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fake implementation of type_to_var for DelayedAlias

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Folkert 2022-03-14 20:22:38 +01:00
parent 00f3eaf2a1
commit f9bd46ecb8
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1 changed files with 36 additions and 5 deletions
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41
compiler/solve/src/solve.rs
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@ -1202,12 +1202,43 @@ fn type_to_variable<'a>(
} }
Type::DelayedAlias(AliasCommon { Type::DelayedAlias(AliasCommon {
symbol: _, symbol,
type_arguments: _, type_arguments,
lambda_set_variables: _, lambda_set_variables,
}) => { }) => {
// we have arrived let kind = AliasKind::Structural;
todo!()
let alias_variables = {
let length = type_arguments.len() + lambda_set_variables.len();
let new_variables = VariableSubsSlice::reserve_into_subs(subs, length);
for (target_index, (_, arg_type)) in
(new_variables.indices()).zip(type_arguments)
{
let copy_var = helper!(arg_type);
subs.variables[target_index] = copy_var;
}
let it = (new_variables.indices().skip(type_arguments.len()))
.zip(lambda_set_variables);
for (target_index, ls) in it {
let copy_var = helper!(&ls.0);
subs.variables[target_index] = copy_var;
}
AliasVariables {
variables_start: new_variables.start,
type_variables_len: type_arguments.len() as _,
all_variables_len: length as _,
}
};
// TODO
let alias_variable = subs.fresh_unnamed_flex_var();
let content = Content::Alias(*symbol, alias_variables, alias_variable, kind);
register_with_known_var(subs, destination, rank, pools, content)
} }
Type::Alias { Type::Alias {