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core/type_inferencer: Allow both int32 and isize when indexing ndarray

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This commit is contained in:
David Mak 2024-03-26 14:46:49 +08:00
parent a77fd213e0
commit f50a5f0345
1 changed files with 21 additions and 2 deletions
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23
nac3core/src/typecheck/type_inferencer/mod.rs
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@ -13,7 +13,7 @@ use crate::{
TopLevelContext,
},
};
use itertools::izip;
use itertools::{Itertools, izip};
use nac3parser::ast::{
self,
fold::{self, Fold},
@ -59,6 +59,16 @@ pub struct PrimitiveStore {
}
impl PrimitiveStore {
/// Returns a [`Type`] representing a signed representation of `size_t`.
#[must_use]
pub fn isize(&self) -> Type {
match self.size_t {
32 => self.int32,
64 => self.int64,
_ => unreachable!(),
}
}
/// Returns a [Type] representing `size_t`.
#[must_use]
pub fn usize(&self) -> Type {
@ -1381,7 +1391,16 @@ impl<'a> Inferencer<'a> {
TypeEnum::TObj { obj_id, .. } if *obj_id == PRIMITIVE_DEF_IDS.ndarray => {
let (_, ndims) = unpack_ndarray_tvars(self.unifier, value.custom.unwrap());
self.constrain(slice.custom.unwrap(), self.primitives.usize(), &slice.location)?;
let valid_index_tys = [
self.primitives.int32,
self.primitives.isize(),
].into_iter().unique().collect_vec();
let valid_index_ty = self.unifier.get_fresh_var_with_range(
valid_index_tys.as_slice(),
None,
None,
).0;
self.constrain(slice.custom.unwrap(), valid_index_ty, &slice.location)?;
self.infer_subscript_ndarray(value, ty, ndims)
}
_ => unreachable!(),