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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
// This file contains non-API (or underscored) declarations that are needed to
// be kept around for ABI compatibility
extension Unicode.UTF16 {
@available(*, unavailable, renamed: "Unicode.UTF16.isASCII")
@inlinable
public static func _isASCII(_ x: CodeUnit) -> Bool {
return Unicode.UTF16.isASCII(x)
}
}
@available(*, unavailable, renamed: "Unicode.UTF8.isASCII")
@inlinable
internal func _isASCII(_ x: UInt8) -> Bool {
return Unicode.UTF8.isASCII(x)
}
@available(*, unavailable, renamed: "Unicode.UTF8.isContinuation")
@inlinable
internal func _isContinuation(_ x: UInt8) -> Bool {
return UTF8.isContinuation(x)
}
extension Substring {
@available(*, unavailable, renamed: "Substring.base")
@inlinable
internal var _wholeString: String { return base }
}
extension String {
@available(*, unavailable, renamed: "String.withUTF8")
@inlinable
internal func _withUTF8<R>(
_ body: (UnsafeBufferPointer<UInt8>) throws -> R
) rethrows -> R {
var copy = self
return try copy.withUTF8(body)
}
}
extension Substring {
@available(*, unavailable, renamed: "Substring.withUTF8")
@inlinable
internal func _withUTF8<R>(
_ body: (UnsafeBufferPointer<UInt8>) throws -> R
) rethrows -> R {
var copy = self
return try copy.withUTF8(body)
}
}
// This function is no longer used but must be kept for ABI compatibility
// because references to it may have been inlined.
@usableFromInline
internal func _branchHint(_ actual: Bool, expected: Bool) -> Bool {
// The LLVM intrinsic underlying int_expect_Int1 now requires an immediate
// argument for the expected value so we cannot call it here. This should
// never be called in cases where performance matters, so just return the
// value without any branch hint.
return actual
}
extension String {
@usableFromInline // Never actually used in inlinable code...
internal func _nativeCopyUTF16CodeUnits(
into buffer: UnsafeMutableBufferPointer<UInt16>,
range: Range<String.Index>
) { fatalError() }
}
extension String.UTF16View {
// Swift 5.x: This was accidentally shipped as inlinable, but was never used
// from an inlinable context. The definition is kept around for technical ABI
// compatibility (even though it shouldn't matter), but is unused.
@inlinable @inline(__always)
internal var _shortHeuristic: Int { return 32 }
}
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