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65 lines
1.6 KiB
C

#ifndef OBJC_SELECTOR_H_INCLUDED
#define OBJC_SELECTOR_H_INCLUDED
/**
* Structure used to store the types for a selector. This allows for a quick
* test to see whether a selector is polymorphic and allows enumeration of all
* type encodings for a given selector.
*
* This is the same size as an objc_selector, so we can allocate them from the
* objc_selector pool.
*
* Note: For ABI v10, we can probably do something a bit more sensible here and
* make selectors into a linked list.
*/
struct sel_type_list
{
const char *value;
struct sel_type_list *next;
};
/**
* Structure used to store selectors in the list.
*/
struct objc_selector
{
union
{
/**
* The name of this selector. Used for unregistered selectors.
*/
const char *name;
/**
* The index of this selector in the selector table. When a selector
* is registered with the runtime, its name is replaced by an index
* uniquely identifying this selector. The index is used for dispatch.
*/
uintptr_t index;
};
/**
* The Objective-C type encoding of the message identified by this selector.
*/
const char * types;
};
/**
* Returns the untyped variant of a selector.
*/
__attribute__((unused))
static uint32_t get_untyped_idx(SEL aSel)
{
SEL untyped = sel_registerTypedName_np(sel_getName(aSel), 0);
return (uint32_t)(uintptr_t)untyped->name;
}
/**
* Returns whether a selector is mapped.
*/
BOOL sel_is_mapped(SEL selector);
/**
* Registers the selector. This selector may be returned later, so it must not
* be freed.
*/
SEL objc_register_selector(SEL aSel);
#endif // OBJC_SELECTOR_H_INCLUDED