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|
// RUN: %empty-directory(%t)
// RUN: %target-run-stdlib-swift %S/Inputs/
// REQUIRES: executable_test
// REQUIRES: objc_interop
// REQUIRES: optimized_stdlib
@_spi(_Unicode)
import Swift
import StdlibUnittest
import StdlibUnicodeUnittest
import Foundation
let StringWordBreaking = TestSuite("StringWordBreaking")
// FIXME: Reenable once we figure out what to do with WordView
// @available(SwiftStdlib 5.7, *)
// extension String._WordView {
// var backwardsCount: Int {
// var c = 0
// var index = endIndex
// while index != startIndex {
// c += 1
// formIndex(before: &index)
// }
// return c
// }
// }
extension String {
@available(SwiftStdlib 5.9, *)
var _words: [String] {
var result: [String] = []
var i = startIndex
while i < endIndex {
let start = i
let end = _wordIndex(after: i)
let substr = self[start ..< end]
result.append(String(substr))
i = end
}
return result
}
@available(SwiftStdlib 5.9, *)
var _wordsBackwards: [String] {
var result: [String] = []
var i = endIndex
while i > startIndex {
let end = i
let start = _wordIndex(before: i)
let substr = self[start ..< end]
result.append(String(substr))
i = start
}
return result
}
}
if #available(SwiftStdlib 5.9, *) {
StringWordBreaking.test("word breaking") {
for wordBreakTest in wordBreakTests {
expectEqual(
wordBreakTest.1,
wordBreakTest.0._words,
"string: \(String(reflecting: wordBreakTest.0))")
expectEqual(
wordBreakTest.1.reversed(),
wordBreakTest.0._wordsBackwards,
"string: \(String(reflecting: wordBreakTest.0))")
}
}
}
// rdar://116652595
//
// We were accidentally hanging when rounding word indices for some concoctions of
// strings. In particular, where we had a pair of scalars create a constraint
// for the preceeding pair, but the preceeding extend rules were not taking the
// constraint into consideration.
if #available(SwiftStdlib 5.10, *) {
StringWordBreaking.test("word breaking backward extend constraints") {
let strs = ["ๆฅ\u{FE0F}:X ", "๐จโ๐จโ๐งโ๐ฆ\u{FE0F}:X ", "โ๏ธ:X ", "โ๏ธยทX ", "โ๏ธ๏ผX "]
let strWords = [
["ๆฅ\u{FE0F}", ":", "X", " "],
["๐จโ๐จโ๐งโ๐ฆ\u{FE0F}", ":", "X", " "],
["โ๏ธ", ":", "X", " "],
["โ๏ธ", "ยท", "X", " "],
["โ๏ธ", "๏ผ", "X", " "]
]
for (str, words) in zip(strs, strWords) {
expectEqual(
words,
str._words,
"string: \(String(reflecting: str))"
)
expectEqual(
words.reversed(),
str._wordsBackwards,
"string: \(String(reflecting: str))"
)
}
}
}
// The most simple subclass of NSString that CoreFoundation does not know
// about.
class NonContiguousNSString : NSString {
required init(coder aDecoder: NSCoder) {
fatalError("don't call this initializer")
}
required init(itemProviderData data: Data, typeIdentifier: String) throws {
fatalError("don't call this initializer")
}
override init() {
_value = []
super.init()
}
init(_ value: [UInt16]) {
_value = value
super.init()
}
@objc(copyWithZone:) override func copy(with zone: NSZone?) -> Any {
// Ensure that copying this string produces a class that CoreFoundation
// does not know about.
return self
}
@objc override var length: Int {
return _value.count
}
@objc override func character(at index: Int) -> unichar {
return _value[index]
}
var _value: [UInt16]
}
extension _StringGuts {
@_silgen_name("$ss11_StringGutsV9isForeignSbvg")
func _isForeign() -> Bool
}
func getUTF16Array(from string: String) -> [UInt16] {
var result: [UInt16] = []
for cp in string.utf16 {
result.append(cp)
}
return result
}
if #available(SwiftStdlib 5.9, *) {
StringWordBreaking.test("word breaking foreign") {
for wordBreakTest in wordBreakTests {
let foreignTest = NonContiguousNSString(
getUTF16Array(from: wordBreakTest.0)
)
let test = foreignTest as String
expectTrue(test._guts._isForeign())
expectEqual(
wordBreakTest.1,
test._words,
"string: \(String(reflecting: wordBreakTest.0))")
expectEqual(
wordBreakTest.1.reversed(),
test._wordsBackwards,
"string: \(String(reflecting: wordBreakTest.0))")
}
}
}
runAllTests()
|
