+        return $methods;
+    }
+}

lib/PhpParser/Node/Stmt/Class_.php

@@ -12,7 +12,7 @@ use PhpParser\Error;
  * @property Node\Name[]    $implements Names of implemented interfaces
  * @property Node[]         $stmts      Statements
  */
-class Class_ extends Node\Stmt
+class Class_ extends ClassLike
 {
     const MODIFIER_PUBLIC    =  1;
     const MODIFIER_PROTECTED =  2;
@@ -75,16 +75,6 @@ class Class_ extends Node\Stmt
         return (bool) ($this->type & self::MODIFIER_FINAL);
     }
 
-    public function getMethods() {
-        $methods = array();
-        foreach ($this->stmts as $stmt) {
-            if ($stmt instanceof ClassMethod) {
-                $methods[] = $stmt;
-            }
-        }
-        return $methods;
-    }
-
     /**
      * @internal
      */

lib/PhpParser/Node/Stmt/Interface_.php

@@ -10,7 +10,7 @@ use PhpParser\Error;
  * @property Node\Name[] $extends Extended interfaces
  * @property Node[]      $stmts   Statements
  */
-class Interface_ extends Node\Stmt
+class Interface_ extends ClassLike
 {
     protected static $specialNames = array(
         'self'   => true,

lib/PhpParser/Node/Stmt/Trait_.php

@@ -8,7 +8,7 @@ use PhpParser\Node;
  * @property string $name  Name
  * @property Node[] $stmts Statements
  */
-class Trait_ extends Node\Stmt
+class Trait_ extends ClassLike
 {
     /**
      * Constructs a trait node.
@@ -26,4 +26,4 @@ class Trait_ extends Node\Stmt
             $attributes
         );
     }
-}
+}

test/PhpParser/Node/Stmt/ClassTest.php

@@ -30,7 +30,7 @@ class ClassTest extends \PHPUnit_Framework_TestCase
             'stmts' => array(
                 new TraitUse(array()),
                 $methods[0],
-                new Const_(array()),
+                new ClassConst(array()),
                 $methods[1],
                 new Property(0, array()),
                 $methods[2],
@@ -39,4 +39,4 @@ class ClassTest extends \PHPUnit_Framework_TestCase
 
         $this->assertSame($methods, $class->getMethods());
     }
-}
+}

test/PhpParser/Node/Stmt/InterfaceTest.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace PhpParser\Node\Stmt;
+
+use PhpParser\Node;
+
+class InterfaceTest extends \PHPUnit_Framework_TestCase
+{
+    public function testGetMethods() {
+        $methods = array(
+            new ClassMethod('foo'),
+            new ClassMethod('bar'),
+        );
+        $interface = new Class_('Foo', array(
+            'stmts' => array(
+                new Node\Stmt\ClassConst(array(new Node\Const_('C1', new Node\Scalar\String('C1')))),
+                $methods[0],
+                new Node\Stmt\ClassConst(array(new Node\Const_('C2', new Node\Scalar\String('C2')))),
+                $methods[1],
+                new Node\Stmt\ClassConst(array(new Node\Const_('C3', new Node\Scalar\String('C3')))),
+            )
+        ));
+
+        $this->assertSame($methods, $interface->getMethods());
+    }
+}