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124 lines
3.7 KiB
Plaintext
124 lines
3.7 KiB
Plaintext
//===--- SwiftNativeNSXXXBase.mm.gyb - Cocoa classes with fast refcounts --===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// Classes derived from ObjC bases but that use native swift reference
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// counting, layout, and allocation.
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//
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// These classes declare a native Swift object header and override the
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// NSObject methods that do reference counting to use it accordingly.
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// We can only do this trick with objc classes that are known not to
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// use the storage where Swift places its native object header. This
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// takes care of how the classes are handled from Objective-C code.
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// _NSSwiftArrayBase, _NSSwiftDictionaryBase, _NSSwiftSetBase
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// _NSSwiftSetBase, _NSSwiftStringBase
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//
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// To trick Swift into using its fast refcounting and allocation
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// directly (rather than going through objc_msgSend to arrive at the
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// implementations defined here), we define subclasses on the Swift
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// side but we establish the inheritance relationship with
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// the special @_swift_native_objc_runtime_base attribute rather
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// than directly subclassing the classes defined here.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/Runtime/Config.h"
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#if SWIFT_OBJC_INTEROP
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#import <Foundation/Foundation.h>
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#import <CoreFoundation/CoreFoundation.h>
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#include <objc/NSObject.h>
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#include <objc/runtime.h>
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#include <objc/objc.h>
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#include "swift/Runtime/HeapObject.h"
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#include "swift/Runtime/Metadata.h"
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#include "swift/Runtime/ObjCBridge.h"
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#include "llvm/ADT/DenseMap.h"
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#include <stdio.h>
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#include <stdlib.h>
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using namespace swift;
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// NOTE: older runtimes called these _SwiftNativeNSXXXBase. The two must
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// coexist, so these were renamed. The old names must not be used in the new
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// runtime.
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% for Class in ('Array', 'MutableArray', 'Dictionary', 'Set', 'String', 'Enumerator'):
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SWIFT_RUNTIME_STDLIB_API
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@interface __SwiftNativeNS${Class}Base : NSObject
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{
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@private
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SWIFT_HEAPOBJECT_NON_OBJC_MEMBERS;
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}
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@end
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@implementation __SwiftNativeNS${Class}Base
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- (instancetype)initWithCoder: (NSCoder *)coder {
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return [super init];
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}
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+ (BOOL)automaticallyNotifiesObserversForKey:(NSString *)key {
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return NO;
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}
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wobjc-missing-super-calls"
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STANDARD_OBJC_METHOD_IMPLS_FOR_SWIFT_OBJECTS
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#pragma clang diagnostic pop
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@end
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% end
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SWIFT_CC(swift) SWIFT_RUNTIME_STDLIB_SPI
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bool
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swift_stdlib_NSObject_isEqual(id lhs,
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id rhs) {
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return (lhs == rhs) || [lhs isEqual:rhs];
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}
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SWIFT_CC(swift) SWIFT_RUNTIME_STDLIB_SPI
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bool
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swift_stdlib_connectNSBaseClasses() {
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% for Class in ('Array', 'MutableArray', 'Dictionary', 'Set', 'String', 'Enumerator'):
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Class NS${Class}Super = objc_lookUpClass("NS${Class}");
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if (!NS${Class}Super) return false;
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Class NS${Class}OurClass = objc_lookUpClass("__SwiftNativeNS${Class}Base");
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if (!NS${Class}OurClass) return false;
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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class_setSuperclass(NS${Class}OurClass, NS${Class}Super);
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#pragma clang diagnostic pop
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% end
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return true;
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}
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@interface __SwiftNativeNSArrayBase (Compatibility)
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+ (id) new;
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@end
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@implementation __SwiftNativeNSArrayBase (Compatibility)
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+ (id) new {
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// Some apps accidentally do [[[aSwiftArray class] new] mutableCopy]
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return [objc_lookUpClass("NSArray") new];
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}
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@end
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#endif
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// ${'Local Variables'}:
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// eval: (read-only-mode 1)
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// End:
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