Module system 

Collection of tools for defining a group of Production rules on strings of symbols.

Creating systems

Using System

• TODO Talk about System::new and System::default.
• TODO Talk about System::of_family.
• TODO define a system

A production that produces the empty string can be represented as so:

let production = system.parse_production("X -> ").unwrap();

Context sensitive productions. todo More detail here

let production = system.parse_production("G < S -> S G").unwrap();
let string = parser::parse_prod_string("S G S").unwrap();
assert!(!production.matches(&string, 0));       // Does not match the first S
assert!( production.matches(&string, 2));       // Matches the last S

• todo discuss stochastic rules

Collections of Symbol and Production

TODO talk about collections of symbols and productions.

Families

TODO talk about families

Thread safety

TODO Talk about thread safety

See also

• Symbol
• Production
• ProductionString
• SystemFamily

Modules

family

Structs

RunSettings

Defines constraints on deriving strings from an System.

System

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

Functions

derive

derive_once

Runs one step of an iteration, using the given production rules.

find_matching

Given a vector of productions, this returns a reference to a production that matches the string at the given location.