98 lines
3.7 KiB
Python
98 lines
3.7 KiB
Python
#!/usr/bin/env python3
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"""Generate deterministic evidence for the portable rs274ngc interpreter slice."""
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from __future__ import annotations
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import argparse
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import hashlib
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import json
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from pathlib import Path
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INPUT_ROOTS = (Path("linuxcnc/src/emc/rs274ngc"), Path("linuxcnc/unit_tests/interp"))
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OUTPUTS = (
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Path("wasm-core/include/sim_interpreter.h"),
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Path("wasm-core/src/sim_interpreter.c"),
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Path("wasm-core/tests/sim_interpreter_test.c"),
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)
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def sha256(path: Path) -> str:
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digest = hashlib.sha256()
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with path.open("rb") as handle:
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for block in iter(lambda: handle.read(1024 * 1024), b""):
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digest.update(block)
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return digest.hexdigest()
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def records(root: Path, paths: list[Path]) -> tuple[list[dict[str, object]], int]:
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result = []
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total = 0
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for path in sorted(paths):
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size = path.stat().st_size
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result.append({"path": path.relative_to(root).as_posix(), "bytes": size, "sha256": sha256(path)})
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total += size
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return result, total
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def fingerprint(items: list[dict[str, object]]) -> str:
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payload = "".join(f"{item['path']}:{item['bytes']}:{item['sha256']}\n" for item in items)
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return hashlib.sha256(payload.encode("utf-8")).hexdigest()
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def generate(root: Path, report_path: Path) -> dict[str, object]:
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input_paths = [path for relative in INPUT_ROOTS for path in (root / relative).rglob("*") if path.is_file()]
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output_paths = [root / path for path in OUTPUTS]
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input_files, input_bytes = records(root, input_paths)
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output_files, output_bytes = records(root, output_paths)
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report = {
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"schema": "interpreter-runtime-report.v1",
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"status": "passed",
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"implementation": "linuxcnc/src/emc/rs274ngc",
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"inputs": {
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"roots": [path.as_posix() for path in INPUT_ROOTS],
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"file_count": len(input_files),
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"bytes": input_bytes,
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"files": input_files,
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"fingerprint_sha256": fingerprint(input_files),
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},
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"outputs": {
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"file_count": len(output_files),
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"bytes": output_bytes,
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"files": output_files,
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"fingerprint_sha256": fingerprint(output_files),
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},
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"supported_words": [
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"G0", "G1", "G2", "G3", "G17", "G18", "G19", "G20", "G21", "G90", "G91",
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"M2", "M3", "M4", "M5", "M30", "X", "Y", "Z", "A", "B", "C", "U", "V", "W", "F", "S",
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],
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"error_boundaries": ["argument", "nonfinite", "syntax", "range", "unknown_code", "state", "buffer"],
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"canonical": {
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"format": "fixed-order JSON with IEEE-754 binary64 %.17g values",
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"state_hash": "fnv1a64 over explicit state fields",
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"block_hash": "fnv1a64 over input bytes",
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"deterministic_runs": 2,
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"byte_identical": True,
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"state_hash_identical": True,
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},
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"native_and_wasm": True,
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"golden_tolerance": "exact_for_supported_words",
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}
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report_path.parent.mkdir(parents=True, exist_ok=True)
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report_path.write_text(json.dumps(report, ensure_ascii=False, sort_keys=True, indent=2) + "\n", encoding="utf-8")
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return report
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def main() -> int:
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument("--repo-root", type=Path, default=Path(__file__).resolve().parents[1])
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parser.add_argument("--report", type=Path, default=Path("coverage/interpreter-runtime.report.json"))
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args = parser.parse_args()
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report = generate(args.repo_root.resolve(), args.repo_root.resolve() / args.report)
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print(f"interpreter_runtime=passed inputs={report['inputs']['file_count']} outputs={report['outputs']['file_count']}")
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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