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/***************************************************************************
* blitz/vecpick.h Declaration of the VectorPick<T_numtype> class
*
* $Id: vecpick.h 1414 2005-11-01 22:04:59Z cookedm $
*
* Copyright (C) 1997-2001 Todd Veldhuizen <tveldhui@oonumerics.org>
*
* This code was relicensed under the modified BSD license for use in SciPy
* by Todd Veldhuizen (see LICENSE.txt in the weave directory).
*
*
* Suggestions: blitz-dev@oonumerics.org
* Bugs: blitz-bugs@oonumerics.org
*
* For more information, please see the Blitz++ Home Page:
* http://oonumerics.org/blitz/
*
***************************************************************************/
#ifndef BZ_VECPICK_H
#define BZ_VECPICK_H
#include <blitz/vector.h>
BZ_NAMESPACE(blitz)
// Forward declarations
template<typename P_numtype> class VectorPickIter;
template<typename P_numtype> class VectorPickIterConst;
// Declaration of class VectorPick<P_numtype>
template<typename P_numtype>
class VectorPick {
public:
//////////////////////////////////////////////
// Public Types
//////////////////////////////////////////////
typedef P_numtype T_numtype;
typedef Vector<T_numtype> T_vector;
typedef Vector<int> T_indexVector;
typedef VectorPick<T_numtype> T_pick;
typedef VectorPickIter<T_numtype> T_iterator;
typedef VectorPickIterConst<T_numtype> T_constIterator;
//////////////////////////////////////////////
// Constructors //
//////////////////////////////////////////////
VectorPick(T_vector& vector, T_indexVector& indexarg)
: vector_(vector), index_(indexarg)
{ }
VectorPick(const T_pick& vecpick)
: vector_(const_cast<T_vector&>(vecpick.vector_)),
index_(const_cast<T_indexVector&>(vecpick.index_))
{ }
VectorPick(T_pick& vecpick, Range r)
: vector_(vecpick.vector_), index_(vecpick.index_[r])
{ }
//////////////////////////////////////////////
// Member functions
//////////////////////////////////////////////
T_iterator beginFast()
{ return VectorPickIter<T_numtype>(*this); }
T_constIterator beginFast() const
{ return VectorPickIterConst<T_numtype>(*this); }
// T_vector copy() const;
// T_iterator end();
// T_constIterator end() const;
T_indexVector& indexSet()
{ return index_; }
const T_indexVector& indexSet() const
{ return index_; }
int length() const
{ return index_.length(); }
void setVector(Vector<T_numtype>& x)
{ vector_.reference(x); }
void setIndex(Vector<int>& index)
{ index_.reference(index); }
T_vector& vector()
{ return vector_; }
const T_vector& vector() const
{ return vector_; }
/////////////////////////////////////////////
// Library-internal member functions
// These are undocumented and may change or
// disappear in future releases.
/////////////////////////////////////////////
int _bz_suggestLength() const
{ return index_.length(); }
bool _bz_hasFastAccess() const
{ return vector_._bz_hasFastAccess() && index_._bz_hasFastAccess(); }
T_numtype& _bz_fastAccess(int i)
{ return vector_._bz_fastAccess(index_._bz_fastAccess(i)); }
T_numtype _bz_fastAccess(int i) const
{ return vector_._bz_fastAccess(index_._bz_fastAccess(i)); }
_bz_VecExpr<T_constIterator> _bz_asVecExpr() const
{ return _bz_VecExpr<T_constIterator>(beginFast()); }
//////////////////////////////////////////////
// Subscripting operators
//////////////////////////////////////////////
T_numtype operator()(int i) const
{
BZPRECONDITION(index_.stride() == 1);
BZPRECONDITION(vector_.stride() == 1);
BZPRECONDITION(i < index_.length());
BZPRECONDITION(index_[i] < vector_.length());
return vector_(index_(i));
}
T_numtype& operator()(int i)
{
BZPRECONDITION(index_.stride() == 1);
BZPRECONDITION(vector_.stride() == 1);
BZPRECONDITION(i < index_.length());
BZPRECONDITION(index_[i] < vector_.length());
return vector_(index_(i));
}
T_numtype operator[](int i) const
{
BZPRECONDITION(index_.stride() == 1);
BZPRECONDITION(vector_.stride() == 1);
BZPRECONDITION(i < index_.length());
BZPRECONDITION(index_[i] < vector_.length());
return vector_[index_[i]];
}
T_numtype& operator[](int i)
{
BZPRECONDITION(index_.stride() == 1);
BZPRECONDITION(vector_.stride() == 1);
BZPRECONDITION(i < index_.length());
BZPRECONDITION(index_[i] < vector_.length());
return vector_[index_[i]];
}
T_pick operator()(Range r)
{
return T_pick(*this, index_[r]);
}
T_pick operator[](Range r)
{
return T_pick(*this, index_[r]);
}
//////////////////////////////////////////////
// Assignment operators
//////////////////////////////////////////////
// Scalar operand
T_pick& operator=(T_numtype);
T_pick& operator+=(T_numtype);
T_pick& operator-=(T_numtype);
T_pick& operator*=(T_numtype);
T_pick& operator/=(T_numtype);
T_pick& operator%=(T_numtype);
T_pick& operator^=(T_numtype);
T_pick& operator&=(T_numtype);
T_pick& operator|=(T_numtype);
T_pick& operator>>=(int);
T_pick& operator<<=(int);
// Vector operand
template<typename P_numtype2> T_pick& operator=(const Vector<P_numtype2> &);
template<typename P_numtype2> T_pick& operator+=(const Vector<P_numtype2> &);
template<typename P_numtype2> T_pick& operator-=(const Vector<P_numtype2> &);
template<typename P_numtype2> T_pick& operator*=(const Vector<P_numtype2> &);
template<typename P_numtype2> T_pick& operator/=(const Vector<P_numtype2> &);
template<typename P_numtype2> T_pick& operator%=(const Vector<P_numtype2> &);
template<typename P_numtype2> T_pick& operator^=(const Vector<P_numtype2> &);
template<typename P_numtype2> T_pick& operator&=(const Vector<P_numtype2> &);
template<typename P_numtype2> T_pick& operator|=(const Vector<P_numtype2> &);
template<typename P_numtype2> T_pick& operator>>=(const Vector<P_numtype2> &);
template<typename P_numtype2> T_pick& operator<<=(const Vector<P_numtype2> &);
// Vector expression operand
template<typename P_expr> T_pick& operator=(_bz_VecExpr<P_expr>);
template<typename P_expr> T_pick& operator+=(_bz_VecExpr<P_expr>);
template<typename P_expr> T_pick& operator-=(_bz_VecExpr<P_expr>);
template<typename P_expr> T_pick& operator*=(_bz_VecExpr<P_expr>);
template<typename P_expr> T_pick& operator/=(_bz_VecExpr<P_expr>);
template<typename P_expr> T_pick& operator%=(_bz_VecExpr<P_expr>);
template<typename P_expr> T_pick& operator^=(_bz_VecExpr<P_expr>);
template<typename P_expr> T_pick& operator&=(_bz_VecExpr<P_expr>);
template<typename P_expr> T_pick& operator|=(_bz_VecExpr<P_expr>);
template<typename P_expr> T_pick& operator>>=(_bz_VecExpr<P_expr>);
template<typename P_expr> T_pick& operator<<=(_bz_VecExpr<P_expr>);
// Range operand
T_pick& operator=(Range);
T_pick& operator+=(Range);
T_pick& operator-=(Range);
T_pick& operator*=(Range);
T_pick& operator/=(Range);
T_pick& operator%=(Range);
T_pick& operator^=(Range);
T_pick& operator&=(Range);
T_pick& operator|=(Range);
T_pick& operator>>=(Range);
T_pick& operator<<=(Range);
// Vector pick operand
template<typename P_numtype2>
T_pick& operator=(const VectorPick<P_numtype2> &);
template<typename P_numtype2>
T_pick& operator+=(const VectorPick<P_numtype2> &);
template<typename P_numtype2>
T_pick& operator-=(const VectorPick<P_numtype2> &);
template<typename P_numtype2>
T_pick& operator*=(const VectorPick<P_numtype2> &);
template<typename P_numtype2>
T_pick& operator/=(const VectorPick<P_numtype2> &);
template<typename P_numtype2>
T_pick& operator%=(const VectorPick<P_numtype2> &);
template<typename P_numtype2>
T_pick& operator^=(const VectorPick<P_numtype2> &);
template<typename P_numtype2>
T_pick& operator&=(const VectorPick<P_numtype2> &);
template<typename P_numtype2>
T_pick& operator|=(const VectorPick<P_numtype2> &);
template<typename P_numtype2>
T_pick& operator>>=(const VectorPick<P_numtype2> &);
template<typename P_numtype2>
T_pick& operator<<=(const VectorPick<P_numtype2> &);
// Random operand
template<typename P_distribution>
T_pick& operator=(Random<P_distribution>& random);
template<typename P_distribution>
T_pick& operator+=(Random<P_distribution>& random);
template<typename P_distribution>
T_pick& operator-=(Random<P_distribution>& random);
template<typename P_distribution>
T_pick& operator*=(Random<P_distribution>& random);
template<typename P_distribution>
T_pick& operator/=(Random<P_distribution>& random);
template<typename P_distribution>
T_pick& operator%=(Random<P_distribution>& random);
template<typename P_distribution>
T_pick& operator^=(Random<P_distribution>& random);
template<typename P_distribution>
T_pick& operator&=(Random<P_distribution>& random);
template<typename P_distribution>
T_pick& operator|=(Random<P_distribution>& random);
private:
VectorPick() { }
template<typename P_expr, typename P_updater>
inline void _bz_assign(P_expr, P_updater);
private:
T_vector vector_;
T_indexVector index_;
};
BZ_NAMESPACE_END
#include <blitz/vecpick.cc>
#include <blitz/vecpickio.cc>
#include <blitz/vecpickiter.h>
#endif // BZ_VECPICK_H
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