Struct DepthCounter 

pub struct DepthCounter { /* private fields */ }

Visitor that counts maximum depth reached.

Example

use hedl_core::visitor::{utils::DepthCounter, traverse, TraversalConfig};
use hedl_core::Document;

let doc = Document::new((1, 0));
let mut counter = DepthCounter::new();
traverse(&doc, &mut counter, &TraversalConfig::default());
assert_eq!(counter.max_depth(), 0);

Implementations

impl DepthCounter

pub fn new() -> Self

Create a new depth counter.

pub fn max_depth(&self) -> usize

Get the maximum depth reached.

Trait Implementations

impl Debug for DepthCounter

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

Formats the value using the given formatter.

impl Default for DepthCounter

fn default() -> DepthCounter

Returns the “default value” for a type.

impl Visitor for DepthCounter

fn visit_node( &mut self, _node: &Node, ctx: &VisitorContext<'_>, ) -> VisitDecision

Called when visiting a node (row) in a list.

fn visit_scalar( &mut self, _key: &str, _value: &Value, ctx: &VisitorContext<'_>, ) -> VisitDecision

Called when visiting a scalar value.

fn begin_document( &mut self, _doc: &Document, _ctx: &VisitorContext<'_>, ) -> VisitDecision

Called at the start of document traversal.

fn end_document( &mut self, _doc: &Document, _ctx: &VisitorContext<'_>, ) -> VisitDecision

Called at the end of document traversal.

fn begin_object( &mut self, _key: &str, _ctx: &VisitorContext<'_>, ) -> VisitDecision

Called before visiting an object’s children.

fn end_object(&mut self, _key: &str, _ctx: &VisitorContext<'_>) -> VisitDecision

Called after visiting an object’s children.

fn begin_list( &mut self, _key: &str, _list: &MatrixList, _ctx: &VisitorContext<'_>, ) -> VisitDecision

Called before visiting a list’s rows.

fn end_list( &mut self, _key: &str, _list: &MatrixList, _ctx: &VisitorContext<'_>, ) -> VisitDecision

Called after visiting a list’s rows.

fn begin_node_children( &mut self, _node: &Node, _ctx: &VisitorContext<'_>, ) -> VisitDecision

Called before visiting a node’s children.

fn end_node_children( &mut self, _node: &Node, _ctx: &VisitorContext<'_>, ) -> VisitDecision

Called after visiting a node’s children.

fn visit_reference( &mut self, _reference: &Reference, _ctx: &VisitorContext<'_>, ) -> VisitDecision

Called when visiting a reference value.

fn visit_expression( &mut self, _expr: &Expression, _ctx: &VisitorContext<'_>, ) -> VisitDecision

Called when visiting an expression value.

fn visit_tensor( &mut self, _tensor: &Tensor, _ctx: &VisitorContext<'_>, ) -> VisitDecision

Called when visiting a tensor value.