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#!/usr/bin/env python3
#
# Intended usage:
#
# git grep -l '\.qmp(' | xargs ./scripts/python_qmp_updater.py
#
import re
import sys
from typing import Optional
start_reg = re.compile(r'^(?P<padding> *)(?P<res>\w+) = (?P<vm>.*).qmp\(',
flags=re.MULTILINE)
success_reg_templ = re.sub('\n *', '', r"""
(\n*{padding}(?P<comment>\#.*$))?
\n*{padding}
(
self.assert_qmp\({res},\ 'return',\ {{}}\)
|
assert\ {res}\['return'\]\ ==\ {{}}
|
assert\ {res}\ ==\ {{'return':\ {{}}}}
|
self.assertEqual\({res}\['return'\],\ {{}}\)
)""")
some_check_templ = re.sub('\n *', '', r"""
(\n*{padding}(?P<comment>\#.*$))?
\s*self.assert_qmp\({res},""")
def tmatch(template: str, text: str,
padding: str, res: str) -> Optional[re.Match[str]]:
return re.match(template.format(padding=padding, res=res), text,
flags=re.MULTILINE)
def find_closing_brace(text: str, start: int) -> int:
"""
Having '(' at text[start] search for pairing ')' and return its index.
"""
assert text[start] == '('
height = 1
for i in range(start + 1, len(text)):
if text[i] == '(':
height += 1
elif text[i] == ')':
height -= 1
if height == 0:
return i
raise ValueError
def update(text: str) -> str:
result = ''
while True:
m = start_reg.search(text)
if m is None:
result += text
break
result += text[:m.start()]
args_ind = m.end()
args_end = find_closing_brace(text, args_ind - 1)
all_args = text[args_ind:args_end].split(',', 1)
name = all_args[0]
args = None if len(all_args) == 1 else all_args[1]
unchanged_call = text[m.start():args_end+1]
text = text[args_end+1:]
padding, res, vm = m.group('padding', 'res', 'vm')
m = tmatch(success_reg_templ, text, padding, res)
if m is None:
result += unchanged_call
if ('query-' not in name and
'x-debug-block-dirty-bitmap-sha256' not in name and
not tmatch(some_check_templ, text, padding, res)):
print(unchanged_call + text[:200] + '...\n\n')
continue
if m.group('comment'):
result += f'{padding}{m.group("comment")}\n'
result += f'{padding}{vm}.cmd({name}'
if args:
result += ','
if '\n' in args:
m_args = re.search('(?P<pad> *).*$', args)
assert m_args is not None
cur_padding = len(m_args.group('pad'))
expected = len(f'{padding}{res} = {vm}.qmp(')
drop = len(f'{res} = ')
if cur_padding == expected - 1:
# tolerate this bad style
drop -= 1
elif cur_padding < expected - 1:
# assume nothing to do
drop = 0
if drop:
args = re.sub('\n' + ' ' * drop, '\n', args)
result += args
result += ')'
text = text[m.end():]
return result
for fname in sys.argv[1:]:
print(fname)
with open(fname) as f:
t = f.read()
t = update(t)
with open(fname, 'w') as f:
f.write(t)
|
