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/*****
* array.h
* Tom Prince 2005/06/18
*
* Array type used by virtual machine.
*****/
#ifndef ARRAY_H
#define ARRAY_H
#include "vm.h"
#include "memory.h"
#include "item.h"
namespace vm {
// Arrays are vectors with push and pop functions.
class array : public mem::deque<item>, public gc {
bool cycle;
public:
array(size_t n)
: mem::deque<item>(n), cycle(false)
{}
void push(item i)
{
push_back(i);
}
item pop()
{
item i=back();
pop_back();
return i;
}
template <typename T>
T read(size_t i)
{
return get<T>((*this)[i]);
}
void cyclic(bool b) {
cycle=b;
}
bool cyclic() {
return cycle;
}
};
template <typename T>
inline T read(array *a, size_t i)
{
return a->array::read<T>(i);
}
template <typename T>
inline T read(array &a, size_t i)
{
return a.array::read<T>(i);
}
inline size_t checkArray(vm::array *a)
{
if(a == 0) vm::error("dereference of null array");
return a->size();
}
extern const char *arraymismatch;
inline size_t checkArrays(vm::array *a, vm::array *b)
{
size_t asize=checkArray(a);
if(asize != checkArray(b))
vm::error(arraymismatch);
return asize;
}
} // namespace vm
#endif // ARRAY_H
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