prime/include/rstl/string.hpp

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#ifndef _RSTL_STRING
#define _RSTL_STRING
#include "types.h"
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#include "rstl/rmemory_allocator.hpp"
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class CInputStream;
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class COutputStream;
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namespace rstl {
template < typename _CharTp >
struct char_traits {};
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template < typename _CharTp, typename Traits = char_traits< _CharTp >,
typename Alloc = rmemory_allocator >
class basic_string {
struct COWData {
uint x0_capacity;
uint x4_refCount;
_CharTp* x8_data;
};
const _CharTp* x0_ptr;
COWData* x4_cow;
uint x8_size;
uint _pad; // Alloc?
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void internal_prepare_to_write(int len, bool);
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void internal_allocate(int size);
// {
// x4_cow = reinterpret_cast<COWData*>(new uchar[size * sizeof(_CharTp) +
// 8]); x0_ptr = x4_cow->x8_data; x4_cow->x0_capacity = uint(size);
// x4_cow->x4_refCount = 1;
// }
void internal_dereference();
// {
// if (x4_cow && --x4_cow->x4_refCount == 0)
// delete[] x4_cow;
// }
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static const _CharTp mNull;
public:
struct literal_t {};
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basic_string() : x0_ptr(&mNull), x4_cow(nullptr), x8_size(0) {}
basic_string(literal_t, const _CharTp* data);
// {
// x0_ptr = data;
// x4_cow = nullptr;
// const _CharTp* it = data;
// while (*it)
// ++it;
// x8_size = uint((it - data) / sizeof(_CharTp));
// }
basic_string(const basic_string& str);
// {
// x0_ptr = str.x0_ptr;
// x4_cow = str.x4_cow;
// x8_size = str.x8_size;
// if (x4_cow)
// ++x4_cow->x4_refCount;
// }
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basic_string(CInputStream& in, const Alloc& = rmemory_allocator());
basic_string(const _CharTp* data, int size = -1, const Alloc& = rmemory_allocator());
// {
// if (size <= 0 && !data)
// {
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// x0_ptr = &mNull;
// x4_cow = nullptr;
// x8_size = 0;
// return;
// }
// const _CharTp* it = data;
// uint len = 0;
// while (*it)
// {
// if (size != -1 && len >= size)
// break;
// ++it;
// ++len;
// }
// internal_allocate(len + 1);
// x8_size = len;
// for (int i = 0; i < len; ++i)
// x4_cow->x8_data[i] = data[i];
// x4_cow->x8_data[len] = 0;
// }
~basic_string() { internal_dereference(); }
size_t size() const { return x8_size; }
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void reserve(int len) { internal_prepare_to_write(len, true); }
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void assign(const basic_string&);
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basic_string& operator=(const basic_string& other) {
assign(other);
return *this;
}
basic_string operator+(const _CharTp*);
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void append(const basic_string& other);
void append(int, _CharTp);
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void append(const _CharTp*, int);
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int _eq_helper(const basic_string& other) const;
bool operator==(const basic_string& other) const;
bool operator<(const basic_string& other) const;
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const _CharTp* data() const { return x0_ptr; }
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void PutTo(COutputStream& out) const;
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const _CharTp at(int idx) const { return data()[idx]; }
};
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template < typename _CharTp, typename Traits, typename Alloc >
bool basic_string< _CharTp, Traits, Alloc >::operator==(const basic_string& other) const {
return _eq_helper(other) == 0;
}
template < typename _CharTp, typename Traits, typename Alloc >
bool basic_string< _CharTp, Traits, Alloc >::operator<(const basic_string& other) const {
return _eq_helper(other) < 0;
}
// template <>
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// const char basic_string<char>::mNull = 0;
// template <>
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// const wchar_t basic_string<wchar_t>::mNull = 0;
typedef basic_string< wchar_t > wstring;
typedef basic_string< char > string;
wstring wstring_l(const wchar_t* data);
// {
// return wstring(wstring::literal_t(), data);
// }
string string_l(const char* data);
// {
// return string(string::literal_t(), data);
// }
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string operator+(const string& a, const string& b);
// {
// string result(a);
// result.append(b);
// return result;
// }
string operator+(const string& a, char c) {
string result(a);
result.append(1, c);
return result;
}
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CHECK_SIZEOF(string, 0x10)
} // namespace rstl
#endif // _RSTL_STRING