[BUG]: cxxheaderparser.errors.CxxParseError: parse error evaluating '\': unexpected '\'

[alandtse]

Problem description

Just tried 7d302fd and ran into a parse error on the newline continuation for a #define

➜  cxxheaderparser git:(main) ✗ python3 -m cxxheaderparser --mode=brepr ~/CommonLibVR/include/REL/Relocation.h
Traceback (most recent call last):
  File "~/cxxheaderparser/cxxheaderparser/parser.py", line 331, in parse
    fn(tok, doxygen)
  File "~/cxxheaderparser/cxxheaderparser/parser.py", line 589, in _parse_template
    template = self._parse_template_decl()
  File "~/cxxheaderparser/cxxheaderparser/parser.py", line 574, in _parse_template_decl
    param = self._parse_parameter(tok, TemplateNonTypeParam, ">")
  File "~/cxxheaderparser/cxxheaderparser/parser.py", line 1575, in _parse_parameter
    parsed_type, mods = self._parse_type(tok)
  File "~/cxxheaderparser/cxxheaderparser/parser.py", line 2126, in _parse_type
    raise self._parse_error(tok)
cxxheaderparser.errors.CxxParseError: unexpected '\'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/opt/homebrew/Cellar/[email protected]/3.10.9/Frameworks/Python.framework/Versions/3.10/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/opt/homebrew/Cellar/[email protected]/3.10.9/Frameworks/Python.framework/Versions/3.10/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "~/cxxheaderparser/cxxheaderparser/__main__.py", line 4, in <module>
    dumpmain()
  File "~/cxxheaderparser/cxxheaderparser/dump.py", line 30, in dumpmain
    data = parse_file(args.header, options=options)
  File "~/cxxheaderparser/cxxheaderparser/simple.py", line 375, in parse_file
    return parse_string(content, filename=filename, options=options)
  File "~/cxxheaderparser/cxxheaderparser/simple.py", line 351, in parse_string
    parser.parse()
  File "~/cxxheaderparser/cxxheaderparser/parser.py", line 355, in parse
    raise CxxParseError(msg) from e
cxxheaderparser.errors.CxxParseError: ../CommonLibVR/include/REL/Relocation.h:6: parse error evaluating '\': unexpected '\'

Operating System

MacOS

Installed Python Packages

Package    Version
---------- -------
docutils   0.19
pip        22.3.1
protobuf   4.21.12
PyYAML     6.0
setuptools 65.6.3
six        1.16.0
wheel      0.38.4

Reproducible example code

#pragma once
#ifdef SKYRIMVR
#	include <csv.h>
#endif
#define REL_MAKE_MEMBER_FUNCTION_POD_TYPE_HELPER_IMPL(a_nopropQual, a_propQual, ...)              \
	template <                                                                                    \
		class R,                                                                                  \
		class Cls,                                                                                \
		class... Args>                                                                            \
	struct member_function_pod_type<R (Cls::*)(Args...) __VA_ARGS__ a_nopropQual a_propQual>      \
	{                                                                                             \
		using type = R(__VA_ARGS__ Cls*, Args...) a_propQual;                                     \
	};                                                                                            \
                                                                                                  \
	template <                                                                                    \
		class R,                                                                                  \
		class Cls,                                                                                \
		class... Args>                                                                            \
	struct member_function_pod_type<R (Cls::*)(Args..., ...) __VA_ARGS__ a_nopropQual a_propQual> \
	{                                                                                             \
		using type = R(__VA_ARGS__ Cls*, Args..., ...) a_propQual;                                \
	};

https://github.com/alandtse/CommonLibVR/blob/95c6de6bbee89d0195fd3e1ba0a469b44928e038/include/REL/Relocation.h#L139-L147

[virtuald]

As per the README, cxxheaderparser explicitly does not attempt to work on code that hasn't been ran through a preprocessor (unlike CppHeaderParser), so this is a wontfix.

template <class T>
struct meets_function_req :
	std::conjunction<
		std::is_trivially_constructible<T>,
		std::is_trivially_destructible<T>,
		std::is_trivially_copy_assignable<T>,
		std::negation<
			std::is_polymorphic<T>>>
{};

Does work by itself however.