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#include <libcxx-simulators-common/compressed_pair.h>
#include <climits>
#include <memory>
#include <type_traits>
#if REVISION == 0
// Pre-c3d0205ee771 layout.
#define SUBCLASS_PADDING
#endif
#if REVISION <= 1
// Pre-D123580 layout.
#define BITMASKS
#endif
#if REVISION <= 2
// Pre-D125496 layout.
#define SHORT_UNION
#endif
#if REVISION == 3
// Pre-D128285 layout.
#define PACKED_ANON_STRUCT
#endif
#if REVISION <= 4
// Pre-2a1ef74 layout.
#define NON_STANDARD_PADDING
#endif
// REVISION == 5: current layout
#ifdef PACKED_ANON_STRUCT
#define BEGIN_PACKED_ANON_STRUCT struct __attribute__((packed)) {
#define END_PACKED_ANON_STRUCT };
#else
#define BEGIN_PACKED_ANON_STRUCT
#define END_PACKED_ANON_STRUCT
#endif
namespace std {
namespace __lldb {
#ifdef NON_STANDARD_PADDING
#if defined(ALTERNATE_LAYOUT) && defined(SUBCLASS_PADDING)
template <class _CharT, size_t = sizeof(_CharT)> struct __padding {
unsigned char __xx[sizeof(_CharT) - 1];
};
template <class _CharT> struct __padding<_CharT, 1> {};
#endif
#else // !NON_STANDARD_PADDING
template <size_t _PaddingSize> struct __padding {
char __padding_[_PaddingSize];
};
template <> struct __padding<0> {};
#endif
template <class _CharT, class _Traits, class _Allocator> class basic_string {
public:
typedef _CharT value_type;
typedef _Allocator allocator_type;
typedef allocator_traits<allocator_type> __alloc_traits;
typedef typename __alloc_traits::size_type size_type;
typedef typename __alloc_traits::pointer pointer;
#ifdef ALTERNATE_LAYOUT
struct __long {
pointer __data_;
size_type __size_;
#ifdef BITMASKS
size_type __cap_;
#else
size_type __cap_ : sizeof(size_type) * CHAR_BIT - 1;
size_type __is_long_ : 1;
#endif
};
enum {
__min_cap = (sizeof(__long) - 1) / sizeof(value_type) > 2
? (sizeof(__long) - 1) / sizeof(value_type)
: 2
};
struct __short {
value_type __data_[__min_cap];
#ifdef SUBCLASS_PADDING
struct : __padding<value_type> {
unsigned char __size_;
};
#else // !SUBCLASS_PADDING
#ifdef NON_STANDARD_PADDING
unsigned char __padding[sizeof(value_type) - 1];
#else
_LLDB_NO_UNIQUE_ADDRESS __padding<sizeof(value_type) - 1> __padding_;
#endif
#ifdef BITMASKS
unsigned char __size_;
#else // !BITMASKS
unsigned char __size_ : 7;
unsigned char __is_long_ : 1;
#endif // BITMASKS
#endif // SUBCLASS_PADDING
};
#ifdef BITMASKS
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
static const size_type __short_shift = 1;
static const size_type __long_mask = 0x1ul;
#else
static const size_type __short_shift = 0;
static const size_type __long_mask = ~(size_type(~0) >> 1);
#endif
#else // !BITMASKS
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
static const size_type __endian_factor = 2;
#else
static const size_type __endian_factor = 1;
#endif
#endif // BITMASKS
#else // !ALTERNATE_LAYOUT
struct __long {
#ifdef BITMASKS
size_type __cap_;
#else
BEGIN_PACKED_ANON_STRUCT
size_type __is_long_ : 1;
size_type __cap_ : sizeof(size_type) * CHAR_BIT - 1;
END_PACKED_ANON_STRUCT
#endif
size_type __size_;
pointer __data_;
};
enum {
__min_cap = (sizeof(__long) - 1) / sizeof(value_type) > 2
? (sizeof(__long) - 1) / sizeof(value_type)
: 2
};
struct __short {
#ifdef SHORT_UNION
union {
#ifdef BITMASKS
unsigned char __size_;
#else // !BITMASKS
struct {
unsigned char __is_long_ : 1;
unsigned char __size_ : 7;
};
#endif // BITMASKS
value_type __lx;
};
#else // !SHORT_UNION
BEGIN_PACKED_ANON_STRUCT
unsigned char __is_long_ : 1;
unsigned char __size_ : 7;
END_PACKED_ANON_STRUCT
#ifdef NON_STANDARD_PADDING
unsigned char __padding[sizeof(value_type) - 1];
#else // !NON_STANDARD_PADDING
_LLDB_NO_UNIQUE_ADDRESS __padding<sizeof(value_type) - 1> __padding_;
#endif // NON_STANDARD_PADDING
#endif // SHORT_UNION
value_type __data_[__min_cap];
};
#ifdef BITMASKS
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
static const size_type __short_shift = 0;
static const size_type __long_mask = ~(size_type(~0) >> 1);
#else
static const size_type __short_shift = 1;
static const size_type __long_mask = 0x1ul;
#endif
#else // !BITMASKS
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
static const size_type __endian_factor = 1;
#else
static const size_type __endian_factor = 2;
#endif
#endif
#endif // ALTERNATE_LAYOUT
union __ulx {
__long __lx;
__short __lxx;
};
enum { __n_words = sizeof(__ulx) / sizeof(size_type) };
struct __raw {
size_type __words[__n_words];
};
struct __rep {
union {
__long __l;
__short __s;
__raw __r;
};
};
__long &getLongRep() {
#if COMPRESSED_PAIR_REV == 0
return __r_.first().__l;
#else
return __rep_.__l;
#endif
}
__short &getShortRep() {
#if COMPRESSED_PAIR_REV == 0
return __r_.first().__s;
#else
return __rep_.__s;
#endif
}
#if COMPRESSED_PAIR_REV == 0
std::__lldb::__compressed_pair<__rep, allocator_type> __r_;
#else
_LLDB_COMPRESSED_PAIR(__rep, __rep_, allocator_type, __alloc_);
#endif
public:
template <size_t __N>
basic_string(unsigned char __size, const value_type (&__data)[__N]) {
static_assert(__N < __min_cap, "");
#ifdef BITMASKS
getShortRep().__size_ = __size << __short_shift;
#else
getShortRep().__size_ = __size;
getShortRep().__is_long_ = false;
#endif
for (size_t __i = 0; __i < __N; ++__i)
getShortRep().__data_[__i] = __data[__i];
}
basic_string(size_t __cap, size_type __size, pointer __data) {
#ifdef BITMASKS
getLongRep().__cap_ = __cap | __long_mask;
#else
getLongRep().__cap_ = __cap / __endian_factor;
getLongRep().__is_long_ = true;
#endif
getLongRep().__size_ = __size;
getLongRep().__data_ = __data;
}
};
using string = basic_string<char, std::char_traits<char>, std::allocator<char>>;
} // namespace __lldb
} // namespace std
int main() {
char longdata[] = "I am a very long string";
std::__lldb::string longstring(sizeof(longdata), sizeof(longdata) - 1,
longdata);
std::__lldb::string shortstring(5, "short");
return 0; // Break here
}
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