1 files changed, 77 insertions, 0 deletions
diff --git a/nihil.ucl/boolean.cc b/nihil.ucl/boolean.cc
new file mode 100644
index 0000000..95b4e2f
--- /dev/null
+++ b/nihil.ucl/boolean.cc
@@ -0,0 +1,77 @@
+/*
+ * This source code is released into the public domain.
+ */
+
+module;
+
+#include <compare>
+#include <cstdlib>
+
+#include <ucl.h>
+
+module nihil.ucl;
+
+namespace nihil::ucl {
+
+boolean::boolean() : boolean(false)
+{
+}
+
+boolean::boolean(ref_t, ::ucl_object_t const *uobj)
+	: object(nihil::ucl::ref, uobj)
+{
+	if (type() != ucl_type)
+		throw type_mismatch(ucl_type, type());
+}
+
+boolean::boolean(noref_t, ::ucl_object_t *uobj)
+	: object(noref, uobj)
+{
+	if (type() != ucl_type)
+		throw type_mismatch(ucl_type, type());
+}
+
+boolean::boolean(contained_type value)
+	: object(noref, ::ucl_object_frombool(value))
+{
+	if (_object == nullptr)
+		throw error("failed to create UCL object");
+}
+
+auto boolean::value(this boolean const &self)
+-> contained_type
+{
+	auto v = contained_type{};
+	auto const *uobj = self.get_ucl_object();
+
+	if (::ucl_object_toboolean_safe(uobj, &v))
+		return v;
+
+	std::abort();
+}
+
+auto operator== (boolean const &a, boolean const &b)
+-> bool
+{
+	return a.value() == b.value();
+}
+
+auto operator<=> (boolean const &a, boolean const &b)
+-> std::strong_ordering
+{
+	return a.value() <=> b.value();
+}
+
+auto operator== (boolean const &a, boolean::contained_type b)
+-> bool
+{
+	return a.value() == b;
+}
+
+auto operator<=> (boolean const &a, boolean::contained_type b)
+-> std::strong_ordering
+{
+	return a.value() <=> b;
+}
+
+} // namespace nihil::ucl