//
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// EXTRuntimeExtensions.h
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// extobjc
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//
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// Created by Justin Spahr-Summers on 2011-03-05.
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// Copyright (C) 2012 Justin Spahr-Summers.
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// Released under the MIT license.
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//
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#import <objc/runtime.h>
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/**
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*Describes the memory management policy of a property.
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*/
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typedef enum {
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/**
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*The value is assigned.
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*/
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obs_mtl_propertyMemoryManagementPolicyAssign = 0,
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/**
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*The value is retained.
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*/
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obs_mtl_propertyMemoryManagementPolicyRetain,
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/**
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*The value is copied.
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*/
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obs_mtl_propertyMemoryManagementPolicyCopy
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} obs_mtl_propertyMemoryManagementPolicy;
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/**
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*Describes the attributes and type information of a property.
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*/
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typedef struct {
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/**
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*Whether this property was declared with the \c readonly attribute.
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*/
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BOOL readonly;
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/**
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*Whether this property was declared with the \c nonatomic attribute.
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*/
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BOOL nonatomic;
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/**
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*Whether the property is a weak reference.
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*/
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BOOL weak;
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/**
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*Whether the property is eligible for garbage collection.
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*/
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BOOL canBeCollected;
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/**
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*Whether this property is defined with \c \@dynamic.
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*/
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BOOL dynamic;
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/**
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*The memory management policy for this property. This will always be
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*#obs_mtl_propertyMemoryManagementPolicyAssign if #readonly is \c YES.
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*/
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obs_mtl_propertyMemoryManagementPolicy memoryManagementPolicy;
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/**
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*The selector for the getter of this property. This will reflect any
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*custom \c getter= attribute provided in the property declaration, or the
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*inferred getter name otherwise.
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*/
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SEL getter;
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/**
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*The selector for the setter of this property. This will reflect any
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*custom \c setter= attribute provided in the property declaration, or the
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*inferred setter name otherwise.
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*
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*@note If #readonly is \c YES, this value will represent what the setter
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*\e would be, if the property were writable.
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*/
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SEL setter;
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/**
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*The backing instance variable for this property, or \c NULL if \c
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*\c @synthesize was not used, and therefore no instance variable exists. This
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*would also be the case if the property is implemented dynamically.
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*/
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const char *ivar;
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/**
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*If this property is defined as being an instance of a specific class,
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*this will be the class object representing it.
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*
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*This will be \c nil if the property was defined as type \c id, if the
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*property is not of an object type, or if the class could not be found at
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*runtime.
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*/
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Class objectClass;
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/**
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*The type encoding for the value of this property. This is the type as it
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*would be returned by the \c \@encode() directive.
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*/
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char type[];
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} obs_mtl_propertyAttributes;
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/**
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*Returns a pointer to a structure containing information about \a property.
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*You must \c free() the returned pointer. Returns \c NULL if there is an error
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*obtaining information from \a property.
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*/
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obs_mtl_propertyAttributes *obs_mtl_copyPropertyAttributes (objc_property_t property);
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