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633a774276
Added LocalFunction configuration macro to force use or not use of locals as template parameters. [SVN r77765]
51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
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// Copyright (C) 2009-2012 Lorenzo Caminiti
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// Distributed under the Boost Software License, Version 1.0
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// (see accompanying file LICENSE_1_0.txt or a copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// Home at http://www.boost.org/libs/local_function
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#include <boost/config.hpp>
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#ifdef BOOST_NO_VARIADIC_MACROS
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# error "variadic macros required"
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#else
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#include <boost/local_function.hpp>
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#include <boost/function.hpp>
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#include <boost/typeof/typeof.hpp>
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#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
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#include <boost/detail/lightweight_test.hpp>
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struct number;
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BOOST_TYPEOF_REGISTER_TYPE(number) // Register before `bind this_` below.
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struct number {
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number(int value) : value_(value) {}
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boost::function<int (void)> inc(void) {
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int BOOST_LOCAL_FUNCTION(bind this_) {
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return ++this_->value_;
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} BOOST_LOCAL_FUNCTION_NAME(i)
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return i;
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}
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private:
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int value_;
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};
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int main(void) {
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number n1 = 0; // Object valid in scope where closure is used.
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boost::function<int (void)> inc1 = n1.inc();
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number n2 = 0;
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boost::function<int (void)> inc2 = n2.inc();
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BOOST_TEST(inc1() == 1);
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BOOST_TEST(inc1() == 2);
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BOOST_TEST(inc2() == 1);
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BOOST_TEST(inc1() == 3);
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return boost::report_errors();
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}
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#endif // VARIADIC_MACROS
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