根据可用的API和Apple Documentation Process.run
方法,可能会引发异常。我想处理潜在的异常,但是找不到有关这些异常的任何文档。
如何找到相关文档并处理Process.run
异常?
示例代码:
func runProcess(process: Process) {
do {
try process.run()
} catch ??? {
// I don't know what exceptions can I catch here
} catch {
// If I use catch-all case, then the `error` object contains only
// `localizedDescription` which doesn't help in handling errors either
}
}
它实际上是从桥接的[NSTask - (BOOL)launchAndReturnError:(out NSError **_Nullable)error]
,因此抛出的异常是NSError,因此您可以从
func runProcess(process: Process) {
do {
try process.run()
} catch let error as NSError {
// process NSError.code (domain, etc)
} catch {
// do anything else
}
}
如果感兴趣的是特定代码,则可以通过处理CocoaError
(那里有很多声明的常量)
/// Describes errors within the Cocoa error domain. public struct CocoaError {
do {
try process.run()
} catch CocoaError.fileNoSuchFile {
print("Error: no such file exists")
}
以下是相关文档:
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