add support for lexical scope

Author: withinboredom

Zend/zend.h

@@ -165,6 +165,7 @@ struct _zend_class_entry {
 	HashTable constants_table;
 
 	zend_class_entry *required_scope;
+	zend_class_entry *lexical_scope;
 	char required_scope_absolute;
 
 	ZEND_MAP_PTR_DEF(zend_class_mutable_data*, mutable_data);

Zend/zend_compile.c

@@ -9215,6 +9215,7 @@ static void zend_compile_class_decl(znode *result, zend_ast *ast, bool toplevel)
 			// if a class is private or protected, we need to require the correct scope
 			ce->required_scope = propFlags & (ZEND_ACC_PRIVATE|ZEND_ACC_PROTECTED) ? CG(active_class_entry) : NULL;
 			ce->required_scope_absolute = propFlags & ZEND_ACC_PRIVATE ? true : false;
+			ce->lexical_scope = CG(active_class_entry);
 
 			// ensure the class is treated as a top-level class and not an anon class
 			toplevel = true;