Enum Node 

pub enum Node {
    Native(Series),
    Json {
        root: Arc<Value>,
        path: Vec<Step>,
    },
}

One place in a value: what a level of the drill shows, or one of its items.

Variants

Native(Series)

One value of a column, as a one-row slice: drilling copies nothing.

Json

A value in a JSON document parsed from text: the steps from its root.

Fields

root: Arc<Value>

path: Vec<Step>

Implementations

impl Node

pub fn json(&self) -> Option<&Value>

The JSON value at this node’s path.

pub fn shape(&self) -> Shape

pub fn len(&self) -> usize

How many fields, items or keys a level of this node lists.

pub fn is_empty(&self) -> bool

pub fn children(&self, start: usize, count: usize) -> Vec<(String, Node)>

count items from start, each with its label: a field’s or key’s name, or [i]. Only these are made, whatever the length.

pub fn child(&self, i: usize) -> Option<(String, Node)>

pub fn label_width(&self) -> usize

The widest label a level of this node lists, without walking a long list: a list’s last index is its widest, and only the first keys are measured.

pub fn with_text<R>(&self, f: impl FnOnce(&str) -> R) -> Option<R>

The text of a text value, for f; None for any other value.

pub fn opens(&self) -> bool

Whether Enter opens this node as a level: a struct, a list, an object or an array, or text that reads as a JSON object or array.

pub fn type_label(&self) -> String

The type as the item list names it.

pub fn color_dtype(&self) -> DataType

The type the item list colors this node’s name by.

pub fn table_columns(&self) -> Option<Vec<(String, DataType)>>

The columns a list of structs, or an array of objects, shows its items in, with the type that colors each name: the struct’s fields, or the first object’s keys. None for any other level.

pub fn cell(&self, column: &str) -> Option<Node>

One item’s value under column in a level shown as a table; None when the item has no such field or key.

Trait Implementations

impl Clone for Node

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Node

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

Formats the value using the given formatter.