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a2ae2149e8
Extend TypeDecoder with support for inverse requirements, passing them along to the type builder. Then implement support for inverse requirements within the AST demangler, which addresses the round-trip demangling failures we've been seeing. The runtime and remote inspection facilities still need metadata to deal with inverse requirements. Fixes rdar://124564447.
78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
//===--- KnownProtocols.h - Working with compiler protocols -----*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_AST_KNOWNPROTOCOLS_H
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#define SWIFT_AST_KNOWNPROTOCOLS_H
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#include "swift/Basic/InlineBitfield.h"
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#include "swift/Basic/FixedBitSet.h"
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#include "swift/AST/InvertibleProtocolKind.h"
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#include "swift/Config.h"
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namespace llvm {
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class StringRef;
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}
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namespace swift {
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/// The set of known protocols.
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enum class KnownProtocolKind : uint8_t {
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#define PROTOCOL_WITH_NAME(Id, Name) Id,
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#include "swift/AST/KnownProtocols.def"
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};
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enum : uint8_t {
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// This uses a preprocessor trick to count all the protocols. The enum value
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// expression below expands to "+1+1+1...". (Note that the first plus
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// is parsed as a unary operator.)
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#define PROTOCOL_WITH_NAME(Id, Name) +1
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/// The number of known protocols.
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NumKnownProtocols =
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#include "swift/AST/KnownProtocols.def"
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};
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enum : unsigned { NumKnownProtocolKindBits =
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countBitsUsed(static_cast<unsigned>(NumKnownProtocols - 1)) };
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/// Retrieve the name of the given known protocol.
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llvm::StringRef getProtocolName(KnownProtocolKind kind);
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/// MARK: Invertible protocols
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///
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/// The invertible protocols are a subset of the known protocols.
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enum : uint8_t {
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// Use preprocessor trick to count all the invertible protocols.
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#define INVERTIBLE_PROTOCOL_WITH_NAME(Id, Name) +1
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/// The number of invertible protocols.
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NumInvertibleProtocols =
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#include "swift/AST/KnownProtocols.def"
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};
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using InvertibleProtocolSet = FixedBitSet<NumInvertibleProtocols,
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InvertibleProtocolKind>;
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/// Maps a KnownProtocol to the set of InvertibleProtocols, if a mapping exists.
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/// \returns None if the known protocol is not invertible.
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std::optional<InvertibleProtocolKind>
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getInvertibleProtocolKind(KnownProtocolKind kp);
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/// Returns the KnownProtocolKind corresponding to an InvertibleProtocolKind.
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KnownProtocolKind getKnownProtocolKind(InvertibleProtocolKind ip);
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void simple_display(llvm::raw_ostream &out,
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const InvertibleProtocolKind &value);
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} // end namespace swift
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#endif
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