WIP/Foundation: port to Windows

Unformalised changes to port Foundation to Windows

Author: compnerd

CMakeLists.txt

@@ -38,7 +38,7 @@ ExternalProject_Add(CoreFoundation
                       -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
                       # NOTE(compnerd) ensure that we build it as a DLL as we
                       # wish to re-export the symbols from Foundation
-                      -DCMAKE_C_FLAGS=-D_USRDLL
+                      -DCMAKE_C_FLAGS=-D_USRDLL -DCURL_STATICLIB
                       -DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}
                       -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
                       -DCMAKE_INSTALL_LIBDIR=usr/lib
@@ -110,6 +110,7 @@ elseif(CMAKE_SYSTEM_NAME STREQUAL FreeBSD)
   set(Foundation_rpath_flags -Xlinker;-rpath;-Xlinker;"\\\$\$ORIGIN")
 elseif(CMAKE_SYSTEM_NAME STREQUAL Windows)
   set(deployment_target -DDEPLOYMENT_TARGET_WINDOWS)
+  set(CoreFoundation_INTERFACE_LIBRARIES -lWS2_32 -lUser32 -lmsvcrt -ladvapi32 -lshell32 -lrpcrt4 -lsecur32 -lPathcch -lOle32 -lCrypt32 -lwldap32 -lNormaliz)
 endif()
 
 add_swift_library(Foundation

Foundation/AffineTransform.swift

@@ -11,6 +11,8 @@
     import Darwin
 #elseif os(Linux) || CYGWIN
     import Glibc
+#elseif os(Windows)
+    import MSVCRT
 #endif
 
 private let ε: CGFloat = CGFloat(2.22045e-16)

Foundation/ByteCountFormatter.swift

@@ -7,6 +7,9 @@
 // See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 //
 
+#if os(Windows)
+import MSVCRT
+#endif
 
 extension ByteCountFormatter {
     public struct Units : OptionSet {

Foundation/CGFloat.swift

@@ -7,6 +7,10 @@
 // See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 //
 
+#if os(Windows)
+import MSVCRT
+#endif
+
 @_fixed_layout
 public struct CGFloat {
 #if arch(i386) || arch(arm)
@@ -863,11 +867,13 @@ public func scalbn(_ x: CGFloat, _ n: Int) -> CGFloat {
     return CGFloat(scalbn(x.native, n))
 }
 
+#if !os(Windows)
 @_transparent
 public func lgamma(_ x: CGFloat) -> (CGFloat, Int) {
     let (value, sign) = lgamma(x.native)
     return (CGFloat(value), sign)
 }
+#endif
 
 @_transparent
 public func remquo(_ x: CGFloat, _ y: CGFloat) -> (CGFloat, Int) {

Foundation/Data.swift

@@ -16,12 +16,19 @@
 import Darwin
 #elseif os(Linux)
 import Glibc
+#elseif os(Windows)
+import MSVCRT
+import WinSDK
 #endif
 
 import CoreFoundation
 
 internal func __NSDataInvokeDeallocatorUnmap(_ mem: UnsafeMutableRawPointer, _ length: Int) {
+#if os(Windows)
+	UnmapViewOfFile(mem)
+#else
     munmap(mem, length)
+#endif
 }
 
 internal func __NSDataInvokeDeallocatorFree(_ mem: UnsafeMutableRawPointer, _ length: Int) {
@@ -187,7 +194,7 @@ public final class _DataStorage {
                 var buffer = UnsafeMutableRawBufferPointer.allocate(byteCount: range.count, alignment: MemoryLayout<UInt>.alignment)
                 defer { buffer.deallocate() }
 
-                let sliceRange = NSRange(location: range.lowerBound - _offset, length: range.count)
+                _ = NSRange(location: range.lowerBound - _offset, length: range.count)
                 var enumerated = 0
                 d.enumerateBytes { (ptr, byteRange, stop) in
                     if byteRange.upperBound - _offset < range.lowerBound {

Foundation/DateFormatter.swift

@@ -14,14 +14,9 @@ open class DateFormatter : Formatter {
     private var __cfObject: CFType?
     private var _cfObject: CFType {
         guard let obj = __cfObject else {
-            #if os(macOS) || os(iOS)
-                let dateStyle = CFDateFormatterStyle(rawValue: CFIndex(self.dateStyle.rawValue))!
-                let timeStyle = CFDateFormatterStyle(rawValue: CFIndex(self.timeStyle.rawValue))!
-            #else
-                let dateStyle = CFDateFormatterStyle(self.dateStyle.rawValue)
-                let timeStyle = CFDateFormatterStyle(self.timeStyle.rawValue)
-            #endif
-            
+            let dateStyle = CFDateFormatterStyle(rawValue: CFIndex(self.dateStyle.rawValue))!
+            let timeStyle = CFDateFormatterStyle(rawValue: CFIndex(self.timeStyle.rawValue))!
+
             let obj = CFDateFormatterCreate(kCFAllocatorSystemDefault, locale._cfObject, dateStyle, timeStyle)!
             _setFormatterAttributes(obj)
             if let dateFormat = _dateFormat {