Enum UnparseError 

pub enum UnparseError {
    Unsupported(&'static str),
    FmtError,
}

Errors the unparser can surface. Caller (Phase 1 mutator) maps these to “skip this mutation, return 0 to AFL”.

Variants

Unsupported(&'static str)

AST variant the unparser explicitly refuses — typically a node only produced by a post-parse pass (TCO, resolver) that the mutator should never see. Includes a static tag describing the variant so the integration test failure names the exact gap.

FmtError

std::fmt::Write failed against the internal String buffer. Effectively unreachable (String never fails on Write), but ? propagation needs a variant.

Trait Implementations

impl Clone for UnparseError

fn clone(&self) -> UnparseError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UnparseError

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

Formats the value using the given formatter.

impl Display for UnparseError

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

Formats the value using the given formatter.

impl Error for UnparseError

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<Error> for UnparseError

fn from(_: Error) -> Self

Converts to this type from the input type.

impl PartialEq for UnparseError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for UnparseError