| # Minimum supported Bazel version. Should match .bazelminversion file. |
| MIN_VERSION = "0.28.0" |
| |
| # Maximum supported Bazel version. Should match .bazelversion file. |
| MAX_VERSION = "1.2.1" |
| |
| def _tuplicate(value, delim): |
| rv = () |
| for field in value.split(delim): |
| if field.isdigit(): |
| rv += (int(field),) |
| else: |
| rv += (field,) |
| return rv |
| |
| def _parse_version(version): |
| if not version: |
| return () |
| |
| # Remove any commit tail. |
| version = version.split(" ", 1)[0] |
| |
| # Split into (release, date) parts. |
| parts = version.split("-", 1) |
| return _tuplicate(parts[0], ".") |
| |
| def _bound_size(tup, size, padding = 0): |
| if len(tup) >= size: |
| return tup[:size] |
| ret = tup |
| |
| for i in range(size - len(tup)): |
| ret += (padding,) |
| return ret |
| |
| def check_version(min_required, max_supported): |
| found = native.bazel_version |
| if not found: |
| print("\nDevelopment version of bazel detected.\nDisabling version check.\nExpect the unexpected.") |
| return |
| elif "rc" in found: |
| print("\nRelease candidate version of bazel detected: %s.\nDisabling version check.\nGood luck!" % (found,)) |
| return |
| found_version = _parse_version(found) |
| min = _parse_version(min_required) |
| if min > _bound_size(found_version, len(min)): |
| fail("You need to update bazel. Required version {} of bazel, found {}".format(min_required, found)) |
| max = _parse_version(max_supported) |
| if max < _bound_size(found_version, len(max)): |
| fail("Your bazel is too new. Maximum supported version {} of bazel, found {}".format(max_supported, found)) |
| |
| def blacklist_version(version, reason): |
| found = _parse_version(native.bazel_version) |
| if found == _parse_version(version): |
| fail("\n".join([ |
| "You're using a blacklisted version of Bazel ({}).".format(native.bazel_version), |
| "Please upgrade or downgrade to a supported release.", |
| "The version of Bazel you're using is incompatible with Kythe because:", |
| reason, |
| ])) |
