Struct Sign 

pub struct Sign(/* private fields */);

Typed wrapper for an amount sign token (PLUS or MINUS).

Sign::cast is a position-AGNOSTIC kind check: it accepts ANY PLUS or MINUS token, including operator-position signs inside arithmetic (e.g., the - in 10 + -5 USD). To get the LEADING sign of an Amount, use Amount::sign which scopes to the first non-whitespace token of AMOUNT. Calling Sign::cast on an arbitrary token does not imply the token occupies the leading-sign position.

Implementations

impl Sign

pub fn cast(token: SyntaxToken) -> Option<Self>

pub const fn syntax(&self) -> &SyntaxToken

pub fn kind(&self) -> SyntaxKind

pub fn text(&self) -> &str

pub fn is_plus(&self) -> bool

pub fn is_minus(&self) -> bool

Trait Implementations

impl Clone for Sign

fn clone(&self) -> Sign

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Sign

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

Formats the value using the given formatter.

impl Eq for Sign

impl Hash for Sign

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 PartialEq for Sign

fn eq(&self, other: &Sign) -> 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 StructuralPartialEq for Sign