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add variable to list

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stores the list type, so we can know whether it is unique
This commit is contained in:
Folkert 2020-08-10 21:05:57 +02:00
parent 4de573b54b
commit b4c5c2f793
7 changed files with 118 additions and 30 deletions
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8
compiler/constrain/src/uniq.rs
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@ -639,6 +639,7 @@ pub fn constrain_expr(
exists(vars, And(arg_cons))
}
List {
list_var,
elem_var,
loc_elems,
} => {
@ -676,9 +677,12 @@ pub fn constrain_expr(
}
let inferred = list_type(Bool::variable(uniq_var), entry_type);
constraints.push(Eq(inferred, expected, Category::List, region));
constraints.push(Eq(inferred, expected.clone(), Category::List, region));
exists(vec![*elem_var, uniq_var], And(constraints))
let stored = Type::Variable(*list_var);
constraints.push(Eq(stored, expected, Category::Storage, region));
exists(vec![*elem_var, *list_var, uniq_var], And(constraints))
}
}
Var(symbol) => {