Enum ParseError 

#[non_exhaustive]
pub enum ParseError {
    EmptyInput,
    NoHeaders,
    InvalidRange {
        offset: u32,
        length: u32,
        available: u64,
    },
}

Error returned when parse() cannot produce any result from the input bytes.

Best-effort parsing: malformed-but-parseable input yields a ParsedMessage with warnings populated. Only truly unrecoverable input returns Err.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

EmptyInput

The input byte slice is empty.

NoHeaders

The input contains no recognizable RFC 5322 headers.

InvalidRange

The byte range specified in a ParsedPart extends beyond the raw message bytes.

offset and length are u32 to match ParsedPart::body_range. available is u64 because it comes from raw.len() as u64 — using u64 avoids a lossy truncation on platforms where usize > u32 and makes the error message unambiguous even if the slice length exceeds 4 GiB (which ParsedPart cannot address, but the caller’s buffer might be that large).

Fields

offset: u32

length: u32

available: u64

Trait Implementations

impl Clone for ParseError

fn clone(&self) -> ParseError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParseError

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ParseError

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ParseError

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

Formats the value using the given formatter.

impl Eq for ParseError

impl Error for ParseError

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 ParseError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ParseError

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ParseError