Struct GrammarNode

pub struct GrammarNode {
    pub key: Vec<u8>,
    pub val: Vec<u8>,
    pub children: BTreeMap<Vec<u8>, Vec<GrammarNode>>,
}

tree-based grammar data format

Fields

key: Vec<u8>

val: Vec<u8>

children: BTreeMap<Vec<u8>, Vec<GrammarNode>>

Implementations

impl GrammarNode

root node for grammar-based input constructions

pub fn from(s: &[u8]) -> GrammarNode

Derive a grammar tree from a byte vector. Grammar tree nodes are newline-separated. Parent nodes must be defined before child nodes. Each node line is defined as a key and value separated by ‘=’, e.g. key1=val.

Example: phone number grammar input

<phone-number>=<countrycode>(<area>) <exchange>-<line><ext>
# values may be left empty 
<countrycode>=
<countrycode>=+1 
<area>=<digit><digit><digit>
<exchange>=<digit><digit><digit>
<line>=<digit><digit><digit><digit>
# values may be repeated to increase the frequency of occurrence
<ext>=
<ext>=
<ext>=
<ext>=
<ext>=
<ext>=
<ext>=
<ext>=
<ext>=
<ext>=
<ext>=, ext. <digit><digit>
<digit>=0
<digit>=1
<digit>=2
<digit>=3
<digit>=4
<digit>=5
<digit>=6
<digit>=7
<digit>=8
<digit>=9

pub fn from_file(p: &PathBuf) -> GrammarNode

wrapper for GrammarNode::from() to load bytes from a grammar file

pub fn grammar_permutation(&self, mutation: &mut Mutation) -> Vec<u8>

generate a new mutation based on the defined grammar

pub fn display(&self, spaces: Option<usize>) -> String

Enumerate tree nodes as a string value

Trait Implementations

impl Clone for GrammarNode

fn clone(&self) -> GrammarNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GrammarNode

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

Formats the value using the given formatter.