Struct proc_macro::Span

pub struct Span(_);

🔬 This is a nightly-only experimental API. (proc_macro #38356)

A region of source code, along with macro expansion information.

Methods

impl Span

pub fn call_site() -> Span

🔬 This is a nightly-only experimental API. (proc_macro #38356)

The span of the invocation of the current procedural macro.

pub fn error<T: Into<String>>(self, message: T) -> Diagnostic

🔬 This is a nightly-only experimental API. (proc_macro #38356)

Create a new Diagnostic with the given message at the span self.

pub fn warning<T: Into<String>>(self, message: T) -> Diagnostic

🔬 This is a nightly-only experimental API. (proc_macro #38356)

Create a new Diagnostic with the given message at the span self.

pub fn note<T: Into<String>>(self, message: T) -> Diagnostic

🔬 This is a nightly-only experimental API. (proc_macro #38356)

Create a new Diagnostic with the given message at the span self.

pub fn help<T: Into<String>>(self, message: T) -> Diagnostic

🔬 This is a nightly-only experimental API. (proc_macro #38356)

Create a new Diagnostic with the given message at the span self.

Trait Implementations

impl Copy for Span

impl Clone for Span

fn clone(&self) -> Span

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Span

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Default for Span

fn default() -> Span

Returns the "default value" for a type.