add array.array to comparator

[KRRT7]

PR Type

Enhancement, Tests

---

Description

Add array.array support to comparator.
Include typecode and length checks.
Add element-wise recursive comparison.
Add tests for equality and mismatches.

---

Changes walkthrough 📝

	Relevant files
Enhancement	comparator.py Implement array.array comparison                                                  codeflash/verification/comparator.py Imported built-in array module. Added array.array handling in comparator. Checked typecode, length, and recursive element comparison. +10/-0
Tests	test_comparator.py Add array.array comparator tests                                                  tests/test_comparator.py Imported array in test file. Added tests for equal and mismatched array.array. Covered empty arrays and typecode mismatches. +19/-0

---

Need help?

Type /help how to ... in the comments thread for any questions about PR-Agent usage.

Check out the documentation for more information.

[github-actions]

PR Reviewer Guide 🔍

(Review updated until commit 4b41d14)

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ Recommended focus areas for review NaN handling The element-wise comparison for float arrays does not account for NaN equality and will treat two NaN elements as unequal. Consider special-casing NaN values in array.array of float type. if isinstance(orig, array.array): if not isinstance(new, array.array): return False if orig.typecode != new.typecode: return False if len(orig) != len(new): return False return all(comparator(elem1, elem2, superset_obj) for elem1, elem2 in zip(orig, new))

[github-actions]

PR Code Suggestions ✨

Latest suggestions up to 4b41d14
Explore these optional code suggestions:

Category	Suggestion	Impact
General	Add superset array length support Respect the superset_obj flag when comparing array lengths by allowing new to be a superset (longer) when superset_obj=True and only enforcing a minimum length check otherwise. codeflash/verification/comparator.py [179-180] -if len(orig) != len(new): +if len(new) < len(orig) or (not superset_obj and len(orig) != len(new)): return False Suggestion importance[1-10]: 7 __ Why: It correctly integrates the superset_obj flag into length checks, aligning with the comparator’s behavior and preventing false negatives when superset_obj=True.	Medium

---

Previous suggestions

Suggestions up to commit b2130ed

Category	Suggestion	Impact
Possible issue	Remove contradictory array tests Remove or correct the contradictory assertions so the test expectations are consistent. Decide whether you want to allow type promotion or strict typecode matching and keep only the matching assertions. tests/test_comparator.py [227-230] -assert comparator(arr_b, arr_h) +assert comparator(arr_b, arr_h) assert comparator(arr_h, arr_l) -assert not comparator(arr_b, arr_h) -assert not comparator(arr_h, arr_l) Suggestion importance[1-10]: 8 __ Why: The test contains directly contradictory assertions for arr_b vs arr_h which will always fail; removing them ensures test consistency.	Medium
	Handle NaN in float arrays Add a special case to treat NaN float elements as equal when comparing float arrays. Use math.isnan before the recursive comparison to ensure NaN==NaN. codeflash/verification/comparator.py [174-181] if isinstance(orig, array.array): if not isinstance(new, array.array): return False if orig.typecode != new.typecode: return False if len(orig) != len(new): return False + # handle NaN for float arrays + if orig.typecode in ('f', 'd'): + import math + return all((math.isnan(e1) and math.isnan(e2)) or comparator(e1, e2, superset_obj) + for e1, e2 in zip(orig, new)) return all(comparator(elem1, elem2, superset_obj) for elem1, elem2 in zip(orig, new)) Suggestion importance[1-10]: 7 __ Why: Adding a math.isnan check covers NaN comparisons for float arrays that would otherwise be considered unequal, improving correctness.	Medium
General	Support type‐promotion in superset mode Allow type‐promotion when superset_obj=True by comparing itemsize instead of exact typecode. This enables larger array types to match smaller ones in superset mode. codeflash/verification/comparator.py [174-181] if isinstance(orig, array.array): if not isinstance(new, array.array): return False if orig.typecode != new.typecode: - return False + if not superset_obj or orig.itemsize > new.itemsize: + return False if len(orig) != len(new): return False return all(comparator(elem1, elem2, superset_obj) for elem1, elem2 in zip(orig, new)) Suggestion importance[1-10]: 4 __ Why: The change introduces a new feature based on superset_obj but its behavior isn't clearly justified by existing code and may not align with expected semantics.	Low

[github-actions]

Persistent review updated to latest commit 4b41d14

[misrasaurabh1]

Suggested change

	if not isinstance(new, array.array):
	return False

[misrasaurabh1]

approving, just change one line in the comme