Struct rusty_systems::system::System

pub struct System { /* private fields */ }

Represents an L-system. This is the base for running the production rules.

This struct is convenient for defining and storing tokens and productions without having to create your own collections.

See the system namespace to for information more broadly.

• Productions can be parsed via strings.
• Productions can be programmatically created.

This is thread safe, and is Sync and Send.

Implementations

impl System

pub fn new() -> Self

pub fn of_family<F: TryIntoFamily>(family: F) -> Result<Self>

Given a previously defined family, this returns a new system using the defined tokens / alphabet / words of that family of systems.

use rusty_systems::system::{family, System};
use rusty_systems::system::family::abop;

family::register(abop::abop_family()).expect("Unable to register the family");
let system = System::of_family("ABOP").expect("Unable to find system");

pub fn parse_production(&self, production: &str) -> Result<Production>

Parse a string as a production and add it to the system.

• Empty bodies are allowed. This is how to write productions that lead to the empty string.

pub fn format<T: DisplaySystem>(&self, item: &T) -> Result<String>

Format Token, ProductionString, Production as strings.

pub fn derive_once(&self, string: ProductionString) -> Result<ProductionString>

Run a single iteration of the productions on the given string. Returns None if an empty string is produced.

pub fn derive( &self, string: ProductionString, settings: RunSettings ) -> Result<ProductionString>

pub fn parse_prod_string(&self, string: &str) -> Result<ProductionString>

pub fn production_len(&self) -> usize

Returns the number of production rules in the system.

pub fn token_len(&self) -> usize

Returns the number of tokens (terminal and production tokens) registered with the system

pub fn terminal_tokens_len(&self) -> usize

Returns the number of terminal tokens registered with the system

pub fn prod_tokens_len(&self) -> usize

Returns the number of terminal tokens registered with the system

Trait Implementations

impl Debug for System

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

Formats the value using the given formatter.

impl Default for System

fn default() -> Self

Returns the “default value” for a type.

impl ProductionStore for System

fn add_production(&self, production: Production) -> Result<Production>

impl TokenStore for System

fn get_token(&self, name: &str) -> Option<Token>

Return the token that represents the given term, if it exists.

Note that this does not create any new tokens to the system.

fn add_token(&self, name: &str, kind: TokenKind) -> Result<Token>