Initial commit from sysy-main

antlr/antlr4-runtime-4.12.0/runtime/src/tree/ParseTree.cpp

@@ -0,0 +1,12 @@
+/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
+ * Use of this file is governed by the BSD 3-clause license that
+ * can be found in the LICENSE.txt file in the project root.
+ */
+
+#include "tree/ParseTree.h"
+
+using namespace antlr4::tree;
+
+bool ParseTree::operator == (const ParseTree &other) const {
+  return &other == this;
+}