split property & values into separate classes and files

Signed-off-by: Folling <mail@folling.io>

include/ikarus/values/text_value.h

@@ -0,0 +1,44 @@
+#pragma once
+
+/// \file text_value.h
+/// \author Folling <folling@ikarus.world>
+
+#include <ikarus/macros.h>
+
+/// \addtogroup entity_value Entity Values
+/// @{
+
+IKARUS_BEGIN_HEADER
+
+/// \brief A true/false boolean-like value. For example "IsDead".
+struct IkarusTextValue;
+
+/// \brief Creates a text value from a boolean.
+/// \param value The text value.
+/// \return The entity value.
+/// \remark Must be freed with #ikarus_free.
+IKA_API IkarusTextValue * ikarus_text_value_create(char const * value);
+
+/// \brief Creates an indeterminate text value.
+/// \return The entity value.
+/// \remark Must be freed with #ikarus_free.
+IKA_API IkarusTextValue * ikarus_text_value_create_indeterminate();
+
+/// \brief Sets the value of a text value.
+/// \param value The text value.
+/// \pre \li Must not be null.
+/// \param new_value The new value.
+IKA_API void ikarus_text_value_set(IkarusTextValue * value, bool new_value);
+
+/// \brief Fetches the underlying value of a text value.
+/// \param value The text value.
+/// \return The underlying value.
+/// \warning If the value is indeterminate, false is returned.
+IKA_API char const * ikarus_text_value_get_underlying(IkarusTextValue const * value);
+
+/// \brief Converts a text value to an entity value.
+/// \param text_value The text value to convert.
+/// \return The converted entity value.
+IKA_API struct IkarusEntityValue * ikarus_text_value_to_entity_value(IkarusTextValue * text_value);
+
+IKARUS_END_HEADER