Struct ProcError 

pub struct ProcError { /* private fields */ }

Available on crate feature proc only.

Error of termal procedural macro. Can be converted to a TokenStream that produces the error message or the message can be printed with the Display implementation.

Implementations

impl ProcError

pub fn to_stream(self) -> TokenStream

Converts the error to a TokenStream that will produce the error at compile time.

pub fn span(&self) -> Span

Gets the Span of the error message.

This is the span that will be asociated with the compile time error.

Trait Implementations

impl Debug for ProcError

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

Formats the value using the given formatter.

impl Display for ProcError

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

Formats the value using the given formatter.

impl Error for ProcError

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<ProcError> for TokenStream

fn from(value: ProcError) -> Self

Converts to this type from the input type.