Import the Foundation overlay codebase from the Swift repository

Darwin/Config/install-swiftmodules.sh

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+#!/bin/sh
+#===----------------------------------------------------------------------===//
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2020 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+#
+#===----------------------------------------------------------------------===//
+
+set -e
+#set -xv
+
+# This only needs to run during installation, but that includes "installapi".
+[ "$ACTION" = "installapi" -o "$ACTION" = "install" ] || exit 0
+
+[ "$SKIP_INSTALL" != "YES" ] || exit 0
+[ "$SWIFT_INSTALL_MODULES" = "YES" ] || exit 0
+
+srcmodule="${BUILT_PRODUCTS_DIR}/${PRODUCT_NAME}.swiftmodule"
+dstpath="${INSTALL_ROOT}/${INSTALL_PATH}/"
+
+if [ ! -d "$srcmodule" ]; then
+    echo "Cannot find Swift module at $srcmodule" >&2
+    exit 1
+fi
+
+mkdir -p "$dstpath"
+cp -r "$srcmodule" "$dstpath"

Darwin/Config/overlay-base.xcconfig

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+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2020 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+// Configuration settings file format documentation can be found at:
+// https://help.apple.com/xcode/#/dev745c5c974
+
+// Base configuration for Swift overlays.
+
+EXECUTABLE_PREFIX = libswift
+SWIFT_OVERLAY_INSTALL_PATH=/usr/lib/swift
+STRIP_SWIFT_SYMBOLS = NO
+BUILD_LIBRARY_FOR_DISTRIBUTION = YES
+GENERATE_TEXT_BASED_STUBS = YES
+SWIFT_LINK_OBJC_RUNTIME = NO
+CLANG_LINK_OBJC_RUNTIME = NO
+
+// Enable InstallAPI.
+SUPPORTS_TEXT_BASED_API = YES
+
+// We need to run install-swiftmodules.sh during the installapi action.
+INSTALLHDRS_SCRIPT_PHASE = YES
+
+INSTALL_PATH=$(SWIFT_OVERLAY_INSTALL_PATH)
+
+OTHER_SWIFT_FLAGS = -module-link-name $(SWIFT_MODULE_LINK_NAME) -autolink-force-load -runtime-compatibility-version none
+SWIFT_MODULE_LINK_NAME = swift$(PRODUCT_NAME)
+SWIFT_ENABLE_INCREMENTAL_COMPILATION = NO // YES conflicts with -autolink-force-load
+
+// Custom build settings for install-swiftmodules.sh.
+SWIFT_INSTALL_MODULES = YES
+SWIFT_MODULE_INSTALL_PATH = $(INSTALL_PATH)
+
+// We need to generate swiftmodules for these architectures, so that they can be
+// imported in apps that are deployable on OS versions that support them.
+// However, we can only generate module files for these; we can't emit binaries.
+// (All imported definitions will be unavailable on these older OS versions.)
+SWIFT_MODULE_ONLY_IPHONEOS_DEPLOYMENT_TARGET = 10.3
+SWIFT_MODULE_ONLY_ARCHS_iphoneos = armv7 armv7s
+SWIFT_MODULE_ONLY_ARCHS_iphonesimulator = i386
+SWIFT_MODULE_ONLY_ARCHS = $(SWIFT_MODULE_ONLY_ARCHS_$(PLATFORM_NAME))

Darwin/Config/overlay-debug.xcconfig

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+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2020 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+// Configuration settings file format documentation can be found at:
+// https://help.apple.com/xcode/#/dev745c5c974
+
+#include "../Config/overlay-base.xcconfig"
+
+ONLY_ACTIVE_ARCH = YES
+ENABLE_TESTABILITY = YES
+GCC_OPTIMIZATION_LEVEL = 0
+SWIFT_OPTIMIZATION_LEVEL = -Onone
+DEBUG_INFORMATION_FORMAT = dwarf
+SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG
+GCC_PREPROCESSOR_DEFINITIONS = DEBUG=1 $(inherited)

Darwin/Config/overlay-release.xcconfig

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+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2020 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+// Configuration settings file format documentation can be found at:
+// https://help.apple.com/xcode/#/dev745c5c974
+
+#include "../Config/overlay-base.xcconfig"
+
+ONLY_ACTIVE_ARCH = NO
+ENABLE_TESTABILITY = NO
+GCC_OPTIMIZATION_LEVEL = s
+SWIFT_OPTIMIZATION_LEVEL = -O
+DEBUG_INFORMATION_FORMAT = dwarf-with-dsym
+SWIFT_COMPILATION_MODE = wholemodule
+ENABLE_NS_ASSERTIONS = NO

Darwin/Config/overlay-shared.xcconfig

@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2020 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+// Configuration settings file format documentation can be found at:
+// https://help.apple.com/xcode/#/dev745c5c974
+
+SWIFT_IS_OVERLAY = YES
+
+SWIFT_VERSION = 5.0
+SUPPORTED_PLATFORMS = macosx iphoneos iphonesimulator appletvos appletvsimulator watchos watchsimulator
+
+// TAPI needs to be told about the magic-symbols-for-install-name header.
+OTHER_TAPI_FLAGS = $(inherited) -extra-public-header $(SRCROOT)/$(PRODUCT_NAME)-swiftoverlay/magic-symbols-for-install-name.h
+
+// Pass the module link name to C/C++ files; this is needed to generate the
+// magic install name symbols for overlays that existed in Swift 5.0.
+GCC_PREPROCESSOR_DEFINITIONS = SWIFT_TARGET_LIBRARY_NAME=$(SWIFT_MODULE_LINK_NAME)
+
+// We need to generate swiftmodules for these architectures, so that they can be
+// imported in apps that are deployable on OS versions that support them.
+// However, we can only generate module files for these; we can't emit binaries.
+// (All imported definitions will be unavailable on these older OS versions.)
+SWIFT_MODULE_ONLY_IPHONEOS_DEPLOYMENT_TARGET = 10.3
+SWIFT_MODULE_ONLY_ARCHS_iphoneos = armv7 armv7s
+SWIFT_MODULE_ONLY_ARCHS_iphonesimulator = i386
+SWIFT_MODULE_ONLY_ARCHS = $(SWIFT_MODULE_ONLY_ARCHS_$(PLATFORM_NAME))
+
+// Custom settings specific for the Foundation overlay
+OTHER_SWIFT_FLAGS = $(inherited) -Xllvm -sil-inline-generics -Xllvm -sil-partial-specialization
+ALWAYS_SEARCH_USER_PATHS = NO
+CLANG_ENABLE_OBJC_ARC = NO

Darwin/Config/overlay-tests-shared.xcconfig

@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2020 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+// Configuration settings file format documentation can be found at:
+// https://help.apple.com/xcode/#/dev745c5c974
+
+SWIFT_VERSION = 5.0
+
+ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES
+LD_RUNPATH_SEARCH_PATHS = $(inherited) @executable_path/../Frameworks @loader_path/../Frameworks
+
+PRODUCT_NAME = $(TARGET_NAME)
+INFOPLIST_FILE = $(PROJECT_DIR)/$(PRODUCT_NAME)/Info.plist
+
+// Can't emit a swift module interface with bridging headers
+SWIFT_EMIT_MODULE_INTERFACE = NO
+
+CLANG_LINK_OBJC_RUNTIME = YES
+SWIFT_LINK_OBJC_RUNTIME = YES
+CLANG_ENABLE_OBJC_ARC = YES
+
+ALWAYS_SEARCH_USER_PATHS = NO

Darwin/CoreFoundation-swiftoverlay-Tests/CoreFoundationTests.swift

@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2020 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+import XCTest
+import CoreFoundation
+
+class CoreFoundationTests: XCTestCase {
+    // There are no tests dedicated to the CoreFoundation overlay yet.
+}

Darwin/CoreFoundation-swiftoverlay-Tests/CoreFoundationTests.xcconfig

@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2020 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+#include "../Config/overlay-tests-shared.xcconfig"
+
+PRODUCT_BUNDLE_IDENTIFIER = org.swift.CoreFoundationTests

Darwin/CoreFoundation-swiftoverlay-Tests/Info.plist

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+</dict>
+</plist>

Darwin/CoreFoundation-swiftoverlay/CoreFoundation.swift

@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2014 - 2017 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
+//
+//===----------------------------------------------------------------------===//
+
+@_exported import CoreFoundation
+
+public protocol _CFObject: class, Hashable {}
+extension _CFObject {
+  public var hashValue: Int {
+    return Int(bitPattern: CFHash(self))
+  }
+  public func hash(into hasher: inout Hasher) {
+    hasher.combine(self.hashValue)
+  }
+  public static func ==(left: Self, right: Self) -> Bool {
+    return CFEqual(left, right)
+  }
+}

Darwin/CoreFoundation-swiftoverlay/CoreFoundation.xcconfig

@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2020 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+#include "../Config/overlay-shared.xcconfig"
+
+PRODUCT_NAME = CoreFoundation
+OTHER_LDFLAGS = $(inherited) -framework CoreFoundation
+
+// Use 0.0.0 as the version number for development builds.
+CURRENT_PROJECT_VERSION = 0.0.0
+DYLIB_CURRENT_VERSION = $(CURRENT_PROJECT_VERSION)
+MODULE_VERSION = $(CURRENT_PROJECT_VERSION)

Darwin/CoreFoundation-swiftoverlay/magic-symbols-for-install-name.c

@@ -0,0 +1,13 @@
+//===--- magic-symbols-for-install-name.c - Magic linker directive symbols ===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2014 - 2020 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "magic-symbols-for-install-name.h"