Files
swift-mirror/stdlib/public/Cxx/std/String.swift
Egor Zhdan d6089c91ed [cxx-interop] Conform std::string to ExpressibleByStringLiteral
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.
2022-07-28 11:07:09 +01:00

34 lines
952 B
Swift

//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2022 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
//
//===----------------------------------------------------------------------===//
extension std.string {
public init(_ string: String) {
self.init()
for char in string.utf8 {
self.push_back(value_type(char))
}
}
}
extension std.string: ExpressibleByStringLiteral {
public init(stringLiteral value: String) {
self.init(value)
}
}
extension String {
public init(cxxString: std.string) {
self.init(cString: cxxString.__c_strUnsafe())
withExtendedLifetime(cxxString) {}
}
}