1 files changed, 139 insertions, 0 deletions
diff --git a/nihil.ucl/string.cc b/nihil.ucl/string.cc
new file mode 100644
index 0000000..d2f4618
--- /dev/null
+++ b/nihil.ucl/string.cc
@@ -0,0 +1,139 @@
+/*
+ * This source code is released into the public domain.
+ */
+
+module;
+
+#include <cstdlib>
+#include <string>
+
+#include <ucl.h>
+
+module nihil.ucl;
+
+namespace nihil::ucl {
+
+string::string(ref_t, ::ucl_object_t const *uobj)
+	: object(nihil::ucl::ref, uobj)
+{
+	if (type() != ucl_type)
+		throw type_mismatch(ucl_type, type());
+}
+
+string::string(noref_t, ::ucl_object_t *uobj)
+	: object(noref, uobj)
+{
+	if (type() != ucl_type)
+		throw type_mismatch(ucl_type, type());
+}
+
+string::string()
+	: string(std::string_view(""))
+{}
+
+string::string(std::string_view value)
+	: object(nihil::ucl::ref, 
+		 ::ucl_object_fromstring_common(
+			value.data(), value.size(),
+			UCL_STRING_RAW))
+{
+	if (_object == nullptr)
+		throw error("failed to create UCL object");
+}
+
+auto string::value(this string const &self) -> contained_type
+{
+	char const *dptr{};
+	std::size_t dlen;
+
+	auto const *uobj = self.get_ucl_object();
+	if (::ucl_object_tolstring_safe(uobj, &dptr, &dlen))
+		return {dptr, dlen};
+
+	// This should never fail.
+	std::abort();
+}
+
+auto string::size(this string const &self) -> size_type
+{
+	return self.value().size();
+}
+
+auto string::empty(this string const &self) -> bool
+{
+	return self.size() == 0;
+}
+
+auto string::data(this string const &self) -> pointer
+{
+	char const *dptr{};
+
+	auto const *uobj = self.get_ucl_object();
+	if (::ucl_object_tostring_safe(uobj, &dptr))
+		return dptr;
+
+	// This should never fail.
+	std::abort();
+}
+
+auto string::begin(this string const &self) -> iterator
+{
+	return self.data();
+}
+
+auto string::end(this string const &self) -> iterator
+{
+	return self.data() + self.size();
+}
+
+auto operator== (string const &a, string const &b)
+	-> bool
+{
+	return a.value() == b.value();
+}
+
+auto operator<=> (string const &a, string const &b)
+	-> std::strong_ordering
+{
+	return a.value() <=> b.value();
+}
+
+/*
+ * For convenience, allow comparison with C++ strings without having to
+ * construct a temporary UCL object.
+ */
+
+auto operator==(string const &lhs, std::string_view rhs) -> bool
+{
+	return lhs.value() == rhs;
+}
+
+auto operator<=>(string const &lhs, std::string_view rhs)
+	-> std::strong_ordering
+{
+	return lhs.value() <=> rhs;
+}
+
+auto operator==(string const &lhs, std::string const &rhs) -> bool
+{
+	return lhs == std::string_view(rhs);
+}
+
+auto operator<=>(string const &lhs, std::string const &rhs)
+	-> std::strong_ordering
+{
+	return lhs <=> std::string_view(rhs);
+}
+
+auto operator==(string const &lhs, char const *rhs) -> bool
+{
+	return lhs == std::string_view(rhs);
+}
+
+auto operator<=>(string const &lhs, char const *rhs)
+	-> std::strong_ordering
+{
+	return lhs <=> std::string_view(rhs);
+}
+
+} // namespace nihil::ucl