Enum TypeError 

pub enum TypeError {
    MissingRequiredField {
        field: &'static str,
    },
    UnknownFieldWireType {
        value: u64,
    },
    InvalidEnumValue {
        enum_name: &'static str,
        value: u8,
    },
    Wire(WireError),
}

Errors that can occur when encoding or decoding typed block bodies.

These are higher-level than WireError — they deal with semantic validation of block fields rather than raw byte framing. A TypeError can wrap an underlying WireError when the problem originates in varint or length-prefix parsing within a block body.

Error hierarchy

┌─────────────────────────────────────────────────────┐
│ TypeError (this crate)                              │
│   ├── wraps WireError for low-level parse failures  │
│   ├── UnknownFieldWireType for bad TLV wire types   │
│   ├── MissingRequiredField for incomplete blocks     │
│   └── InvalidEnumValue for out-of-range enum bytes  │
└─────────────────────────────────────────────────────┘

Variants

MissingRequiredField

A required field was not present in the block body.

Each block type defines which fields are mandatory. If the decoder reaches the end of the body without encountering a required field ID, this error is returned with the field name for diagnostics.

Fields

field: &'static str

UnknownFieldWireType

A field’s wire type byte did not match any known [FieldWireType].

The TLV encoding uses wire types 0 (varint), 1 (bytes), and 2 (nested). Any other value indicates data corruption or a version mismatch.

Fields

value: u64

InvalidEnumValue

An enum field contained a byte value outside its defined range.

For example, a Role field with value 0x09 when the max defined variant is 0x04. The enum name and raw value are captured for diagnostics.

Fields

enum_name: &'static str

value: u8

Wire(WireError)

An underlying wire-level error occurred while parsing within a body.

This typically surfaces when a varint inside the block body is malformed or the body bytes are truncated mid-field.

Trait Implementations

impl Debug for TypeError

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

Formats the value using the given formatter.

impl Display for TypeError

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

Formats the value using the given formatter.

impl Error for TypeError

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 From<WireError> for TypeError

fn from(source: WireError) -> Self

Converts to this type from the input type.