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

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

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();
  }

Field Documentation

alternate

bool Conversion::alternate = false

parsed # flag / 已解析的 # 标志

Definition at line 44 of file printf_frontend_spec.hpp.

arg_index

size_t Conversion::arg_index

Initial value:

=
      0

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

Definition at line 36 of file printf_frontend_spec.hpp.

force_sign

bool Conversion::force_sign = false

parsed + flag / 已解析的 + 标志

Definition at line 42 of file printf_frontend_spec.hpp.

has_precision

bool Conversion::has_precision

Initial value:

=
      false

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

Definition at line 50 of file printf_frontend_spec.hpp.

left_align

bool Conversion::left_align = false

parsed - flag / 已解析的 - 标志

Definition at line 41 of file printf_frontend_spec.hpp.

length

Length Conversion::length = Length::Default

parsed length modifier / 已解析的长度修饰符

Definition at line 40 of file printf_frontend_spec.hpp.

positional

bool Conversion::positional

Initial value:

=
      false

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

Definition at line 47 of file printf_frontend_spec.hpp.

precision

uint8_t Conversion::precision = 0

parsed precision value / 已解析的精度值

Definition at line 52 of file printf_frontend_spec.hpp.

space_sign

bool Conversion::space_sign = false

parsed space-sign flag / 已解析的空格正号标志

Definition at line 43 of file printf_frontend_spec.hpp.

type

ValueKind Conversion::type

Initial value:

=
      ValueKind::None

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

Definition at line 38 of file printf_frontend_spec.hpp.

upper_case

bool Conversion::upper_case = false

implied uppercase output / 隐含的大写输出标志

Definition at line 46 of file printf_frontend_spec.hpp.

width

uint8_t Conversion::width = 0

parsed field width / 已解析的字段宽度

Definition at line 49 of file printf_frontend_spec.hpp.

zero_pad

bool Conversion::zero_pad = false

parsed 0 flag / 已解析的 0 标志

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