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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/eval/eval/value_type.h>
#include <vespa/eval/eval/aggr.h>
#include <vespa/eval/eval/interpreted_function.h>
#include <vespa/eval/eval/nested_loop.h>
#include <vespa/vespalib/util/small_vector.h>
namespace vespalib { class Stash; }
namespace vespalib::eval { struct ValueBuilderFactory; }
namespace vespalib::eval::instruction {
//-----------------------------------------------------------------------------
struct DenseReducePlan {
size_t in_size;
size_t out_size;
SmallVector<size_t> loop_cnt;
SmallVector<size_t> in_stride;
SmallVector<size_t> out_stride;
DenseReducePlan(const ValueType &type, const ValueType &res_type);
~DenseReducePlan();
template <typename F> void execute(size_t in_idx, const F &f) const {
run_nested_loop(in_idx, 0, loop_cnt, in_stride, out_stride, f);
}
};
struct SparseReducePlan {
size_t num_reduce_dims;
SmallVector<size_t> keep_dims;
bool should_forward_index() const;
SparseReducePlan(const ValueType &type, const ValueType &res_type);
~SparseReducePlan();
};
//-----------------------------------------------------------------------------
struct GenericReduce {
static InterpretedFunction::Instruction
make_instruction(const ValueType &result_type,
const ValueType &input_type, Aggr aggr,
const std::vector<vespalib::string> &dimensions,
const ValueBuilderFactory &factory, Stash &stash);
};
//-----------------------------------------------------------------------------
} // namespace
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