Struct ssexp::ParsingContext

pub struct ParsingContext<T: Iterator<Item = char>> { /* fields omitted */ }

Used in parsing process for getting chars and calling the parsers.

Implementations

impl<T: Iterator<Item = char>> ParsingContext<T>

pub fn parse(&mut self, tokens: &mut Vec<Token>) -> Option<MacroHandle<'_, T>>

Parses the next symbol and inserts it into a specified token list. Then a handle for the next macro call is returned.

pub fn set(
    &mut self,
    char: char,
    value: Option<impl Parser<T> + 'static>
) -> Option<Rc<dyn Parser<T>>>

Binds a new parser to a character and returns some previous, if there was one defined, else returns None

pub fn insert(
    &mut self,
    char: char,
    value: Option<Rc<dyn Parser<T>>>
) -> Option<Rc<dyn Parser<T>>>

Binds a new parser to a character and returns some previous, if there was one defined, else returns None

pub fn push(&mut self, map: MacroMap<T>)

Replaces the current macro map with a new one.

pub fn pop(&mut self) -> Option<MacroMap<T>>

Removes the current macro map and uses the most recent one.