radn-rs/src/testing.rs

98 lines
2.4 KiB
Rust

pub mod counted;
pub mod traced;
use std::{error::Error, fmt::Display, rc::Rc};
use sha2::{Digest, Sha256};
use crate::core::*;
use crate::func::*;
use crate::std::cast::*;
pub struct NoDiagnostic;
impl<T: Monad> Diagnostic<T> for NoDiagnostic {
fn after<'a, A>(fa: T::F<'a, A>, _event: &'a str) -> T::F<'a, A> {
fa
}
fn before<'a, A>(fa: T::F<'a, A>, _event: &'a str) -> T::F<'a, A> {
fa
}
fn wrapped<'a, A>(fa: T::F<'a, A>, _event: &'a str) -> T::F<'a, 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 {
TestLookupError::Typeless(typeless_error) => {
f.write_fmt(format_args!("typeless lookup failure: {}", typeless_error))
}
TestLookupError::Cast(cast_error) => {
f.write_fmt(format_args!("cast failure: {}", cast_error))
}
TestLookupError::EmptyResolverAccess(address) => f.write_fmt(format_args!(
"accessed an empty resolved at address {}.",
address
)),
}
}
}
impl<'a> Error for TestLookupError<'a> {}
impl Context for TestContextPlain {
type T = classes::solo::SoloClass;
type Fallible = classes::result::ResultFailAny;
type D = NoDiagnostic;
type LookupError<'a> = 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))
}
}
pub fn reparse<'a, A: Mentionable<'a, TestContextPlain>>(mentionable: Rc<A>) -> A {
let factory = mentionable.factory();
TypelessMentionable::from_typed(mentionable)
.cast(factory)
.expect("cast failed")
}