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// Copyright (C) 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef ICING_INDEX_ITERATOR_DOC_HIT_INFO_ITERATOR_ALL_DOCUMENT_ID_H_
#define ICING_INDEX_ITERATOR_DOC_HIT_INFO_ITERATOR_ALL_DOCUMENT_ID_H_
#include <cstdint>
#include <string>
#include "icing/text_classifier/lib3/utils/base/status.h"
#include "icing/absl_ports/str_cat.h"
#include "icing/index/iterator/doc-hit-info-iterator.h"
#include "icing/legacy/core/icing-string-util.h"
#include "icing/store/document-id.h"
namespace icing {
namespace lib {
// Iterator for all DocumentIds in range [0, document_id_limit_]: 0 inclusive,
// document_id_limit_ inclusive. Returns DocumentIds in descending order.
class DocHitInfoIteratorAllDocumentId : public DocHitInfoIterator {
public:
explicit DocHitInfoIteratorAllDocumentId(DocumentId document_id_limit);
libtextclassifier3::Status Advance() override;
libtextclassifier3::StatusOr<TrimmedNode> TrimRightMostNode() && override;
void MapChildren(const ChildrenMapper& mapper) override {}
CallStats GetCallStats() const override {
return CallStats(
/*num_leaf_advance_calls_lite_index_in=*/0,
/*num_leaf_advance_calls_main_index_in=*/0,
/*num_leaf_advance_calls_integer_index_in=*/0,
/*num_leaf_advance_calls_no_index_in=*/document_id_limit_ -
current_document_id_,
/*num_blocks_inspected_in=*/0);
}
std::string ToString() const override {
return IcingStringUtil::StringPrintf("(ALL document_id_limit:%d)",
document_id_limit_);
}
private:
const DocumentId document_id_limit_;
// An internal value for the iterator to track the current doc id.
DocumentId current_document_id_;
};
} // namespace lib
} // namespace icing
#endif // ICING_INDEX_ITERATOR_DOC_HIT_INFO_ITERATOR_ALL_DOCUMENT_ID_H_
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