66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
/*++
|
|
Copyright (c) Microsoft Corporation
|
|
Licensed under the MIT license.
|
|
|
|
Module Name:
|
|
- CharRowCell.hpp
|
|
|
|
Abstract:
|
|
- data structure for one cell of a char row. contains the char data for one
|
|
coordinate position in the output buffer (leading/trailing information and
|
|
the char itself.
|
|
|
|
Author(s):
|
|
- Austin Diviness (AustDi) 02-May-2018
|
|
--*/
|
|
|
|
#pragma once
|
|
|
|
#include "DbcsAttribute.hpp"
|
|
#include "unicode.hpp"
|
|
|
|
#if (defined(_M_IX86) || defined(_M_AMD64))
|
|
// currently CharRowCell's fields use 3 bytes of memory, leaving the 4th byte in unused. this leads
|
|
// to a rather large amount of useless memory allocated. so instead, pack CharRowCell by bytes instead of words.
|
|
#pragma pack(push, 1)
|
|
#endif
|
|
|
|
class CharRowCell final
|
|
{
|
|
public:
|
|
CharRowCell() noexcept = default;
|
|
CharRowCell(const wchar_t wch, const DbcsAttribute attr) noexcept
|
|
:
|
|
_wch(wch),
|
|
_attr(attr)
|
|
{
|
|
}
|
|
|
|
void EraseChars() noexcept;
|
|
void Reset() noexcept;
|
|
|
|
bool IsSpace() const noexcept;
|
|
|
|
DbcsAttribute& DbcsAttr() noexcept;
|
|
const DbcsAttribute& DbcsAttr() const noexcept;
|
|
|
|
wchar_t& Char() noexcept;
|
|
const wchar_t& Char() const noexcept;
|
|
|
|
friend constexpr bool operator==(const CharRowCell& a, const CharRowCell& b) noexcept;
|
|
|
|
private:
|
|
wchar_t _wch{};
|
|
DbcsAttribute _attr{};
|
|
};
|
|
|
|
#if (defined(_M_IX86) || defined(_M_AMD64))
|
|
#pragma pack(pop)
|
|
#endif
|
|
|
|
constexpr bool operator==(const CharRowCell& a, const CharRowCell& b) noexcept
|
|
{
|
|
return (a._wch == b._wch &&
|
|
a._attr == b._attr);
|
|
}
|