dropn Class Reference

#include <rpnfunc.h>

Inheritance diagram for dropn:

Collaboration diagram for dropn:

List of all members.

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

---

Detailed Description

Definition at line 322 of file rpnfunc.h.

---

Constructor & Destructor Documentation

dropn::dropn

(

)

[inline]

Definition at line 326 of file rpnfunc.h.

Referenced by copy().

{}

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

Definition at line 684 of file rpnfunc.cpp.

References eval().

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

dropn::~dropn

(

)

[inline]

Definition at line 328 of file rpnfunc.h.

{}

---

Member Function Documentation

rpnbase * dropn::copy

(

)

const [virtual]

Reimplemented from rpnfunction.

Definition at line 692 of file rpnfunc.cpp.

References dropn().

{
  return new dropn();
}

void dropn::eval

(

deque< rpnbase * > &

ds

)

[virtual]

Reimplemented from rpnfunction.

Definition at line 697 of file rpnfunc.cpp.

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

Referenced by dropn().

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

  dec();
}

string const dropn::name

(

)

const [inline, virtual]

Reimplemented from rpnfunction.

Definition at line 333 of file rpnfunc.h.

{ return string("dropn"); }

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

Reimplemented from rpnfunction.

Definition at line 705 of file rpnfunc.cpp.

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

{
  if (n.num<0)
    return;

  unsigned int val = n.num;
  if (ds.size()>val)
  {
    rpnbase* x0 = ds.front();
    ds.pop_front();

    ds.erase(ds.begin(),ds.begin()+val);
    x0->dec();
  } 
}

---

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

• rpn/rpnfunc.h
• rpn/rpnfunc.cpp