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-rw-r--r--widget/cocoa/nsCocoaFeatures.h57
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diff --git a/widget/cocoa/nsCocoaFeatures.h b/widget/cocoa/nsCocoaFeatures.h
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+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsCocoaFeatures_h_
+#define nsCocoaFeatures_h_
+
+#include <stdint.h>
+
+/// Note that this class assumes we support the platform we are running on.
+/// For better or worse, if the version is unknown or less than what we
+/// support, we set it to the minimum supported version. GetSystemVersion
+/// is the only call that returns the unadjusted values.
+class nsCocoaFeatures {
+ public:
+ static int32_t macOSVersion();
+ static int32_t macOSVersionMajor();
+ static int32_t macOSVersionMinor();
+ static int32_t macOSVersionBugFix();
+ static bool OnSierraExactly();
+ static bool OnHighSierraOrLater();
+ static bool OnMojaveOrLater();
+ static bool OnCatalinaOrLater();
+ static bool OnBigSurOrLater();
+ static bool OnMontereyOrLater();
+ static bool OnVenturaOrLater();
+
+ static bool IsAtLeastVersion(int32_t aMajor, int32_t aMinor,
+ int32_t aBugFix = 0);
+
+ static bool ProcessIsRosettaTranslated();
+
+ // These are utilities that do not change or depend on the value of
+ // mOSVersion and instead just encapsulate the encoding algorithm. Note that
+ // GetVersion actually adjusts to the lowest supported OS, so it will always
+ // return a "supported" version. GetSystemVersion does not make any
+ // modifications.
+ static void GetSystemVersion(int& aMajor, int& aMinor, int& aBugFix);
+ static int32_t GetVersion(int32_t aMajor, int32_t aMinor, int32_t aBugFix);
+ static int32_t ExtractMajorVersion(int32_t aVersion);
+ static int32_t ExtractMinorVersion(int32_t aVersion);
+ static int32_t ExtractBugFixVersion(int32_t aVersion);
+
+ private:
+ nsCocoaFeatures() = delete; // Prevent instantiation.
+ static void InitializeVersionNumbers();
+
+ static int32_t mOSVersion;
+};
+
+// C-callable helper for cairo-quartz-font.c and SkFontHost_mac.cpp
+extern "C" {
+bool Gecko_OnSierraExactly();
+}
+
+#endif // nsCocoaFeatures_h_