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Bassem Girgis
2018-12-20 17:34:07 -06:00
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noarch/include/prettyprint/prettyprint.hpp Normal file
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// Copyright Louis Delacroix 2010 - 2014.
// 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)
//
// A pretty printing library for C++
//
// Usage:
// Include this header, and operator<< will "just work".
#ifndef H_PRETTY_PRINT
#define H_PRETTY_PRINT
#include <cstddef>
#include <iterator>
#include <memory>
#include <ostream>
#include <set>
#include <tuple>
#include <type_traits>
#include <unordered_set>
#include <utility>
#include <valarray>
namespace pretty_print
{
namespace detail
{
// SFINAE type trait to detect whether T::const_iterator exists.
struct sfinae_base
{
using yes = char;
using no = yes[2];
};
template <typename T>
struct has_const_iterator : private sfinae_base
{
private:
template <typename C> static yes & test(typename C::const_iterator*);
template <typename C> static no & test(...);
public:
static const bool value = sizeof(test<T>(nullptr)) == sizeof(yes);
using type = T;
};
template <typename T>
struct has_begin_end : private sfinae_base
{
private:
template <typename C>
static yes & f(typename std::enable_if<
std::is_same<decltype(static_cast<typename C::const_iterator(C::*)() const>(&C::begin)),
typename C::const_iterator(C::*)() const>::value>::type *);
template <typename C> static no & f(...);
template <typename C>
static yes & g(typename std::enable_if<
std::is_same<decltype(static_cast<typename C::const_iterator(C::*)() const>(&C::end)),
typename C::const_iterator(C::*)() const>::value, void>::type*);
template <typename C> static no & g(...);
public:
static bool const beg_value = sizeof(f<T>(nullptr)) == sizeof(yes);
static bool const end_value = sizeof(g<T>(nullptr)) == sizeof(yes);
};
} // namespace detail
// Holds the delimiter values for a specific character type
template <typename TChar>
struct delimiters_values
{
using char_type = TChar;
const char_type * prefix;
const char_type * delimiter;
const char_type * postfix;
};
// Defines the delimiter values for a specific container and character type
template <typename T, typename TChar>
struct delimiters
{
using type = delimiters_values<TChar>;
static const type values;
};
// Functor to print containers. You can use this directly if you want
// to specificy a non-default delimiters type. The printing logic can
// be customized by specializing the nested template.
template <typename T,
typename TChar = char,
typename TCharTraits = ::std::char_traits<TChar>,
typename TDelimiters = delimiters<T, TChar>>
struct print_container_helper
{
using delimiters_type = TDelimiters;
using ostream_type = std::basic_ostream<TChar, TCharTraits>;
template <typename U>
struct printer
{
static void print_body(const U & c, ostream_type & stream)
{
using std::begin;
using std::end;
auto it = begin(c);
const auto the_end = end(c);
if (it != the_end)
{
for ( ; ; )
{
stream << *it;
if (++it == the_end) break;
if (delimiters_type::values.delimiter != NULL)
stream << delimiters_type::values.delimiter;
}
}
}
};
print_container_helper(const T & container)
: container_(container)
{ }
inline void operator()(ostream_type & stream) const
{
if (delimiters_type::values.prefix != NULL)
stream << delimiters_type::values.prefix;
printer<T>::print_body(container_, stream);
if (delimiters_type::values.postfix != NULL)
stream << delimiters_type::values.postfix;
}
private:
const T & container_;
};
// Specialization for pairs
template <typename T, typename TChar, typename TCharTraits, typename TDelimiters>
template <typename T1, typename T2>
struct print_container_helper<T, TChar, TCharTraits, TDelimiters>::printer<std::pair<T1, T2>>
{
using ostream_type = typename print_container_helper<T, TChar, TCharTraits, TDelimiters>::ostream_type;
static void print_body(const std::pair<T1, T2> & c, ostream_type & stream)
{
stream << c.first;
if (print_container_helper<T, TChar, TCharTraits, TDelimiters>::delimiters_type::values.delimiter != NULL)
stream << print_container_helper<T, TChar, TCharTraits, TDelimiters>::delimiters_type::values.delimiter;
stream << c.second;
}
};
// Specialization for tuples
template <typename T, typename TChar, typename TCharTraits, typename TDelimiters>
template <typename ...Args>
struct print_container_helper<T, TChar, TCharTraits, TDelimiters>::printer<std::tuple<Args...>>
{
using ostream_type = typename print_container_helper<T, TChar, TCharTraits, TDelimiters>::ostream_type;
using element_type = std::tuple<Args...>;
template <std::size_t I> struct Int { };
static void print_body(const element_type & c, ostream_type & stream)
{
tuple_print(c, stream, Int<0>());
}
static void tuple_print(const element_type &, ostream_type &, Int<sizeof...(Args)>)
{
}
static void tuple_print(const element_type & c, ostream_type & stream,
typename std::conditional<sizeof...(Args) != 0, Int<0>, std::nullptr_t>::type)
{
stream << std::get<0>(c);
tuple_print(c, stream, Int<1>());
}
template <std::size_t N>
static void tuple_print(const element_type & c, ostream_type & stream, Int<N>)
{
if (print_container_helper<T, TChar, TCharTraits, TDelimiters>::delimiters_type::values.delimiter != NULL)
stream << print_container_helper<T, TChar, TCharTraits, TDelimiters>::delimiters_type::values.delimiter;
stream << std::get<N>(c);
tuple_print(c, stream, Int<N + 1>());
}
};
// Prints a print_container_helper to the specified stream.
template<typename T, typename TChar, typename TCharTraits, typename TDelimiters>
inline std::basic_ostream<TChar, TCharTraits> & operator<<(
std::basic_ostream<TChar, TCharTraits> & stream,
const print_container_helper<T, TChar, TCharTraits, TDelimiters> & helper)
{
helper(stream);
return stream;
}
// Basic is_container template; specialize to derive from std::true_type for all desired container types
template <typename T>
struct is_container : public std::integral_constant<bool,
detail::has_const_iterator<T>::value &&
detail::has_begin_end<T>::beg_value &&
detail::has_begin_end<T>::end_value> { };
template <typename T, std::size_t N>
struct is_container<T[N]> : std::true_type { };
template <std::size_t N>
struct is_container<char[N]> : std::false_type { };
template <typename T>
struct is_container<std::valarray<T>> : std::true_type { };
template <typename T1, typename T2>
struct is_container<std::pair<T1, T2>> : std::true_type { };
template <typename ...Args>
struct is_container<std::tuple<Args...>> : std::true_type { };
// Default delimiters
template <typename T> struct delimiters<T, char> { static const delimiters_values<char> values; };
template <typename T> const delimiters_values<char> delimiters<T, char>::values = { "[", ", ", "]" };
template <typename T> struct delimiters<T, wchar_t> { static const delimiters_values<wchar_t> values; };
template <typename T> const delimiters_values<wchar_t> delimiters<T, wchar_t>::values = { L"[", L", ", L"]" };
// Delimiters for (multi)set and unordered_(multi)set
template <typename T, typename TComp, typename TAllocator>
struct delimiters< ::std::set<T, TComp, TAllocator>, char> { static const delimiters_values<char> values; };
template <typename T, typename TComp, typename TAllocator>
const delimiters_values<char> delimiters< ::std::set<T, TComp, TAllocator>, char>::values = { "{", ", ", "}" };
template <typename T, typename TComp, typename TAllocator>
struct delimiters< ::std::set<T, TComp, TAllocator>, wchar_t> { static const delimiters_values<wchar_t> values; };
template <typename T, typename TComp, typename TAllocator>
const delimiters_values<wchar_t> delimiters< ::std::set<T, TComp, TAllocator>, wchar_t>::values = { L"{", L", ", L"}" };
template <typename T, typename TComp, typename TAllocator>
struct delimiters< ::std::multiset<T, TComp, TAllocator>, char> { static const delimiters_values<char> values; };
template <typename T, typename TComp, typename TAllocator>
const delimiters_values<char> delimiters< ::std::multiset<T, TComp, TAllocator>, char>::values = { "{", ", ", "}" };
template <typename T, typename TComp, typename TAllocator>
struct delimiters< ::std::multiset<T, TComp, TAllocator>, wchar_t> { static const delimiters_values<wchar_t> values; };
template <typename T, typename TComp, typename TAllocator>
const delimiters_values<wchar_t> delimiters< ::std::multiset<T, TComp, TAllocator>, wchar_t>::values = { L"{", L", ", L"}" };
template <typename T, typename THash, typename TEqual, typename TAllocator>
struct delimiters< ::std::unordered_set<T, THash, TEqual, TAllocator>, char> { static const delimiters_values<char> values; };
template <typename T, typename THash, typename TEqual, typename TAllocator>
const delimiters_values<char> delimiters< ::std::unordered_set<T, THash, TEqual, TAllocator>, char>::values = { "{", ", ", "}" };
template <typename T, typename THash, typename TEqual, typename TAllocator>
struct delimiters< ::std::unordered_set<T, THash, TEqual, TAllocator>, wchar_t> { static const delimiters_values<wchar_t> values; };
template <typename T, typename THash, typename TEqual, typename TAllocator>
const delimiters_values<wchar_t> delimiters< ::std::unordered_set<T, THash, TEqual, TAllocator>, wchar_t>::values = { L"{", L", ", L"}" };
template <typename T, typename THash, typename TEqual, typename TAllocator>
struct delimiters< ::std::unordered_multiset<T, THash, TEqual, TAllocator>, char> { static const delimiters_values<char> values; };
template <typename T, typename THash, typename TEqual, typename TAllocator>
const delimiters_values<char> delimiters< ::std::unordered_multiset<T, THash, TEqual, TAllocator>, char>::values = { "{", ", ", "}" };
template <typename T, typename THash, typename TEqual, typename TAllocator>
struct delimiters< ::std::unordered_multiset<T, THash, TEqual, TAllocator>, wchar_t> { static const delimiters_values<wchar_t> values; };
template <typename T, typename THash, typename TEqual, typename TAllocator>
const delimiters_values<wchar_t> delimiters< ::std::unordered_multiset<T, THash, TEqual, TAllocator>, wchar_t>::values = { L"{", L", ", L"}" };
// Delimiters for pair and tuple
template <typename T1, typename T2> struct delimiters<std::pair<T1, T2>, char> { static const delimiters_values<char> values; };
template <typename T1, typename T2> const delimiters_values<char> delimiters<std::pair<T1, T2>, char>::values = { "(", ", ", ")" };
template <typename T1, typename T2> struct delimiters< ::std::pair<T1, T2>, wchar_t> { static const delimiters_values<wchar_t> values; };
template <typename T1, typename T2> const delimiters_values<wchar_t> delimiters< ::std::pair<T1, T2>, wchar_t>::values = { L"(", L", ", L")" };
template <typename ...Args> struct delimiters<std::tuple<Args...>, char> { static const delimiters_values<char> values; };
template <typename ...Args> const delimiters_values<char> delimiters<std::tuple<Args...>, char>::values = { "(", ", ", ")" };
template <typename ...Args> struct delimiters< ::std::tuple<Args...>, wchar_t> { static const delimiters_values<wchar_t> values; };
template <typename ...Args> const delimiters_values<wchar_t> delimiters< ::std::tuple<Args...>, wchar_t>::values = { L"(", L", ", L")" };
// Type-erasing helper class for easy use of custom delimiters.
// Requires TCharTraits = std::char_traits<TChar> and TChar = char or wchar_t, and MyDelims needs to be defined for TChar.
// Usage: "cout << pretty_print::custom_delims<MyDelims>(x)".
struct custom_delims_base
{
virtual ~custom_delims_base() { }
virtual std::ostream & stream(::std::ostream &) = 0;
virtual std::wostream & stream(::std::wostream &) = 0;
};
template <typename T, typename Delims>
struct custom_delims_wrapper : custom_delims_base
{
custom_delims_wrapper(const T & t_) : t(t_) { }
std::ostream & stream(std::ostream & s)
{
return s << print_container_helper<T, char, std::char_traits<char>, Delims>(t);
}
std::wostream & stream(std::wostream & s)
{
return s << print_container_helper<T, wchar_t, std::char_traits<wchar_t>, Delims>(t);
}
private:
const T & t;
};
template <typename Delims>
struct custom_delims
{
template <typename Container>
custom_delims(const Container & c) : base(new custom_delims_wrapper<Container, Delims>(c)) { }
std::unique_ptr<custom_delims_base> base;
};
template <typename TChar, typename TCharTraits, typename Delims>
inline std::basic_ostream<TChar, TCharTraits> & operator<<(std::basic_ostream<TChar, TCharTraits> & s, const custom_delims<Delims> & p)
{
return p.base->stream(s);
}
// A wrapper for a C-style array given as pointer-plus-size.
// Usage: std::cout << pretty_print_array(arr, n) << std::endl;
template<typename T>
struct array_wrapper_n
{
typedef const T * const_iterator;
typedef T value_type;
array_wrapper_n(const T * const a, size_t n) : _array(a), _n(n) { }
inline const_iterator begin() const { return _array; }
inline const_iterator end() const { return _array + _n; }
private:
const T * const _array;
size_t _n;
};
// A wrapper for hash-table based containers that offer local iterators to each bucket.
// Usage: std::cout << bucket_print(m, 4) << std::endl; (Prints bucket 5 of container m.)
template <typename T>
struct bucket_print_wrapper
{
typedef typename T::const_local_iterator const_iterator;
typedef typename T::size_type size_type;
const_iterator begin() const
{
return m_map.cbegin(n);
}
const_iterator end() const
{
return m_map.cend(n);
}
bucket_print_wrapper(const T & m, size_type bucket) : m_map(m), n(bucket) { }
private:
const T & m_map;
const size_type n;
};
} // namespace pretty_print
// Global accessor functions for the convenience wrappers
template<typename T>
inline pretty_print::array_wrapper_n<T> pretty_print_array(const T * const a, size_t n)
{
return pretty_print::array_wrapper_n<T>(a, n);
}
template <typename T> pretty_print::bucket_print_wrapper<T>
bucket_print(const T & m, typename T::size_type n)
{
return pretty_print::bucket_print_wrapper<T>(m, n);
}
// Main magic entry point: An overload snuck into namespace std.
// Can we do better?
namespace std
{
// Prints a container to the stream using default delimiters
template<typename T, typename TChar, typename TCharTraits>
inline typename enable_if< ::pretty_print::is_container<T>::value,
basic_ostream<TChar, TCharTraits> &>::type
operator<<(basic_ostream<TChar, TCharTraits> & stream, const T & container)
{
return stream << ::pretty_print::print_container_helper<T, TChar, TCharTraits>(container);
}
}
#endif // H_PRETTY_PRINT

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// Copyright Louis Delacroix 2010 - 2014.
// 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)
#ifndef H_PRETTY_PRINT
#define H_PRETTY_PRINT
#include <ostream>
#include <utility>
#include <iterator>
#include <set>
#ifndef NO_TR1
# include <tr1/tuple>
# include <tr1/unordered_set>
#endif
namespace pretty_print
{
template <bool, typename S, typename T> struct conditional { };
template <typename S, typename T> struct conditional<true, S, T> { typedef S type; };
template <typename S, typename T> struct conditional<false, S, T> { typedef T type; };
template <bool, typename T> struct enable_if { };
template <typename T> struct enable_if<true, T> { typedef T type; };
// SFINAE type trait to detect whether T::const_iterator exists.
template<typename T>
struct has_const_iterator
{
private:
typedef char yes;
typedef struct { char array[2]; } no;
template<typename C> static yes test(typename C::const_iterator*);
template<typename C> static no test(...);
public:
static const bool value = sizeof(test<T>(0)) == sizeof(yes);
typedef T type;
};
// SFINAE type trait to detect whether "T::const_iterator T::begin/end() const" exist.
template <typename T>
struct has_begin_end
{
struct Dummy { typedef void const_iterator; };
typedef typename conditional<has_const_iterator<T>::value, T, Dummy>::type TType;
typedef typename TType::const_iterator iter;
struct Fallback { iter begin() const; iter end() const; };
struct Derived : TType, Fallback { };
template<typename C, C> struct ChT;
template<typename C> static char (&f(ChT<iter (Fallback::*)() const, &C::begin>*))[1];
template<typename C> static char (&f(...))[2];
template<typename C> static char (&g(ChT<iter (Fallback::*)() const, &C::end>*))[1];
template<typename C> static char (&g(...))[2];
static bool const beg_value = sizeof(f<Derived>(0)) == 2;
static bool const end_value = sizeof(g<Derived>(0)) == 2;
};
// Basic is_container template; specialize to have value "true" for all desired container types
template<typename T> struct is_container { static const bool value = has_const_iterator<T>::value && has_begin_end<T>::beg_value && has_begin_end<T>::end_value; };
template<typename T, std::size_t N> struct is_container<T[N]> { static const bool value = true; };
template<std::size_t N> struct is_container<char[N]> { static const bool value = false; };
// Holds the delimiter values for a specific character type
template<typename TChar>
struct delimiters_values
{
typedef TChar char_type;
const TChar * prefix;
const TChar * delimiter;
const TChar * postfix;
};
// Defines the delimiter values for a specific container and character type
template<typename T, typename TChar>
struct delimiters
{
typedef delimiters_values<TChar> type;
static const type values;
};
// Default delimiters
template<typename T> struct delimiters<T, char> { static const delimiters_values<char> values; };
template<typename T> const delimiters_values<char> delimiters<T, char>::values = { "[", ", ", "]" };
template<typename T> struct delimiters<T, wchar_t> { static const delimiters_values<wchar_t> values; };
template<typename T> const delimiters_values<wchar_t> delimiters<T, wchar_t>::values = { L"[", L", ", L"]" };
// Delimiters for (multi)set and unordered_(multi)set
template<typename T, typename TComp, typename TAllocator>
struct delimiters< ::std::set<T, TComp, TAllocator>, char> { static const delimiters_values<char> values; };
template<typename T, typename TComp, typename TAllocator>
const delimiters_values<char> delimiters< ::std::set<T, TComp, TAllocator>, char>::values = { "{", ", ", "}" };
template<typename T, typename TComp, typename TAllocator>
struct delimiters< ::std::set<T, TComp, TAllocator>, wchar_t> { static const delimiters_values<wchar_t> values; };
template<typename T, typename TComp, typename TAllocator>
const delimiters_values<wchar_t> delimiters< ::std::set<T, TComp, TAllocator>, wchar_t>::values = { L"{", L", ", L"}" };
template<typename T, typename TComp, typename TAllocator>
struct delimiters< ::std::multiset<T, TComp, TAllocator>, char> { static const delimiters_values<char> values; };
template<typename T, typename TComp, typename TAllocator>
const delimiters_values<char> delimiters< ::std::multiset<T, TComp, TAllocator>, char>::values = { "{", ", ", "}" };
template<typename T, typename TComp, typename TAllocator>
struct delimiters< ::std::multiset<T, TComp, TAllocator>, wchar_t> { static const delimiters_values<wchar_t> values; };
template<typename T, typename TComp, typename TAllocator>
const delimiters_values<wchar_t> delimiters< ::std::multiset<T, TComp, TAllocator>, wchar_t>::values = { L"{", L", ", L"}" };
#ifndef NO_TR1
template<typename T, typename THash, typename TEqual, typename TAllocator>
struct delimiters< ::std::tr1::unordered_set<T, THash, TEqual, TAllocator>, char> { static const delimiters_values<char> values; };
template<typename T, typename THash, typename TEqual, typename TAllocator>
const delimiters_values<char> delimiters< ::std::tr1::unordered_set<T, THash, TEqual, TAllocator>, char>::values = { "{", ", ", "}" };
template<typename T, typename THash, typename TEqual, typename TAllocator>
struct delimiters< ::std::tr1::unordered_set<T, THash, TEqual, TAllocator>, wchar_t> { static const delimiters_values<wchar_t> values; };
template<typename T, typename THash, typename TEqual, typename TAllocator>
const delimiters_values<wchar_t> delimiters< ::std::tr1::unordered_set<T, THash, TEqual, TAllocator>, wchar_t>::values = { L"{", L", ", L"}" };
template<typename T, typename THash, typename TEqual, typename TAllocator>
struct delimiters< ::std::tr1::unordered_multiset<T, THash, TEqual, TAllocator>, char> { static const delimiters_values<char> values; };
template<typename T, typename THash, typename TEqual, typename TAllocator>
const delimiters_values<char> delimiters< ::std::tr1::unordered_multiset<T, THash, TEqual, TAllocator>, char>::values = { "{", ", ", "}" };
template<typename T, typename THash, typename TEqual, typename TAllocator>
struct delimiters< ::std::tr1::unordered_multiset<T, THash, TEqual, TAllocator>, wchar_t> { static const delimiters_values<wchar_t> values; };
template<typename T, typename THash, typename TEqual, typename TAllocator>
const delimiters_values<wchar_t> delimiters< ::std::tr1::unordered_multiset<T, THash, TEqual, TAllocator>, wchar_t>::values = { L"{", L", ", L"}" };
#endif
// Delimiters for pair (reused for tuple, see below)
template<typename T1, typename T2> struct delimiters< ::std::pair<T1, T2>, char> { static const delimiters_values<char> values; };
template<typename T1, typename T2> const delimiters_values<char> delimiters< ::std::pair<T1, T2>, char>::values = { "(", ", ", ")" };
template<typename T1, typename T2> struct delimiters< ::std::pair<T1, T2>, wchar_t> { static const delimiters_values<wchar_t> values; };
template<typename T1, typename T2> const delimiters_values<wchar_t> delimiters< ::std::pair<T1, T2>, wchar_t>::values = { L"(", L", ", L")" };
// Iterator microtrait class to handle C arrays uniformly
template <typename T> struct get_iterator { typedef typename T::const_iterator iter; };
template <typename T, std::size_t N> struct get_iterator<T[N]> { typedef const T * iter; };
template <typename T> typename enable_if<has_const_iterator<T>::value, typename T::const_iterator>::type begin(const T & c) { return c.begin(); }
template <typename T> typename enable_if<has_const_iterator<T>::value, typename T::const_iterator>::type end(const T & c) { return c.end(); }
template <typename T, size_t N> const T * begin(const T(&x)[N]) { return &x[0]; }
template <typename T, size_t N> const T * end (const T(&x)[N]) { return &x[0] + N; }
// Functor to print containers. You can use this directly if you want to specificy a non-default delimiters type.
template<typename T, typename TChar = char, typename TCharTraits = ::std::char_traits<TChar>, typename TDelimiters = delimiters<T, TChar> >
struct print_container_helper
{
typedef TChar char_type;
typedef TDelimiters delimiters_type;
typedef std::basic_ostream<TChar, TCharTraits> ostream_type;
typedef typename get_iterator<T>::iter TIter;
print_container_helper(const T & container)
: _container(container)
{
}
inline void operator()(ostream_type & stream) const
{
if (delimiters_type::values.prefix != NULL)
stream << delimiters_type::values.prefix;
if (begin(_container) != end(_container))
for (TIter it = begin(_container), it_end = end(_container); ; )
{
stream << *it;
if (++it == it_end) break;
if (delimiters_type::values.delimiter != NULL)
stream << delimiters_type::values.delimiter;
}
if (delimiters_type::values.postfix != NULL)
stream << delimiters_type::values.postfix;
}
private:
const T & _container;
};
// Type-erasing helper class for easy use of custom delimiters.
// Requires TCharTraits = std::char_traits<TChar> and TChar = char or wchar_t, and MyDelims needs to be defined for TChar.
// Usage: "cout << pretty_print::custom_delims<MyDelims>(x)".
struct custom_delims_base
{
virtual ~custom_delims_base() { }
virtual ::std::ostream & stream(::std::ostream &) = 0;
virtual ::std::wostream & stream(::std::wostream &) = 0;
};
template<typename T, typename Delims>
struct custom_delims_wrapper : public custom_delims_base
{
custom_delims_wrapper(const T & t_) : t(t_) { }
::std::ostream & stream(::std::ostream & s)
{
return s << ::pretty_print::print_container_helper<T, char, ::std::char_traits<char>, Delims>(t);
}
::std::wostream & stream(::std::wostream & s)
{
return s << ::pretty_print::print_container_helper<T, wchar_t, ::std::char_traits<wchar_t>, Delims>(t);
}
private:
const T & t;
};
template<typename Delims>
struct custom_delims
{
template<typename Container> custom_delims(const Container & c) : base(new custom_delims_wrapper<Container, Delims>(c)) { }
~custom_delims() { delete base; }
custom_delims_base * base;
};
} // namespace pretty_print
template<typename TChar, typename TCharTraits, typename Delims>
inline std::basic_ostream<TChar, TCharTraits> & operator<<(std::basic_ostream<TChar, TCharTraits> & s, const pretty_print::custom_delims<Delims> & p)
{
return p.base->stream(s);
}
// Template aliases for char and wchar_t delimiters
// Enable these if you have compiler support
//
// Implement as "template<T, C, A> const sdelims::type sdelims<std::set<T,C,A>>::values = { ... }."
//template<typename T> using pp_sdelims = pretty_print::delimiters<T, char>;
//template<typename T> using pp_wsdelims = pretty_print::delimiters<T, wchar_t>;
namespace std
{
// Prints a print_container_helper to the specified stream.
template<typename T, typename TChar, typename TCharTraits, typename TDelimiters>
inline basic_ostream<TChar, TCharTraits> & operator<<(basic_ostream<TChar, TCharTraits> & stream,
const ::pretty_print::print_container_helper<T, TChar, TCharTraits, TDelimiters> & helper)
{
helper(stream);
return stream;
}
// Prints a container to the stream using default delimiters
template<typename T, typename TChar, typename TCharTraits>
inline typename ::pretty_print::enable_if< ::pretty_print::is_container<T>::value, basic_ostream<TChar, TCharTraits>&>::type
operator<<(basic_ostream<TChar, TCharTraits> & stream, const T & container)
{
return stream << ::pretty_print::print_container_helper<T, TChar, TCharTraits>(container);
}
// Prints a pair to the stream using delimiters from delimiters<std::pair<T1, T2>>.
template<typename T1, typename T2, typename TChar, typename TCharTraits>
inline basic_ostream<TChar, TCharTraits> & operator<<(basic_ostream<TChar, TCharTraits> & stream, const pair<T1, T2> & value)
{
if (::pretty_print::delimiters<pair<T1, T2>, TChar>::values.prefix != NULL)
stream << ::pretty_print::delimiters<pair<T1, T2>, TChar>::values.prefix;
stream << value.first;
if (::pretty_print::delimiters<pair<T1, T2>, TChar>::values.delimiter != NULL)
stream << ::pretty_print::delimiters<pair<T1, T2>, TChar>::values.delimiter;
stream << value.second;
if (::pretty_print::delimiters<pair<T1, T2>, TChar>::values.postfix != NULL)
stream << ::pretty_print::delimiters<pair<T1, T2>, TChar>::values.postfix;
return stream;
}
} // namespace std
#ifndef NO_TR1
// Prints a tuple to the stream using delimiters from delimiters<std::pair<tuple_dummy_t, tuple_dummy_t>>.
namespace pretty_print
{
struct tuple_dummy_t { }; // Just if you want special delimiters for tuples.
typedef std::pair<tuple_dummy_t, tuple_dummy_t> tuple_dummy_pair;
template<typename Tuple, size_t N, typename TChar, typename TCharTraits>
struct pretty_tuple_helper
{
static inline void print(::std::basic_ostream<TChar, TCharTraits> & stream, const Tuple & value)
{
pretty_tuple_helper<Tuple, N - 1, TChar, TCharTraits>::print(stream, value);
if (delimiters<tuple_dummy_pair, TChar>::values.delimiter != NULL)
stream << delimiters<tuple_dummy_pair, TChar>::values.delimiter;
stream << std::tr1::get<N - 1>(value);
}
};
template<typename Tuple, typename TChar, typename TCharTraits>
struct pretty_tuple_helper<Tuple, 1, TChar, TCharTraits>
{
static inline void print(::std::basic_ostream<TChar, TCharTraits> & stream, const Tuple & value)
{
stream << ::std::tr1::get<0>(value);
}
};
} // namespace pretty_print
/* The following macros allow us to write "template <TUPLE_PARAMAS> std::tuple<TUPLE_ARGS>"
* uniformly in C++0x compilers and in MS Visual Studio 2010.
* Credits to STL: http://channel9.msdn.com/Shows/Going+Deep/C9-Lectures-Stephan-T-Lavavej-Advanced-STL-6-of-n
*/
#define TUPLE_PARAMS \
typename T0, typename T1, typename T2, typename T3, typename T4, \
typename T5, typename T6, typename T7, typename T8, typename T9
#define TUPLE_ARGS T0, T1, T2, T3, T4, T5, T6, T7, T8, T9
namespace std
{
template<typename TChar, typename TCharTraits, TUPLE_PARAMS>
inline basic_ostream<TChar, TCharTraits> & operator<<(basic_ostream<TChar, TCharTraits> & stream, const tr1::tuple<TUPLE_ARGS> & value)
{
if (::pretty_print::delimiters< ::pretty_print::tuple_dummy_pair, TChar>::values.prefix != NULL)
stream << ::pretty_print::delimiters< ::pretty_print::tuple_dummy_pair, TChar>::values.prefix;
::pretty_print::pretty_tuple_helper<const tr1::tuple<TUPLE_ARGS> &, tr1::tuple_size<tr1::tuple<TUPLE_ARGS> >::value, TChar, TCharTraits>::print(stream, value);
if (::pretty_print::delimiters< ::pretty_print::tuple_dummy_pair, TChar>::values.postfix != NULL)
stream << ::pretty_print::delimiters< ::pretty_print::tuple_dummy_pair, TChar>::values.postfix;
return stream;
}
} // namespace std
#endif // NO_TR1
// A wrapper for raw C-style arrays. Usage: int arr[] = { 1, 2, 4, 8, 16 }; std::cout << wrap_array(arr) << ...
namespace pretty_print
{
template<typename T>
struct array_wrapper_n
{
typedef const T * const_iterator;
typedef T value_type;
array_wrapper_n(const T * const a, size_t n) : _array(a), _n(n) { }
inline const_iterator begin() const { return _array; }
inline const_iterator end() const { return _array + _n; }
private:
const T * const _array;
size_t _n;
};
} // namespace pretty_print
template<typename T>
inline pretty_print::array_wrapper_n<T> pretty_print_array(const T * const a, size_t n)
{
return pretty_print::array_wrapper_n<T>(a, n);
}
#endif