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chore!: Remove empty value from bounded vec #4431

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merged 5 commits into from
Feb 27, 2024
Merged

chore!: Remove empty value from bounded vec #4431

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21d8c4a
Remove empty value from bounded vec
jfecher Feb 26, 2024
f96ecb2
fmt poseidon
jfecher Feb 26, 2024
c4a7475
Merge branch 'master' into jf/remove-empty-value
TomAFrench Feb 27, 2024
3b78ee0
chore: fix test
TomAFrench Feb 27, 2024
51aae66
chore: handle final test case
TomAFrench Feb 27, 2024
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8 changes: 4 additions & 4 deletions noir_stdlib/src/collections/bounded_vec.nr
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Original file line number Diff line number Diff line change
@@ -1,12 +1,12 @@
struct BoundedVec<T, MaxLen> {
storage: [T; MaxLen],
len: u64,
empty_value: T,
}

impl<T, MaxLen> BoundedVec<T, MaxLen> {
pub fn new(initial_value: T) -> Self {
BoundedVec { storage: [initial_value; MaxLen], len: 0, empty_value: initial_value }
pub fn new() -> Self {
let zeroed = crate::unsafe::zeroed();
BoundedVec { storage: [zeroed; MaxLen], len: 0 }
}

pub fn get(mut self: Self, index: u64) -> T {
Expand Down Expand Up @@ -68,7 +68,7 @@ impl<T, MaxLen> BoundedVec<T, MaxLen> {
self.len -= 1;

let elem = self.storage[self.len];
self.storage[self.len] = self.empty_value;
self.storage[self.len] = crate::unsafe::zeroed();
elem
}

Expand Down
32 changes: 16 additions & 16 deletions test_programs/noir_test_success/bounded_vec/src/main.nr
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
#[test]
fn test_vec_push_pop() {
let mut vec: BoundedVec<Field, 3> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 3> = BoundedVec::new();
assert(vec.len == 0);
vec.push(2);
assert(vec.len == 1);
Expand All @@ -17,7 +17,7 @@ fn test_vec_push_pop() {

#[test]
fn test_vec_extend_from_array() {
let mut vec: BoundedVec<Field, 3> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 3> = BoundedVec::new();
vec.extend_from_array([2, 4]);
assert(vec.len == 2);
assert(vec.get(0) == 2);
Expand All @@ -26,69 +26,69 @@ fn test_vec_extend_from_array() {

#[test(should_fail_with="extend_from_array out of bounds")]
fn test_vec_extend_from_array_out_of_bound() {
let mut vec: BoundedVec<Field, 2> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 2> = BoundedVec::new();
vec.extend_from_array([2, 4, 6]);
}

#[test(should_fail_with="extend_from_array out of bounds")]
fn test_vec_extend_from_array_twice_out_of_bound() {
let mut vec: BoundedVec<Field, 2> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 2> = BoundedVec::new();
vec.extend_from_array([2]);
assert(vec.len == 1);
vec.extend_from_array([4, 6]);
}

#[test(should_fail)]
fn test_vec_get_out_of_bound() {
let mut vec: BoundedVec<Field, 2> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 2> = BoundedVec::new();
vec.extend_from_array([2, 4]);
let _x = vec.get(2);
}

#[test(should_fail)]
fn test_vec_get_not_declared() {
let mut vec: BoundedVec<Field, 2> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 2> = BoundedVec::new();
vec.extend_from_array([2]);
let _x = vec.get(1);
}

#[test(should_fail)]
fn test_vec_get_uninitialized() {
let mut vec: BoundedVec<Field, 2> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 2> = BoundedVec::new();
let _x = vec.get(0);
}

#[test(should_fail_with="push out of bounds")]
fn test_vec_push_out_of_bound() {
let mut vec: BoundedVec<Field, 1> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 1> = BoundedVec::new();
vec.push(1);
vec.push(2);
}

#[test(should_fail_with="extend_from_bounded_vec out of bounds")]
fn test_vec_extend_from_bounded_vec_out_of_bound() {
let mut vec: BoundedVec<Field, 2> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 2> = BoundedVec::new();

let mut another_vec: BoundedVec<Field, 3> = BoundedVec::new(0);
let mut another_vec: BoundedVec<Field, 3> = BoundedVec::new();
another_vec.extend_from_array([1, 2, 3]);

vec.extend_from_bounded_vec(another_vec);
}

#[test(should_fail_with="extend_from_bounded_vec out of bounds")]
fn test_vec_extend_from_bounded_vec_twice_out_of_bound() {
let mut vec: BoundedVec<Field, 2> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 2> = BoundedVec::new();
vec.extend_from_array([1, 2]);

let mut another_vec: BoundedVec<Field, 1> = BoundedVec::new(0);
let mut another_vec: BoundedVec<Field, 1> = BoundedVec::new();
another_vec.push(3);

vec.extend_from_bounded_vec(another_vec);
}

#[test]
fn test_vec_any() {
let mut vec: BoundedVec<Field, 3> = BoundedVec::new(0);
let mut vec: BoundedVec<Field, 3> = BoundedVec::new();
vec.extend_from_array([2, 4, 6]);
assert(vec.any(|v| v == 2) == true);
assert(vec.any(|v| v == 4) == true);
Expand All @@ -98,8 +98,8 @@ fn test_vec_any() {

#[test]
fn test_vec_any_not_default() {
let default_value = 1;
let mut vec: BoundedVec<Field, 3> = BoundedVec::new(default_value);
let default_value = 0;
let mut vec: BoundedVec<Field, 3> = BoundedVec::new();
vec.extend_from_array([2, 4]);
assert(vec.any(|v| v == default_value) == false);
}
}
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