Conversion Struct Reference

单个 printf 转换在降为共享格式前的解析结果 / One parsed printf conversion before lowering into the shared format More...

#include <printf_frontend_spec.hpp>

Public Member Functions
constexpr uint8_t	FlagsByte () const
	将前端解析出的标志位打包成共享的 FormatFlag 字节 / Pack the parsed frontend flags into the shared FormatFlag byte
constexpr uint8_t	PrecisionByte () const
	返回共享精度字节；若未显式指定精度则为 0xFF / Return the shared precision byte, or 0xFF when precision is absent

Public Attributes
size_t	arg_index
	当前字段消耗的源参数索引 / source argument index consumed by this field
ValueKind	type
	转换项归一化后的语义类别 / semantic conversion category
Length	length = Length::Default
	已解析的长度修饰符 / parsed length modifier
bool	left_align = false
	已解析的 - 标志 / parsed - flag
bool	force_sign = false
	已解析的 + 标志 / parsed + flag
bool	space_sign = false
	已解析的空格正号标志 / parsed space-sign flag
bool	alternate = false
	已解析的 # 标志 / parsed # flag
bool	zero_pad = false
	已解析的 0 标志 / parsed 0 flag
bool	upper_case = false
	隐含的大写输出标志 / implied uppercase output
bool	positional
	arg_index 是否来自 n$ 语法 / whether arg_index came from n$ syntax
uint8_t	width = 0
	已解析的字段宽度 / parsed field width
bool	has_precision
	是否显式提供了精度 / whether precision was explicitly provided
uint8_t	precision = 0
	已解析的精度值 / parsed precision value

Detailed Description

单个 printf 转换在降为共享格式前的解析结果 / One parsed printf conversion before lowering into the shared format

Definition at line 34 of file printf_frontend_spec.hpp.

Member Function Documentation

FlagsByte()

uint8_t Conversion::FlagsByte ( ) const

inlinenodiscardconstexpr

将前端解析出的标志位打包成共享的 FormatFlag 字节 / Pack the parsed frontend flags into the shared FormatFlag byte

Returns

返回打包后的共享 FormatFlag 字节 / Returns the packed shared FormatFlag byte

Definition at line 60 of file printf_frontend_spec.hpp.

  {
    uint8_t flags = 0;
    if (left_align)
    {
      flags |= static_cast<uint8_t>(FormatFlag::LeftAlign);
    }
    if (force_sign)
    {
      flags |= static_cast<uint8_t>(FormatFlag::ForceSign);
    }
    if (space_sign)
    {
      flags |= static_cast<uint8_t>(FormatFlag::SpaceSign);
    }
    if (alternate)
    {
      flags |= static_cast<uint8_t>(FormatFlag::Alternate);
    }
    if (zero_pad)
    {
      flags |= static_cast<uint8_t>(FormatFlag::ZeroPad);
    }
    if (upper_case)
    {
      flags |= static_cast<uint8_t>(FormatFlag::UpperCase);
    }
    return flags;
  }

PrecisionByte()

uint8_t Conversion::PrecisionByte ( ) const

inlinenodiscardconstexpr

返回共享精度字节；若未显式指定精度则为 0xFF / Return the shared precision byte, or 0xFF when precision is absent

Returns

返回运行期协议期望的共享精度字节 / Returns the shared precision byte expected by the runtime protocol

Definition at line 96 of file printf_frontend_spec.hpp.

  {
    return has_precision ? precision : std::numeric_limits<uint8_t>::max();
  }

Member Data Documentation

alternate

bool Conversion::alternate = false

已解析的 # 标志 / parsed # flag

Definition at line 44 of file printf_frontend_spec.hpp.

arg_index

size_t Conversion::arg_index

Initial value:

=
      0

当前字段消耗的源参数索引 / source argument index consumed by this field

Definition at line 36 of file printf_frontend_spec.hpp.

force_sign

bool Conversion::force_sign = false

已解析的 + 标志 / parsed + flag

Definition at line 42 of file printf_frontend_spec.hpp.

has_precision

bool Conversion::has_precision

Initial value:

=
      false

是否显式提供了精度 / whether precision was explicitly provided

Definition at line 50 of file printf_frontend_spec.hpp.

left_align

bool Conversion::left_align = false

已解析的 - 标志 / parsed - flag

Definition at line 41 of file printf_frontend_spec.hpp.

length

Length Conversion::length = Length::Default

已解析的长度修饰符 / parsed length modifier

Definition at line 40 of file printf_frontend_spec.hpp.

positional

bool Conversion::positional

Initial value:

=
      false

arg_index 是否来自 n$ 语法 / whether arg_index came from n$ syntax

Definition at line 47 of file printf_frontend_spec.hpp.

precision

uint8_t Conversion::precision = 0

已解析的精度值 / parsed precision value

Definition at line 52 of file printf_frontend_spec.hpp.

space_sign

bool Conversion::space_sign = false

已解析的空格正号标志 / parsed space-sign flag

Definition at line 43 of file printf_frontend_spec.hpp.

type

ValueKind Conversion::type

Initial value:

=
      ValueKind::None

转换项归一化后的语义类别 / semantic conversion category

Definition at line 38 of file printf_frontend_spec.hpp.

upper_case

bool Conversion::upper_case = false

隐含的大写输出标志 / implied uppercase output

Definition at line 46 of file printf_frontend_spec.hpp.

width

uint8_t Conversion::width = 0

已解析的字段宽度 / parsed field width

Definition at line 49 of file printf_frontend_spec.hpp.

zero_pad

bool Conversion::zero_pad = false

已解析的 0 标志 / parsed 0 flag

Definition at line 45 of file printf_frontend_spec.hpp.

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The documentation for this struct was generated from the following file:

• src/core/print/printf/printf_frontend_spec.hpp