FM / util

/usr/local/lib64/python3.6/site-packages/pyarrow/include/arrow/util/

/usr/local/lib64/python3.6/site-packages/pyarrow/include/arrow/util

Name	Size	Mode	Actions
algorithm.h	1229	0644	edit dl rm
aligned_storage.h	4302	0644	edit dl rm
align_util.h	2636	0644	edit dl rm
async_generator.h	64088	0644	edit dl rm
async_util.h	9633	0644	edit dl rm
atomic_shared_ptr.h	3640	0644	edit dl rm
base64.h	1098	0644	edit dl rm
basic_decimal.h	20334	0644	edit dl rm
benchmark_util.h	4584	0644	edit dl rm
bitmap.h	17463	0644	edit dl rm
bitmap_builders.h	1563	0644	edit dl rm
bitmap_generate.h	3563	0644	edit dl rm
bitmap_ops.h	9084	0644	edit dl rm
bitmap_reader.h	8347	0644	edit dl rm
bitmap_visit.h	3460	0644	edit dl rm
bitmap_writer.h	9360	0644	edit dl rm
bitset_stack.h	2789	0644	edit dl rm
bit_block_counter.h	19141	0644	edit dl rm
bit_run_reader.h	16599	0644	edit dl rm
bit_stream_utils.h	16986	0644	edit dl rm
bit_util.h	11568	0644	edit dl rm
bpacking.h	1175	0644	edit dl rm
bpacking64_default.h	195934	0644	edit dl rm
bpacking_avx2.h	1009	0644	edit dl rm
bpacking_avx512.h	1011	0644	edit dl rm
bpacking_default.h	103232	0644	edit dl rm
bpacking_neon.h	1009	0644	edit dl rm
bpacking_simd128_generated.h	98529	0644	edit dl rm
bpacking_simd256_generated.h	77475	0644	edit dl rm
bpacking_simd512_generated.h	67081	0644	edit dl rm
byte_stream_split.h	28784	0644	edit dl rm
cancel.h	2911	0644	edit dl rm
checked_cast.h	2076	0644	edit dl rm
compare.h	1981	0644	edit dl rm
compression.h	7367	0644	edit dl rm
concurrent_map.h	1775	0644	edit dl rm
config.h	1659	0644	edit dl rm
converter.h	14657	0644	edit dl rm
counting_semaphore.h	2251	0644	edit dl rm
cpu_info.h	4724	0644	edit dl rm
decimal.h	11687	0644	edit dl rm
delimiting.h	7335	0644	edit dl rm
dispatch.h	3235	0644	edit dl rm
double_conversion.h	1195	0644	edit dl rm
endian.h	8071	0644	edit dl rm
formatting.h	20612	0644	edit dl rm
functional.h	5612	0644	edit dl rm
future.h	36168	0644	edit dl rm
future_iterator.h	2517	0644	edit dl rm
hashing.h	30633	0644	edit dl rm
hash_util.h	1914	0644	edit dl rm
int_util.h	4284	0644	edit dl rm
io_util.h	10326	0644	edit dl rm
iterator.h	18123	0644	edit dl rm
key_value_metadata.h	3579	0644	edit dl rm
launder.h	1051	0644	edit dl rm
logging.h	9338	0644	edit dl rm
macros.h	7349	0644	edit dl rm
make_unique.h	1475	0644	edit dl rm
map.h	2476	0644	edit dl rm
math_constants.h	1106	0644	edit dl rm
memory.h	1566	0644	edit dl rm
mutex.h	1833	0644	edit dl rm
optional.h	1174	0644	edit dl rm
parallel.h	3616	0644	edit dl rm
pcg_random.h	1146	0644	edit dl rm
print.h	1725	0644	edit dl rm
queue.h	1017	0644	edit dl rm
range.h	4834	0644	edit dl rm
rle_encoding.h	31029	0644	edit dl rm
simd.h	1333	0644	edit dl rm
small_vector.h	14660	0644	edit dl rm
sort.h	2466	0644	edit dl rm
spaced.h	3567	0644	edit dl rm
stopwatch.h	1401	0644	edit dl rm
string.h	2570	0644	edit dl rm
string_builder.h	2446	0644	edit dl rm
string_view.h	1269	0644	edit dl rm
task_group.h	4362	0644	edit dl rm
tdigest.h	3052	0644	edit dl rm
test_common.h	2837	0644	edit dl rm
thread_pool.h	15338	0644	edit dl rm
time.h	2988	0644	edit dl rm
trie.h	7157	0644	edit dl rm
type_fwd.h	1409	0644	edit dl rm
type_traits.h	2894	0644	edit dl rm
ubsan.h	2777	0644	edit dl rm
unreachable.h	926	0644	edit dl rm
uri.h	3297	0644	edit dl rm
utf8.h	18780	0644	edit dl rm
value_parsing.h	27056	0644	edit dl rm
variant.h	13728	0644	edit dl rm
vector.h	5665	0644	edit dl rm
visibility.h	1463	0644	edit dl rm
windows_compatibility.h	1260	0644	edit dl rm
windows_fixup.h	1379	0644	edit dl rm

Edit: /usr/local/lib64/python3.6/site-packages/pyarrow/include/arrow/util/functional.h (5612B)

// 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 <memory>
#include <tuple>
#include <type_traits>

#include "arrow/result.h"
#include "arrow/util/macros.h"

namespace arrow {
namespace internal {

struct Empty {
  static Result<Empty> ToResult(Status s) {
    if (ARROW_PREDICT_TRUE(s.ok())) {
      return Empty{};
    }
    return s;
  }
};

/// Helper struct for examining lambdas and other callables.
/// TODO(ARROW-12655) support function pointers
struct call_traits {
 public:
  template <typename R, typename... A>
  static std::false_type is_overloaded_impl(R(A...));

template <typename F>
  static std::false_type is_overloaded_impl(decltype(&F::operator())*);

template <typename F>
  static std::true_type is_overloaded_impl(...);

template <typename F, typename R, typename... A>
  static R return_type_impl(R (F::*)(A...));

template <typename F, typename R, typename... A>
  static R return_type_impl(R (F::*)(A...) const);

template <std::size_t I, typename F, typename R, typename... A>
  static typename std::tuple_element<I, std::tuple<A...>>::type argument_type_impl(
      R (F::*)(A...));

template <std::size_t I, typename F, typename R, typename... A>
  static typename std::tuple_element<I, std::tuple<A...>>::type argument_type_impl(
      R (F::*)(A...) const);

template <std::size_t I, typename F, typename R, typename... A>
  static typename std::tuple_element<I, std::tuple<A...>>::type argument_type_impl(
      R (F::*)(A...) &&);

template <typename F, typename R, typename... A>
  static std::integral_constant<int, sizeof...(A)> argument_count_impl(R (F::*)(A...));

template <typename F, typename R, typename... A>
  static std::integral_constant<int, sizeof...(A)> argument_count_impl(R (F::*)(A...)
                                                                           const);

template <typename F, typename R, typename... A>
  static std::integral_constant<int, sizeof...(A)> argument_count_impl(R (F::*)(A...) &&);

/// bool constant indicating whether F is a callable with more than one possible
  /// signature. Will be true_type for objects which define multiple operator() or which
  /// define a template operator()
  template <typename F>
  using is_overloaded =
      decltype(is_overloaded_impl<typename std::decay<F>::type>(NULLPTR));

template <typename F, typename T = void>
  using enable_if_overloaded = typename std::enable_if<is_overloaded<F>::value, T>::type;

template <typename F, typename T = void>
  using disable_if_overloaded =
      typename std::enable_if<!is_overloaded<F>::value, T>::type;

/// If F is not overloaded, the argument types of its call operator can be
  /// extracted via call_traits::argument_type<Index, F>
  template <std::size_t I, typename F>
  using argument_type = decltype(argument_type_impl<I>(&std::decay<F>::type::operator()));

template <typename F>
  using argument_count = decltype(argument_count_impl(&std::decay<F>::type::operator()));

template <typename F>
  using return_type = decltype(return_type_impl(&std::decay<F>::type::operator()));

template <typename F, typename T, typename RT = T>
  using enable_if_return =
      typename std::enable_if<std::is_same<return_type<F>, T>::value, RT>;

template <typename T, typename R = void>
  using enable_if_empty = typename std::enable_if<std::is_same<T, Empty>::value, R>::type;

template <typename T, typename R = void>
  using enable_if_not_empty =
      typename std::enable_if<!std::is_same<T, Empty>::value, R>::type;
};

/// A type erased callable object which may only be invoked once.
/// It can be constructed from any lambda which matches the provided call signature.
/// Invoking it results in destruction of the lambda, freeing any state/references
/// immediately. Invoking a default constructed FnOnce or one which has already been
/// invoked will segfault.
template <typename Signature>
class FnOnce;

template <typename R, typename... A>
class FnOnce<R(A...)> {
 public:
  FnOnce() = default;

template <typename Fn,
            typename = typename std::enable_if<std::is_convertible<
                decltype(std::declval<Fn&&>()(std::declval<A>()...)), R>::value>::type>
  FnOnce(Fn fn) : impl_(new FnImpl<Fn>(std::move(fn))) {  // NOLINT runtime/explicit
  }

explicit operator bool() const { return impl_ != NULLPTR; }

R operator()(A... a) && {
    auto bye = std::move(impl_);
    return bye->invoke(std::forward<A&&>(a)...);
  }

private:
  struct Impl {
    virtual ~Impl() = default;
    virtual R invoke(A&&... a) = 0;
  };

template <typename Fn>
  struct FnImpl : Impl {
    explicit FnImpl(Fn fn) : fn_(std::move(fn)) {}
    R invoke(A&&... a) override { return std::move(fn_)(std::forward<A&&>(a)...); }
    Fn fn_;
  };

std::unique_ptr<Impl> impl_;
};

}  // namespace internal
}  // namespace arrow

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