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-rw-r--r--libs/lambda/test/result_of_tests.cpp314
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diff --git a/libs/lambda/test/result_of_tests.cpp b/libs/lambda/test/result_of_tests.cpp
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+++ b/libs/lambda/test/result_of_tests.cpp
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+// result_of_tests.cpp -- The Boost Lambda Library ------------------
+//
+// Copyright (C) 2010 Steven Watanabe
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// For more information, see www.boost.org
+
+// -----------------------------------------------------------------------
+
+
+#include <boost/test/minimal.hpp> // see "Header Implementation Option"
+#include <boost/lambda/bind.hpp>
+#include <boost/lambda/lambda.hpp>
+#include <boost/mpl/assert.hpp>
+#include <boost/type_traits/is_same.hpp>
+
+struct with_result_type {
+ typedef int result_type;
+ int operator()() const { return 0; }
+ int operator()(int) const { return 1; }
+ int operator()(int, int) const { return 2; }
+ int operator()(int, int, int) const { return 3; }
+ int operator()(int, int, int, int) const { return 4; }
+ int operator()(int, int, int, int, int) const { return 5; }
+ int operator()(int, int, int, int, int, int) const { return 6; }
+ int operator()(int, int, int, int, int, int, int) const { return 7; }
+ int operator()(int, int, int, int, int, int, int, int) const { return 8; }
+ int operator()(int, int, int, int, int, int, int, int, int) const { return 9; }
+};
+
+struct with_result_template_value {
+ template<class Sig>
+ struct result;
+ template<class This>
+ struct result<This()> {
+ typedef int type;
+ };
+ template<class This, class A1>
+ struct result<This(A1)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2>
+ struct result<This(A1, A2)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3>
+ struct result<This(A1, A2, A3)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4>
+ struct result<This(A1, A2, A3, A4)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4, class A5>
+ struct result<This(A1, A2, A3, A4, A5)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A5, int>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4, class A5, class A6>
+ struct result<This(A1, A2, A3, A4, A5, A6)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A5, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A6, int>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4, class A5, class A6, class A7>
+ struct result<This(A1, A2, A3, A4, A5, A6, A7)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A5, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A6, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A7, int>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
+ struct result<This(A1, A2, A3, A4, A5, A6, A7, A8)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A5, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A6, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A7, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A8, int>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
+ struct result<This(A1, A2, A3, A4, A5, A6, A7, A8, A9)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A5, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A6, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A7, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A8, int>));
+ BOOST_MPL_ASSERT((boost::is_same<A9, int>));
+ typedef int type;
+ };
+
+ int operator()() const { return 0; }
+ int operator()(int) const { return 1; }
+ int operator()(int, int) const { return 2; }
+ int operator()(int, int, int) const { return 3; }
+ int operator()(int, int, int, int) const { return 4; }
+ int operator()(int, int, int, int, int) const { return 5; }
+ int operator()(int, int, int, int, int, int) const { return 6; }
+ int operator()(int, int, int, int, int, int, int) const { return 7; }
+ int operator()(int, int, int, int, int, int, int, int) const { return 8; }
+ int operator()(int, int, int, int, int, int, int, int, int) const { return 9; }
+};
+
+struct with_result_template_reference {
+ template<class Sig>
+ struct result;
+ template<class This>
+ struct result<This()> {
+ typedef int type;
+ };
+ template<class This, class A1>
+ struct result<This(A1)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int&>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2>
+ struct result<This(A1, A2)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int&>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3>
+ struct result<This(A1, A2, A3)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int&>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4>
+ struct result<This(A1, A2, A3, A4)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int&>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4, class A5>
+ struct result<This(A1, A2, A3, A4, A5)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A5, int&>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4, class A5, class A6>
+ struct result<This(A1, A2, A3, A4, A5, A6)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A5, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A6, int&>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4, class A5, class A6, class A7>
+ struct result<This(A1, A2, A3, A4, A5, A6, A7)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A5, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A6, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A7, int&>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8>
+ struct result<This(A1, A2, A3, A4, A5, A6, A7, A8)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A5, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A6, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A7, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A8, int&>));
+ typedef int type;
+ };
+ template<class This, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8, class A9>
+ struct result<This(A1, A2, A3, A4, A5, A6, A7, A8, A9)> {
+ BOOST_MPL_ASSERT((boost::is_same<A1, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A2, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A3, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A4, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A5, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A6, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A7, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A8, int&>));
+ BOOST_MPL_ASSERT((boost::is_same<A9, int&>));
+ typedef int type;
+ };
+
+ int operator()() const { return 0; }
+ int operator()(int) const { return 1; }
+ int operator()(int, int) const { return 2; }
+ int operator()(int, int, int) const { return 3; }
+ int operator()(int, int, int, int) const { return 4; }
+ int operator()(int, int, int, int, int) const { return 5; }
+ int operator()(int, int, int, int, int, int) const { return 6; }
+ int operator()(int, int, int, int, int, int, int) const { return 7; }
+ int operator()(int, int, int, int, int, int, int, int) const { return 8; }
+ int operator()(int, int, int, int, int, int, int, int, int) const { return 9; }
+};
+
+template<class F>
+typename boost::result_of<F()>::type apply0(F f) {
+ return f();
+}
+template<class A, class F>
+typename boost::result_of<F(A)>::type apply1(F f, A a) {
+ return f(a);
+}
+template<class A, class B, class F>
+typename boost::result_of<F(A, B)>::type apply2(F f, A a, B b) {
+ return f(a, b);
+}
+template<class A, class B, class C, class F>
+typename boost::result_of<F(A, B, C)>::type apply3(F f, A a, B b, C c) {
+ return f(a, b, c);
+}
+
+using namespace boost::lambda;
+
+int test_main(int, char *[]) {
+ BOOST_CHECK(boost::lambda::bind(with_result_type())() == 0);
+ BOOST_CHECK(boost::lambda::bind(with_result_type(), 1)() == 1);
+ BOOST_CHECK(boost::lambda::bind(with_result_type(), 1, 2)() == 2);
+ BOOST_CHECK(boost::lambda::bind(with_result_type(), 1, 2, 3)() == 3);
+ BOOST_CHECK(boost::lambda::bind(with_result_type(), 1, 2, 3, 4)() == 4);
+ BOOST_CHECK(boost::lambda::bind(with_result_type(), 1, 2, 3, 4, 5)() == 5);
+ BOOST_CHECK(boost::lambda::bind(with_result_type(), 1, 2, 3, 4, 5, 6)() == 6);
+ BOOST_CHECK(boost::lambda::bind(with_result_type(), 1, 2, 3, 4, 5, 6, 7)() == 7);
+ BOOST_CHECK(boost::lambda::bind(with_result_type(), 1, 2, 3, 4, 5, 6, 7, 8)() == 8);
+ BOOST_CHECK(boost::lambda::bind(with_result_type(), 1, 2, 3, 4, 5, 6, 7, 8, 9)() == 9);
+
+ // Nullary result_of fails
+ //BOOST_CHECK(boost::lambda::bind(with_result_template_value())() == 0);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_value(), 1)() == 1);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_value(), 1, 2)() == 2);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_value(), 1, 2, 3)() == 3);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_value(), 1, 2, 3, 4)() == 4);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_value(), 1, 2, 3, 4, 5)() == 5);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_value(), 1, 2, 3, 4, 5, 6)() == 6);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_value(), 1, 2, 3, 4, 5, 6, 7)() == 7);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_value(), 1, 2, 3, 4, 5, 6, 7, 8)() == 8);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_value(), 1, 2, 3, 4, 5, 6, 7, 8, 9)() == 9);
+
+ int one = 1,
+ two = 2,
+ three = 3,
+ four = 4,
+ five = 5,
+ six = 6,
+ seven = 7,
+ eight = 8,
+ nine = 9;
+
+ // Nullary result_of fails
+ //BOOST_CHECK(boost::lambda::bind(with_result_template_reference())() == 0);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_reference(), var(one))() == 1);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_reference(), var(one), var(two))() == 2);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_reference(), var(one), var(two), var(three))() == 3);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_reference(), var(one), var(two), var(three), var(four))() == 4);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_reference(), var(one), var(two), var(three), var(four), var(five))() == 5);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_reference(), var(one), var(two), var(three), var(four), var(five), var(six))() == 6);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_reference(), var(one), var(two), var(three), var(four), var(five), var(six), var(seven))() == 7);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_reference(), var(one), var(two), var(three), var(four), var(five), var(six), var(seven), var(eight))() == 8);
+ BOOST_CHECK(boost::lambda::bind(with_result_template_reference(), var(one), var(two), var(three), var(four), var(five), var(six), var(seven), var(eight), var(nine))() == 9);
+
+ // Check using result_of with lambda functors
+ BOOST_CHECK(apply0(constant(0)) == 0);
+ BOOST_CHECK(apply1<int>(_1, one) == 1);
+ BOOST_CHECK(apply1<int&>(_1, one) == 1);
+ BOOST_CHECK(apply1<const int&>(_1, one) == 1);
+ BOOST_CHECK((apply2<int, int>(_1 + _2, one, two) == 3));
+ BOOST_CHECK((apply2<int&, int&>(_1 + _2, one, two) == 3));
+ BOOST_CHECK((apply2<const int&, const int&>(_1 + _2, one, two) == 3));
+ BOOST_CHECK((apply3<int, int, int>(_1 + _2 + _3, one, two, three) == 6));
+ BOOST_CHECK((apply3<int&, int&, int&>(_1 + _2 + _3, one, two, three) == 6));
+ BOOST_CHECK((apply3<const int&, const int&, const int&>(_1 + _2 + _3, one, two, three) == 6));
+
+ return 0;
+}
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