Struct ParseState 

pub struct ParseState { /* private fields */ }

Parsing state.

Maintains the current state of parsing, including the trie of items and the chart.

Implementations

impl ParseState

pub fn process<F, G>( &mut self, agenda: &mut Vec<ActiveItem>, literal_callback: F, token_callback: G, )

where F: Fn(FId) -> Option<Const>, G: FnMut(&[String], ActiveItem),

Processes items with callbacks.

Advances the parsing agenda using provided callbacks for literals and tokens.

Arguments

• agenda - Mutable vector of active items.
• literal_callback - Callback for literals.
• token_callback - Callback for tokens.

pub fn new(concrete: GFConcrete, start_cat: String) -> Self

Creates a new parse state.

Initializes the parse state with starting active items based on the start category.

Arguments

• concrete - The concrete grammar.
• start_cat - The start category. There are five inference rules: Pre-Predict, Pre-Combine, Mark-Predict, Mark-Combine and Convert.

pub fn next(&mut self, token: &str) -> bool

Advances parsing with next token.

Arguments

• token - The next token.

Returns

True if parsing can continue, false if failed.

pub fn complete(&self, current_token: &str) -> CompletionAccumulator

Gets completions for partial token.

Arguments

• current_token - The partial current token.

Returns

CompletionAccumulator with possible completions.

pub fn extract_trees(&self) -> Vec<Fun>

Extracts parsed trees.

Reconstructs abstract trees from the chart after parsing.

Returns

Vector of unique parsed trees.

Trait Implementations

impl Clone for ParseState

fn clone(&self) -> ParseState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ParseState

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

Formats the value using the given formatter.