87 lines
1.8 KiB
C++
87 lines
1.8 KiB
C++
/* @file Boolean.cpp
|
|
*
|
|
* author: Roland Conybeare, Aug 2025
|
|
*/
|
|
|
|
#include "Boolean.hpp"
|
|
#include "TaggedPtr.hpp"
|
|
#include "xo/reflect/Reflect.hpp"
|
|
#include <array>
|
|
#include <cassert>
|
|
#include <cstddef>
|
|
|
|
namespace xo {
|
|
using xo::reflect::Reflect;
|
|
using xo::reflect::TaggedPtr;
|
|
|
|
namespace obj {
|
|
gp<Boolean>
|
|
Boolean::boolean_obj(bool x)
|
|
{
|
|
static std::array<gp<Boolean>, 2> s_boolean_v
|
|
= {{ new Boolean{false}, new Boolean{true} }};
|
|
|
|
return s_boolean_v[static_cast<std::size_t>(x)];
|
|
}
|
|
|
|
gp<Boolean>
|
|
Boolean::true_obj()
|
|
{
|
|
return boolean_obj(true);
|
|
}
|
|
|
|
gp<Boolean>
|
|
Boolean::false_obj()
|
|
{
|
|
return boolean_obj(false);
|
|
}
|
|
|
|
TaggedPtr
|
|
Boolean::self_tp() const
|
|
{
|
|
return Reflect::make_tp(const_cast<Boolean*>(this));
|
|
}
|
|
|
|
void
|
|
Boolean::display(std::ostream & os) const
|
|
{
|
|
os << (value_ ? "#t" : "#f");
|
|
}
|
|
|
|
std::size_t
|
|
Boolean::_shallow_size() const
|
|
{
|
|
return sizeof(Boolean);
|
|
}
|
|
|
|
// LCOV_EXCL_START
|
|
Object *
|
|
Boolean::_shallow_copy() const
|
|
{
|
|
|
|
/* Boolean instances not created in GC-owned space,
|
|
* so GC will not traverse them.
|
|
*
|
|
* If we wanted booleans in GC-owned space, would need
|
|
* to pad Boolean::value_ with enough space to hold a forwarding
|
|
* pointer
|
|
*/
|
|
|
|
assert(false);
|
|
return nullptr;
|
|
|
|
}
|
|
// LCOV_EXCL_STOP
|
|
|
|
// LCOV_EXCL_START
|
|
std::size_t
|
|
Boolean::_forward_children()
|
|
{
|
|
assert(false);
|
|
return 0;
|
|
}
|
|
// LCOV_EXCL_STOP
|
|
}
|
|
} /*namespace xo*/
|
|
|
|
/* end Boolean.cpp */
|