github-actions[bot] commented on code in PR #33491:
URL: https://github.com/apache/doris/pull/33491#discussion_r1559612678


##########
be/src/pipeline/exec/aggregation_sink_operator_helper.h:
##########
@@ -0,0 +1,274 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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.
+
+#pragma once
+
+#include <cstdint>
+#include <type_traits>
+
+#include "operator.h"
+#include "pipeline/exec/aggregation_operator_helper.h"
+#include "pipeline/pipeline_x/dependency.h"
+#include "pipeline/pipeline_x/operator.h"
+#include "runtime/block_spill_manager.h"
+#include "runtime/exec_env.h"
+#include "vec/exec/vaggregation_node.h"
+
+namespace doris {
+
+namespace pipeline {
+template <typename Derived, typename OperatorX>
+class AggSinkLocalStateHelper :  public AggLocalStateHelper<Derived, 
OperatorX> {
+public:
+    using AggLocalStateHelper<Derived, OperatorX>::_get_hash_table_size;
+    using AggLocalStateHelper<Derived, OperatorX>::_find_in_hash_table;
+    using AggLocalStateHelper<Derived, OperatorX>::_emplace_into_hash_table;
+    using AggLocalStateHelper<Derived, OperatorX>::_shared_state;
+    using AggLocalStateHelper<Derived, OperatorX>::_derived;
+    using AggLocalStateHelper<Derived, OperatorX>::_operator;
+    using AggLocalStateHelper<Derived, OperatorX>::_create_agg_status;
+    using AggLocalStateHelper<Derived, OperatorX>::_destroy_agg_status;
+    AggSinkLocalStateHelper(Derived * derived) : AggLocalStateHelper<Derived, 
OperatorX>(derived){}
+    ~AggSinkLocalStateHelper() = default;
+    Status _execute_without_key(vectorized::Block* block) {
+        DCHECK(_shared_state()->agg_data->without_key != nullptr);
+        SCOPED_TIMER(_derived()->_build_timer);
+        for (int i = 0; i < _shared_state()->aggregate_evaluators.size(); ++i) 
{
+            
RETURN_IF_ERROR(_shared_state()->aggregate_evaluators[i]->execute_single_add(
+                    block,
+                    _shared_state()->agg_data->without_key +
+                            _operator().offsets_of_aggregate_states[i],
+                    _shared_state()->agg_arena_pool.get()));
+        }
+        return Status::OK();
+    }
+    Status _execute_with_serialized_key(vectorized::Block* block) {
+        if (_derived()->_reach_limit) {
+            return _execute_with_serialized_key_helper<true>(block);
+        } else {
+            return _execute_with_serialized_key_helper<false>(block);
+        }
+    }
+    template <bool limit>
+    Status _execute_with_serialized_key_helper(vectorized::Block* block) {
+        SCOPED_TIMER(_derived()->_build_timer);
+        auto& _probe_expr_ctxs = _shared_state()->probe_expr_ctxs;
+        auto& _places = _derived()->_places;
+        auto& aggregate_evaluators = _shared_state()->aggregate_evaluators;
+        auto& agg_arena_pool = _shared_state()->agg_arena_pool;
+        DCHECK(!_probe_expr_ctxs.empty());
+
+        size_t key_size = _probe_expr_ctxs.size();
+        vectorized::ColumnRawPtrs key_columns(key_size);
+        {
+            SCOPED_TIMER(_derived()->_expr_timer);
+            for (size_t i = 0; i < key_size; ++i) {
+                int result_column_id = -1;
+                RETURN_IF_ERROR(_probe_expr_ctxs[i]->execute(block, 
&result_column_id));
+                block->get_by_position(result_column_id).column =
+                        block->get_by_position(result_column_id)
+                                .column->convert_to_full_column_if_const();
+                key_columns[i] = 
block->get_by_position(result_column_id).column.get();
+            }
+        }
+
+        int rows = block->rows();
+        if (_places.size() < rows) {
+            _places.resize(rows);
+        }
+
+        if constexpr (limit) {
+            _find_in_hash_table(_places.data(), key_columns, rows);
+
+            for (int i = 0; i < aggregate_evaluators.size(); ++i) {
+                
RETURN_IF_ERROR(aggregate_evaluators[i]->execute_batch_add_selected(
+                        block, _operator().offsets_of_aggregate_states[i], 
_places.data(),
+                        agg_arena_pool.get()));
+            }
+        } else {
+            _emplace_into_hash_table(_places.data(), key_columns, rows);
+
+            for (int i = 0; i < aggregate_evaluators.size(); ++i) {
+                RETURN_IF_ERROR(aggregate_evaluators[i]->execute_batch_add(
+                        block, _operator().offsets_of_aggregate_states[i], 
_places.data(),
+                        agg_arena_pool.get()));
+            }
+
+            if (_derived()->_should_limit_output) {
+                _derived()->_reach_limit = _get_hash_table_size() >= 
_operator()._limit;
+                if (_derived()->_reach_limit && 
_operator()._can_short_circuit) {
+                    _derived()->_dependency->set_ready_to_read();
+                    return Status::Error<ErrorCode::END_OF_FILE>("");
+                }
+            }
+        }
+
+        return Status::OK();
+    }
+    // We should call this function only at 1st phase.
+    // 1st phase: is_merge=true, only have one SlotRef.
+    // 2nd phase: is_merge=false, maybe have multiple exprs.
+    int _get_slot_column_id(const vectorized::AggFnEvaluator* evaluator) {
+        auto ctxs = evaluator->input_exprs_ctxs();
+        CHECK(ctxs.size() == 1 && ctxs[0]->root()->is_slot_ref())
+                << "input_exprs_ctxs is invalid, input_exprs_ctx[0]="
+                << ctxs[0]->root()->debug_string();
+        return ((vectorized::VSlotRef*)ctxs[0]->root().get())->column_id();
+    }
+
+    Status _merge_without_key(vectorized::Block* block) {
+        SCOPED_TIMER(_derived()->_merge_timer);
+        auto& agg_data = _shared_state()->agg_data;
+        auto& aggregate_evaluators = _shared_state()->aggregate_evaluators;
+        auto& agg_arena_pool = _shared_state()->agg_arena_pool;
+        DCHECK(agg_data->without_key != nullptr);
+        for (int i = 0; i < aggregate_evaluators.size(); ++i) {
+            if (aggregate_evaluators[i]->is_merge()) {
+                int col_id = _get_slot_column_id(aggregate_evaluators[i]);
+                auto column = block->get_by_position(col_id).column;
+                if (column->is_nullable()) {
+                    column = 
((vectorized::ColumnNullable*)column.get())->get_nested_column_ptr();
+                }
+
+                SCOPED_TIMER(_derived()->_deserialize_data_timer);
+                
aggregate_evaluators[i]->function()->deserialize_and_merge_from_column(
+                        agg_data->without_key + 
_operator().offsets_of_aggregate_states[i], *column,
+                        agg_arena_pool.get());
+            } else {
+                RETURN_IF_ERROR(aggregate_evaluators[i]->execute_single_add(
+                        block, agg_data->without_key + 
_operator().offsets_of_aggregate_states[i],
+                        agg_arena_pool.get()));
+            }
+        }
+        return Status::OK();
+    }
+
+    Status _merge_with_serialized_key(vectorized::Block* block) {
+        if (_derived()->_reach_limit) {
+            return _merge_with_serialized_key_helper<true, false>(block);
+        } else {
+            return _merge_with_serialized_key_helper<false, false>(block);
+        }
+    }
+
+    template <bool limit, bool for_spill>
+    Status _merge_with_serialized_key_helper(vectorized::Block* block) {

Review Comment:
   warning: function '_merge_with_serialized_key_helper' exceeds recommended 
size/complexity thresholds [readability-function-size]
   ```cpp
       Status _merge_with_serialized_key_helper(vectorized::Block* block) {
              ^
   ```
   <details>
   <summary>Additional context</summary>
   
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:168:** 101 lines 
including whitespace and comments (threshold 80)
   ```cpp
       Status _merge_with_serialized_key_helper(vectorized::Block* block) {
              ^
   ```
   
   </details>
   



##########
be/src/pipeline/exec/aggregation_sink_operator_helper.h:
##########
@@ -0,0 +1,274 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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.
+
+#pragma once
+
+#include <cstdint>
+#include <type_traits>
+
+#include "operator.h"
+#include "pipeline/exec/aggregation_operator_helper.h"
+#include "pipeline/pipeline_x/dependency.h"
+#include "pipeline/pipeline_x/operator.h"
+#include "runtime/block_spill_manager.h"
+#include "runtime/exec_env.h"
+#include "vec/exec/vaggregation_node.h"
+
+namespace doris {
+
+namespace pipeline {
+template <typename Derived, typename OperatorX>
+class AggSinkLocalStateHelper :  public AggLocalStateHelper<Derived, 
OperatorX> {
+public:
+    using AggLocalStateHelper<Derived, OperatorX>::_get_hash_table_size;
+    using AggLocalStateHelper<Derived, OperatorX>::_find_in_hash_table;
+    using AggLocalStateHelper<Derived, OperatorX>::_emplace_into_hash_table;
+    using AggLocalStateHelper<Derived, OperatorX>::_shared_state;
+    using AggLocalStateHelper<Derived, OperatorX>::_derived;
+    using AggLocalStateHelper<Derived, OperatorX>::_operator;
+    using AggLocalStateHelper<Derived, OperatorX>::_create_agg_status;
+    using AggLocalStateHelper<Derived, OperatorX>::_destroy_agg_status;
+    AggSinkLocalStateHelper(Derived * derived) : AggLocalStateHelper<Derived, 
OperatorX>(derived){}
+    ~AggSinkLocalStateHelper() = default;
+    Status _execute_without_key(vectorized::Block* block) {
+        DCHECK(_shared_state()->agg_data->without_key != nullptr);
+        SCOPED_TIMER(_derived()->_build_timer);
+        for (int i = 0; i < _shared_state()->aggregate_evaluators.size(); ++i) 
{
+            
RETURN_IF_ERROR(_shared_state()->aggregate_evaluators[i]->execute_single_add(
+                    block,
+                    _shared_state()->agg_data->without_key +
+                            _operator().offsets_of_aggregate_states[i],
+                    _shared_state()->agg_arena_pool.get()));
+        }
+        return Status::OK();
+    }
+    Status _execute_with_serialized_key(vectorized::Block* block) {
+        if (_derived()->_reach_limit) {
+            return _execute_with_serialized_key_helper<true>(block);
+        } else {
+            return _execute_with_serialized_key_helper<false>(block);
+        }
+    }
+    template <bool limit>
+    Status _execute_with_serialized_key_helper(vectorized::Block* block) {
+        SCOPED_TIMER(_derived()->_build_timer);
+        auto& _probe_expr_ctxs = _shared_state()->probe_expr_ctxs;
+        auto& _places = _derived()->_places;
+        auto& aggregate_evaluators = _shared_state()->aggregate_evaluators;
+        auto& agg_arena_pool = _shared_state()->agg_arena_pool;
+        DCHECK(!_probe_expr_ctxs.empty());
+
+        size_t key_size = _probe_expr_ctxs.size();
+        vectorized::ColumnRawPtrs key_columns(key_size);
+        {
+            SCOPED_TIMER(_derived()->_expr_timer);
+            for (size_t i = 0; i < key_size; ++i) {
+                int result_column_id = -1;
+                RETURN_IF_ERROR(_probe_expr_ctxs[i]->execute(block, 
&result_column_id));
+                block->get_by_position(result_column_id).column =
+                        block->get_by_position(result_column_id)
+                                .column->convert_to_full_column_if_const();
+                key_columns[i] = 
block->get_by_position(result_column_id).column.get();
+            }
+        }
+
+        int rows = block->rows();
+        if (_places.size() < rows) {
+            _places.resize(rows);
+        }
+
+        if constexpr (limit) {
+            _find_in_hash_table(_places.data(), key_columns, rows);
+
+            for (int i = 0; i < aggregate_evaluators.size(); ++i) {
+                
RETURN_IF_ERROR(aggregate_evaluators[i]->execute_batch_add_selected(
+                        block, _operator().offsets_of_aggregate_states[i], 
_places.data(),
+                        agg_arena_pool.get()));
+            }
+        } else {
+            _emplace_into_hash_table(_places.data(), key_columns, rows);
+
+            for (int i = 0; i < aggregate_evaluators.size(); ++i) {
+                RETURN_IF_ERROR(aggregate_evaluators[i]->execute_batch_add(
+                        block, _operator().offsets_of_aggregate_states[i], 
_places.data(),
+                        agg_arena_pool.get()));
+            }
+
+            if (_derived()->_should_limit_output) {
+                _derived()->_reach_limit = _get_hash_table_size() >= 
_operator()._limit;
+                if (_derived()->_reach_limit && 
_operator()._can_short_circuit) {
+                    _derived()->_dependency->set_ready_to_read();
+                    return Status::Error<ErrorCode::END_OF_FILE>("");
+                }
+            }
+        }
+
+        return Status::OK();
+    }
+    // We should call this function only at 1st phase.
+    // 1st phase: is_merge=true, only have one SlotRef.
+    // 2nd phase: is_merge=false, maybe have multiple exprs.
+    int _get_slot_column_id(const vectorized::AggFnEvaluator* evaluator) {
+        auto ctxs = evaluator->input_exprs_ctxs();
+        CHECK(ctxs.size() == 1 && ctxs[0]->root()->is_slot_ref())
+                << "input_exprs_ctxs is invalid, input_exprs_ctx[0]="
+                << ctxs[0]->root()->debug_string();
+        return ((vectorized::VSlotRef*)ctxs[0]->root().get())->column_id();
+    }
+
+    Status _merge_without_key(vectorized::Block* block) {
+        SCOPED_TIMER(_derived()->_merge_timer);
+        auto& agg_data = _shared_state()->agg_data;
+        auto& aggregate_evaluators = _shared_state()->aggregate_evaluators;
+        auto& agg_arena_pool = _shared_state()->agg_arena_pool;
+        DCHECK(agg_data->without_key != nullptr);
+        for (int i = 0; i < aggregate_evaluators.size(); ++i) {
+            if (aggregate_evaluators[i]->is_merge()) {
+                int col_id = _get_slot_column_id(aggregate_evaluators[i]);
+                auto column = block->get_by_position(col_id).column;
+                if (column->is_nullable()) {
+                    column = 
((vectorized::ColumnNullable*)column.get())->get_nested_column_ptr();
+                }
+
+                SCOPED_TIMER(_derived()->_deserialize_data_timer);
+                
aggregate_evaluators[i]->function()->deserialize_and_merge_from_column(
+                        agg_data->without_key + 
_operator().offsets_of_aggregate_states[i], *column,
+                        agg_arena_pool.get());
+            } else {
+                RETURN_IF_ERROR(aggregate_evaluators[i]->execute_single_add(
+                        block, agg_data->without_key + 
_operator().offsets_of_aggregate_states[i],
+                        agg_arena_pool.get()));
+            }
+        }
+        return Status::OK();
+    }
+
+    Status _merge_with_serialized_key(vectorized::Block* block) {
+        if (_derived()->_reach_limit) {
+            return _merge_with_serialized_key_helper<true, false>(block);
+        } else {
+            return _merge_with_serialized_key_helper<false, false>(block);
+        }
+    }
+
+    template <bool limit, bool for_spill>
+    Status _merge_with_serialized_key_helper(vectorized::Block* block) {

Review Comment:
   warning: function '_merge_with_serialized_key_helper' has cognitive 
complexity of 68 (threshold 50) [readability-function-cognitive-complexity]
   ```cpp
       Status _merge_with_serialized_key_helper(vectorized::Block* block) {
              ^
   ```
   <details>
   <summary>Additional context</summary>
   
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:179:** +1, 
including nesting penalty of 0, nesting level increased to 1
   ```cpp
           for (size_t i = 0; i < key_size; ++i) {
           ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:180:** +2, 
including nesting penalty of 1, nesting level increased to 2
   ```cpp
               if constexpr (for_spill) {
               ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:182:** +1, nesting 
level increased to 2
   ```cpp
               } else {
                 ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:184:** +3, 
including nesting penalty of 2, nesting level increased to 3
   ```cpp
                   RETURN_IF_ERROR(probe_expr_ctxs[i]->execute(block, 
&result_column_id));
                   ^
   ```
   **be/src/common/status.h:541:** expanded from macro 'RETURN_IF_ERROR'
   ```cpp
       do {                                \
       ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:184:** +4, 
including nesting penalty of 3, nesting level increased to 4
   ```cpp
                   RETURN_IF_ERROR(probe_expr_ctxs[i]->execute(block, 
&result_column_id));
                   ^
   ```
   **be/src/common/status.h:543:** expanded from macro 'RETURN_IF_ERROR'
   ```cpp
           if (UNLIKELY(!_status_.ok())) { \
           ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:191:** +1, 
including nesting penalty of 0, nesting level increased to 1
   ```cpp
           if (_places.size() < rows) {
           ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:195:** +1, 
including nesting penalty of 0, nesting level increased to 1
   ```cpp
           if constexpr (limit) {
           ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:198:** +2, 
including nesting penalty of 1, nesting level increased to 2
   ```cpp
               for (int i = 0; i < aggregate_evaluators.size(); ++i) {
               ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:199:** +3, 
including nesting penalty of 2, nesting level increased to 3
   ```cpp
                   if (aggregate_evaluators[i]->is_merge()) {
                   ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:202:** +4, 
including nesting penalty of 3, nesting level increased to 4
   ```cpp
                       if (column->is_nullable()) {
                       ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:208:** +4, 
including nesting penalty of 3, nesting level increased to 4
   ```cpp
                       if (_deserialize_buffer.size() < buffer_size) {
                       ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:220:** +1, nesting 
level increased to 3
   ```cpp
                   } else {
                     ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:221:** +4, 
including nesting penalty of 3, nesting level increased to 4
   ```cpp
                       
RETURN_IF_ERROR(aggregate_evaluators[i]->execute_batch_add_selected(
                       ^
   ```
   **be/src/common/status.h:541:** expanded from macro 'RETURN_IF_ERROR'
   ```cpp
       do {                                \
       ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:221:** +5, 
including nesting penalty of 4, nesting level increased to 5
   ```cpp
                       
RETURN_IF_ERROR(aggregate_evaluators[i]->execute_batch_add_selected(
                       ^
   ```
   **be/src/common/status.h:543:** expanded from macro 'RETURN_IF_ERROR'
   ```cpp
           if (UNLIKELY(!_status_.ok())) { \
           ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:226:** +1, nesting 
level increased to 1
   ```cpp
           } else {
             ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:229:** +2, 
including nesting penalty of 1, nesting level increased to 2
   ```cpp
               for (int i = 0; i < aggregate_evaluators.size(); ++i) {
               ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:230:** +3, 
including nesting penalty of 2, nesting level increased to 3
   ```cpp
                   if (aggregate_evaluators[i]->is_merge() || for_spill) {
                   ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:230:** +1
   ```cpp
                   if (aggregate_evaluators[i]->is_merge() || for_spill) {
                                                           ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:232:** +4, 
including nesting penalty of 3, nesting level increased to 4
   ```cpp
                       if constexpr (for_spill) {
                       ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:234:** +1, nesting 
level increased to 4
   ```cpp
                       } else {
                         ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:238:** +4, 
including nesting penalty of 3, nesting level increased to 4
   ```cpp
                       if (column->is_nullable()) {
                       ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:244:** +4, 
including nesting penalty of 3, nesting level increased to 4
   ```cpp
                       if (_deserialize_buffer.size() < buffer_size) {
                       ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:256:** +1, nesting 
level increased to 3
   ```cpp
                   } else {
                     ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:257:** +4, 
including nesting penalty of 3, nesting level increased to 4
   ```cpp
                       
RETURN_IF_ERROR(aggregate_evaluators[i]->execute_batch_add(
                       ^
   ```
   **be/src/common/status.h:541:** expanded from macro 'RETURN_IF_ERROR'
   ```cpp
       do {                                \
       ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:257:** +5, 
including nesting penalty of 4, nesting level increased to 5
   ```cpp
                       
RETURN_IF_ERROR(aggregate_evaluators[i]->execute_batch_add(
                       ^
   ```
   **be/src/common/status.h:543:** expanded from macro 'RETURN_IF_ERROR'
   ```cpp
           if (UNLIKELY(!_status_.ok())) { \
           ^
   ```
   **be/src/pipeline/exec/aggregation_sink_operator_helper.h:263:** +2, 
including nesting penalty of 1, nesting level increased to 2
   ```cpp
               if (_derived()->_should_limit_output) {
               ^
   ```
   
   </details>
   



##########
be/src/pipeline/exec/aggregation_source_operator_helper.h:
##########
@@ -0,0 +1,45 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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.
+#pragma once
+
+#include <stdint.h>

Review Comment:
   warning: inclusion of deprecated C++ header 'stdint.h'; consider using 
'cstdint' instead [modernize-deprecated-headers]
   
   ```suggestion
   #include <cstdint>
   ```
   



-- 
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