Enum ImError 

pub enum ImError {
    Parse(String),
    UnsupportedWsAction(String),
    DuplicateWsAction(String),
    InvalidWsHandlerRegistration {
        registered: String,
        handler: String,
    },
    IncompleteWsHandlerRegistry {
        expected: usize,
        actual: usize,
    },
    InvalidWsFrame(String),
    InvalidSeq {
        expected: u64,
        got: u64,
    },
    UnknownChannel(u64),
    UnknownCorrelation(u64),
    Serialize(String),
}

IM 业务域错误。

MIN-2 修复：删除双向 From 套娃

原 ImError::Core(#[from] CoreError) + CoreError::ModuleError{ source: Box<dyn Error> } 形成双向 From 路径（ImError → CoreError → ImError），可产生无限嵌套错误链。

修复：删除 ImError::Core 及其 #[from] 自动实现。 依赖方向应单向：helix-core 不依赖 helix-im，helix-im 的错误不应反持 CoreError。 IM 内部错误通过 CoreError::ModuleError { source: Box<dyn Error> } 向上传播， 但 IM 自身不持有 CoreError（避免循环持有）。

若需要包装外部错误，在 module.rs 的 handle 方法中显式 map_err 到 CoreError。

Variants

Parse(String)

UnsupportedWsAction(String)

DuplicateWsAction(String)

InvalidWsHandlerRegistration

Fields

registered: String

handler: String

IncompleteWsHandlerRegistry

Fields

expected: usize

actual: usize

InvalidWsFrame(String)

InvalidSeq

Fields

expected: u64

got: u64

UnknownChannel(u64)

UnknownCorrelation(u64)

Serialize(String)

Trait Implementations

impl Clone for ImError

fn clone(&self) -> ImError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ImError

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

Formats the value using the given formatter.

impl Display for ImError

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

Formats the value using the given formatter.

impl Error for ImError

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.