-namespace factor
-{
-
-template<typename Type>
-struct data_root : public tagged<Type> {
- factor_vm *parent;
-
- void push()
- {
- parent->data_roots.push_back((cell)this);
- }
-
- explicit data_root(cell value_, factor_vm *parent_)
- : tagged<Type>(value_), parent(parent_)
- {
- push();
- }
-
- explicit data_root(Type *value_, factor_vm *parent_) :
- tagged<Type>(value_), parent(parent_)
- {
- push();
- }
-
- const data_root<Type>& operator=(const Type *x) { tagged<Type>::operator=(x); return *this; }
- const data_root<Type>& operator=(const cell &x) { tagged<Type>::operator=(x); return *this; }
-
- ~data_root()
- {
-#ifdef FACTOR_DEBUG
- assert(parent->data_roots.back() == (cell)this);
-#endif
- parent->data_roots.pop_back();
- }
+namespace factor {
+
+template <typename Type> struct data_root : public tagged<Type> {
+ factor_vm* parent;
+
+ void push() {
+ parent->data_roots.push_back(&this->value_);
+ }
+
+ data_root(cell value, factor_vm* parent)
+ : tagged<Type>(value), parent(parent) {
+ push();
+ }
+
+ data_root(Type* value, factor_vm* parent)
+ : tagged<Type>(value), parent(parent) {
+ FACTOR_ASSERT(value);
+ push();
+ }
+
+ ~data_root() {
+ parent->data_roots.pop_back();
+ }
+
+ friend void swap(data_root<Type>& a, data_root<Type>& b) {
+ cell tmp = a.value_;
+ a.value_ = b.value_;
+ b.value_ = tmp;
+ }
};
-/* A similar hack for the bignum implementation */
-struct gc_bignum {
- bignum **addr;
- factor_vm *parent;
-
- gc_bignum(bignum **addr_, factor_vm *parent_) : addr(addr_), parent(parent_)
- {
- if(*addr_) parent->check_data_pointer(*addr_);
- parent->bignum_roots.push_back((cell)addr);
- }
-
- ~gc_bignum()
- {
-#ifdef FACTOR_DEBUG
- assert(parent->bignum_roots.back() == (cell)addr);
-#endif
- parent->bignum_roots.pop_back();
- }
-};
-
-#define GC_BIGNUM(x) gc_bignum x##__data_root(&x,this)
-
}