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stack.hpp
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C/C++ Source or Header
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1996-01-24
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740b
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39 lines
#ifndef __STACK_HPP_
#define __STACK_HPP_
#ifndef NO_LIBS
#include "jmalloc.hpp"
#else
#include "fakelib.hpp"
#endif
#include <stdio.h>
struct cons_cell;
template<class T> class grow_stack // stack does not shrink
{
public :
T **sdata;
long son;
grow_stack(int max_size) { sdata=(T **)jmalloc(max_size,"pointer stack"); son=0; }
void push(T *data)
{
sdata[son]=data;
son++;
}
T *pop(long total)
{ if (total>son) { lbreak("stack underflow\n"); exit(0); }
son-=total;
return sdata[son];
}
void clean_up()
{
if (son!=0) fprintf(stderr,"Warning cleaning up stack and not empty\n");
jfree(sdata);
sdata=NULL; son=0;
}
} ;
#endif