[PARSE BUG]: Explicit instantiations of function templates cannot be parsed

[asteever]

Function templates can be explicitly instantiated (including those with inferred template parameters), but cxxheaderparser will not have it.

Per

cxxheaderparser/cxxheaderparser/parser.py

Line 738 in 544c253

tok = self.lex.token_if("class", "struct")

all instantiations must be class or struct, and the TemplateInst type seems to assume this also.

https://en.cppreference.com/w/cpp/language/function_template explicit instantiation

https://coliru.stacked-crooked.com/a/15000b7567cd61ca <- compiles fine

[virtuald]

Please post an example of the code that can't be parsed in this issue, thanks!

[asteever]

https://coliru.stacked-crooked.com/a/15000b7567cd61ca is the example

#include <iostream>

template <typename T> T tFunction(T val);

template <typename T> T tFunction(T val) {
    return val;
}

template bool tFunction(bool val);

[virtuald]

Specifically, template bool tFunction(bool val); doesn't work in cxxheaderparser, but godbolt seems to accept it.

That's a weird declaration.