Enum TypeMismatchError 

pub enum TypeMismatchError {
    NullPointer,
    InvalidTypeId,
    Mismatch {
        expected: &'static str,
        found: &'static str,
    },
}

Error returned when type checking fails in try_from_sexp_with_error.

The found field in Mismatch contains a &'static str from R’s interned symbol table, which persists for the R session lifetime.

Variants

NullPointer

The external pointer’s address was null.

InvalidTypeId

The prot slot didn’t contain a valid type symbol.

Mismatch

The stored type doesn’t match the expected type.

Fields

expected: &'static str

Expected Rust type name from this pointer wrapper.

found: &'static str

Actual stored Rust type name found in pointer metadata.

Trait Implementations

impl Clone for TypeMismatchError

fn clone(&self) -> TypeMismatchError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TypeMismatchError

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

Formats the value using the given formatter.

impl Display for TypeMismatchError

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

Formats the value using the given formatter.

impl Error for TypeMismatchError

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.