Support keyword 'reset'

[ElonH]

I try to parse openwrt project via this python library

btw, get error

tmp/.config-target.in:2554: error: couldn't parse 'reset if !DEVEL': syntax error

[ElonH]

tmp/.config-target.in:

choice
        prompt "Target System"
        default TARGET_x86
        reset if !DEVEL

Traceback:

---------------------------------------------------------------------------
KconfigError                              Traceback (most recent call last)
/mnt/A/opde/openwrt.ipynb in 
      2 # os.environ['srctree'] = SourceDir.as_posix()
      3 os.environ['srctree'] = '/mnt/A/openwrt'
----> 4 kconf = kconfiglib.Kconfig('Config.in')
      5 kconf.srctree

/mnt/A/opde/.venv/lib/python3.6/site-packages/kconfiglib.py in __init__(self, filename, warn, warn_to_stderr, encoding, suppress_traceback)
    945         """
    946         try:
--> 947             self._init(filename, warn, warn_to_stderr, encoding)
    948         except (EnvironmentError, KconfigError) as e:
    949             if suppress_traceback:

/mnt/A/opde/.venv/lib/python3.6/site-packages/kconfiglib.py in _init(self, filename, warn, warn_to_stderr, encoding)
   1083             # Parse the Kconfig files. Returns the last node, which we
   1084             # terminate with '.next = None'.
-> 1085             self._parse_block(None, self.top_node, self.top_node).next = None
   1086             self.top_node.list = self.top_node.next
   1087             self.top_node.next = None

/mnt/A/opde/.venv/lib/python3.6/site-packages/kconfiglib.py in _parse_block(self, end_token, parent, prev)
   2987                 for filename in filenames:
   2988                     self._enter_file(filename)
-> 2989                     prev = self._parse_block(None, parent, prev)
   2990                     self._leave_file()
   2991 

/mnt/A/opde/.venv/lib/python3.6/site-packages/kconfiglib.py in _parse_block(self, end_token, parent, prev)
   2987                 for filename in filenames:
   2988                     self._enter_file(filename)
-> 2989                     prev = self._parse_block(None, parent, prev)
   2990                     self._leave_file()
   2991 

/mnt/A/opde/.venv/lib/python3.6/site-packages/kconfiglib.py in _parse_block(self, end_token, parent, prev)
   3077                 choice.nodes.append(node)
   3078 
-> 3079                 self._parse_props(node)
   3080                 self._parse_block(_T_ENDCHOICE, node, node)
   3081                 node.list = node.next

/mnt/A/opde/.venv/lib/python3.6/site-packages/kconfiglib.py in _parse_props(self, node)
   3139         node.dep = self.y
   3140 
-> 3141         while self._next_line():
   3142             t0 = self._tokens[0]
   3143 

/mnt/A/opde/.venv/lib/python3.6/site-packages/kconfiglib.py in _next_line(self)
   2234             self.linenr += 1
   2235 
-> 2236         self._tokens = self._tokenize(line)
   2237         # Initialize to 1 instead of 0 to factor out code from _parse_block()
   2238         # and _parse_props(). They immediately fetch self._tokens[0].

/mnt/A/opde/.venv/lib/python3.6/site-packages/kconfiglib.py in _tokenize(self, s)
   2369             # we have a preprocessor variable assignment (or a bare macro on a
   2370             # line)
-> 2371             self._parse_assignment(s)
   2372             return (None,)
   2373 

/mnt/A/opde/.venv/lib/python3.6/site-packages/kconfiglib.py in _parse_assignment(self, s)
   2625         rhs_match = _assignment_rhs_match(s, i)
   2626         if not rhs_match:
-> 2627             self._parse_error("syntax error")
   2628 
   2629         op, val = rhs_match.groups()

/mnt/A/opde/.venv/lib/python3.6/site-packages/kconfiglib.py in _parse_error(self, msg)
   3880             "" if self.filename is None else
   3881                 "{}:{}: ".format(self.filename, self.linenr),
-> 3882             self._line.strip(), msg))
   3883 
   3884     def _trailing_tokens_error(self):

KconfigError: tmp/.config-target.in:2554: error: couldn't parse 'reset if !DEVEL': syntax error

[ElonH]

I found the openwrt ducument.
openwrt changed some code at kconfig

These files were taken from the Linux Kernel Configuration System at commit
089b7d890f972f6b649fedc9259f6b93a18fb970 (Feb 4, 2020) and modified for the
OpenWrt Buildroot:
 - Removed gconf, tests and kernel configuration targets.
 - Adjusted the Makefile to compile outside the kernel.
 - Always use default file when running make all{no,mod,yes}config.
 - Added a 'reset' command to reset config when the target changes.
 - Allow config reading from & writing to a different file.
 - Allow 'source' command to use globs to include multiple files.
 - Don't warn when selecting a symbol with unmet direct dependencies.
 - Don't write auto.conf and other files under include/ directory.
 - Reverted a commit to allow use of '/' & '.' in unquoted config symbols.
   There are too many of those in OpenWrt right now.
 - Reverted a commit that was issuing a warning when there were more than
   one help text.  This is used in a few packages to use different texts
   for the menuconfig help, and the ipkg package description.
 - Reverted an upstream change that avoids writing symbols that are not
   visible to .config, which breaks OpenWrt busybox's '.config' generation
   logic.
 - Treat recursive dependency as a warning only; add a --fatalrecursive
   option to conf to treat recursive deps as a fatal error.
 - Use pre-built *.lex.c *.tab.[ch] files by default, to avoid depending on
   flex & bison.  Rebuild/remove these files only if running make with
   BUILD_SHIPPED_FILES defined

For a full list of changes, see the repository at:
https://github.com/cotequeiroz/linux/commits/openwrt/scripts/kconfig