radn-rs/src/testing.rs

110 lines
2.7 KiB
Rust

pub mod counted;
pub mod traced;
use std::{error::Error, fmt::Display, rc::Rc};
use sha2::{Digest, Sha256};
use crate::func::{context::*, *};
use crate::rcore::*;
use crate::rstd::{cast::*, inject::*, typeless::*};
pub struct NoDiagnostic;
impl<'a, T: Monad<'a>> Diagnostic<'a, T> for NoDiagnostic {
fn after<'b, A>(fa: T::F<A>, _event: impl 'b + FnOnce() -> String) -> T::F<A> {
fa
}
fn before<'b, A>(fa: T::F<A>, _event: impl 'b + FnOnce() -> String) -> T::F<A> {
fa
}
fn wrapped<'b, A>(fa: T::F<A>, _event: impl 'b + FnOnce() -> String) -> T::F<A> {
fa
}
}
pub struct TestContextPlain;
#[derive(Debug)]
pub enum TestLookupError<'a> {
Typeless(TypelessError<'a>),
Cast(CastError<'a>),
EmptyResolverAccess(Address),
}
impl<'a> From<TypelessError<'a>> for TestLookupError<'a> {
fn from(value: TypelessError<'a>) -> Self {
Self::Typeless(value)
}
}
impl<'a> From<CastError<'a>> for TestLookupError<'a> {
fn from(value: CastError<'a>) -> Self {
Self::Cast(value)
}
}
impl<'a> Display for TestLookupError<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Self::Typeless(typeless_error) => {
write!(f, "typeless lookup failure: {}", typeless_error)
}
Self::Cast(cast_error) => {
write!(f, "cast failure: {}", cast_error)
}
Self::EmptyResolverAccess(address) => {
write!(f, "accessed an empty resolved at address {}", address)
}
}
}
}
impl<'a> Error for TestLookupError<'a> {}
impl<'a> FunctorContext<'a> for TestContextPlain {
type T = instances::solo::SoloInstance;
}
impl<'a> FallibleCtx<'a> for TestContextPlain {
type Fallible = instances::result::ResultFailAny;
}
impl<'a> Context<'a> for TestContextPlain {
type _Tm = Self::T;
type D = NoDiagnostic;
type LookupError = TestLookupError<'a>;
fn hash(s: &[u8]) -> Hash {
let mut hasher = Sha256::new();
hasher.update(s);
hasher.finalize().into()
}
}
pub struct EmptyResolver;
impl<'a> Resolver<'a, TestContextPlain> for EmptyResolver {
fn resolve(self: std::rc::Rc<Self>, address: Address) -> HashResolution<'a, TestContextPlain> {
Err(TestLookupError::EmptyResolverAccess(address))
}
}
struct EmptyInject;
impl<'a, Ctx: Context<'a>> Inject<'a, Ctx> for EmptyInject {
fn inject<A: 'a>(&self, fa: Wrapped<'a, Ctx, A>) -> Wrapped<'a, Ctx, A> {
fa
}
}
pub fn reparse<'a, A: Mentionable<'a, TestContextPlain>>(mentionable: Rc<A>) -> A {
Rc::new(EmptyInject)
.inject_mentionable(mentionable.as_ref())
.expect("re-parsing failed")
}