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add std.zig.system.windows version check utility functions

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Rohlem 2020-12-17 15:55:05 +01:00 committed by Andrew Kelley
parent 2922a48309
commit 4b280ac7e9
1 changed files with 16 additions and 0 deletions
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16
lib/std/zig/system/windows.zig
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@ -43,3 +43,19 @@ pub fn detectRuntimeVersion() WindowsVersion {
return @intToEnum(WindowsVersion, version);
}
/// Returns whether the target os versions are uniformly at least as new as the argument:
/// true/false if this holds for the entire target range, null if it only holds for some.
pub fn targetVersionIsAtLeast(requested_version: WindowsVersion) ?bool {
const requested = @enumToInt(requested_version);
const version_range = std.builtin.os.version_range.windows;
const target_min = @enumToInt(version_range.min);
const target_max = @enumToInt(version_range.max);
return if (target_max < requested) false else if (target_min >= requested) true else null;
}
/// Returns whether the runtime os version is at least as new as the argument.
pub fn runtimeVersionIsAtLeast(requested_version: WindowsVersion) bool {
return targetVersionIsAtLeast(requested_version) orelse
(@enumToInt(detectRuntimeVersion()) >= @enumToInt(requested_version));
}