rpnpopn Class Reference

#include <rpnfunc.h>

Inheritance diagram for rpnpopn:

Collaboration diagram for rpnpopn:

List of all members.

Public Member Functions
	rpnpopn ()
	rpnpopn (deque< rpnbase * > &ds, bool const evaluate=true)
	~rpnpopn ()
rpnbase *	copy () const
void	visit (deque< rpnbase * > &ds, rpninteger &n)
string const	name () const
void	eval (deque< rpnbase * > &ds)

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Detailed Description

Definition at line 72 of file rpnfunc.h.

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Constructor & Destructor Documentation

rpnpopn::rpnpopn

(

)

[inline]

Definition at line 76 of file rpnfunc.h.

Referenced by copy().

{}

rpnpopn::rpnpopn	(	deque< rpnbase * > &	ds,
		bool const	evaluate = true
	)

Definition at line 187 of file rpnfunc.cpp.

References eval().

{
  if (evaluate)
    eval(ds);
  else
    ds.push_front(this);
}

rpnpopn::~rpnpopn

(

)

[inline]

Definition at line 78 of file rpnfunc.h.

{}

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Member Function Documentation

rpnbase * rpnpopn::copy

(

)

const [virtual]

Reimplemented from rpnfunction.

Definition at line 195 of file rpnfunc.cpp.

References rpnpopn().

{
  return new rpnpopn(); 
}

void rpnpopn::eval

(

deque< rpnbase * > &

ds

)

[virtual]

Reimplemented from rpnfunction.

Definition at line 200 of file rpnfunc.cpp.

References rpnbase::accept(), and rpnbase::dec().

Referenced by rpnpopn().

{
  if (!ds.empty())
    ds[0]->accept(ds,*this);

  dec();
}

string const rpnpopn::name

(

)

const [inline, virtual]

Reimplemented from rpnfunction.

Definition at line 83 of file rpnfunc.h.

{ return string("popn"); }

void rpnpopn::visit	(	deque< rpnbase * > &	ds,
		rpninteger &	n
	)			[virtual]

Reimplemented from rpnfunction.

Definition at line 208 of file rpnfunc.cpp.

References rpnbase::dec(), and rpninteger::num.

{
  if (k.num<0)
    return;

  unsigned int n = (unsigned int)(k.num);

  if (rpnprogramstackstate().ds2.size()<n)
    return;

  rpnbase* x0 = ds.front();
  ds.pop_front();

  if (n==0)
    return;

  for (unsigned int i=0, imax=n; i<imax; ++i)
  {
    ds.push_front( rpnprogramstackstate().ds2.front() );
    rpnprogramstackstate().ds2.pop_front();
  }

  x0->dec();
}

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The documentation for this class was generated from the following files:

• rpn/rpnfunc.h
• rpn/rpnfunc.cpp