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First pass at expectations taking a type index

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Ayaz Hafiz 2022-10-25 11:01:53 -05:00
parent 6dc6386f77
commit 2a4fca7034
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7 changed files with 379 additions and 272 deletions
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7
crates/compiler/constrain/src/module.rs
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@ -69,13 +69,15 @@ fn constrain_symbols_from_requires(
// Otherwise, this symbol comes from an app module - we want to check that the type
// provided by the app is in fact what the package module requires.
let arity = loc_type.value.arity();
let typ = loc_type.value;
let type_index = constraints.push_type(typ);
let expected = constraints.push_expected_type(Expected::FromAnnotation(
loc_symbol.map(|&s| Pattern::Identifier(s)),
arity,
AnnotationSource::RequiredSymbol {
region: loc_type.region,
},
loc_type.value,
type_index,
));
let provided_eq_requires_constr =
constraints.lookup(loc_symbol.value, expected, loc_type.region);
@ -120,8 +122,9 @@ pub fn frontload_ability_constraints(
let rigid_variables = vars.rigid_vars.iter().chain(vars.able_vars.iter()).copied();
let infer_variables = vars.flex_vars.iter().copied();
let signature_index = constraints.push_type(signature.clone());
let signature_expectation =
constraints.push_expected_type(Expected::NoExpectation(signature.clone()));
constraints.push_expected_type(Expected::NoExpectation(signature_index));
def_pattern_state
.constraints