TableShapedView

tree_fmt

Trait TableShapedView 

Source 
pub trait TableShapedView {
    // Required methods
    fn extract_headers(&self) -> Option<Vec<String>>;
    fn is_table_shaped(&self) -> bool;
    fn to_rows(&self) -> Vec<Vec<String>>;
}
Expand description

Trait for working with table-shaped trees

Table-shaped trees have structure:

root
├── row_1
│   ├── column_a: "value"
│   └── column_b: "value"
└── row_2
    ├── column_a: "value"
    └── column_b: "value"

Required Methods§

Source

fn extract_headers(&self) -> Option<Vec<String>>

Extract column headers from the first row’s children

Returns None if tree is empty or not table-shaped.

§Examples
use tree_fmt::{ RowBuilder, TableShapedView };

let tree = RowBuilder::new( vec![ "Name".into(), "Age".into() ] )
  .add_row( vec![ "Alice".into(), "30".into() ] )
  .build();

let headers = tree.extract_headers().unwrap();
assert_eq!( headers, vec![ "Name", "Age" ] );
Source

fn is_table_shaped(&self) -> bool

Check if tree has table structure (all rows have same child names)

§Examples
use tree_fmt::{ RowBuilder, TableShapedView };

let tree = RowBuilder::new( vec![ "Name".into() ] )
  .add_row( vec![ "Alice".into() ] )
  .build();

assert!( tree.is_table_shaped() );
Source

fn to_rows(&self) -> Vec<Vec<String>>

Extract row data as Vec<Vec>

Each row becomes a vector of cell values.

§Examples
use tree_fmt::{ RowBuilder, TableShapedView };

let tree = RowBuilder::new( vec![ "Name".into(), "Age".into() ] )
  .add_row( vec![ "Alice".into(), "30".into() ] )
  .build();

let rows = tree.to_rows();
assert_eq!( rows.len(), 1 );
assert_eq!( rows[ 0 ], vec![ "Alice", "30" ] );

Implementors§