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Add typecheck/infer for pointers

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Sofia 2025-07-21 13:29:19 +03:00
parent 3b43689650
commit a49105b07a
4 changed files with 16 additions and 12 deletions
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3
reid/src/mir/implement.rs
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@ -397,6 +397,9 @@ impl Collapsable for TypeKind {
)) ))
} }
} }
(TypeKind::Ptr(val1), TypeKind::Ptr(val2)) => {
Ok(TypeKind::Ptr(Box::new(val1.collapse_into(val2)?)))
}
_ => Err(ErrorKind::TypesIncompatible(self.clone(), other.clone())), _ => Err(ErrorKind::TypesIncompatible(self.clone(), other.clone())),
} }
} }

21
reid/src/mir/typecheck.rs
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@ -534,16 +534,17 @@ impl Expression {
// TODO it could be possible to check length against constants.. // TODO it could be possible to check length against constants..
let expr_t = expression.typecheck(state, typerefs, hint_t)?; let expr_t = expression.typecheck(state, typerefs, hint_t)?;
if let TypeKind::Array(inferred_ty, _) = expr_t { match expr_t {
let ty = state.or_else( TypeKind::Array(inferred_ty, _) | TypeKind::Ptr(inferred_ty) => {
elem_ty.resolve_ref(typerefs).collapse_into(&inferred_ty), let ty = state.or_else(
TypeKind::Vague(Vague::Unknown), elem_ty.resolve_ref(typerefs).collapse_into(&inferred_ty),
self.1, TypeKind::Vague(Vague::Unknown),
); self.1,
*elem_ty = ty.clone(); );
Ok(ty) *elem_ty = ty.clone();
} else { Ok(ty)
Err(ErrorKind::TriedIndexingNonArray(expr_t)) }
_ => Err(ErrorKind::TriedIndexingNonArray(expr_t)),
} }
} }
ExprKind::Array(expressions) => { ExprKind::Array(expressions) => {

2
reid/src/mir/typeinference.rs
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@ -267,7 +267,7 @@ impl Expression {
// need for further resolution. // need for further resolution.
let kind = expr_ty.resolve_weak().unwrap(); let kind = expr_ty.resolve_weak().unwrap();
match kind { match kind {
Array(type_kind, _) => { Array(type_kind, _) | Ptr(type_kind) => {
let elem_ty = type_refs.from_type(&type_kind).unwrap(); let elem_ty = type_refs.from_type(&type_kind).unwrap();
*index_ty = elem_ty.as_type().clone(); *index_ty = elem_ty.as_type().clone();
Ok(elem_ty) Ok(elem_ty)

2
reid_src/ptr.reid
View File

@ -3,7 +3,7 @@
extern fn malloc(size: u64) -> *u8; extern fn malloc(size: u64) -> *u8;
fn main() -> u16 { fn main() -> u8 {
let ptr = malloc(4); let ptr = malloc(4);
return ptr[0]; return ptr[0];