TestHelperVariadic_test Class Reference

Description

Test:

document usage of the diagnostics helper for variadic templates. Errors in variadic template instantiations are sometimes hard to spot, due to the intricacies of template argument matching and the reference collapsing rules. Our diagnostics facility is itself a variadic function template, which, when supplied with an argument pack, will build a diagnostic string describing the arguments.

Warning

care has to be taken to pass the template arguments properly, since template argument matching might mess up the reference kind (rvalue, lvalue) of the passed types. Thus, either use std::forward, or spell out the template argument(s) explicitly on invocation

See also

showVariadicTypes()

TestHelper_test

Definition at line 90 of file test-helper-variadic-test.cpp.

Private Member Functions
virtual void	run (Arg)
template<typename... ARGS>
void	forwardFunction (string id, ARGS &&... args)
	this dummy simulates a typical variadic call which takes all arguments as '&&' for the purpose of "perfect forwarding"

Member Function Documentation

run()

virtual void run ( Arg  )

inlineprivatevirtual

Definition at line 94 of file test-helper-variadic-test.cpp.

References TestHelperVariadic_test::forwardFunction(), and lib::test::showVariadicTypes().

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forwardFunction()

template<typename... ARGS>

void forwardFunction ( string  id, ARGS &&...  args  )

inlineprivate

this dummy simulates a typical variadic call which takes all arguments as '&&' for the purpose of "perfect forwarding"

Definition at line 118 of file test-helper-variadic-test.cpp.

References lib::test::showVariadicTypes().

Referenced by TestHelperVariadic_test::run().

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The documentation for this class was generated from the following file:

• test-helper-variadic-test.cpp