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fix condition to account for tail presence

This commit is contained in:
microproofs 2024-01-23 16:00:06 -05:00 committed by Kasey
parent 3c81ebf137
commit 36a0b317ad
1 changed files with 11 additions and 5 deletions
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16
crates/aiken-lang/src/gen_uplc/builder.rs
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@ -1523,7 +1523,7 @@ pub fn convert_type_to_data(term: Term<Name>, field_type: &Rc<Type>) -> Term<Nam
pub fn list_access_to_uplc(
names_types_ids: &[(String, Rc<Type>, u64)],
tail: bool,
tail_present: bool,
term: Term<Name>,
is_list_accessor: bool,
expect_level: ExpectLevel,
@ -1539,7 +1539,7 @@ pub fn list_access_to_uplc(
// If the the is just discards and check_last_item then we check for empty list
if no_tailing_discards.is_empty()
&& !tail
&& !tail_present
&& matches!(expect_level, ExpectLevel::Full | ExpectLevel::Items)
{
return Term::var("empty_list")
@ -1553,7 +1553,7 @@ pub fn list_access_to_uplc(
let no_tailing_len = no_tailing_discards.len();
// If we cut off at least one element then that was tail and possibly some heads
let tail = tail && no_tailing_discards.len() == names_len;
let tail_wasnt_cutoff = tail_present && no_tailing_discards.len() == names_len;
no_tailing_discards.into_iter().enumerate().rev().fold(
term,
@ -1578,15 +1578,21 @@ pub fn list_access_to_uplc(
// handle tail case
// name is guaranteed to not be discard at this point
if index == no_tailing_len - 1 && tail {
if index == no_tailing_len - 1 && tail_wasnt_cutoff {
// simply lambda for tail name
acc.lambda(name)
} else if index == no_tailing_len - 1 {
// case for no tail
// name is guaranteed to not be discard at this point
if matches!(expect_level, ExpectLevel::None) {
if matches!(expect_level, ExpectLevel::None)
|| (error_term == Term::Error && tail_present)
{
acc.lambda(name).apply(head_list).lambda(tail_name)
} else if tail_present {
Term::var(tail_name.to_string())
.delayed_choose_list(error_term.clone(), acc.lambda(name).apply(head_list))
.lambda(tail_name)
} else if error_term == Term::Error {
Term::tail_list()
.apply(Term::var(tail_name.to_string()))