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store Str.Str type in a compact way

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Folkert 2022-03-19 20:49:39 +01:00
parent 7589ab0c95
commit 9ac194a3b3
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1 changed files with 9 additions and 1 deletions
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10
compiler/can/src/constraint.rs
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@ -41,7 +41,11 @@ impl Constraints {
let includes_tags = Vec::new(); let includes_tags = Vec::new();
let strings = Vec::new(); let strings = Vec::new();
types.extend([Type::EmptyRec, Type::EmptyTagUnion]); types.extend([
Type::EmptyRec,
Type::EmptyTagUnion,
Type::Apply(Symbol::STR_STR, vec![], Region::zero()),
]);
categories.extend([ categories.extend([
Category::Record, Category::Record,
@ -91,6 +95,7 @@ impl Constraints {
pub const EMPTY_RECORD: Index<Type> = Index::new(0); pub const EMPTY_RECORD: Index<Type> = Index::new(0);
pub const EMPTY_TAG_UNION: Index<Type> = Index::new(1); pub const EMPTY_TAG_UNION: Index<Type> = Index::new(1);
pub const STR: Index<Type> = Index::new(2);
pub const CATEGORY_RECORD: Index<Category> = Index::new(0); pub const CATEGORY_RECORD: Index<Category> = Index::new(0);
pub const CATEGORY_FOREIGNCALL: Index<Category> = Index::new(1); pub const CATEGORY_FOREIGNCALL: Index<Category> = Index::new(1);
@ -124,6 +129,9 @@ impl Constraints {
match typ { match typ {
Type::EmptyRec => EitherIndex::from_left(Self::EMPTY_RECORD), Type::EmptyRec => EitherIndex::from_left(Self::EMPTY_RECORD),
Type::EmptyTagUnion => EitherIndex::from_left(Self::EMPTY_TAG_UNION), Type::EmptyTagUnion => EitherIndex::from_left(Self::EMPTY_TAG_UNION),
Type::Apply(Symbol::STR_STR, args, _) if args.is_empty() => {
EitherIndex::from_left(Self::STR)
}
Type::Variable(var) => Self::push_type_variable(var), Type::Variable(var) => Self::push_type_variable(var),
other => { other => {
let index: Index<Type> = Index::push_new(&mut self.types, other); let index: Index<Type> = Index::push_new(&mut self.types, other);