50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
#pragma once
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/// \file value.h
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/// \author Folling <folling@ikarus.world>
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#include <ikarus/macros.h>
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/// \defgroup values Values
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/// \brief The values of properties.
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/// \details Each entity has a value for each property it is associated with.
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/// These value classes represent plain objects. They are not associated with any entity.
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/// Each value may be undefined. \see IkarusProperty
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/// Values are stored as lists. If a property is "singular" then its value is a list of size 1.
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/// Values are typed, with types existing for each of the corresponding property types.
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/// When setting values for a property the type must match the property type and the value must be valid under the property's
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/// settings. \see PropertyType
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/// @{
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IKARUS_BEGIN_HEADER
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/// \brief The common type for all values.
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struct IkarusValue;
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/// \brief Visits an entity value, calling the appropriate function for the value's type.
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/// \param value The entity value to visit.
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/// \pre \li Must not be null.
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/// \param toggle_visitor The function to call if the value is a toggle value. Skipped if null.
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/// \param number_visitor The function to call if the value is a number value. Skipped if null.
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/// \param text_visitor The function to call if the value is a text value. Skipped if null.
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/// \param data The data passed to the visitor functions.
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IKA_API void ikarus_value_visit(
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IkarusValue * value,
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void (*toggle_visitor)(struct IkarusToggleValue *, void *),
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void (*number_visitor)(struct IkarusNumberValue *, void *),
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void (*text_visitor)(struct IkarusTextValue *, void *),
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void * data
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);
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/// \see ikarus_value_visit
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IKA_API void ikarus_value_visit_const(
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IkarusValue const * value,
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void (*toggle_visitor)(struct IkarusToggleValue const *, void *),
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void (*number_visitor)(struct IkarusNumberValue const *, void *),
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void (*text_visitor)(struct IkarusTextValue const *, void *),
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void * data
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);
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IKARUS_END_HEADER
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/// @}
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