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use EitherIndex<Type, Variable> to halve number of types stored

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Folkert 2022-03-13 01:46:49 +01:00
parent da03b0c2b3
commit b3d9f9c2de
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3 changed files with 69 additions and 34 deletions
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47
compiler/solve/src/solve.rs
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@ -414,11 +414,18 @@ fn solve(
copy
}
Eq(type_index, expectation_index, category_index, region) => {
let typ = &constraints.types[type_index.index()];
let expectation = &constraints.expectations[expectation_index.index()];
let category = &constraints.categories[category_index.index()];
let actual = type_to_var(subs, rank, pools, cached_aliases, typ);
let actual = either_type_index_to_var(
constraints,
subs,
rank,
pools,
cached_aliases,
*type_index,
);
let expectation = &constraints.expectations[expectation_index.index()];
let expected = type_to_var(
subs,
rank,
@ -457,11 +464,16 @@ fn solve(
}
}
Store(source_index, target, _filename, _linenr) => {
let source = &constraints.types[source_index.index()];
// a special version of Eq that is used to store types in the AST.
// IT DOES NOT REPORT ERRORS!
let actual = type_to_var(subs, rank, pools, cached_aliases, source);
let actual = either_type_index_to_var(
constraints,
subs,
rank,
pools,
cached_aliases,
*source_index,
);
let target = *target;
match unify(subs, actual, target, Mode::EQ) {
@ -572,11 +584,18 @@ fn solve(
}
Pattern(type_index, expectation_index, category_index, region)
| PatternPresence(type_index, expectation_index, category_index, region) => {
let typ = &constraints.types[type_index.index()];
let expectation = &constraints.pattern_expectations[expectation_index.index()];
let category = &constraints.pattern_categories[category_index.index()];
let actual = type_to_var(subs, rank, pools, cached_aliases, typ);
let actual = either_type_index_to_var(
constraints,
subs,
rank,
pools,
cached_aliases,
*type_index,
);
let expectation = &constraints.pattern_expectations[expectation_index.index()];
let expected = type_to_var(
subs,
rank,
@ -700,9 +719,15 @@ fn solve(
}
}
IsOpenType(type_index) => {
let typ = &constraints.types[type_index.index()];
let actual = either_type_index_to_var(
constraints,
subs,
rank,
pools,
cached_aliases,
*type_index,
);
let actual = type_to_var(subs, rank, pools, cached_aliases, typ);
let mut new_desc = subs.get(actual);
match new_desc.content {
Content::Structure(FlatType::TagUnion(tags, _)) => {