1 files changed, 33 insertions, 0 deletions
diff --git a/deps/v8/third_party/antlr4/runtime/Cpp/runtime/src/tree/xpath/XPathRuleElement.cpp b/deps/v8/third_party/antlr4/runtime/Cpp/runtime/src/tree/xpath/XPathRuleElement.cpp
new file mode 100644
index 0000000000..498c901708
--- /dev/null
+++ b/deps/v8/third_party/antlr4/runtime/Cpp/runtime/src/tree/xpath/XPathRuleElement.cpp
@@ -0,0 +1,33 @@
+/* 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"
+#include "tree/Trees.h"
+
+#include "XPathRuleElement.h"
+
+using namespace antlr4::tree;
+using namespace antlr4::tree::xpath;
+
+XPathRuleElement::XPathRuleElement(const std::string& ruleName,
+                                   size_t ruleIndex)
+    : XPathElement(ruleName) {
+  _ruleIndex = ruleIndex;
+}
+
+std::vector<ParseTree*> XPathRuleElement::evaluate(ParseTree* t) {
+  // return all children of t that match nodeName
+  std::vector<ParseTree*> nodes;
+  for (auto c : t->children) {
+    if (antlrcpp::is<ParserRuleContext*>(c)) {
+      ParserRuleContext* ctx = dynamic_cast<ParserRuleContext*>(c);
+      if ((ctx->getRuleIndex() == _ruleIndex && !_invert) ||
+          (ctx->getRuleIndex() != _ruleIndex && _invert)) {
+        nodes.push_back(ctx);
+      }
+    }
+  }
+  return nodes;
+}