Feb 15th 2023 update

external/graphqlparser/ast/cxx_visitor.py

@@ -0,0 +1,64 @@
+# 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 casing import camel, title
+from license import C_LICENSE_COMMENT
+
+class Printer(object):
+  def __init__(self):
+    pass
+
+  def start_file(self):
+    print C_LICENSE_COMMENT + '''/** @generated */
+
+#pragma once
+
+#include "Ast.h"
+
+namespace facebook {
+namespace graphql {
+namespace ast {
+namespace visitor {
+
+class AstVisitor {
+public:
+  virtual ~AstVisitor() {}
+'''
+
+  def end_file(self):
+    print '};' # end AstVisitor
+    print
+    print '}'
+    print '}'
+    print '}'
+    print '}'
+
+  def start_type(self, name):
+    titleName = title(name)
+    camelName = camel(titleName)
+    print '  virtual bool visit%s(const %s &%s) { return true; }' % (
+      titleName,
+      titleName,
+      camelName)
+    print '  virtual void endVisit%s(const %s &%s) { }' % (
+      titleName,
+      titleName,
+      camelName)
+    print
+
+  def end_type(self, name):
+    pass
+
+  def field(self, type, name, nullable, plural):
+    pass
+
+  def start_union(self, name):
+    pass
+
+  def union_option(self, option):
+    pass
+
+  def end_union(self, name):
+    pass