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// phoenix_style_control_structures.cpp -- The Boost Lambda Library ------
//
// Copyright (C) 2000-2003 Jaakko Jrvi (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/lambda.hpp"
#include "boost/lambda/if.hpp"
#include "boost/lambda/loops.hpp"
#include <iostream>
#include <vector>
#include <list>
#include <algorithm>
#include <cmath>
#include <cassert>
#include <functional>
using namespace boost::lambda;
using namespace std;
// If-else, while, do-while, for statements
int test_main(int, char *[]) {
vector<int> v;
v.clear();
v.push_back(1);
v.push_back(2);
v.push_back(3);
v.push_back(4);
v.push_back(5);
v.push_back(6);
v.push_back(7);
v.push_back(8);
v.push_back(9);
v.push_back(10);
int sum = 0;
//////////////////////////////////
for_each(v.begin(), v.end(),
if_(_1 > 3 && _1 <= 8)
[
sum += _1
]
);
BOOST_CHECK(sum == 4+5+6+7+8);
int gt = 0, eq = 0, lt = 0;
//////////////////////////////////
for_each(v.begin(), v.end(),
if_(_1 > 5)
[
++var(gt)
]
.else_
[
if_(_1 == 5)
[
++var(eq)
]
.else_
[
++var(lt)
]
]
);
BOOST_CHECK(lt==4);
BOOST_CHECK(eq==1);
BOOST_CHECK(gt==5);
vector<int> t = v;
int counta = 0;
int countb = 0;
//////////////////////////////////
for_each(v.begin(), v.end(),
(
while_(_1--)
[
++var(counta)
],
++var(countb)
)
);
BOOST_CHECK(counta == 55);
BOOST_CHECK(countb == 10);
v = t;
counta = 0; countb = 0;
//////////////////////////////////
for_each(v.begin(), v.end(),
(
do_
[
++var(counta)
]
.while_(_1--),
++var(countb)
)
);
BOOST_CHECK(counta == (2+11)*10/2);
BOOST_CHECK(countb == 10);
v = t;
counta = 0; countb = 0;
//////////////////////////////////
int iii;
for_each(v.begin(), v.end(),
(
for_(var(iii) = 0, var(iii) < _1, ++var(iii))
[
++var(counta)
],
++var(countb)
)
);
BOOST_CHECK(counta == (1+10)*10/2);
BOOST_CHECK(countb == 10);
v = t;
return 0;
}
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