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// Protocol Buffers - Google's data interchange format
// Copyright 2024 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
/// Swift specific additions to simplify usage.
extension GPBUnknownFields {
/// Fetches the first varint for the given field number.
public func firstVarint(_ fieldNumber: Int32) -> UInt64? {
var value: UInt64 = 0
guard getFirst(fieldNumber, varint: &value) else { return nil }
return value
}
/// Fetches the first fixed32 for the given field number.
public func firstFixed32(_ fieldNumber: Int32) -> UInt32? {
var value: UInt32 = 0
guard getFirst(fieldNumber, fixed32: &value) else { return nil }
return value
}
/// Fetches the first fixed64 for the given field number.
public func firstFixed64(_ fieldNumber: Int32) -> UInt64? {
var value: UInt64 = 0
guard getFirst(fieldNumber, fixed64: &value) else { return nil }
return value
}
}
/// Map the `NSFastEnumeration` support to a Swift `Sequence`.
extension GPBUnknownFields: Sequence {
public typealias Element = GPBUnknownField
public struct Iterator: IteratorProtocol {
var iter: NSFastEnumerationIterator
init(_ fields: NSFastEnumeration) {
self.iter = NSFastEnumerationIterator(fields)
}
public mutating func next() -> GPBUnknownField? {
return iter.next() as? GPBUnknownField
}
}
public func makeIterator() -> Iterator {
return Iterator(self)
}
}
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