Struct Ctxt

pub struct Ctxt {
    errors: RefCell<Option<Vec<Error>>>,
}

A type to collect errors together and format them.

Dropping this object will cause a panic. It must be consumed using check.

References can be shared since this type uses run-time exclusive mut checking.

Fields

errors: RefCell<Option<Vec<Error>>>

Implementations

impl Ctxt

pub fn new() -> Self

Create a new context object.

This object contains no errors, but will still trigger a panic if it is not checked.

pub fn error_spanned_by<A: ToTokens, T: Display>(&self, obj: A, msg: T)

Add an error to the context object with a tokenenizable object.

The object is used for spanning in error messages.

pub fn syn_error(&self, err: Error)

Add one of Syn’s parse errors.

pub fn check(self) -> Result<()>

Consume this object, producing a formatted error string if there are errors.

Trait Implementations

impl Default for Ctxt

fn default() -> Ctxt

Returns the “default value” for a type.

impl Drop for Ctxt

fn drop(&mut self)

Executes the destructor for this type.