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4d9edad297
Instead of just checking the number of breaks in each test case, expose and check the actual positions of those breaks, too.
62 lines
1.9 KiB
Swift
62 lines
1.9 KiB
Swift
//===----------------------------------------------------------------------===//
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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) 2022 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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// Normalization tests are currently only available on Darwin, awaiting a sensible
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// file API...
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#if _runtime(_ObjC)
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import Foundation
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public struct GraphemeBreakTest {
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public let string: String
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public let pieces: [[Unicode.Scalar]]
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init?(line: some StringProtocol) {
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// Only look at actual tests
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guard line.hasPrefix("÷") else { return nil }
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let info = line.split(separator: "#")
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let components = info[0].split(separator: " ")
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var string = ""
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var pieces: [[Unicode.Scalar]] = []
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var piece: [Unicode.Scalar] = []
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for component in components {
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switch component {
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case "":
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break
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case "×": // no grapheme break opportunity
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break
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case "÷": // grapheme break opportunity
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guard !piece.isEmpty else { break }
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pieces.append(piece)
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piece = []
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case _: // hexadecimal scalar value
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guard let value = UInt32(component, radix: 16) else { return nil }
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guard let scalar = Unicode.Scalar(value) else { return nil }
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string.unicodeScalars.append(scalar)
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piece.append(scalar)
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}
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}
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if !piece.isEmpty { pieces.append(piece) }
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self.string = string
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self.pieces = pieces
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}
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}
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public let graphemeBreakTests: [GraphemeBreakTest] = {
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let testFile = readInputFile("GraphemeBreakTest.txt")
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return testFile.split(separator: "\n")
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.compactMap { GraphemeBreakTest(line: $0) }
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}()
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#endif
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