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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/* $Rev$ $Date$ */
/**
* Test C++0x lambda expressions.
*/
#include <assert.h>
#include "function.hpp"
#include "sstream.hpp"
#include "fstream.hpp"
#include "perf.hpp"
namespace tuscany {
#ifdef HAS_CXX0X_LAMBDAS
const lambda<const int(const int)> inc(const int i) {
return [i](const int x)->const int {
return x + i;
};
}
const int square(const int x) {
return x * x;
}
const int mapLambda(const lambda<const int(const int)> f, int v) {
return f(v);
}
const bool testLambda() {
const lambda<const int(const int)> sq = square;
assert(sq(2) == 4);
assert(mapLambda(square, 2) == 4);
assert(mapLambda(sq, 2) == 4);
assert(mapLambda([](const int x)->const int { return x * x; }, 2) == 4);
const lambda<const int(const int)> incf = inc(10);
assert(incf(1) == 11);
assert(mapLambda(incf, 1) == 11);
assert(mapLambda(inc(10), 1) == 11);
const lambda<const int(const int)> il(incf);
assert(il(1) == 11);
const lambda<const int(const int)> sl(square);
assert(sl(2) == 4);
return true;
}
const double fib_aux(const double n, const double a, const double b) {
return n == 0.0? a : fib_aux(n - 1.0, b, a + b);
}
const bool fibMapPerf() {
const list<double> s = seq(0.0, 4999.0);
const list<double> r = map<double, double>([](const double n)->const double { return fib_aux(n, 0.0, 1.0); }, s);
assert(5000 == length(r));
return true;
}
const bool testCppPerf() {
cout << "Fibonacci map test " << (time([]()->const bool { return fibMapPerf(); }, 1, 1) / 5000) << " ms" << endl;
return true;
}
#endif
}
int main() {
const tuscany::gc_scoped_pool p;
tuscany::cout << "Testing..." << tuscany::endl;
#ifdef HAS_CXX0X_LAMBDAS
tuscany::testLambda();
tuscany::testCppPerf();
#else
tuscany::cout << "Skipped C++0x lambda tests" << tuscany::endl;
#endif
tuscany::cout << "OK" << tuscany::endl;
return 0;
}
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