Feb 15th 2023 update

external/graphqlparser/ast/cxx_impl.py

@@ -0,0 +1,61 @@
+# Copyright 2019-present, GraphQL Foundation
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+from license import C_LICENSE_COMMENT
+
+class Printer(object):
+  def __init__(self):
+    pass
+
+  def start_file(self):
+    print C_LICENSE_COMMENT + '''/** @generated */
+
+#include "Ast.h"
+#include "AstVisitor.h"
+
+namespace facebook {
+namespace graphql {
+namespace ast {
+'''
+
+  def end_file(self):
+    print '}  // namespace ast'
+    print '}  // namespace graphql'
+    print '}  // namespace facebook'
+
+  def start_type(self, name):
+    print '''void %s::accept(visitor::AstVisitor *visitor) const {
+  if (visitor->visit%s(*this)) {
+''' % (name, name)
+
+  def field(self, type, name, nullable, plural):
+    if type in ['OperationKind', 'string', 'boolean']:
+      return
+
+    if plural:
+      accept = '{ for (const auto &x : *%s_) { x->accept(visitor); } }' % name
+      if nullable:
+        accept = 'if (%s_) %s' % (name, accept)
+      print '    ' + accept
+    else:
+      accept = '%s_->accept(visitor);' % name
+      if nullable:
+        accept = 'if (%s_) { %s }' % (name, accept)
+      print '    ' + accept
+
+  def end_type(self, name):
+    print '''  }
+  visitor->endVisit%s(*this);
+}
+''' % name
+
+  def start_union(self, name):
+    pass
+
+  def union_option(self, option):
+    pass
+
+  def end_union(self, name):
+    pass