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Jose Caban
260
extern/ustl/1.5/uspecial.h
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260
extern/ustl/1.5/uspecial.h
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// This file is part of the uSTL library, an STL implementation.
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//
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// Copyright (c) 2005 by Mike Sharov <msharov@users.sourceforge.net>
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// This file is free software, distributed under the MIT License.
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#ifndef USPECIAL_H_947ADYOU0ARE3YOU2REALLY8ARE44CE0
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#define USPECIAL_H_947ADYOU0ARE3YOU2REALLY8ARE44CE0
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#include "uvector.h"
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#include "ustring.h"
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#include "uset.h"
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#include "umultiset.h"
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#include "ubitset.h"
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#include "ulaalgo.h"
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#include "uctralgo.h"
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#include "ufunction.h"
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#include "uctrstrm.h"
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#include "sistream.h"
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#include <ctype.h>
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namespace ustl {
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//----------------------------------------------------------------------
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// Alogrithm specializations not in use by the library code.
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//----------------------------------------------------------------------
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template <> inline void swap (cmemlink& a, cmemlink& b) { a.swap (b); }
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template <> inline void swap (memlink& a, memlink& b) { a.swap (b); }
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template <> inline void swap (memblock& a, memblock& b) { a.swap (b); }
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template <> inline void swap (string& a, string& b) { a.swap (b); }
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#define TEMPLATE_SWAP_PSPEC(type, template_decl) \
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template_decl inline void swap (type& a, type& b) { a.swap (b); }
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TEMPLATE_SWAP_PSPEC (TEMPLATE_TYPE1 (vector,T), TEMPLATE_DECL1 (T))
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TEMPLATE_SWAP_PSPEC (TEMPLATE_TYPE1 (set,T), TEMPLATE_DECL1 (T))
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TEMPLATE_SWAP_PSPEC (TEMPLATE_TYPE1 (multiset,T), TEMPLATE_DECL1 (T))
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TEMPLATE_SWAP_PSPEC (TEMPLATE_TYPE2 (tuple,N,T), TEMPLATE_FULL_DECL2 (size_t,N,typename,T))
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//----------------------------------------------------------------------
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// Streamable definitions. Not used in the library and require streams.
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//----------------------------------------------------------------------
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//----{ pair }----------------------------------------------------------
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/// \brief Reads pair \p p from stream \p is.
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template <typename T1, typename T2>
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istream& operator>> (istream& is, pair<T1,T2>& p)
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{
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is >> p.first;
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is.align (alignof(p.second));
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is >> p.second;
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is.align (alignof(p.first));
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return (is);
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}
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/// Writes pair \p p to stream \p os.
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template <typename T1, typename T2>
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ostream& operator<< (ostream& os, const pair<T1,T2>& p)
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{
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os << p.first;
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os.align (alignof(p.second));
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os << p.second;
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os.align (alignof(p.first));
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return (os);
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}
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/// Writes pair \p p to stream \p os.
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template <typename T1, typename T2>
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ostringstream& operator<< (ostringstream& os, const pair<T1,T2>& p)
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{
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os << '(' << p.first << ',' << p.second << ')';
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return (os);
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}
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/// Returns the written size of the object.
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template <typename T1, typename T2>
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struct object_stream_size<pair<T1,T2> > {
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inline size_t operator()(const pair<T1,T2>& v) const
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{
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return (Align (stream_size_of(v.first), alignof(v.second)) +
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Align (stream_size_of(v.second), alignof(v.first)));
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}
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};
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/// \brief Takes a pair and returns pair.first
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/// This is an extension, available in uSTL and the SGI STL.
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template <typename Pair> struct select1st : public unary_function<Pair,typename Pair::first_type> {
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typedef typename Pair::first_type result_type;
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inline const result_type& operator()(const Pair& a) const { return (a.first); }
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inline result_type& operator()(Pair& a) const { return (a.first); }
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};
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/// \brief Takes a pair and returns pair.second
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/// This is an extension, available in uSTL and the SGI STL.
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template <typename Pair> struct select2nd : public unary_function<Pair,typename Pair::second_type> {
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typedef typename Pair::second_type result_type;
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inline const result_type& operator()(const Pair& a) const { return (a.second); }
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inline result_type& operator()(Pair& a) const { return (a.second); }
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};
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/// \brief Converts a const_iterator pair into an iterator pair
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/// Useful for converting pair ranges returned by equal_range, for instance.
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/// This is an extension, available in uSTL.
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template <typename Container>
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inline pair<typename Container::iterator, typename Container::iterator>
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unconst (const pair<typename Container::const_iterator, typename Container::const_iterator>& i, Container&)
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{
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typedef pair<typename Container::iterator, typename Container::iterator> unconst_pair_t;
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return (*noalias_cast<unconst_pair_t*>(&i));
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}
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//----{ vector }--------------------------------------------------------
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template <typename T>
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inline size_t alignof (const vector<T>&)
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{
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typedef typename vector<T>::written_size_type written_size_type;
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return (alignof (written_size_type()));
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}
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//----{ bitset }--------------------------------------------------------
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/// Writes bitset \p v into stream \p os.
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template <size_t Size>
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istringstream& operator>> (istringstream& is, bitset<Size>& v)
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{
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char c;
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for (int i = Size; --i >= 0 && (is >> c).good();)
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v.set (i, c == '1');
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return (is);
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}
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//----{ tuple }---------------------------------------------------------
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template <size_t N, typename T>
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inline istream& operator>> (istream& is, tuple<N,T>& v)
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{ v.read (is); return (is); }
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template <size_t N, typename T>
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inline ostream& operator<< (ostream& os, const tuple<N,T>& v)
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{ v.write (os); return (os); }
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template <size_t N, typename T>
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inline ostringstream& operator<< (ostringstream& os, const tuple<N,T>& v)
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{ v.text_write (os); return (os); }
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template <size_t N, typename T>
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struct numeric_limits<tuple<N,T> > {
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typedef numeric_limits<T> value_limits;
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static inline tuple<N,T> min (void) { tuple<N,T> v; fill (v, value_limits::min()); return (v); }
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static inline tuple<N,T> max (void) { tuple<N,T> v; fill (v, value_limits::max()); return (v); }
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static const bool is_signed = value_limits::is_signed;
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static const bool is_integer = value_limits::is_integer;
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static const bool is_integral = value_limits::is_integral;
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};
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template <size_t N, typename T>
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inline size_t alignof (const tuple<N,T>&) { return (alignof (NullValue<T>())); }
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template <typename T, typename IntT>
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inline ostringstream& chartype_text_write (ostringstream& os, const T& v)
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{
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os.format (_FmtPrtChr[!isprint(v)], v);
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return (os);
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}
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template <>
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inline ostringstream& container_element_text_write (ostringstream& os, const uint8_t& v)
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{ return (chartype_text_write<uint8_t, unsigned int> (os, v)); }
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template <>
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inline ostringstream& container_element_text_write (ostringstream& os, const int8_t& v)
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{ return (chartype_text_write<int8_t, int> (os, v)); }
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//----{ matrix }--------------------------------------------------------
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/// Writes tuple \p v into stream \p os.
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template <size_t NX, size_t NY, typename T>
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ostringstream& operator<< (ostringstream& os, const matrix<NX,NY,T>& v)
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{
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os << '(';
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for (uoff_t row = 0; row < NY; ++ row) {
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os << '(';
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for (uoff_t column = 0; column < NX; ++column)
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os << v[row][column] << ",)"[column == NX-1];
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}
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os << ')';
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return (os);
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}
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//----{ long4grain }----------------------------------------------------
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#if SIZE_OF_LONG == 8 && HAVE_INT64_T
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// Helper class for long4grain and ptr4grain wrappers.
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class _long4grain {
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public:
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inline _long4grain (uint64_t v) : m_v (v) {}
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#if __x86_64__
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inline void read (istream& is)
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{
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assert (is.aligned(4));
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#if WANT_STREAM_BOUNDS_CHECKING
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if (!is.verify_remaining ("read", "long4grain", sizeof(m_v))) return;
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#else
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assert (is.remaining() >= sizeof(m_v));
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#endif
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m_v = *reinterpret_cast<const uint64_t*>(is.ipos());
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is.skip (sizeof(m_v));
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}
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inline void write (ostream& os) const
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{
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assert (os.aligned(4));
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#if WANT_STREAM_BOUNDS_CHECKING
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if (!os.verify_remaining ("write", "long4grain", sizeof(m_v))) return;
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#else
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assert (os.remaining() >= sizeof(m_v));
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#endif
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*reinterpret_cast<uint64_t*>(os.ipos()) = m_v;
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os.skip (sizeof(m_v));
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}
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#elif USTL_BYTE_ORDER == USTL_BIG_ENDIAN
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inline void read (istream& is) { uint32_t vl, vh; is >> vh >> vl; m_v = (uint64_t(vh) << 32) | uint64_t(vl); }
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inline void write (ostream& os) const { os << uint32_t(m_v >> 32) << uint32_t(m_v); }
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#else
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inline void read (istream& is) { uint32_t vl, vh; is >> vl >> vh; m_v = (uint64_t(vh) << 32) | uint64_t(vl); }
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inline void write (ostream& os) const { os << uint32_t(m_v) << uint32_t(m_v >> 32); }
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#endif
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inline size_t stream_size (void) const { return (stream_size_of(m_v)); }
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private:
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uint64_t m_v;
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};
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/// Wrap long values to allow writing them on 4-grain even on 64bit platforms.
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inline _long4grain& long4grain (unsigned long& v) { asm("":"+m"(v)); return (*noalias_cast<_long4grain*>(&v)); }
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/// Wrap long values to allow writing them on 4-grain even on 64bit platforms.
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inline const _long4grain long4grain (const unsigned long& v) { return (_long4grain(v)); }
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/// Wrap pointer values to allow writing them on 4-grain even on 64bit platforms.
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template <typename T>
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inline _long4grain& ptr4grain (T*& p) { asm("":"+m"(p)); return (*noalias_cast<_long4grain*>(&p)); }
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/// Wrap pointer values to allow writing them on 4-grain even on 64bit platforms.
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template <typename T>
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inline const _long4grain ptr4grain (const T* const& p) { return (_long4grain(uintptr_t(p))); }
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#else // if not SIZE_OF_LONG == 8 && HAVE_INT64_T
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inline unsigned long& long4grain (unsigned long& v) { return (v); }
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inline const unsigned long& long4grain (const unsigned long& v) { return (v); }
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template <typename T> inline T*& ptr4grain (T*& p) { return (p); }
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template <typename T> inline const T* const& ptr4grain (const T* const& p) { return (p); }
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#endif // SIZE_OF_LONG == 8
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//----------------------------------------------------------------------
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} // namespace ustl
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// This is here because there really is no other place to put it.
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#if SIZE_OF_BOOL != SIZE_OF_CHAR
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// bool is a big type on some machines (like DEC Alpha), so it's written as a byte.
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ALIGNOF(bool, sizeof(uint8_t))
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CAST_STREAMABLE(bool, uint8_t)
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#endif
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#if SIZE_OF_LONG == 8 && HAVE_INT64_T
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ALIGNOF (_long4grain, 4)
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#endif
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#endif
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