Quality Gates & Blocking Rules

"""Automotive static analysis quality gate."""
import sys
import json
import yaml
import argparse

def load_misra_violations(xml_file: str) -> list:
    """Parse violations from cppcheck/QAC XML output."""
    import xml.etree.ElementTree as ET
    tree = ET.parse(xml_file)
    violations = []
    for error in tree.getroot().iter("error"):
        violations.append({
            "rule": error.get("id", ""),
            "severity": error.get("severity", "advisory"),
            "msg": error.get("msg", "")
        })
    return violations

def load_deviation_register(yaml_file: str) -> set:
    """Return set of approved deviation rule IDs."""
    with open(yaml_file) as f:
        deviations = yaml.safe_load(f)
    return {d["rule"] for d in deviations.get("deviations", [])}

def run_gate(violations: list, approved_deviations: set) -> list:
    """Return list of gate failures."""
    failures = []
    for v in violations:
        sev = v["severity"]
        rule = v["rule"]
        if sev == "mandatory":
            failures.append(f"MANDATORY violation: {rule} -- {v['msg'][:60]}")
        elif sev == "required" and rule not in approved_deviations:
            failures.append(f"REQUIRED violation without deviation: {rule}")
    return failures

violations = load_misra_violations("reports/misra.xml")
approved   = load_deviation_register("config/deviation_register.yaml")
failures   = run_gate(violations, approved)

if failures:
    print("QUALITY GATE FAILED:")
    for f in failures: print(f"  {f}")
    sys.exit(1)
else:
    print("QUALITY GATE PASSED")