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Split ListLen into ListLenU64 and ListLenUsize

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The usize one gets used internally for things like
pattern matches. This is both more efficient (means
they don't have to do unnecessary casts) and also
less error-prone due to e.g. comparing length to
capacity, which is usize.
This commit is contained in:
Richard Feldman 2024-02-14 20:41:52 -05:00
parent a15cc0589c
commit ada83561e5
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17 changed files with 88 additions and 48 deletions
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4
crates/compiler/load_internal/src/file.rs
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@ -4703,7 +4703,7 @@ fn synth_list_len_type(subs: &mut Subs) -> Variable {
Content::Structure(FlatType::Apply(Symbol::LIST_LIST, a_slice)),
);
let fn_var = synth_import(subs, Content::Error);
let solved_list_len = UnionLabels::insert_into_subs(subs, [(Symbol::LIST_LEN, [])]);
let solved_list_len = UnionLabels::insert_into_subs(subs, [(Symbol::LIST_LEN_U64, [])]);
let clos_list_len = synth_import(
subs,
Content::LambdaSet(LambdaSet {
@ -4757,7 +4757,7 @@ pub fn add_imports(
// Num needs List.len, but List imports Num.
let list_len_type_var = synth_list_len_type(subs);
let list_len_type_index = constraints.push_variable(list_len_type_var);
def_types.push((Symbol::LIST_LEN, Loc::at_zero(list_len_type_index)));
def_types.push((Symbol::LIST_LEN_U64, Loc::at_zero(list_len_type_index)));
import_variables.push(list_len_type_var);
}