Struct proc_macro::Span
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pub struct Span(_);
A region of source code, along with macro expansion information.
Methods
impl Span[src]
impl Span[src]
pub fn call_site() -> Span[src][−]
The span of the invocation of the current procedural macro.
pub fn source_file(&self) -> SourceFile[src][−]
The original source file into which this span points.
pub fn parent(&self) -> Option<Span>[src][−]
The Span for the tokens in the previous macro expansion from which
self was generated from, if any.
pub fn source(&self) -> Span[src][−]
The span for the origin source code that self was generated from. If
this Span wasn't generated from other macro expansions then the return
value is the same as *self.
pub fn start(&self) -> LineColumn[src][−]
Get the starting line/column in the source file for this span.
pub fn end(&self) -> LineColumn[src][−]
Get the ending line/column in the source file for this span.
pub fn join(&self, other: Span) -> Option<Span>[src][−]
Create a new span encompassing self and other.
Returns None if self and other are from different files.
pub fn resolved_at(&self, other: Span) -> Span[src][−]
Creates a new span with the same line/column information as self but
that resolves symbols as though it were at other.
pub fn located_at(&self, other: Span) -> Span[src][−]
Creates a new span with the same name resolution behavior as self but
with the line/column information of other.
pub fn error<T: Into<String>>(self, message: T) -> Diagnostic[src][−]
Create a new Diagnostic with the given message at the span
self.
pub fn warning<T: Into<String>>(self, message: T) -> Diagnostic[src][−]
Create a new Diagnostic with the given message at the span
self.
pub fn note<T: Into<String>>(self, message: T) -> Diagnostic[src][−]
Create a new Diagnostic with the given message at the span
self.
pub fn help<T: Into<String>>(self, message: T) -> Diagnostic[src][−]
Create a new Diagnostic with the given message at the span
self.
Trait Implementations
impl Copy for Span[src]
impl Clone for Span[src]
fn clone(&self) -> Span[src][−]
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)1.0.0[src][−]
Performs copy-assignment from source. Read more
impl Debug for Span[src]
fn fmt(&self, __arg_0: &mut Formatter) -> Result[src][−]
Formats the value using the given formatter. Read more
impl PartialEq for Span[src]
fn eq(&self, __arg_0: &Span) -> bool[src][−]
This method tests for self and other values to be equal, and is used by ==. Read more
fn ne(&self, __arg_0: &Span) -> bool[src][−]
This method tests for !=.