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deal with aliases around number types

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Folkert 2022-05-21 21:28:31 +02:00
parent 99a879d795
commit fb37d925dc
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2 changed files with 22 additions and 11 deletions
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12
compiler/types/src/num.rs
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@ -12,8 +12,8 @@ pub enum NumericRange {
}
impl NumericRange {
pub fn contains_symbol(&self, symbol: Symbol) -> bool {
match symbol {
pub fn contains_symbol(&self, symbol: Symbol) -> Option<bool> {
let contains = match symbol {
Symbol::NUM_I8 => self.contains_int_width(IntWidth::I8),
Symbol::NUM_U8 => self.contains_int_width(IntWidth::U8),
Symbol::NUM_I16 => self.contains_int_width(IntWidth::I16),
@ -35,8 +35,12 @@ impl NumericRange {
true
}
_ => unreachable!("weird number symbol {:?}", symbol),
}
_ => {
return None;
}
};
Some(contains)
}
fn contains_float_width(&self, _width: FloatWidth) -> bool {

21
compiler/unify/src/unify.rs
View file

@ -452,14 +452,21 @@ fn check_valid_range(subs: &mut Subs, var: Variable, range: NumericRange) -> Out
let content = subs.get_content_without_compacting(var);
match content {
Content::Alias(symbol, _, _, _) => {
if !range.contains_symbol(*symbol) {
let outcome = Outcome {
mismatches: vec![Mismatch::TypeNotInRange],
must_implement_ability: Default::default(),
};
&Content::Alias(symbol, _, actual, _) => {
match range.contains_symbol(symbol) {
None => {
// symbol not recognized; go into the alias
return check_valid_range(subs, actual, range);
}
Some(false) => {
let outcome = Outcome {
mismatches: vec![Mismatch::TypeNotInRange],
must_implement_ability: Default::default(),
};
return outcome;
return outcome;
}
Some(true) => { /* fall through */ }
}
}