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Getting arguments of template instantiation #43

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rokups opened this issue Mar 4, 2018 · 1 comment

Contributor

rokups commented Mar 4, 2018 •

edited

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I am trying to get templated type parameter. This oversimplified example fails:

if (type.kind() == cppast::cpp_type_kind::template_instantiation_t)
{
    const auto& templateType = dynamic_cast<const cppast::cpp_template_instantiation_type&>(type);
    templateType.arguments().value();    // type_safe/tagged_union.hpp:262: Assertion 'cur_type_ == type' failed - different type stored in union.
}

Am i doing something wrong or is this a bug?

Collaborator

foonathan commented Mar 4, 2018

See here: https://github.com/foonathan/cppast/blob/master/include/cppast/cpp_template.hpp#L145-L168

In your case the arguments aren't exposed so you only get them as string via unexposed_arguments(). See also #9.

foonathan closed this as completed

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