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//===--- ConformanceDescription.h - Conformance record ----------*- C++ -*-===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 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
//
//===----------------------------------------------------------------------===//
//
// This file defines the ConformanceDescription type, which records a
// conformance which needs to be emitted.
//
//===----------------------------------------------------------------------===//
#ifndef SWIFT_IRGEN_CONFORMANCEDESCRIPTION_H
#define SWIFT_IRGEN_CONFORMANCEDESCRIPTION_H
namespace llvm {
class Constant;
}
namespace swift {
class SILWitnessTable;
namespace irgen {
/// The description of a protocol conformance, including its witness table
/// and any additional information needed to produce the protocol conformance
/// descriptor.
class ConformanceDescription {
public:
/// The conformance itself.
RootProtocolConformance *conformance;
/// The witness table.
SILWitnessTable *wtable;
/// The witness table pattern, which is also a complete witness table
/// when \c requiresSpecialization is \c false.
llvm::Constant *pattern;
/// The size of the witness table.
const uint16_t witnessTableSize;
/// The private size of the witness table, allocated
const uint16_t witnessTablePrivateSize;
/// Whether this witness table requires runtime specialization.
const unsigned requiresSpecialization : 1;
/// The instantiation function, to be run at the end of witness table
/// instantiation.
llvm::Function *instantiationFn = nullptr;
/// The resilient witnesses, if any.
SmallVector<llvm::Constant *, 4> resilientWitnesses;
ConformanceDescription(RootProtocolConformance *conformance,
SILWitnessTable *wtable,
llvm::Constant *pattern,
uint16_t witnessTableSize,
uint16_t witnessTablePrivateSize,
bool requiresSpecialization)
: conformance(conformance), wtable(wtable), pattern(pattern),
witnessTableSize(witnessTableSize),
witnessTablePrivateSize(witnessTablePrivateSize),
requiresSpecialization(requiresSpecialization)
{
}
};
} // end namespace irgen
} // end namespace swift
#endif
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