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#!/usr/bin/env python3
# Automatically formatted with yapf (https://github.com/google/yapf)
# Fake 'opt' program that can be made to crash on request. For testing
# the 'reduce_pipeline.py' automatic 'opt' NPM pipeline reducer.
import argparse
import os
import shutil
import signal
parser = argparse.ArgumentParser()
parser.add_argument('-passes', action='store', dest='passes', required=True)
parser.add_argument('-print-pipeline-passes',
dest='print_pipeline_passes',
action='store_true')
parser.add_argument('-crash-seq',
action='store',
dest='crash_seq',
required=True)
parser.add_argument('-o', action='store', dest='output')
parser.add_argument('input')
[args, unknown_args] = parser.parse_known_args()
# Expand pipeline if '-print-pipeline-passes'.
if args.print_pipeline_passes:
if args.passes == 'EXPAND_a_to_f':
print('a,b,c,d,e,f')
else:
print(args.passes)
exit(0)
# Parse '-crash-seq'.
crash_seq = []
tok = ''
for c in args.crash_seq:
if c == ',':
if tok != '':
crash_seq.append(tok)
tok = ''
else:
tok += c
if tok != '':
crash_seq.append(tok)
print(crash_seq)
# Parse '-passes' and see if we need to crash.
tok = ''
for c in args.passes:
if c == ',':
if len(crash_seq) > 0 and crash_seq[0] == tok:
crash_seq.pop(0)
tok = ''
elif c == '(':
tok = ''
elif c == ')':
if len(crash_seq) > 0 and crash_seq[0] == tok:
crash_seq.pop(0)
tok = ''
else:
tok += c
if len(crash_seq) > 0 and crash_seq[0] == tok:
crash_seq.pop(0)
# Copy input to output.
if args.output:
shutil.copy(args.input, args.output)
# Crash if all 'crash_seq' passes occured in right order.
if len(crash_seq) == 0:
print('crash')
os.kill(os.getpid(), signal.SIGKILL)
else:
print('no crash')
exit(0)
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