CA rules parsers

Parsing rule strings of life-like and other cellular automata.

Currently the following rules are supported:

• Totalistic Life-like, e.g., B3/S23.
• Isotropic non-totalistic Life-like, e.g., B2ci3ai4c8/S02ae3eijkq4iz5ar6i7e.
• Non-isotropic Life-like, e.g., MAPARYXfhZofugWaH7oaIDogBZofuhogOiAaIDogIAAgAAWaH7oaIDogGiA6ICAAIAAaIDogIAAgACAAIAAAAAAAA.
• Totalistic Hexagonal, e.g., B2/S34H.
• Isotropic non-totalistic Hexagonal, e.g., B2o3-o4m/S12m3o4m5H.
• Non-isotropic Hexagonal, e.g., MAPFgFoF2gXgH5oF4B+gH4A6AH.
• von Neumann neighborhood, e.g., B2/S013V.
• Non-isotropic von Neumann, e.g., MAPHmlphg.
• The corresponding Generations rules of the above rules, e.g., 3457/357/5.

For non-Generations rules, four different notations are supported: * B/S notation (B3/S23) * S/B notation (23/3) * MAP strings for non-isotropic rules (MAPARYXfhZofugWaH7oaIDogBZofuhogOiAaIDogIAAgAAWaH7oaIDogGiA6ICAAIAAaIDogIAAgACAAIAAAAAAAA)

For Generations rules, four different notations are supported:

• B/S notation (B357/S3457/C5)
• The notation used by Golly (3457/357/5)
• The notation used by Catagolue (g5b357s3457)
• MAP strings for non-isotropic rules (MAPARYBFxZpF38WaRd/aZZ//hZpF39pln/+aZZ//pZp/ukWaRd/aZZ//mmWf/6Waf7paZZ//pZp/umWaf7paZbplg/5)

Please refer to Life Wiki for detailed definitions and notations of these rule strings.

Example:

```rust use ca_rules::ParseLife;

// Define a struct for your rule:

[derive(Debug, Eq, PartialEq)]

struct Rule { b: Vec, s: Vec, }

// Implement a parser trait for your rule: // The choice of the trait depends on the type of rules you want to parse. impl ParseLife for Rule { // Implement a function to construct the rule from b and s data: fn from_bs(b: Vec, s: Vec) -> Self { Rule { b, s } } }

// Then you can parse a rule string: let life = Rule::parserule("B3/S23").unwrap(); asserteq!( life, Rule { b: vec![3], s: vec![2, 3], } ) ```

For details, please refer to the doc.