antlr4-cpp-runtime-4.9.2-source/runtime/src/tree/xpath/XPathTokenElement.cpp


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/* 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 "support/CPPUtils.h"
#include "Token.h"

#include "XPathTokenElement.h"

using namespace antlr4;
using namespace antlr4::tree;
using namespace antlr4::tree::xpath;

XPathTokenElement::XPathTokenElement(const std::string &tokenName, size_t tokenType) : XPathElement(tokenName) {
  _tokenType = tokenType;
}

std::vector<ParseTree *> XPathTokenElement::evaluate(ParseTree *t) {
  // return all children of t that match nodeName
  std::vector<ParseTree *> nodes;
  for (auto *c : t->children) {
    if (antlrcpp::is<TerminalNode *>(c)) {
      TerminalNode *tnode = dynamic_cast<TerminalNode *>(c);
      if ((tnode->getSymbol()->getType() == _tokenType && !_invert) || (tnode->getSymbol()->getType() != _tokenType && _invert)) {
        nodes.push_back(tnode);
      }
    }
  }
  return nodes;
}