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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
import os
import re
import sys
import unittest
from pathlib import Path
sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
from shiboken_paths import init_paths
init_paths()
from shiboken6 import Shiboken
_init_pyside_extension() # trigger bootstrap
from shibokensupport.signature.lib.tool import build_brace_pattern
"""
This test tests the brace pattern from signature.lib.tool
against a slower reference implementation.
The pattern is crucial, because it is used heavily in signature.parser .
"""
# A slow reference parser for braces and strings
def check(s):
open, close = "[{(<", "]})>"
escape, quote = "\\", '"'
instring = blind = False
stack = []
for c in s:
if instring:
if blind:
blind = False
elif c == escape:
blind = True
elif c == quote:
instring = False
stack.pop()
continue
if c in open:
stack.append(c)
elif c in close:
pos = close.index(c)
if ((len(stack) > 0) and
(open[pos] == stack[len(stack)-1])):
stack.pop()
else:
return False
elif c == escape:
return False
elif c == quote:
instring = True
stack.append(c)
return len(stack) == 0
class TestBracePattern(unittest.TestCase):
tests = [
(r'{[]{()}}', True),
(r'[{}{})(]', False),
(r'[{}{} ")(" ]', True),
(r'[{}{} ")(\" ]', False),
(r'[{}{} ")(\" ]"]', True),
(r'a < b ( c [ d { "} \"\"}" } ] ) >', True),
(r'a < b ( c [ d { } ] ) >', True),
(r'a < b ( c [ d { "huh" } ] ) >', True),
(r'a < b ( c [ d { "huh\" \" \\\"" } ] ) >', True),
]
def test_checkfunc(self):
for test, result in self.tests:
if result:
self.assertTrue(check(test))
else:
self.assertFalse(check(test))
def test_the_brace_pattern(self):
func = re.compile(build_brace_pattern(5, ",") + "$", re.VERBOSE).match
for test, result in self.tests:
if result:
self.assertTrue(func(test))
else:
self.assertFalse(func(test))
if __name__ == '__main__':
unittest.main()
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