Enum NineKeyShuangpinError 

pub enum NineKeyShuangpinError {
    UnknownUnit {
        part: CustomTablePart,
        unit: String,
    },
    DuplicateUnit {
        part: CustomTablePart,
        unit: String,
    },
    MissingUnit {
        part: CustomTablePart,
        unit: &'static str,
    },
    InvalidKey {
        part: CustomTablePart,
        unit: String,
        key: String,
    },
}

表为什么不能用，带出错的位置。宿主可以按种类给出自己的提示文字，Display 是给日志和代理看的英文。

没有「编码冲突」这一类：九键上一个两位编码本来就对应好几个音节，零声母音节和声母加韵母的音节共用编码（米旮旯 3 的「安」和「班」都是 25）也是方案的一部分，不会让哪个音节打不出来；每个音节恰好一个编码由「每个单位恰好一个键」保证。

Variants

UnknownUnit

这一部分不认识的单位，例如 finals 里写了 iou。

Fields

part: CustomTablePart

unit: String

DuplicateUnit

同一个单位写了两次。

Fields

part: CustomTablePart

unit: String

MissingUnit

缺了这个单位的键位。

Fields

part: CustomTablePart

unit: &'static str

InvalidKey

键不是这里允许的：声母和韵母是一个数字，零声母是两个数字，数字是 0–9。

Fields

part: CustomTablePart

unit: String

key: String

Trait Implementations

impl Clone for NineKeyShuangpinError

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NineKeyShuangpinError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for NineKeyShuangpinError

fn fmt(&self, formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for NineKeyShuangpinError

impl Error for NineKeyShuangpinError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for NineKeyShuangpinError

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for NineKeyShuangpinError