Struct sise::TreeWriter

pub struct TreeWriter { /* fields omitted */ }

A writer that creates a tree of Node.

Example

use sise::sise_expr;
use sise::Writer as _;

let mut writer = sise::TreeWriter::new();

writer.begin_list(()).unwrap();
writer.write_atom("example", ()).unwrap();
writer.begin_list(()).unwrap();
writer.write_atom("1", ()).unwrap();
writer.write_atom("2", ()).unwrap();
writer.write_atom("3", ()).unwrap();
writer.end_list(()).unwrap();
writer.begin_list(()).unwrap();
writer.write_atom("a", ()).unwrap();
writer.write_atom("b", ()).unwrap();
writer.write_atom("c", ()).unwrap();
writer.end_list(()).unwrap();
writer.end_list(()).unwrap();
let result = writer.finish(()).unwrap();

let expected_result = sise_expr!(["example", ["1", "2", "3"], ["a", "b", "c"]]);
assert_eq!(result, expected_result);

Methods

impl TreeWriter

pub fn new() -> Self

Trait Implementations

impl Writer for TreeWriter

type Result = Node

Type of data returned by the writer.

type Error = Infallible

The error type that may be produced while writing.

type AtomOptions = ()

Type of options that can be passed to write_atom.

type BeginListOptions = ()

Type of options that can be passed to begin_list.

type EndListOptions = ()

Type of options that can be passed to end_list.

type FinishOptions = ()

Type of options that can be passed to finish.

fn write_atom(&mut self, atom: &str, _opts: ()) -> Result<(), Infallible>

Writes an atom.

fn begin_list(&mut self, _opts: ()) -> Result<(), Infallible>

Begins a list.

fn end_list(&mut self, _opts: ()) -> Result<(), Infallible>

Ends a list.

fn finish(self, _opts: ()) -> Result<Node, Infallible>

Consumes the writer and returns the result. It must be called only after the root node has been completely written.

impl Default for TreeWriter

fn default() -> Self

Returns the "default value" for a type.