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Implement List.map4

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This commit is contained in:
Kevin Sjöberg 2021-10-31 08:08:24 +01:00
parent b29a029a33
commit f9ed060e49
16 changed files with 419 additions and 16 deletions
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21
compiler/builtins/src/std.rs
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@ -930,6 +930,27 @@ pub fn types() -> MutMap<Symbol, (SolvedType, Region)> {
)
};
{
let_tvars! {a, b, c, d, e, cvar};
// map4 : List a, List b, List c, List d, (a, b, c, d -> e) -> List e
add_top_level_function_type!(
Symbol::LIST_MAP4,
vec![
list_type(flex(a)),
list_type(flex(b)),
list_type(flex(c)),
list_type(flex(d)),
closure(
vec![flex(a), flex(b), flex(c), flex(d)],
cvar,
Box::new(flex(e))
),
],
Box::new(list_type(flex(e))),
)
};
// append : List elem, elem -> List elem
add_top_level_function_type!(
Symbol::LIST_APPEND,