mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-24 06:16:30 +03:00
67 lines
1.8 KiB
Plaintext
67 lines
1.8 KiB
Plaintext
|
// Copyright 2016 The Chromium 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 "base/mac/objc_release_properties.h"
|
||
|
|
|
||
|
|
#include <memory>
|
||
|
|
|
||
|
|
#include <objc/runtime.h>
|
||
|
|
|
||
|
|
#include "base/logging.h"
|
||
|
|
#include "base/memory/free_deleter.h"
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
bool IsRetained(objc_property_t property) {
|
||
|
|
// The format of the string returned by property_getAttributes is documented
|
||
|
|
// at
|
||
|
|
// http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtPropertyIntrospection.html#//apple_ref/doc/uid/TP40008048-CH101-SW6
|
||
|
|
const char* attribute = property_getAttributes(property);
|
||
|
|
while (attribute[0]) {
|
||
|
|
switch (attribute[0]) {
|
||
|
|
case 'C': // copy
|
||
|
|
case '&': // retain
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
do {
|
||
|
|
attribute++;
|
||
|
|
} while (attribute[0] && attribute[-1] != ',');
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
id ValueOf(id obj, objc_property_t property) {
|
||
|
|
std::unique_ptr<char, base::FreeDeleter> ivar_name(
|
||
|
|
property_copyAttributeValue(property, "V")); // instance variable name
|
||
|
|
if (!ivar_name)
|
||
|
|
return nil;
|
||
|
|
id ivar_value = nil;
|
||
|
|
Ivar ivar = object_getInstanceVariable(obj, &*ivar_name,
|
||
|
|
reinterpret_cast<void**>(&ivar_value));
|
||
|
|
DCHECK(ivar);
|
||
|
|
return ivar_value;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
namespace mac {
|
||
|
|
namespace details {
|
||
|
|
|
||
|
|
void ReleaseProperties(id self, Class cls) {
|
||
|
|
unsigned int property_count;
|
||
|
|
std::unique_ptr<objc_property_t[], base::FreeDeleter> properties(
|
||
|
|
class_copyPropertyList(cls, &property_count));
|
||
|
|
for (size_t i = 0; i < property_count; ++i) {
|
||
|
|
objc_property_t property = properties[i];
|
||
|
|
if (!IsRetained(property))
|
||
|
|
continue;
|
||
|
|
[ValueOf(self, property) release];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace details
|
||
|
|
} // namespace mac
|
||
|
|
} // namespace base
|