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I don't understand this piece of software at all
This commit is contained in:
Lawrence Bethlenfalvy
2024-12-31 00:03:39 +01:00
parent 3a3ae98aff
commit e780969c6c
42 changed files with 1119 additions and 498 deletions
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55
orchid-host/src/expr.rs
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@@ -6,10 +6,10 @@ use std::sync::{Arc, RwLock};
use hashbrown::HashMap;
use lazy_static::lazy_static;
use orchid_base::error::OrcErrv;
use orchid_base::interner::deintern;
use orchid_base::location::Pos;
use orchid_base::match_mapping;
use orchid_base::name::Sym;
use orchid_base::tree::AtomTok;
use orchid_base::tree::AtomRepr;
use crate::api;
use crate::extension::AtomHand;
@@ -41,12 +41,12 @@ impl Expr {
pub fn resolve(tk: api::ExprTicket) -> Option<Self> {
KNOWN_EXPRS.read().unwrap().get(&tk).cloned()
}
pub fn from_api(api: api::Expression, ctx: &mut ExprParseCtx) -> Self {
pub fn from_api(api: &api::Expression, ctx: &mut ExprParseCtx) -> Self {
if let api::ExpressionKind::Slot(tk) = &api.kind {
return Self::resolve(*tk).expect("Invalid slot");
}
Self {
kind: Arc::new(RwLock::new(ExprKind::from_api(api.kind, ctx))),
kind: Arc::new(RwLock::new(ExprKind::from_api(&api.kind, ctx))),
is_canonical: Arc::default(),
pos: Pos::from_api(&api.location),
}
@@ -81,24 +81,24 @@ pub enum ExprKind {
Seq(Expr, Expr),
Call(Expr, Expr),
Atom(AtomHand),
Argument,
Arg,
Lambda(Option<PathSet>, Expr),
Bottom(OrcErrv),
Const(Sym),
}
impl ExprKind {
pub fn from_api(api: api::ExpressionKind, ctx: &mut ExprParseCtx) -> Self {
use api::ExpressionKind as K;
match api {
K::Slot(_) => panic!("Handled in Expr"),
K::Lambda(id, b) => ExprKind::Lambda(PathSet::from_api(id, &b), Expr::from_api(*b, ctx)),
K::Arg(_) => ExprKind::Argument,
K::Bottom(b) => ExprKind::Bottom(OrcErrv::from_api(&b)),
K::Call(f, x) => ExprKind::Call(Expr::from_api(*f, ctx), Expr::from_api(*x, ctx)),
K::Const(c) => ExprKind::Const(Sym::from_tok(deintern(c)).unwrap()),
K::NewAtom(a) => ExprKind::Atom(AtomHand::from_api(a)),
K::Seq(a, b) => ExprKind::Seq(Expr::from_api(*a, ctx), Expr::from_api(*b, ctx)),
}
pub fn from_api(api: &api::ExpressionKind, ctx: &mut ExprParseCtx) -> Self {
match_mapping!(api, api::ExpressionKind => ExprKind {
Lambda(id => PathSet::from_api(*id, api), b => Expr::from_api(b, ctx)),
Bottom(b => OrcErrv::from_api(b)),
Call(f => Expr::from_api(f, ctx), x => Expr::from_api(x, ctx)),
Const(c => Sym::from_api(*c)),
Seq(a => Expr::from_api(a, ctx), b => Expr::from_api(b, ctx)),
} {
api::ExpressionKind::Arg(_) => ExprKind::Arg,
api::ExpressionKind::NewAtom(a) => ExprKind::Atom(AtomHand::from_api(a.clone())),
api::ExpressionKind::Slot(_) => panic!("Handled in Expr"),
})
}
}
@@ -121,19 +121,20 @@ impl PathSet {
self.steps.push_front(step);
self
}
pub fn from_api(id: u64, b: &api::Expression) -> Option<Self> {
pub fn from_api(id: u64, api: &api::ExpressionKind) -> Option<Self> {
use api::ExpressionKind as K;
match &b.kind {
match &api {
K::Arg(id2) => (id == *id2).then(|| Self { steps: VecDeque::new(), next: None }),
K::Bottom(_) | K::Const(_) | K::NewAtom(_) | K::Slot(_) => None,
K::Lambda(_, b) => Self::from_api(id, b),
K::Call(l, r) | K::Seq(l, r) => match (Self::from_api(id, l), Self::from_api(id, r)) {
(Some(a), Some(b)) =>
Some(Self { steps: VecDeque::new(), next: Some((Box::new(a), Box::new(b))) }),
(Some(l), None) => Some(l.after(Step::Left)),
(None, Some(r)) => Some(r.after(Step::Right)),
(None, None) => None,
},
K::Lambda(_, b) => Self::from_api(id, &b.kind),
K::Call(l, r) | K::Seq(l, r) =>
match (Self::from_api(id, &l.kind), Self::from_api(id, &r.kind)) {
(Some(a), Some(b)) =>
Some(Self { steps: VecDeque::new(), next: Some((Box::new(a), Box::new(b))) }),
(Some(l), None) => Some(l.after(Step::Left)),
(None, Some(r)) => Some(r.after(Step::Right)),
(None, None) => None,
},
}
}
}