Enum simple_parser::Expression

pub enum Expression<N, T> {
    TokenKind {
        token_kind: T,
    },
    Nonterminal {
        nonterminal: N,
    },
    Alternation {
        expressions: Vec<Expression<N, T>>,
    },
    Concatenation {
        expressions: Vec<Expression<N, T>>,
    },
    Repetition {
        expression: Box<Expression<N, T>>,
        min: Option<u32>,
        max: Option<u32>,
    },
}

Variants

TokenKind

Fields of TokenKind

token_kind: T

Nonterminal

Fields of Nonterminal

nonterminal: N

Alternation

Fields of Alternation

expressions: Vec<Expression<N, T>>

Concatenation

Fields of Concatenation

expressions: Vec<Expression<N, T>>

Repetition

Fields of Repetition

expression: Box<Expression<N, T>>min: Option<u32>max: Option<u32>

Implementations

impl<N, T> Expression<N, T> where
    N: Clone + Ord,
    T: Clone + PartialEq<T>, 

pub fn parse(
    &self,
    tokens: &[Token<T>],
    productions: &BTreeMap<N, Expression<N, T>>
) -> Result<ParseTree<N, T>, &'static str>

Trait Implementations

impl<N, T> Clone for Expression<N, T> where
    N: Clone,
    T: Clone, 

fn clone(&self) -> Expression<N, T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<N, T> Debug for Expression<N, T> where
    N: Debug,
    T: Debug, 

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

Formats the value using the given formatter.

impl<N, T> Eq for Expression<N, T> where
    N: Eq,
    T: Eq, 

impl<N, T> Ord for Expression<N, T> where
    N: Ord,
    T: Ord, 

fn cmp(&self, other: &Expression<N, T>) -> 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<N, T> PartialEq<Expression<N, T>> for Expression<N, T> where
    N: PartialEq<N>,
    T: PartialEq<T>, 

fn eq(&self, other: &Expression<N, T>) -> bool

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

fn ne(&self, other: &Expression<N, T>) -> bool

This method tests for !=.

impl<N, T> PartialOrd<Expression<N, T>> for Expression<N, T> where
    N: PartialOrd<N>,
    T: PartialOrd<T>, 

fn partial_cmp(&self, other: &Expression<N, T>) -> Option<Ordering>

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

fn lt(&self, other: &Expression<N, T>) -> bool

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

fn le(&self, other: &Expression<N, T>) -> bool

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

fn gt(&self, other: &Expression<N, T>) -> bool

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

fn ge(&self, other: &Expression<N, T>) -> bool

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