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This allows `std::string` to be constructed implicitly from a String literal, which is convenient e.g. when calling C++ APIs that take `std::string` as a parameter.
34 lines
952 B
Swift
34 lines
952 B
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) 2014 - 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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extension std.string {
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public init(_ string: String) {
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self.init()
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for char in string.utf8 {
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self.push_back(value_type(char))
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}
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}
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}
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extension std.string: ExpressibleByStringLiteral {
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public init(stringLiteral value: String) {
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self.init(value)
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}
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}
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extension String {
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public init(cxxString: std.string) {
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self.init(cString: cxxString.__c_strUnsafe())
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withExtendedLifetime(cxxString) {}
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}
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}
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