cpp/src/gandiva/basic_decimal_scalar.h

// Licensed to the Apache Software Foundation (ASF) under one
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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
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#pragma once

#include <cstdint>

#include "arrow/util/basic_decimal.h"
#include "arrow/util/decimal.h"

namespace gandiva {

using arrow::BasicDecimal128;

/// Represents a 128-bit decimal value along with its precision and scale.
class BasicDecimalScalar128 {
 public:
  constexpr BasicDecimalScalar128(int64_t high_bits, uint64_t low_bits, int32_t precision,
                                  int32_t scale)
      : value_(high_bits, low_bits), precision_(precision), scale_(scale) {}

  constexpr BasicDecimalScalar128(const BasicDecimal128& value, int32_t precision,
                                  int32_t scale)
      : value_(value), precision_(precision), scale_(scale) {}

  constexpr BasicDecimalScalar128(int32_t precision, int32_t scale)
      : precision_(precision), scale_(scale) {}

  int32_t scale() const { return scale_; }

  int32_t precision() const { return precision_; }

  const BasicDecimal128& value() const { return value_; }

 private:
  BasicDecimal128 value_;
  int32_t precision_;
  int32_t scale_;
};

inline bool operator==(const BasicDecimalScalar128& left,
                       const BasicDecimalScalar128& right) {
  return left.value() == right.value() && left.precision() == right.precision() &&
         left.scale() == right.scale();
}

inline BasicDecimalScalar128 operator-(const BasicDecimalScalar128& operand) {
  return BasicDecimalScalar128{-operand.value(), operand.precision(), operand.scale()};
}

}  // namespace gandiva