2802d48b30
The flags were used by the reflect package in the past, but not for a couple of years now. From-SVN: r212446
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/* go-type-eface.c -- hash and equality empty interface functions.
|
|
|
|
Copyright 2010 The Go Authors. All rights reserved.
|
|
Use of this source code is governed by a BSD-style
|
|
license that can be found in the LICENSE file. */
|
|
|
|
#include "runtime.h"
|
|
#include "interface.h"
|
|
#include "go-type.h"
|
|
|
|
/* A hash function for an empty interface. */
|
|
|
|
uintptr_t
|
|
__go_type_hash_empty_interface (const void *vval,
|
|
uintptr_t key_size __attribute__ ((unused)))
|
|
{
|
|
const struct __go_empty_interface *val;
|
|
const struct __go_type_descriptor *descriptor;
|
|
uintptr_t size;
|
|
|
|
val = (const struct __go_empty_interface *) vval;
|
|
descriptor = val->__type_descriptor;
|
|
if (descriptor == NULL)
|
|
return 0;
|
|
size = descriptor->__size;
|
|
if (__go_is_pointer_type (descriptor))
|
|
return descriptor->__hashfn (&val->__object, size);
|
|
else
|
|
return descriptor->__hashfn (val->__object, size);
|
|
}
|
|
|
|
/* An equality function for an empty interface. */
|
|
|
|
_Bool
|
|
__go_type_equal_empty_interface (const void *vv1, const void *vv2,
|
|
uintptr_t key_size __attribute__ ((unused)))
|
|
{
|
|
const struct __go_empty_interface *v1;
|
|
const struct __go_empty_interface *v2;
|
|
const struct __go_type_descriptor* v1_descriptor;
|
|
const struct __go_type_descriptor* v2_descriptor;
|
|
|
|
v1 = (const struct __go_empty_interface *) vv1;
|
|
v2 = (const struct __go_empty_interface *) vv2;
|
|
v1_descriptor = v1->__type_descriptor;
|
|
v2_descriptor = v2->__type_descriptor;
|
|
if (v1_descriptor == NULL || v2_descriptor == NULL)
|
|
return v1_descriptor == v2_descriptor;
|
|
if (!__go_type_descriptors_equal (v1_descriptor, v2_descriptor))
|
|
return 0;
|
|
if (__go_is_pointer_type (v1_descriptor))
|
|
return v1->__object == v2->__object;
|
|
else
|
|
return v1_descriptor->__equalfn (v1->__object, v2->__object,
|
|
v1_descriptor->__size);
|
|
}
|