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use crate::bits::Boolean;
use snarkvm_fields::Field;
use snarkvm_r1cs::{errors::SynthesisError, ConstraintSystem};
pub trait CondSelectGadget<F: Field>
where
Self: Sized,
{
fn conditionally_select<CS: ConstraintSystem<F>>(
cs: CS,
cond: &Boolean,
first: &Self,
second: &Self,
) -> Result<Self, SynthesisError>;
fn cost() -> usize;
}
pub trait TwoBitLookupGadget<F: Field>
where
Self: Sized,
{
type TableConstant;
fn two_bit_lookup<CS: ConstraintSystem<F>>(
cs: CS,
bits: &[Boolean],
constants: &[Self::TableConstant],
) -> Result<Self, SynthesisError>;
fn cost() -> usize;
}
pub trait ThreeBitCondNegLookupGadget<F: Field>
where
Self: Sized,
{
type TableConstant;
fn three_bit_cond_neg_lookup<CS: ConstraintSystem<F>>(
cs: CS,
bits: &[Boolean],
b0b1: &Boolean,
constants: &[Self::TableConstant],
) -> Result<Self, SynthesisError>;
fn cost() -> usize;
}