Struct Arity 

pub struct Arity { /* private fields */ }

How many operands an intrinsic takes: from min to max, both inclusive (at most 255, an import’s limit).

Examples

use bcgen_lang::Arity;

assert!(Arity::exact(2).accepts(2));
assert!(!Arity::exact(2).accepts(3));
assert!(Arity::at_least(1).accepts(255));
assert_eq!(Arity::at_least(1).to_string(), "1 to 255");

Implementations

impl Arity

pub const fn exact(n: u8) -> Self

Exactly n operands.

Examples

assert_eq!(bcgen_lang::Arity::exact(1).max(), 1);

pub const fn range(min: u8, max: u8) -> Self

From min to max operands (a max below min is raised to it).

Examples

use bcgen_lang::Arity;

assert_eq!(Arity::range(2, 1), Arity::exact(2));

pub const fn at_least(n: u8) -> Self

n operands or more, up to 255.

Examples

assert_eq!(bcgen_lang::Arity::at_least(0).max(), 255);

pub const fn min(self) -> u8

The fewest operands.

Examples

assert_eq!(bcgen_lang::Arity::exact(3).min(), 3);

pub const fn max(self) -> u8

The most operands.

Examples

assert_eq!(bcgen_lang::Arity::exact(3).max(), 3);

pub const fn accepts(self, n: usize) -> bool

Whether n operands are accepted.

Examples

assert!(!bcgen_lang::Arity::range(1, 2).accepts(0));

Trait Implementations

impl Clone for Arity

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Arity

impl Debug for Arity

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

Formats the value using the given formatter.

impl Display for Arity

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

Formats the value using the given formatter.

impl Eq for Arity

impl Hash for Arity

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 Arity

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Arity