Enum sise::NodeReadUtil

pub enum NodeReadUtil<'a, R: Reader> {
    Atom(AtomReadUtil<R>),
    List(ListReadUtil<'a, R>),
}

Utility to read nodes from a Reader.

Variants

Atom(AtomReadUtil<R>)

List(ListReadUtil<'a, R>)

Methods

impl<'a, R: Reader> NodeReadUtil<'a, R>

pub fn new(reader: &'a mut R) -> Result<Self, R::Error>

Reads from reader and builds a ReadUtil::Atom or ReadUtil::List according to the result. Panics if the reader returns ReadItemKind::ListEnding.

pub fn expect_atom(
    self
) -> Result<AtomReadUtil<R>, ReadUtilError<R::Error, R::Pos>>

Consumes self and returns an AtomReadUtil if it is an atom, otherwise it returns a ReadUtilError::ExpectedAtom.

Example

let src_data = b"example";
let mut parser = sise::Parser::new(src_data);
let mut node_read_util = sise::NodeReadUtil::new(&mut parser).unwrap();
let atom_read_util = node_read_util.expect_atom().unwrap();
assert_eq!(atom_read_util.into_atom(), "example");

pub fn expect_list(
    self
) -> Result<ListReadUtil<'a, R>, ReadUtilError<R::Error, R::Pos>>

Consumes self and returns an AtomReadUtil if it is a list, otherwise it returns a ReadUtilError::ExpectedListBeginning.

Example

let src_data = b"()";
let mut parser = sise::Parser::new(src_data);
let node_read_util = sise::NodeReadUtil::new(&mut parser).unwrap();
let mut list_read_util = node_read_util.expect_list().unwrap();