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Allow &[ty; _] to be cast into *ty

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This commit is contained in:
Sofia 2025-07-29 15:56:06 +03:00
parent baa068a371
commit 7234cad5f0
4 changed files with 34 additions and 3 deletions
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3
examples/macro_easy.reid
View File

@ -2,7 +2,8 @@ import std::String;
import std::print;
fn main() -> u8 {
// - TODO possibly allow to cast between &[ty] and *ty
let bytes = test_macro!("./macro_easy_file.txt");
print(String::new() + bytes.length());
return *bytes[0];
return (bytes as *u8)[0];
}

23
reid/src/codegen/mod.rs
View File

@ -1313,7 +1313,7 @@ impl mir::Expression {
Some(val)
} else {
match (&val.1, type_kind) {
(TypeKind::CodegenPtr(inner), TypeKind::UserPtr(_)) => match *inner.clone() {
(TypeKind::CodegenPtr(inner), TypeKind::UserPtr(ty2)) => match *inner.clone() {
TypeKind::UserPtr(_) => Some(StackValue(
val.0.derive(
scope
@ -1326,6 +1326,27 @@ impl mir::Expression {
),
TypeKind::CodegenPtr(Box::new(type_kind.clone())),
)),
TypeKind::Borrow(ty1, _) => match *ty1.clone() {
TypeKind::Array(ty1, _) => {
if ty1 == *ty2 {
Some(StackValue(
val.0.derive(
scope
.block
.build(Instr::BitCast(
val.instr(),
Type::Ptr(Box::new(type_kind.get_type(scope.type_values))),
))
.unwrap(),
),
TypeKind::CodegenPtr(Box::new(type_kind.clone())),
))
} else {
return Err(ErrorKind::Null);
}
}
_ => return Err(ErrorKind::Null),
},
_ => panic!(),
},
(TypeKind::UserPtr(_), TypeKind::UserPtr(_))

1
reid/src/mir/macros.rs
View File

@ -244,7 +244,6 @@ impl MacroFunction for TestMacro {
.parent()
.expect("Module path has no parent!")
.join(path);
dbg!(&path);
let contents = match std::fs::read(path) {
Ok(content) => content,

10
reid/src/mir/typecheck/mod.rs
View File

@ -256,6 +256,16 @@ impl TypeKind {
let other_cat = other.category();
match (self, other) {
(TypeKind::UserPtr(_), TypeKind::UserPtr(_)) => Ok(other.clone()),
(TypeKind::Borrow(ty1, _), TypeKind::UserPtr(ty2)) => match *ty1.clone() {
TypeKind::Array(ty1, _) => {
if ty1 == *ty2 {
Ok(other.clone())
} else {
Err(ErrorKind::NotCastableTo(self.clone(), other.clone()))
}
}
_ => Err(ErrorKind::NotCastableTo(self.clone(), other.clone())),
},
(TypeKind::Char, TypeKind::U8) => Ok(other.clone()),
(TypeKind::U8, TypeKind::Char) => Ok(other.clone()),
_ => match (&self_cat, &other_cat) {