Struct Span

pub struct Span {
    pub span: RawSpan,
    pub generated_from_span: Option<RawSpan>,
}

Meta information about a piece of code (block, statement, etc.)

Fields

span: RawSpan

The source code span.

If this meta information is for a statement/terminator coming from a macro expansion/inlining/etc., this span is (in case of macros) for the macro before expansion (i.e., the location the code where the user wrote the call to the macro).

Ex:

// Below, we consider the spans for the statements inside `test`

//   the statement we consider, which gets inlined in `test`
                         VV
macro_rules! macro { ... st ... } // `generated_from_span` refers to this location

fn test() {
    macro!(); // <-- `span` refers to this location
}

generated_from_span: Option<RawSpan>

Where the code actually comes from, in case of macro expansion/inlining/etc.

Implementations

impl Span

pub fn rust_span(self) -> Span

impl Span

pub fn dummy() -> Self

Trait Implementations

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, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Span

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Drive for Span

fn drive<V: Visitor>(&self, visitor: &mut V)

impl DriveMut for Span

fn drive_mut<V: VisitorMut>(&mut self, visitor: &mut V)

impl From<Span> for MultiSpan

fn from(span: Span) -> Self

Converts to this type from the input type.

impl From<Span> for Span

fn from(span: Span) -> Self

Converts to this type from the input type.

impl Hash for Span

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Span

fn cmp(&self, other: &Span) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Span

fn eq(&self, other: &Span) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Span

fn partial_cmp(&self, other: &Span) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Span

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Span

impl Eq for Span

impl StructuralPartialEq for Span