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add When pattern errors

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This commit is contained in:
Folkert 2020-04-07 18:06:00 +02:00
parent 2d1a1621c3
commit 7f999a06f3
7 changed files with 276 additions and 35 deletions
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28
compiler/solve/src/solve.rs
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@ -250,9 +250,15 @@ fn solve(
state
}
Pattern(_region, _category, typ, expected) => {
Pattern(region, category, typ, expectation) => {
let actual = type_to_var(subs, rank, pools, cached_aliases, typ);
let expected = type_to_var(subs, rank, pools, cached_aliases, expected.get_type_ref());
let expected = type_to_var(
subs,
rank,
pools,
cached_aliases,
expectation.get_type_ref(),
);
match unify(subs, actual, expected) {
Success(vars) => {
@ -260,10 +266,20 @@ fn solve(
state
}
other => todo!(
"the case where unify for Pattern was unsuccessful with {:?}",
other
),
Failure(vars, actual_type, expected_type) => {
introduce(subs, rank, pools, &vars);
let problem = TypeError::BadPattern(
*region,
category.clone(),
actual_type,
expectation.clone().replace(expected_type),
);
problems.push(problem);
state
}
}
}
Let(let_con) => {