Enum Param

pub enum Param {
    Symbol(LitSym),
    Default(LitSym, Expr),
}

A parameter of a function declaration, such as x or y = 1 in the declaration f(x, y = 1) = x^y.

Variants

Symbol(LitSym)

A parameter with no default value, such as x in f(x) = x^2.

Default(LitSym, Expr)

A parameter with a default value, such as y = 1 in f(x, y = 1) = x^y.

Implementations

impl Param

pub fn span(&self) -> Range<usize>

Returns the span of the parameter.

pub fn symbol(&self) -> &LitSym

Returns the symbol of the parameter.

pub fn has_default(&self) -> bool

Returns true if the parameter has a default value.

Trait Implementations

impl Clone for Param

fn clone(&self) -> Param

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Param

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

Formats the value using the given formatter.

impl Display for Param

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

Formats the value using the given formatter.

impl Latex for Param

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

Format the value as LaTeX.

fn as_display(&self) -> LatexFormatter<'_, Self>

Wraps the value in a LatexFormatter, which implements Display.

impl<'source> Parse<'source> for Param

fn std_parse( input: &mut Parser<'source>, recoverable_errors: &mut Vec<Error>, ) -> Result<Self, Vec<Error>>

Parses a value from the given stream of tokens, advancing the stream past the consumed tokens if parsing is successful.

fn parse(input: &mut Parser<'source>) -> ParseResult<Self>

Parses a value from the given stream of tokens, advancing the stream past the consumed tokens if parsing is successful.

impl PartialEq for Param

fn eq(&self, other: &Param) -> 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 Eq for Param

impl StructuralPartialEq for Param