codeql-coding-standards/cpp/common/test/includes/standard-library/string_view at 27ca21db52c8a55bc4d79234915a1b925435a3b4 · github/codeql-coding-standards · GitHub

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#pragma once
#ifndef _GHLIBCPP_STRING_VIEW
#define _GHLIBCPP_STRING_VIEW

#include "stddef.h"
#include <empty.h>

namespace std {

template <typename CharT> class basic_string_view {
public:
  typedef CharT value_type;
  typedef const CharT *pointer;
  typedef const CharT *const_pointer;
  typedef const CharT &reference;
  typedef const CharT &const_reference;
  typedef const CharT *const_iterator;
  typedef const_iterator iterator;
  typedef size_t size_type;
  typedef ptrdiff_t difference_type;

  // Constructors
  basic_string_view() noexcept;
  basic_string_view(const basic_string_view &) noexcept = default;
  basic_string_view(const CharT *s, size_type count);
  basic_string_view(const CharT *s);

  // Assignment
  basic_string_view &operator=(const basic_string_view &) noexcept = default;

  // Element access
  const_reference operator[](size_type pos) const;
  const_reference at(size_type pos) const;
  const_reference front() const;
  const_reference back() const;
  const_pointer data() const noexcept;

  // Capacity
  size_type size() const noexcept;
  size_type length() const noexcept;
  size_type max_size() const noexcept;
  bool empty() const noexcept;

  // Modifiers
  void remove_prefix(size_type n);
  void remove_suffix(size_type n);
  void swap(basic_string_view &v) noexcept;

  // String operations
  size_type copy(CharT *dest, size_type count, size_type pos = 0) const;
  basic_string_view substr(size_type pos = 0, size_type len = npos) const;

  // Comparison
  int compare(basic_string_view v) const noexcept;
  int compare(size_type pos1, size_type n1, basic_string_view v) const;
  int compare(const CharT *s) const;

  // Search
  size_type find(basic_string_view v, size_type pos = 0) const noexcept;
  size_type find(CharT c, size_type pos = 0) const noexcept;
  size_type find(const CharT *s, size_type pos, size_type n) const;
  size_type find(const CharT *s, size_type pos = 0) const;

  // Constants
  static const size_type npos = static_cast<size_type>(-1);

private:
  const CharT *data_;
  size_type size_;
};

// Type aliases
typedef basic_string_view<char> string_view;
typedef basic_string_view<wchar_t> wstring_view;
typedef basic_string_view<char16_t> u16string_view;
typedef basic_string_view<char32_t> u32string_view;

inline namespace literals {
inline namespace string_view_literals {
// suffix for basic_string_view literals
constexpr string_view operator""sv(const char *str, size_t len) noexcept;
} // namespace string_view_literals
} // namespace literals

} // namespace std

#endif // _GHLIBCPP_STRING_VIEW