Struct Remap 

pub struct Remap<'a> { /* private fields */ }

Remaps symbols and removes unused symbols.

Implementations

impl<'a> Remap<'a>

pub fn new(grammar: &'a mut Cfg) -> Self

Creates Remap to record information about remapped symbols.

pub fn remove_unused_symbols(&mut self)

Removes unused symbols.

pub fn reorder_symbols<F>(&mut self, f: F)

where F: Fn(Symbol, Symbol) -> Ordering,

Remaps symbols to satisfy given ordering constraints. The argument must be a function that gives total order.

pub fn remap_symbols<F>(&mut self, map: F)

where F: FnMut(Symbol) -> Symbol,

Translates symbols in rules to new symbol IDs.

Translates those inside wrapped_roots as well.

pub fn get_mapping(self) -> Mapping

Get the mapping.