litex-lang 0.9.68-beta

A simple formal proof language and verifier, learnable in 2 hours
Documentation 
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use crate::prelude::*;

impl Runtime {
    pub fn verify_atomic_fact(
        &mut self,
        fact: &AtomicFact,
        verify_state: &VerifyState,
    ) -> Result<StmtResult, RuntimeError> {
        if let Some(cached_result) =
            self.verify_fact_from_cache_using_display_string(&fact.clone().into())
        {
            return Ok(cached_result);
        }

        if !verify_state.well_defined_already_verified {
            if let Err(e) = self.verify_atomic_fact_well_defined(fact, verify_state) {
                return Err(
                    {
                        VerifyRuntimeError(RuntimeErrorStruct::new(
                Some(Fact::from(fact.clone()).into_stmt()),
                String::new(),
                fact.line_file(),
                Some(e),
                vec![],
            ))
            .into()
        },
                );
            }
        }

        let next_verify_state = verify_state.make_state_with_req_ok_set_to_true();

        match fact {
            AtomicFact::EqualFact(equal_fact) => {
                self.verify_equal_fact(equal_fact, &next_verify_state)
            }
            _ => self.verify_non_equational_atomic_fact(fact, &next_verify_state, true),
        }
    }
}