#! /usr/bin/env python
# -*- python -*-
# RUN: %{python} %s '%swift_src_root'

import os.path
import subprocess
import sys

if len(sys.argv) < 2:
    print('Invalid number of arguments.')
    sys.exit(1)

swift_src_root = sys.argv[1]
if not os.path.exists(os.path.join(swift_src_root, '.git')):
    # It is fine if the folder doesn't exist
    sys.exit(0)

returncode = subprocess.call(
    ['git', '-C', swift_src_root, 'grep', r'\bDEBUG[(]'])
if returncode == 0:  # We found some DEBUG in there.
    print("""
*** The {DEBUG}(...) macro is being renamed to LLVM_DEBUG(...);
*** please use that instead.""".format(DEBUG='DEBUG'))
    sys.exit(1)

# If you see a failure in this test, that means you introduced a use of the
# DEBUG macro from LLVM, which is being renamed to LLVM_DEBUG.