Enum ReadError 

pub enum ReadError {
    MissingRequiredFields {
        missing_mask: u64,
        meta: &'static [(&'static str, u16, u8)],
    },
    InvalidValue {
        name: &'static str,
        tag: u16,
        msg: &'static str,
    },
}

Strict parse error type for generated read() APIs.

This error type is designed for high-performance parsing scenarios where detailed error information is needed for debugging and validation.

Variants

MissingRequiredFields

Aggregated (bitmask) missing required members: fields (kind=0), components (kind=1), groups (kind=2).

The meta slice layout is: (name, tag_or_count_tag, kind)

Fields

missing_mask: u64

Bitmask indicating which required fields are missing

meta: &'static [(&'static str, u16, u8)]

Metadata about the fields, components, and groups

InvalidValue

Invalid value encountered during parsing

Fields

name: &'static str

Name of the field that had an invalid value

tag: u16

FIX tag number

msg: &'static str

Description of what went wrong

Implementations

impl ReadError

pub fn missing_member_names(&self) -> Option<Vec<&'static str>>

Returns the list of names of missing required members when this is ReadError::MissingRequiredFields.

Returns Some(Vec::new()) if the variant is present but no bits are actually missing (mask == 0), and None for other variants.

Trait Implementations

impl Debug for ReadError

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

Formats the value using the given formatter.

impl Display for ReadError

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

Formats the value using the given formatter.

impl Error for ReadError

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.