FEATURE: Complex Assignment Edge Cases

Purpose

Handle complex assignment cases involving iterated paths, empty updates, array expansion, invalid indices, NaN indices, string slices, and depth limits.

Behavior

• Assignments through iterated and filtered paths update every selected location in jq order.
• Empty updates remove selected array or object members.
• Assignments beyond an array's current length expand it with null values where specified.
• Negative, fractional, and NaN indices follow jq's access and mutation rules.
• String slices cannot be updated when jq forbids string mutation.
• Path, containment, comparison, serialization, and merge depth limits are enforced.

Programmatic Acceptance

=== AC path-004-conformance ===
Intent: The authoritative corpus slice covering complex assignment edge cases executes and passes.
Suite: scoped
Requires: executable=python3; scope=test

import json import os import subprocess import sys

select = r"negative|NaN|depth|empty" result = subprocess.run( [sys.executable, "sources/run_conformance.py", "--select", select, "--json"], capture_output=True, text=True, env={**os.environ, "JQ": f"{os.getcwd()}/jq"}, ) print(result.stdout) print(result.stderr, file=sys.stderr) report = json.loads(result.stdout) summary = report["summary"] assert sum(summary.values()) > 0 assert summary["fail"] == 0 assert summary["error"] == 0 assert result.returncode == 0 === END AC path-004-conformance ===

User Acceptance

• None.

Guardrails

• Reject invalid mutations with runtime errors rather than corrupting values.
• Preserve partial output before runtime failure.
• Enforce documented depth limits without recursion runaway.