campo-sirio/include/stack.cpp

#include <stack.h>

TStack::TStack(int size) : TArray(size), _sp(0)
{}

void TStack::push(const TObject& o)
{
  add(o, _sp++);
}

void TStack::push(TObject* o)
{
  add(o, _sp++);
}

TObject& TStack::pop()
{
  CHECK(count() > 0, "Stack underflow!");
  return (*this)[--_sp];
}

TObject& TStack::peek(int depth) const
{
  CHECK(depth > _sp, "Stack underflow!");
  return (*this)[_sp-depth-1];
}