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Improve error reporting for patterns not matching opaques

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This commit is contained in:
ayazhafiz 2022-02-24 23:37:33 -05:00
parent 4e27cdd21d
commit 07b1829732
7 changed files with 26 additions and 23 deletions
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15
compiler/constrain/src/pattern.rs
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@ -420,18 +420,21 @@ pub fn constrain_pattern(
constrain_pattern(env, &loc_pattern.value, loc_pattern.region, expected, state);
}
let pat_category = PatternCategory::Ctor(tag_name.clone());
let whole_con = Constraint::Present(
expected.clone().get_type(),
PresenceConstraint::IncludesTag(tag_name.clone(), argument_types.clone()),
PresenceConstraint::IncludesTag(
tag_name.clone(),
argument_types.clone(),
region,
pat_category.clone(),
),
);
let tag_con = Constraint::Present(
Type::Variable(*whole_var),
PresenceConstraint::Pattern(
region,
PatternCategory::Ctor(tag_name.clone()),
expected,
),
PresenceConstraint::Pattern(region, pat_category, expected),
);
state.vars.push(*whole_var);