text: /**
   *    Copyright (C) 2017 MongoDB Inc.
   *
   *    This program is free software: you can redistribute it and/or  modify
   *    it under the terms of the GNU Affero General Public License, version 3,
   *    as published by the Free Software Foundation.
   *
   *    This program is distributed in the hope that it will be useful,
   *    but WITHOUT ANY WARRANTY; without even the implied warranty of
   *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *    GNU Affero General Public License for more details.
   *
   *    You should have received a copy of the GNU Affero General Public License
   *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
   *
   *    As a special exception, the copyright holders give permission to link the
   *    code of portions of this program with the OpenSSL library under certain
   *    conditions as described in each individual source file and distribute
   *    linked combinations including the program with the OpenSSL library. You
   *    must comply with the GNU Affero General Public License in all respects for
   *    all of the code used other than as permitted herein. If you modify file(s)
   *    with this exception, you may extend this exception to your version of the
   *    file(s), but you are not obligated to do so. If you do not wish to do so,
   *    delete this exception statement from your version. If you delete this
   *    exception statement from all source files in the program, then also delete
   *    it in the license file.
   */
  
  #include "mongo/platform/basic.h"
  
  #include "mongo/db/matcher/schema/expression_internal_schema_object_match.h"
  
  namespace mongo {
  
  constexpr StringData InternalSchemaObjectMatchExpression::kName;
  
  bool InternalSchemaObjectMatchExpression::matchesSingleElement(const BSONElement& elem,
                                                                 MatchDetails* details) const {
      if (elem.type() != BSONType::Object) {
          return false;
      }
      return _sub->matchesBSON(elem.Obj());
  }
  
  void InternalSchemaObjectMatchExpression::debugString(StringBuilder& debug, int level) const {
      _debugAddSpace(debug, level);
      debug << kName << "\n";
      _sub->debugString(debug, level + 1);
  }
  
  void InternalSchemaObjectMatchExpression::serialize(BSONObjBuilder* out) const {
      BSONObjBuilder objMatchBob(out->subobjStart(path()));
      BSONObjBuilder subBob(objMatchBob.subobjStart(kName));
      _sub->serialize(&subBob);
      subBob.doneFast();
      objMatchBob.doneFast();
  }
  
  bool InternalSchemaObjectMatchExpression::equivalent(const MatchExpression* other) const {
      if (matchType() != other->matchType()) {
          return false;
      }
  
      return _sub->equivalent(other->getChild(0));
  }
  
  std::unique_ptr<MatchExpression> InternalSchemaObjectMatchExpression::shallowClone() const {
      auto clone = stdx::make_unique<InternalSchemaObjectMatchExpression>();
      invariantOK(clone->init(_sub->shallowClone(), path()));
      if (getTag()) {
          clone->setTag(getTag()->clone());
      }
      return std::move(clone);
  }
  
  }  // namespace mongo
  