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//===--------------- BitcodeElement.swift - LLVM Bitcode Elements --------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
internal enum BitcodeElement {
internal struct Block {
public var id: UInt64
public var elements: [BitcodeElement]
}
/// A record element.
///
/// - Warning: A `Record` element's fields and payload only live as long as
/// the `visit` function that provides them is called. To persist
/// a record, always make a copy of it.
internal struct Record {
internal enum Payload {
case none
case array([UInt64])
case char6String(String)
case blob(ArraySlice<UInt8>)
}
public var id: UInt64
public var fields: UnsafeBufferPointer<UInt64>
public var payload: Payload
}
case block(Block)
case record(Record)
}
extension BitcodeElement.Record.Payload: CustomStringConvertible {
internal var description: String {
switch self {
case .none:
return "none"
case .array(let vals):
return "array(\(vals))"
case .char6String(let s):
return "char6String(\(s))"
case .blob(let s):
return "blob(\(s.count) bytes)"
}
}
}
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