factor/vm/tuples.cpp

33 lines
905 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());
}
}