Enum passerine::compiler::parse::Prec

#[repr(u8)]pub enum Prec {
    None,
    Assign,
    Lambda,
    Call,
    End,
}

We're using a Pratt parser, so this little enum defines different precedence levels. Each successive level is higher, so, for example, * > +.

Variants

None

Assign

Lambda

Call

End

Implementations

impl Prec

pub fn associate_left(&self) -> Prec

Increments precedence level to cause the parser to associate infix operators to the left. For example, addition is left-associated:

Prec::Addition.associate_left()

By default, the parser accociates right.

Trait Implementations

impl Clone for Prec

fn clone(&self) -> Prec

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Prec

impl Debug for Prec

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

Formats the value using the given formatter.

impl Eq for Prec

impl Ord for Prec

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

This method returns an Ordering between self and other.

#[must_use]fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl PartialEq<Prec> for Prec

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

This method tests for self and other values to be equal, and is used by ==.

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl PartialOrd<Prec> for Prec

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

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

#[must_use]fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]fn le(&self, other: &Rhs) -> bool

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

#[must_use]fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]fn ge(&self, other: &Rhs) -> bool

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

impl StructuralEq for Prec

impl StructuralPartialEq for Prec