Re error unbalanced parenthesis at position

instantiation_011 crash: re.error: unbalanced parenthesis at position 3 #420

Environment

Describe the bug
VSG Crashes with the following stack trace:

/lib/python3.7/site-packages/vsg/__main__.py», line 203, in main oRules.fix(commandLineArguments.fix_phase) File «

/lib/python3.7/site-packages/vsg/rule_list.py», line 137, in fix oRule.fix(self.oVhdlFile) File «

/lib/python3.7/site-packages/vsg/rule.py», line 73, in fix self._fix_violations(oFile) File «

/lib/python3.7/site-packages/vsg/rules/case_rule.py», line 75, in _fix_violations fix_function(oFile.lines[iLineNumber], word) File «

/lib/python3.7/site-packages/vsg/fix.py», line 88, in upper_case utils.change_word(oLine, sKeyword, sKeyword.upper()) File «

/lib/python3.7/site-packages/vsg/utils.py», line 107, in change_word tLine = re.subn(r’b’ + sWord + r’b’, sNewWord, sLine, iMax, flags=re.IGNORECASE) File «

/lib/python3.7/re.py», line 203, in subn return _compile(pattern, flags).subn(repl, string, count) File «

/lib/python3.7/re.py», line 286, in _compile p = sre_compile.compile(pattern, flags) File «

/lib/python3.7/sre_compile.py», line 764, in compile p = sre_parse.parse(p, flags) File «

/lib/python3.7/sre_parse.py», line 944, in parse raise source.error(«unbalanced parenthesis») re.error: unbalanced parenthesis at position 3″>

To Reproduce
I have narrowed the crash down to a line similar to this:

I_PORTMAP_FORMAL => I_ENTITY_INPUT(generate_loop_index)(function_call(G_GENERIC_A(generate_loop_index),8)-1 downto 0),

This line is part of a port map statement, which is for an instance being generated in a generate loop.

If I comment the line out, then vsg continues on without any additional issues.

Note, I have another line of code that looks like this which does not trigger the problem:
I_PORTMAP_FORMAL_OK => I_ENTITY_INPUT(generate_loop_index)(function_call2(G_GENERIC_A(generate_loop_index))-1 downto 0),

I suspect the problem is the function_call which requires 2 arguments, whereas function_call2 only has one argument.

Expected behavior
Crash would not occur and I don’t believe there is anything to fix here.

Screenshots
N/A

Additional context
N/A

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Источник

Why do I get the error message ‘Unbalanced or unexpected parenthesis or bracket’ ?

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Источник

Hi. Here’s the full output it gives me:

C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsite-packagesIPythonnbformatcurrent.py:19: UserWarning: IPython.nbformat.current is deprecated.

- use IPython.nbformat for read/write/validate public API
- use IPython.nbformat.vX directly to composing notebooks of a particular version

  """)
Traceback (most recent call last):
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsite-packagesIPythonqtbase_frontend_mixin.py", line 138, in _dispatch
    handler(msg)
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsite-packagesspyderlibwidgetsipython.py", line 335, in _handle_inspect_reply
    signature = self.get_signature(content)
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsite-packagesspyderlibwidgetsipython.py", line 271, in get_signature
    signature = getsignaturefromtext(text, name)
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsite-packagesspyderlibutilsdochelpers.py", line 180, in getsignaturefromtext
    sigs_1 = re.findall(oneline_re + '|' + multiline_re, text)
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libre.py", line 210, in findall
    return _compile(pattern, flags).findall(string)
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libre.py", line 294, in _compile
    p = sre_compile.compile(pattern, flags)
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsre_compile.py", line 568, in compile
    p = sre_parse.parse(p, flags)
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsre_parse.py", line 760, in parse
    p = _parse_sub(source, pattern, 0)
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsre_parse.py", line 370, in _parse_sub
    itemsappend(_parse(source, state))
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsre_parse.py", line 708, in _parse
    p = _parse_sub(source, state)
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsre_parse.py", line 370, in _parse_sub
    itemsappend(_parse(source, state))
  File "C:Program FilesPythonWinPython-64bit-3.4.3.2python-3.4.3.amd64libsre_parse.py", line 710, in _parse
    raise error("unbalanced parenthesis")
sre_constants.error: unbalanced parenthesis