Enum DecisionNode 

pub enum DecisionNode {
    Leaf(String),
    Branch {
        key: String,
        val: String,
        yes_branch: Box<DecisionNode>,
        no_branch: Box<DecisionNode>,
    },
}

A simple decision tree node for rule dispatching.

Variants

Leaf(String)

A leaf with an action string.

Branch

An interior node: check key equals val → yes_branch, else no_branch.

Fields

key: String

val: String

yes_branch: Box<DecisionNode>

no_branch: Box<DecisionNode>

Implementations

impl DecisionNode

pub fn evaluate(&self, ctx: &HashMap<String, String>) -> &str

Evaluates the decision tree with the given context.

pub fn depth(&self) -> usize

Returns the depth of the decision tree.