Struct BottomUpBuilder

pub struct BottomUpBuilder { /* private fields */ }

A builder for creating parse trees by a bottom-up walk over the tree nodes.

Implementations

impl BottomUpBuilder

pub fn new() -> BottomUpBuilder

Create a new builder.

pub fn finish(self) -> ParseTree

Completes the building process and yields a ParseTree. Panics if there's unmatched start_internal` calls.

pub fn shift(&mut self, symbol: Symbol, len: TextUnit)

Shifts a new leaf node to the stack.

pub fn reduce(&mut self, symbol: Symbol, n_nodes: usize)

Reduce top n_nodes from the stack to a new node.

Trait Implementations

impl Debug for BottomUpBuilder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for BottomUpBuilder

fn default() -> BottomUpBuilder

Returns the “default value” for a type.