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use std::collections::HashMap; use crate::io_extractors::{InputIterator, OutputIterator}; use crate::{CombineOperation, HasIO, OpType, Operation, WireValue}; pub trait Translatable { fn translate<I1, I2>(&self, win: I1, wout: I2) -> Option<Self> where Self: Sized, I1: Iterator<Item = usize>, I2: Iterator<Item = usize>; fn translate_from_hashmap<'a>( &'a self, translation_table: HashMap<usize, usize>, ) -> Option<Self> where Self: Sized + HasIO, InputIterator<'a, Self>: Iterator<Item = usize>, OutputIterator<'a, Self>: Iterator<Item = usize>, { self.translate( self.inputs() .map(|x| *translation_table.get(&x).unwrap_or(&x)), self.outputs() .map(|x| *translation_table.get(&x).unwrap_or(&x)), ) } fn translate_from_fn<'a>( &'a self, input_mapper: fn(usize) -> usize, output_mapper: fn(usize) -> usize, ) -> Option<Self> where Self: Sized + HasIO, InputIterator<'a, Self>: Iterator<Item = usize>, OutputIterator<'a, Self>: Iterator<Item = usize>, { self.translate( self.inputs().map(input_mapper), self.outputs().map(output_mapper), ) } } impl<T: WireValue> Translatable for Operation<T> { fn translate<'a, I1, I2>(&self, win: I1, wout: I2) -> Option<Self> where Self: Sized, I1: Iterator<Item = usize>, I2: Iterator<Item = usize>, { match self { Operation::Input(_) => Some(Operation::<T>::construct( OpType::Input(Operation::Input), win, wout, None, )), Operation::Random(_) => Some(Operation::<T>::construct( OpType::Input(Operation::Random), win, wout, None, )), Operation::Add(_, _, _) => Some(Operation::<T>::construct( OpType::Binary(Operation::Add), win, wout, None, )), Operation::AddConst(_, _, c) => Some(Operation::<T>::construct( OpType::BinaryConst(Operation::AddConst), win, wout, Some(*c), )), Operation::Sub(_, _, _) => Some(Operation::<T>::construct( OpType::Binary(Operation::Sub), win, wout, None, )), Operation::SubConst(_, _, c) => Some(Operation::<T>::construct( OpType::BinaryConst(Operation::SubConst), win, wout, Some(*c), )), Operation::Mul(_, _, _) => Some(Operation::<T>::construct( OpType::Binary(Operation::Mul), win, wout, None, )), Operation::MulConst(_, _, c) => Some(Operation::<T>::construct( OpType::BinaryConst(Operation::MulConst), win, wout, Some(*c), )), Operation::AssertZero(_) => Some(Operation::<T>::construct( OpType::Output(Operation::AssertZero), win, wout, None, )), Operation::Const(_, c) => Some(Operation::<T>::construct( OpType::InputConst(Operation::Const), win, wout, Some(*c), )), } } } impl Translatable for CombineOperation { fn translate<'a, I1, I2>(&self, mut win: I1, mut wout: I2) -> Option<Self> where Self: Sized, I1: Iterator<Item = usize>, I2: Iterator<Item = usize>, { match self { CombineOperation::GF2(op) => Some(CombineOperation::GF2( op.translate(win, wout) .expect("Could not translate underlying GF2 gate"), )), CombineOperation::Z64(op) => Some(CombineOperation::Z64( op.translate(win, wout) .expect("Could not translate underlying Z64 gate"), )), CombineOperation::B2A(_z64, _gf2) => Some(CombineOperation::B2A( wout.next().expect("B2A needs a Z64 output"), win.next().expect("B2A needs a GF2 input"), )), CombineOperation::SizeHint(_z64, _gf2) => None, } } }