factor/vm/tuples.cpp

35 lines
886 B
C++

#include "master.hpp"
namespace factor
{
/* push a new tuple on the stack, filling its slots with f */
/* Allocates memory */
void factor_vm::primitive_tuple()
{
data_root<tuple_layout> layout(ctx->pop(),this);
tagged<tuple> t(allot<tuple>(tuple_size(layout.untagged())));
t->layout = layout.value();
memset_cell(t->data(),false_object,tuple_size(layout.untagged()) - sizeof(cell));
ctx->push(t.value());
}
/* push a new tuple on the stack, filling its slots from the stack */
/* Allocates memory */
void factor_vm::primitive_tuple_boa()
{
data_root<tuple_layout> layout(ctx->pop(),this);
tagged<tuple> t(allot<tuple>(tuple_size(layout.untagged())));
t->layout = layout.value();
cell size = untag_fixnum(layout.untagged()->size) * sizeof(cell);
memcpy(t->data(),(cell *)(ctx->datastack - size + sizeof(cell)),size);
ctx->datastack -= size;
ctx->push(t.value());
}
}