Trait cfg::rule_container::RuleContainer
source · pub trait RuleContainer: Sized {
// Required methods
fn sym_source(&self) -> &SymbolSource;
fn sym_source_mut(&mut self) -> &mut SymbolSource;
fn retain<F>(&mut self, f: F)
where F: FnMut(Symbol, &[Symbol], HistoryId) -> bool;
fn add_rule(&mut self, lhs: Symbol, rhs: &[Symbol], history: HistoryId);
fn history_graph(&self) -> &HistoryGraph;
fn add_history_node(&mut self, node: HistoryNode) -> HistoryId;
// Provided methods
fn sym<T>(&mut self) -> T
where T: SymbolContainer { ... }
fn next_sym(&mut self) -> Symbol { ... }
fn num_syms(&self) -> usize { ... }
fn rule(&mut self, lhs: Symbol) -> RuleBuilder<&mut Self> { ... }
fn precedenced_rule(
&mut self,
lhs: Symbol
) -> PrecedencedRuleBuilder<&mut Self> { ... }
}Expand description
Trait for rule and symbol containers.
Required Methods§
sourcefn sym_source(&self) -> &SymbolSource
fn sym_source(&self) -> &SymbolSource
Returns an immutable reference to the grammar’s symbol source.
sourcefn sym_source_mut(&mut self) -> &mut SymbolSource
fn sym_source_mut(&mut self) -> &mut SymbolSource
Returns a mutable reference to the grammar’s symbol source.
sourcefn retain<F>(&mut self, f: F)where
F: FnMut(Symbol, &[Symbol], HistoryId) -> bool,
fn retain<F>(&mut self, f: F)where F: FnMut(Symbol, &[Symbol], HistoryId) -> bool,
Retains only the rules specified by the predicate.
In other words, removes all rules rule for which f(&rule) returns false.
sourcefn add_rule(&mut self, lhs: Symbol, rhs: &[Symbol], history: HistoryId)
fn add_rule(&mut self, lhs: Symbol, rhs: &[Symbol], history: HistoryId)
Inserts a rule with lhs and rhs on its LHS and RHS. The rule carries history.
fn history_graph(&self) -> &HistoryGraph
fn add_history_node(&mut self, node: HistoryNode) -> HistoryId
Provided Methods§
sourcefn sym<T>(&mut self) -> Twhere
T: SymbolContainer,
fn sym<T>(&mut self) -> Twhere T: SymbolContainer,
Returns generated symbols.
sourcefn rule(&mut self, lhs: Symbol) -> RuleBuilder<&mut Self>
fn rule(&mut self, lhs: Symbol) -> RuleBuilder<&mut Self>
Starts building a new rule.
sourcefn precedenced_rule(&mut self, lhs: Symbol) -> PrecedencedRuleBuilder<&mut Self>
fn precedenced_rule(&mut self, lhs: Symbol) -> PrecedencedRuleBuilder<&mut Self>
Starts building a new precedenced rule.
Object Safety§
This trait is not object safe.