franklin-crypto 0.32.11

Cryptographic library for SNARK gadgets, based on sapling-crypto
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use crate::bellman::SynthesisError;

pub trait Assignment<T> {
    fn get(&self) -> Result<&T, SynthesisError>;
    fn grab(self) -> Result<T, SynthesisError>;
}

impl<T: Clone> Assignment<T> for Option<T> {
    fn get(&self) -> Result<&T, SynthesisError> {
        match self {
            Some(v) => Ok(v),
            None => Err(SynthesisError::AssignmentMissing),
        }
    }

    fn grab(self) -> Result<T, SynthesisError> {
        match self {
            Some(v) => Ok(v),
            None => Err(SynthesisError::AssignmentMissing),
        }
    }
}