Struct bnf::Production

pub struct Production {
    pub lhs: Term,
    // some fields omitted
}

A Production is comprised of any number of Expressions

Fields

lhs: Term

Methods

impl Production

pub fn new() -> Production

Construct a new Production

pub fn from_parts(t: Term, e: Vec<Expression>) -> Production

Construct an Production from Expressions

pub fn from_str(s: &str) -> Result<Self, Error>

pub fn add_to_rhs(&mut self, expr: Expression)

Add Expression to the Production's right hand side

pub fn remove_from_rhs(&mut self, expr: &Expression) -> Option<Expression>

Remove Expression from the Production's right hand side

If interested if Expression was removed, then inspect the returned Option.

pub fn rhs_iter(&self) -> Iter

Get iterator of the Production's right hand side Expressions

pub fn rhs_iter_mut(&mut self) -> IterMut

Get mutable iterator of the Production's right hand side Expressions

Trait Implementations

impl PartialEq<Production> for Production

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

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

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

This method tests for !=.

impl Clone for Production

fn clone(&self) -> Production

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Production

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

Formats the value using the given formatter.

impl Display for Production

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

Formats the value using the given formatter.

impl FromStr for Production

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.