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use std::ops::Deref; use std::sync::Arc; use anyhow::Result; use crate::fst_properties::FstProperties; use crate::fst_traits::{CoreFst, ExpandedFst, Fst, FstIntoIterator, FstIterator, StateIterator}; use crate::semirings::Semiring; use crate::SymbolTable; impl<W: Semiring, F: Fst<W>> Fst<W> for Arc<F> { fn input_symbols(&self) -> Option<&Arc<SymbolTable>> { self.deref().input_symbols() } fn output_symbols(&self) -> Option<&Arc<SymbolTable>> { self.deref().output_symbols() } fn set_input_symbols(&mut self, _symt: Arc<SymbolTable>) { unimplemented!() } fn set_output_symbols(&mut self, _symt: Arc<SymbolTable>) { unimplemented!() } fn take_input_symbols(&mut self) -> Option<Arc<SymbolTable>> { unimplemented!() } fn take_output_symbols(&mut self) -> Option<Arc<SymbolTable>> { unimplemented!() } } impl<W: Semiring, F: ExpandedFst<W>> ExpandedFst<W> for Arc<F> { fn num_states(&self) -> usize { self.deref().num_states() } } impl<W: Semiring, F: CoreFst<W>> CoreFst<W> for Arc<F> { type TRS = F::TRS; fn start(&self) -> Option<usize> { self.deref().start() } fn final_weight(&self, state_id: usize) -> Result<Option<W>> { self.deref().final_weight(state_id) } unsafe fn final_weight_unchecked(&self, state_id: usize) -> Option<W> { self.deref().final_weight_unchecked(state_id) } fn num_trs(&self, s: usize) -> Result<usize> { self.deref().num_trs(s) } unsafe fn num_trs_unchecked(&self, s: usize) -> usize { self.deref().num_trs_unchecked(s) } fn get_trs(&self, state_id: usize) -> Result<Self::TRS> { self.deref().get_trs(state_id) } unsafe fn get_trs_unchecked(&self, state_id: usize) -> Self::TRS { self.deref().get_trs_unchecked(state_id) } fn properties(&self) -> FstProperties { self.deref().properties() } fn num_input_epsilons(&self, state: usize) -> Result<usize> { self.deref().num_input_epsilons(state) } fn num_output_epsilons(&self, state: usize) -> Result<usize> { self.deref().num_output_epsilons(state) } } impl<'a, W: Semiring + 'a, F: FstIterator<'a, W>> FstIterator<'a, W> for Arc<F> { type FstIter = F::FstIter; fn fst_iter(&'a self) -> Self::FstIter { self.deref().fst_iter() } } impl<'a, F: StateIterator<'a>> StateIterator<'a> for Arc<F> { type Iter = F::Iter; fn states_iter(&'a self) -> Self::Iter { self.deref().states_iter() } } impl<W: Semiring, F: FstIntoIterator<W>> FstIntoIterator<W> for Arc<F> { type TrsIter = F::TrsIter; type FstIter = F::FstIter; fn fst_into_iter(self) -> Self::FstIter { unimplemented!() } }