#include <pslang/interpreter/value.hpp>

#include <iomanip>

namespace pslang::interpreter
{

	namespace
	{

		template <typename T>
		type::type type_of_impl(primitive_value_base<T> const &)
		{
			return type::primitive_type(type::primitive_type_base<T>{});
		}

		type::type type_of_impl(primitive_value const & value)
		{
			return std::visit([](auto const & value){ return type_of_impl(value); }, value);
		}

		type::type type_of_impl(value const & value)
		{
			return std::visit([](auto const & value){ return type_of_impl(value); }, value);
		}

		template <typename T>
		void print_impl(std::ostream & out, primitive_value_base<T> const & value)
		{
			if constexpr (std::is_same_v<T, bool>)
			{
				out << (value.value ? "true" : "false");
			}
			else if constexpr (std::is_integral_v<T> && std::is_signed_v<T>)
			{
				out << (std::int64_t)value.value;
			}
			else if constexpr (std::is_integral_v<T> && std::is_unsigned_v<T>)
			{
				out << (std::uint64_t)value.value;
			}
			else if constexpr (std::is_same_v<T, float>)
			{
				out << std::setprecision(7) << value.value;
			}
			else if constexpr (std::is_same_v<T, double>)
			{
				out << std::setprecision(15) << value.value;
			}
			else
			{
				out << "(unknown)";
			}
		}

		void print_impl(std::ostream & out, primitive_value const & value)
		{
			std::visit([&](auto const & value){ return print_impl(out, value); }, value);
		}

		void print_impl(std::ostream & out, value const & value)
		{
			std::visit([&](auto const & value){ return print_impl(out, value); }, value);
		}

	}

	type::type type_of(value const & value)
	{
		return type_of_impl(value);
	}

	void print(std::ostream & out, value const & value)
	{
		print_impl(out, value);
	}

}