From the Swift documentation:
"If you define an optional variable without providing a default value,
the variable is automatically set to nil for you."
This reverts commit dc0ae675bc. The
change here (presumably the change to Foundation) caused a regression
in several of the bridging-related benchmarks, e.g.,
ObjectiveCBridgeFromNSSetAnyObjectToString, DictionaryBridge,
ObjectiveCBridgeFromNSDictionaryAnyObjectToString.
Remove the functions
_(set|dictionary)Bridge(From|To)ObjectiveC(Conditional) from the
standard library. These entrypoints are no longer used by the compiler
(thanks to generalized collection up/downcasting), so stop using them
in Foundation and in tests.
Use that instead of rolling it up in _SwiftTypePreservingNSNumber so that we
get the right behavior when we go to write plists.
https://bugs.swift.org/browse/SR-2381
The Objective-C type encoding of Boolean values in NSNumber is that of
BOOL, which is either signed char or _Bool depending on the
platform. _SwiftTypePreservingNSNumber was using _Bool, which led to
inconsistencies when bridging vs. creating an NSNumber directly. Use
BOOL consistently.
Fixes rdar://problem/27894308.
`setObject:forKey:` takes a nonnull object, causing us to accidentally pass in a boxed Optional-in-an-Any from the Swift subscript's optional newValue. Fixes rdar://problem/27875914.
SE-0072 took implicit bridging conversions away, which regressed the ability to express NSDictionaries as dictionary literals and index them using literal keys. Address this by changing the signature of init(dictionaryLiteral:) to use Hashable and Any, and by replacing the subscript from Objective-C with one using _Hashable that does the bridging on the user's behalf. This largely restores the QoI of working with NS collections.
This allows String, Array, Dictionary, and Set to be passed as variadic arguments to Cocoa APIs like NSLog, NSPredicate, stringWithFormat:, etc. rdar://problem/27651717
Implements part of SE-0110. Single argument in closures will not be accepted if
there exists explicit type with a number of arguments that's not 1.
```swift
let f: (Int, Int) -> Void = { x in } // this is now an error
```
Note there's a second part of SE-0110 which could be considered additive,
which says one must add an extra pair of parens to specify a single arugment
type that is a tuple:
```swift
let g ((Int, Int)) -> Void = { y in } // y should have type (Int, Int)
```
This patch does not implement that part.
Adds an explicit @escaping throughout the standard library, validation
test suite, and tests. This will be necessary as soon as noescape is
the default for closure parameters.
* Migrate from `UnsafePointer<Void>` to `UnsafeRawPointer`.
As proposed in SE-0107: UnsafeRawPointer.
`void*` imports as `UnsafeMutableRawPointer`.
`const void*` imports as `UnsafeRawPointer`.
Occurrences of `UnsafePointer<Void>` are replaced with UnsafeRawPointer.
* Migrate overlays from UnsafePointer<Void> to UnsafeRawPointer.
This requires explicit memory binding in several places,
particularly in NSData and CoreAudio.
* Fix a bunch of test cases for Void->Raw migration.
* qsort takes IUO values
* Bridge `Unsafe[Mutable]RawPointer as `void [const] *`.
* Parse #dsohandle as UnsafeMutableRawPointer
* Update a bunch of test cases for Void->Raw migration.
* Trivial fix for the SceneKit test case.
* Add an UnsafeRawPointer self initializer.
This is unfortunately necessary for assignment between types imported from C.
* Tiny simplification of the initializer.
* Migrate from `UnsafePointer<Void>` to `UnsafeRawPointer`.
As proposed in SE-0107: UnsafeRawPointer.
`void*` imports as `UnsafeMutableRawPointer`.
`const void*` imports as `UnsafeRawPointer`.
Occurrences of `UnsafePointer<Void>` are replaced with UnsafeRawPointer.
* Migrate overlays from UnsafePointer<Void> to UnsafeRawPointer.
This requires explicit memory binding in several places,
particularly in NSData and CoreAudio.
* Fix a bunch of test cases for Void->Raw migration.
* qsort takes IUO values
* Bridge `Unsafe[Mutable]RawPointer as `void [const] *`.
* Parse #dsohandle as UnsafeMutableRawPointer
* Update a bunch of test cases for Void->Raw migration.
* Trivial fix for the SceneKit test case.
* Add an UnsafeRawPointer self initializer.
This is unfortunately necessary for assignment between types imported from C.
* Tiny simplification of the initializer.
All generic bridgeable types can bridge for all their instantiations now. Removing this ferrets out some now-unnecessary traps that check for unbridgeable parameter types.
Second pass at updates for SE-0086 feedback
<rdar://problem/26892977> Make sure NSOrderedSet keeps its NS
<rdar://problem/26880016> NSBundleResourceRequest should keep its NS
<rdar://problem/26892958> Make sure NSAttributedString keeps its NS
<rdar://problem/26653694> NSCoder.decodeTopLevelObjectForKey does not follow naming guidelines
<rdar://problem/27355801> Foundation should have a structural type for TextCheckingResult
<rdar://problem/26770611> NSExpression naming is a bit awkward in swift
<rdar://problem/26653451> NSCoder encodeDataObject is misleading
<rdar://problem/26653653> NSCoder decodeObjectOfClass is redundant
change includes both the necessary protocol updates and the deprecation
warnings
suitable for migration. A future patch will remove the renamings and
make this
a hard error.
Addresses the following issues:
rdar://problem/25992816 -[NSUserDefaults registerDefaults] is being imported as NSUserDefaults.register(), which is confusing
rdar://problem/26291437 UserDefaults has 'setURL(forKey:)' instead of 'set(_:forKey:)'
rdar://problem/26375229 FileManager overlay has old naming
rdar://problem/26090891 NSBundle methods that are overridden in the apinotes incorrectly handle the first argument pattern
rdar://problem/26271340 struct URL initializer for fileURLWithFileSystemRepresentation is incorrectly named'
rdar://problem/26443640 XMLDTDNode.Kind conflicts with XMLNode.Kind and should be renamed to XMLDTDNode.DTDKind
rdar://problem/26500390 registerUndoWithTarget in overlay not updated for new API names
rdar://problem/26653451 NSCoder encodeDataObject is misleading
rdar://problem/26653653 NSCoder decodeObjectOfClass is redundant
rdar://problem/26653694 NSCoder.decodeTopLevelObjectForKey does not follow naming guidelines
rdar://problem/26656299 SocketNativeHandle should be a hoisted type to SocketPort
https://bugs.swift.org/browse/SR-1903
semantically unambiguous.
We didn't actually intend to change how programmers normally
constructed these types, but the change to the object literal
syntax accidentally caused these initializers to have very
natural-seeming signatures. These initializers also created
possible ambiguities with the actual initializers. Renaming
them to refer to their function as literal initializers is the
right thing to do.
Unfortunately, this provided to be somewhat annoying, as the
code was written to assume that the argument tuple following
e.g. #colorLiteral could be directly passed to the initializer.
We solve this by hacking on both ends of the constraint system:
during generation we form a conversion constraint to the
original, idealized parameter type, and during application we
rewrite the argument tuple type to use the actual labels.
This nicely limits the additional complexity to just the
parts dealing with object literals.
Note that we can't just implicitly rewrite the tuple expression
because that would break invariants tying the labels to physical
source ranges. We also don't want to just change the literal
syntax again and break compatibility with existing uses.
rdar://26148507
