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[gardening] Use defer for end-of-scope calls #902

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Merged
merged 2 commits into from
Mar 10, 2017
Merged

[gardening] Use defer for end-of-scope calls #902

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67bd63f
defer usage where possible
Mar 2, 2017
7b5e6f9
Revert 'defer' for lock()/unlock()
naithar Mar 3, 2017
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4 changes: 2 additions & 2 deletions Foundation/NSKeyedArchiver.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -159,13 +159,13 @@ open class NSKeyedArchiver : NSCoder {
return false
}

defer { CFWriteStreamClose(writeStream) }

let keyedArchiver = NSKeyedArchiver(output: writeStream)

keyedArchiver.encode(rootObject, forKey: NSKeyedArchiveRootObjectKey)
keyedArchiver.finishEncoding()
finishedEncoding = keyedArchiver._flags.contains(ArchiverFlags.finishedEncoding)

CFWriteStreamClose(writeStream)

return finishedEncoding
}
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4 changes: 2 additions & 2 deletions Foundation/NSKeyedUnarchiver.swift
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Expand Up @@ -74,15 +74,15 @@ open class NSKeyedUnarchiver : NSCoder {
return nil
}

defer { CFReadStreamClose(readStream) }

let keyedUnarchiver = NSKeyedUnarchiver(stream: Stream.stream(readStream))
do {
try root = keyedUnarchiver.decodeTopLevelObject(forKey: NSKeyedArchiveRootObjectKey)
keyedUnarchiver.finishDecoding()
} catch {
}

CFReadStreamClose(readStream)

return root
}

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8 changes: 4 additions & 4 deletions Foundation/NSXMLParser.swift
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Expand Up @@ -559,9 +559,12 @@ open class XMLParser : NSObject {
internal func parseFromStream() -> Bool {
var result = true
XMLParser.setCurrentParser(self)
defer { XMLParser.setCurrentParser(nil) }
if let stream = _stream {
stream.open()
defer { stream.close() }
let buffer = malloc(_chunkSize)!.bindMemory(to: UInt8.self, capacity: _chunkSize)
defer { free(buffer) }
var len = stream.read(buffer, maxLength: _chunkSize)
if len != -1 {
while len > 0 {
Expand All @@ -572,10 +575,9 @@ open class XMLParser : NSObject {
} else {
result = false
}
free(buffer)
stream.close()
} else if let data = _data {
let buffer = malloc(_chunkSize)!.bindMemory(to: UInt8.self, capacity: _chunkSize)
defer { free(buffer) }
var range = NSMakeRange(0, min(_chunkSize, data.count))
while result {
let chunk = data.withUnsafeBytes { (buffer: UnsafePointer<UInt8>) -> Data in
Expand All @@ -588,11 +590,9 @@ open class XMLParser : NSObject {
}
range = NSMakeRange(range.location + range.length, min(_chunkSize, data.count - (range.location + range.length)))
}
free(buffer)
} else {
result = false
}
XMLParser.setCurrentParser(nil)
return result
}

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