FM / util

/usr/local/lib64/python3.6/site-packages/torch/include/c10/util/

/usr/local/lib64/python3.6/site-packages/torch/include/c10/util

Name	Size	Mode	Actions
accumulate.h	4205	0644	edit dl rm
AlignOf.h	4835	0644	edit dl rm
Array.h	11354	0644	edit dl rm
ArrayRef.h	9058	0644	edit dl rm
Backtrace.h	364	0644	edit dl rm
BFloat16-inl.h	9222	0644	edit dl rm
BFloat16-math.h	5217	0644	edit dl rm
BFloat16.h	2372	0644	edit dl rm
Bitset.h	3414	0644	edit dl rm
C++17.h	13329	0644	edit dl rm
complex.h	17542	0644	edit dl rm
complex_math.h	10902	0644	edit dl rm
complex_utils.h	958	0644	edit dl rm
ConstexprCrc.h	6633	0644	edit dl rm
copysign.h	866	0644	edit dl rm
DeadlockDetection.h	1920	0644	edit dl rm
Deprecated.h	3579	0644	edit dl rm
either.h	6423	0644	edit dl rm
env.h	835	0644	edit dl rm
Exception.h	24723	0644	edit dl rm
ExclusivelyOwned.h	4759	0644	edit dl rm
Flags.h	10056	0644	edit dl rm
flat_hash_map.h	61655	0644	edit dl rm
FunctionRef.h	2301	0644	edit dl rm
Half-inl.h	8674	0644	edit dl rm
Half.h	18965	0644	edit dl rm
hash.h	5084	0644	edit dl rm
IdWrapper.h	2348	0644	edit dl rm
intrusive_ptr.h	35563	0644	edit dl rm
in_place.h	350	0644	edit dl rm
irange.h	2679	0644	edit dl rm
LeftRight.h	6016	0644	edit dl rm
llvmMathExtras.h	29168	0644	edit dl rm
Logging.h	11256	0644	edit dl rm
logging_is_google_glog.h	2031	0644	edit dl rm
logging_is_not_google_glog.h	8271	0644	edit dl rm
MathConstants.h	858	0644	edit dl rm
math_compat.h	7296	0644	edit dl rm
MaybeOwned.h	6689	0644	edit dl rm
Metaprogramming.h	15288	0644	edit dl rm
numa.h	696	0644	edit dl rm
Optional.h	35592	0644	edit dl rm
order_preserving_flat_hash_map.h	65482	0644	edit dl rm
overloaded.h	709	0644	edit dl rm
python_stub.h	56	0644	edit dl rm
qint8.h	472	0644	edit dl rm
qint32.h	319	0644	edit dl rm
quint4x2.h	366	0644	edit dl rm
quint8.h	320	0644	edit dl rm
Registry.h	12242	0644	edit dl rm
reverse_iterator.h	8796	0644	edit dl rm
ScopeExit.h	1345	0644	edit dl rm
signal_handler.h	3154	0644	edit dl rm
SmallBuffer.h	1243	0644	edit dl rm
SmallVector.h	34456	0644	edit dl rm
sparse_bitset.h	26511	0644	edit dl rm
StringUtil.h	4538	0644	edit dl rm
string_utils.h	3989	0644	edit dl rm
string_view.h	20189	0644	edit dl rm
tempfile.h	6029	0644	edit dl rm
ThreadLocal.h	3883	0644	edit dl rm
ThreadLocalDebugInfo.h	2603	0644	edit dl rm
thread_name.h	148	0644	edit dl rm
Type.h	607	0644	edit dl rm
TypeCast.h	6972	0644	edit dl rm
typeid.h	18793	0644	edit dl rm
TypeIndex.h	5251	0644	edit dl rm
TypeList.h	16901	0644	edit dl rm
TypeTraits.h	5368	0644	edit dl rm
Unicode.h	295	0644	edit dl rm
UniqueVoidPtr.h	4117	0644	edit dl rm
Unroll.h	667	0644	edit dl rm
variant.h	95182	0644	edit dl rm
win32-headers.h	858	0644	edit dl rm

Edit: /usr/local/lib64/python3.6/site-packages/torch/include/c10/util/ArrayRef.h (9058B)

//===--- ArrayRef.h - Array Reference Wrapper -------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// ATen: modified from llvm::ArrayRef.
// removed llvm-specific functionality
// removed some implicit const -> non-const conversions that rely on
// complicated std::enable_if meta-programming
// removed a bunch of slice variants for simplicity...

#pragma once

#include <c10/util/C++17.h>
#include <c10/util/Deprecated.h>
#include <c10/util/Exception.h>
#include <c10/util/SmallVector.h>

#include <array>
#include <iterator>
#include <vector>

namespace c10 {

/// ArrayRef - Represent a constant reference to an array (0 or more elements
/// consecutively in memory), i.e. a start pointer and a length.  It allows
/// various APIs to take consecutive elements easily and conveniently.
///
/// This class does not own the underlying data, it is expected to be used in
/// situations where the data resides in some other buffer, whose lifetime
/// extends past that of the ArrayRef. For this reason, it is not in general
/// safe to store an ArrayRef.
///
/// This is intended to be trivially copyable, so it should be passed by
/// value.
template <typename T>
class ArrayRef final {
 public:
  using iterator = const T*;
  using const_iterator = const T*;
  using size_type = size_t;
  using value_type = T;

using reverse_iterator = std::reverse_iterator<iterator>;

private:
  /// The start of the array, in an external buffer.
  const T* Data;

/// The number of elements.
  size_type Length;

void debugCheckNullptrInvariant() {
    TORCH_INTERNAL_ASSERT_DEBUG_ONLY(
        Data != nullptr || Length == 0,
        "created ArrayRef with nullptr and non-zero length! c10::optional relies on this being illegal");
  }

public:
  /// @name Constructors
  /// @{

/// Construct an empty ArrayRef.
  /* implicit */ constexpr ArrayRef() : Data(nullptr), Length(0) {}

/// Construct an ArrayRef from a single element.
  // TODO Make this explicit
  constexpr ArrayRef(const T& OneElt) : Data(&OneElt), Length(1) {}

/// Construct an ArrayRef from a pointer and length.
  C10_HOST_CONSTEXPR_EXCEPT_WIN_CUDA ArrayRef(const T* data, size_t length)
      : Data(data), Length(length) {
    debugCheckNullptrInvariant();
  }

/// Construct an ArrayRef from a range.
  C10_HOST_CONSTEXPR_EXCEPT_WIN_CUDA ArrayRef(const T* begin, const T* end)
      : Data(begin), Length(end - begin) {
    debugCheckNullptrInvariant();
  }

/// Construct an ArrayRef from a SmallVector. This is templated in order to
  /// avoid instantiating SmallVectorTemplateCommon<T> whenever we
  /// copy-construct an ArrayRef.
  template <typename U>
  /* implicit */ ArrayRef(const SmallVectorTemplateCommon<T, U>& Vec)
      : Data(Vec.data()), Length(Vec.size()) {
    debugCheckNullptrInvariant();
  }

/// Construct an ArrayRef from a generic Container.
  template <
      typename Container,
      typename = std::enable_if_t<std::is_same<
          std::remove_const_t<decltype(std::declval<Container>().data())>,
          T*>::value>>
  /* implicit */ ArrayRef(const Container& container)
      : Data(container.data()), Length(container.size()) {
    debugCheckNullptrInvariant();
  }

/// Construct an ArrayRef from a std::vector.
  // The enable_if stuff here makes sure that this isn't used for
  // std::vector<bool>, because ArrayRef can't work on a std::vector<bool>
  // bitfield.
  template <typename A>
  /* implicit */ ArrayRef(const std::vector<T, A>& Vec)
      : Data(Vec.data()), Length(Vec.size()) {
    static_assert(
        !std::is_same<T, bool>::value,
        "ArrayRef<bool> cannot be constructed from a std::vector<bool> bitfield.");
  }

/// Construct an ArrayRef from a std::array
  template <size_t N>
  /* implicit */ constexpr ArrayRef(const std::array<T, N>& Arr)
      : Data(Arr.data()), Length(N) {}

/// Construct an ArrayRef from a C array.
  template <size_t N>
  /* implicit */ constexpr ArrayRef(const T (&Arr)[N]) : Data(Arr), Length(N) {}

/// Construct an ArrayRef from a std::initializer_list.
  /* implicit */ constexpr ArrayRef(const std::initializer_list<T>& Vec)
      : Data(
            std::begin(Vec) == std::end(Vec) ? static_cast<T*>(nullptr)
                                             : std::begin(Vec)),
        Length(Vec.size()) {}

/// @}
  /// @name Simple Operations
  /// @{

constexpr iterator begin() const {
    return Data;
  }
  constexpr iterator end() const {
    return Data + Length;
  }

// These are actually the same as iterator, since ArrayRef only
  // gives you const iterators.
  constexpr const_iterator cbegin() const {
    return Data;
  }
  constexpr const_iterator cend() const {
    return Data + Length;
  }

constexpr reverse_iterator rbegin() const {
    return reverse_iterator(end());
  }
  constexpr reverse_iterator rend() const {
    return reverse_iterator(begin());
  }

/// empty - Check if the array is empty.
  constexpr bool empty() const {
    return Length == 0;
  }

constexpr const T* data() const {
    return Data;
  }

/// size - Get the array size.
  constexpr size_t size() const {
    return Length;
  }

/// front - Get the first element.
  C10_HOST_CONSTEXPR_EXCEPT_WIN_CUDA const T& front() const {
    TORCH_CHECK(
        !empty(), "ArrayRef: attempted to access front() of empty list");
    return Data[0];
  }

/// back - Get the last element.
  C10_HOST_CONSTEXPR_EXCEPT_WIN_CUDA const T& back() const {
    TORCH_CHECK(!empty(), "ArrayRef: attempted to access back() of empty list");
    return Data[Length - 1];
  }

/// equals - Check for element-wise equality.
  constexpr bool equals(ArrayRef RHS) const {
    return Length == RHS.Length && std::equal(begin(), end(), RHS.begin());
  }

/// slice(n, m) - Take M elements of the array starting at element N
  C10_HOST_CONSTEXPR_EXCEPT_WIN_CUDA ArrayRef<T> slice(size_t N, size_t M)
      const {
    TORCH_CHECK(
        N + M <= size(),
        "ArrayRef: invalid slice, N = ",
        N,
        "; M = ",
        M,
        "; size = ",
        size());
    return ArrayRef<T>(data() + N, M);
  }

/// slice(n) - Chop off the first N elements of the array.
  constexpr ArrayRef<T> slice(size_t N) const {
    return slice(N, size() - N);
  }

/// @}
  /// @name Operator Overloads
  /// @{
  constexpr const T& operator[](size_t Index) const {
    return Data[Index];
  }

/// Vector compatibility
  C10_HOST_CONSTEXPR_EXCEPT_WIN_CUDA const T& at(size_t Index) const {
    TORCH_CHECK(
        Index < Length,
        "ArrayRef: invalid index Index = ",
        Index,
        "; Length = ",
        Length);
    return Data[Index];
  }

/// Disallow accidental assignment from a temporary.
  ///
  /// The declaration here is extra complicated so that "arrayRef = {}"
  /// continues to select the move assignment operator.
  template <typename U>
  typename std::enable_if<std::is_same<U, T>::value, ArrayRef<T>>::type&
  operator=(U&& Temporary) = delete;

/// @}
  /// @name Expensive Operations
  /// @{
  std::vector<T> vec() const {
    return std::vector<T>(Data, Data + Length);
  }

/// @}
};

template <typename T>
std::ostream& operator<<(std::ostream& out, ArrayRef<T> list) {
  int i = 0;
  out << "[";
  for (auto e : list) {
    if (i++ > 0)
      out << ", ";
    out << e;
  }
  out << "]";
  return out;
}

// WARNING: Template instantiation will NOT be willing to do an implicit
// conversions to get you to an c10::ArrayRef, which is why we need so
// many overloads.

template <typename T>
bool operator==(c10::ArrayRef<T> a1, c10::ArrayRef<T> a2) {
  return a1.equals(a2);
}

template <typename T>
bool operator!=(c10::ArrayRef<T> a1, c10::ArrayRef<T> a2) {
  return !a1.equals(a2);
}

template <typename T>
bool operator==(const std::vector<T>& a1, c10::ArrayRef<T> a2) {
  return c10::ArrayRef<T>(a1).equals(a2);
}

template <typename T>
bool operator!=(const std::vector<T>& a1, c10::ArrayRef<T> a2) {
  return !c10::ArrayRef<T>(a1).equals(a2);
}

template <typename T>
bool operator==(c10::ArrayRef<T> a1, const std::vector<T>& a2) {
  return a1.equals(c10::ArrayRef<T>(a2));
}

template <typename T>
bool operator!=(c10::ArrayRef<T> a1, const std::vector<T>& a2) {
  return !a1.equals(c10::ArrayRef<T>(a2));
}

using IntArrayRef = ArrayRef<int64_t>;

// This alias is deprecated because it doesn't make ownership
// semantics obvious.  Use IntArrayRef instead!
C10_DEFINE_DEPRECATED_USING(IntList, ArrayRef<int64_t>)

} // namespace c10

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