stl_helpers.hh

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/*
 * Copyright (c) 2010 The Hewlett-Packard Development Company
 * All rights reserved.
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 * neither the name of the copyright holders nor the names of its
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef __BASE_STL_HELPERS_HH__
#define __BASE_STL_HELPERS_HH__
 
#include <algorithm>
#include <iostream>
#include <type_traits>
#include <vector>
 
#include "base/compiler.hh"
 
namespace gem5
{
 
namespace stl_helpers
{
 
template <typename T, typename Enabled=void>
struct IsHelpedContainer : public std::false_type {};
 
template <typename ...Types>
struct IsHelpedContainer<std::vector<Types...>> : public std::true_type {};
 
template <typename ...Types>
constexpr bool IsHelpedContainerV = IsHelpedContainer<Types...>::value;
 
template <typename T>
std::enable_if_t<IsHelpedContainerV<T>, std::ostream &>
operator<<(std::ostream& out, const T &t)
{
    out << "[ ";
    bool first = true;
    auto printer = [&first, &out](const auto &elem) {
        if (first)
            out << elem;
        else
            out << " " << elem;
    };
    std::for_each(t.begin(), t.end(), printer);
    out << " ]";
    out << std::flush;
    return out;
}
 
} // namespace stl_helpers
} // namespace gem5
 
#endif // __BASE_STL_HELPERS_HH__