Struct exmex::Operator

pub struct Operator<'a, T> {
    pub repr: &'a str,
    pub bin_op: Option<BinOp<T>>,
    pub unary_op: Option<fn(_: T) -> T>,
}

Operators can be custom-defined by the library-user in terms of this struct.

Examples

use exmex::{BinOp, Operator};
let ops = vec![
    Operator {
        repr: "-",
        bin_op: Some(BinOp {
            apply: |a, b| a - b,
            prio: 0,
        }),
        unary_op: Some(|a: f32| (-a)),
    },
    Operator {
        repr: "sin",
        bin_op: None,
        unary_op: Some(|a: f32| a.sin()),
    }
];

Fields

repr: &'a str

Representation of the operator in the string to be parsed, e.g., - or sin.

bin_op: Option<BinOp<T>>

Binary operator that contains a priority besides a function pointer, if available.

unary_op: Option<fn(_: T) -> T>

Unary operator that does not have an explicit priority. Unary operators have higher priority than binary opertors, e.g., -1^2 == 1.

Trait Implementations

impl<'a, T: Clone> Clone for Operator<'a, T>

fn clone(&self) -> Operator<'a, T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, T: Debug> Debug for Operator<'a, T>

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

Formats the value using the given formatter.

impl<'a, T: Ord> Ord for Operator<'a, T>

fn cmp(&self, other: &Operator<'a, T>) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

Restrict a value to a certain interval.

impl<'a, T: PartialEq> PartialEq<Operator<'a, T>> for Operator<'a, T>

fn eq(&self, other: &Operator<'a, T>) -> bool

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

fn ne(&self, other: &Operator<'a, T>) -> bool

This method tests for !=.

impl<'a, T: PartialOrd> PartialOrd<Operator<'a, T>> for Operator<'a, T>

fn partial_cmp(&self, other: &Operator<'a, T>) -> Option<Ordering>

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

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

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

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

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

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

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

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<'a, T: Copy> Copy for Operator<'a, T>

impl<'a, T: Eq> Eq for Operator<'a, T>

impl<'a, T> StructuralEq for Operator<'a, T>

impl<'a, T> StructuralPartialEq for Operator<'a, T>