| // bind_tests_simple.cpp -- The Boost Lambda Library ------------------ |
| // |
| // Copyright (C) 2000-2003 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi) |
| // Copyright (C) 2000-2003 Gary Powell (powellg@amazon.com) |
| // |
| // 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 <iostream> |
| |
| using namespace boost::lambda; |
| |
| |
| int sum_of_args_0() { return 0; } |
| int sum_of_args_1(int a) { return a; } |
| int sum_of_args_2(int a, int b) { return a+b; } |
| int sum_of_args_3(int a, int b, int c) { return a+b+c; } |
| int sum_of_args_4(int a, int b, int c, int d) { return a+b+c+d; } |
| int sum_of_args_5(int a, int b, int c, int d, int e) { return a+b+c+d+e; } |
| int sum_of_args_6(int a, int b, int c, int d, int e, int f) { return a+b+c+d+e+f; } |
| int sum_of_args_7(int a, int b, int c, int d, int e, int f, int g) { return a+b+c+d+e+f+g; } |
| int sum_of_args_8(int a, int b, int c, int d, int e, int f, int g, int h) { return a+b+c+d+e+f+g+h; } |
| int sum_of_args_9(int a, int b, int c, int d, int e, int f, int g, int h, int i) { return a+b+c+d+e+f+g+h+i; } |
| |
| |
| // ---------------------------- |
| |
| class A { |
| int i; |
| public: |
| A(int n) : i(n) {}; |
| int add(const int& j) { return i + j; } |
| int add2(int a1, int a2) { return i + a1 + a2; } |
| int add3(int a1, int a2, int a3) { return i + a1 + a2 + a3; } |
| int add4(int a1, int a2, int a3, int a4) { return i + a1 + a2 + a3 + a4; } |
| int add5(int a1, int a2, int a3, int a4, int a5) |
| { return i + a1 + a2 + a3 + a4 + a5; } |
| int add6(int a1, int a2, int a3, int a4, int a5, int a6) |
| { return i + a1 + a2 + a3 + a4 + a5 + a6; } |
| int add7(int a1, int a2, int a3, int a4, int a5, int a6, int a7) |
| { return i + a1 + a2 + a3 + a4 + a5 + a6 + a7; } |
| int add8(int a1, int a2, int a3, int a4, int a5, int a6, int a7, int a8) |
| { return i + a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8; } |
| |
| }; |
| |
| void test_member_functions() |
| { |
| using boost::ref; |
| A a(10); |
| int i = 1; |
| |
| |
| |
| |
| BOOST_CHECK(bind(&A::add, ref(a), _1)(i) == 11); |
| BOOST_CHECK(bind(&A::add, &a, _1)(i) == 11); |
| BOOST_CHECK(bind(&A::add, _1, 1)(a) == 11); |
| BOOST_CHECK(bind(&A::add, _1, 1)(make_const(&a)) == 11); |
| |
| BOOST_CHECK(bind(&A::add2, _1, 1, 1)(a) == 12); |
| BOOST_CHECK(bind(&A::add3, _1, 1, 1, 1)(a) == 13); |
| BOOST_CHECK(bind(&A::add4, _1, 1, 1, 1, 1)(a) == 14); |
| BOOST_CHECK(bind(&A::add5, _1, 1, 1, 1, 1, 1)(a) == 15); |
| BOOST_CHECK(bind(&A::add6, _1, 1, 1, 1, 1, 1, 1)(a) == 16); |
| BOOST_CHECK(bind(&A::add7, _1, 1, 1, 1, 1, 1, 1, 1)(a) == 17); |
| BOOST_CHECK(bind(&A::add8, _1, 1, 1, 1, 1, 1, 1, 1, 1)(a) == 18); |
| |
| // This should fail, as lambda functors store arguments as const |
| // bind(&A::add, a, _1); |
| } |
| |
| int test_main(int, char *[]) { |
| |
| int i = 1; int j = 2; int k = 3; |
| int result; |
| |
| // bind all parameters |
| BOOST_CHECK(bind(&sum_of_args_0)()==0); |
| BOOST_CHECK(bind(&sum_of_args_1, 1)()==1); |
| BOOST_CHECK(bind(&sum_of_args_2, 1, 2)()==3); |
| BOOST_CHECK(bind(&sum_of_args_3, 1, 2, 3)()==6); |
| BOOST_CHECK(bind(&sum_of_args_4, 1, 2, 3, 4)()==10); |
| BOOST_CHECK(bind(&sum_of_args_5, 1, 2, 3, 4, 5)()==15); |
| BOOST_CHECK(bind(&sum_of_args_6, 1, 2, 3, 4, 5, 6)()==21); |
| BOOST_CHECK(bind(&sum_of_args_7, 1, 2, 3, 4, 5, 6, 7)()==28); |
| BOOST_CHECK(bind(&sum_of_args_8, 1, 2, 3, 4, 5, 6, 7, 8)()==36); |
| BOOST_CHECK(bind(&sum_of_args_9, 1, 2, 3, 4, 5, 6, 7, 8, 9)()==45); |
| |
| // first parameter open |
| BOOST_CHECK(bind(&sum_of_args_0)()==0); |
| BOOST_CHECK(bind(&sum_of_args_1, _1)(i)==1); |
| BOOST_CHECK(bind(&sum_of_args_2, _1, 2)(i)==3); |
| BOOST_CHECK(bind(&sum_of_args_3, _1, 2, 3)(i)==6); |
| BOOST_CHECK(bind(&sum_of_args_4, _1, 2, 3, 4)(i)==10); |
| BOOST_CHECK(bind(&sum_of_args_5, _1, 2, 3, 4, 5)(i)==15); |
| BOOST_CHECK(bind(&sum_of_args_6, _1, 2, 3, 4, 5, 6)(i)==21); |
| BOOST_CHECK(bind(&sum_of_args_7, _1, 2, 3, 4, 5, 6, 7)(i)==28); |
| BOOST_CHECK(bind(&sum_of_args_8, _1, 2, 3, 4, 5, 6, 7, 8)(i)==36); |
| BOOST_CHECK(bind(&sum_of_args_9, _1, 2, 3, 4, 5, 6, 7, 8, 9)(i)==45); |
| |
| // two open arguments |
| BOOST_CHECK(bind(&sum_of_args_0)()==0); |
| BOOST_CHECK(bind(&sum_of_args_1, _1)(i)==1); |
| BOOST_CHECK(bind(&sum_of_args_2, _1, _2)(i, j)==3); |
| BOOST_CHECK(bind(&sum_of_args_3, _1, _2, 3)(i, j)==6); |
| BOOST_CHECK(bind(&sum_of_args_4, _1, _2, 3, 4)(i, j)==10); |
| BOOST_CHECK(bind(&sum_of_args_5, _1, _2, 3, 4, 5)(i, j)==15); |
| BOOST_CHECK(bind(&sum_of_args_6, _1, _2, 3, 4, 5, 6)(i, j)==21); |
| BOOST_CHECK(bind(&sum_of_args_7, _1, _2, 3, 4, 5, 6, 7)(i, j)==28); |
| BOOST_CHECK(bind(&sum_of_args_8, _1, _2, 3, 4, 5, 6, 7, 8)(i, j)==36); |
| BOOST_CHECK(bind(&sum_of_args_9, _1, _2, 3, 4, 5, 6, 7, 8, 9)(i, j)==45); |
| |
| // three open arguments |
| BOOST_CHECK(bind(&sum_of_args_0)()==0); |
| BOOST_CHECK(bind(&sum_of_args_1, _1)(i)==1); |
| BOOST_CHECK(bind(&sum_of_args_2, _1, _2)(i, j)==3); |
| BOOST_CHECK(bind(&sum_of_args_3, _1, _2, _3)(i, j, k)==6); |
| BOOST_CHECK(bind(&sum_of_args_4, _1, _2, _3, 4)(i, j, k)==10); |
| BOOST_CHECK(bind(&sum_of_args_5, _1, _2, _3, 4, 5)(i, j, k)==15); |
| BOOST_CHECK(bind(&sum_of_args_6, _1, _2, _3, 4, 5, 6)(i, j, k)==21); |
| BOOST_CHECK(bind(&sum_of_args_7, _1, _2, _3, 4, 5, 6, 7)(i, j, k)==28); |
| BOOST_CHECK(bind(&sum_of_args_8, _1, _2, _3, 4, 5, 6, 7, 8)(i, j, k)==36); |
| BOOST_CHECK(bind(&sum_of_args_9, _1, _2, _3, 4, 5, 6, 7, 8, 9)(i, j, k)==45); |
| |
| // function compositions with bind |
| BOOST_CHECK(bind(&sum_of_args_3, bind(&sum_of_args_2, _1, 2), 2, 3)(i)==8); |
| BOOST_CHECK( |
| bind(&sum_of_args_9, |
| bind(&sum_of_args_0), // 0 |
| bind(&sum_of_args_1, _1), // 1 |
| bind(&sum_of_args_2, _1, _2), // 3 |
| bind(&sum_of_args_3, _1, _2, _3), // 6 |
| bind(&sum_of_args_4, _1, _2, _3, 4), // 10 |
| bind(&sum_of_args_5, _1, _2, _3, 4, 5), // 15 |
| bind(&sum_of_args_6, _1, _2, _3, 4, 5, 6), // 21 |
| bind(&sum_of_args_7, _1, _2, _3, 4, 5, 6, 7), // 28 |
| bind(&sum_of_args_8, _1, _2, _3, 4, 5, 6, 7, 8) // 36 |
| )(i, j, k) == 120); |
| |
| // deeper nesting |
| result = |
| bind(&sum_of_args_1, // 12 |
| bind(&sum_of_args_4, // 12 |
| bind(&sum_of_args_2, // 3 |
| bind(&sum_of_args_1, // 1 |
| bind(&sum_of_args_1, _1) // 1 |
| ), |
| _2), |
| _2, |
| _3, |
| 4) |
| )(i, j, k); |
| BOOST_CHECK(result == 12); |
| |
| test_member_functions(); |
| |
| |
| return 0; |
| } |