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//===--- TypeCheckUnasfe.h - Strict Safety Diagnostics ----------*- 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
//
//===----------------------------------------------------------------------===//
#ifndef SWIFT_SEMA_TYPE_CHECK_UNSAFE_H
#define SWIFT_SEMA_TYPE_CHECK_UNSAFE_H
#include "swift/AST/UnsafeUse.h"
namespace llvm {
template <typename Fn> class function_ref;
}
namespace swift {
class Witness;
/// Diagnose the given unsafe use right now.
void diagnoseUnsafeUse(const UnsafeUse &use);
/// Enumerate all of the unsafe uses that occur within this declaration
///
/// The given `fn` will be called with each unsafe use. If it returns `true`
/// for any use, this function will return `true` immediately. Otherwise,
/// it will return `false` once all unsafe uses have been emitted.
bool enumerateUnsafeUses(ConcreteDeclRef declRef,
SourceLoc loc,
bool isCall,
bool skipTypeCheck,
llvm::function_ref<bool(UnsafeUse)> fn);
/// Enumerate all of the unsafe uses that occur within this array of protocol
/// conformances.
///
/// The given `fn` will be called with each unsafe use. If it returns `true`
/// for any use, this function will return `true` immediately. Otherwise,
/// it will return `false` once all unsafe uses have been emitted.
bool enumerateUnsafeUses(ArrayRef<ProtocolConformanceRef> conformances,
SourceLoc loc,
llvm::function_ref<bool(UnsafeUse)> fn);
/// Enumerate all of the unsafe uses that occur within this substitution map.
///
/// The given `fn` will be called with each unsafe use. If it returns `true`
/// for any use, this function will return `true` immediately. Otherwise,
/// it will return `false` once all unsafe uses have been emitted.
bool enumerateUnsafeUses(SubstitutionMap subs,
SourceLoc loc,
llvm::function_ref<bool(UnsafeUse)> fn);
/// Determine whether a reference to this declaration is considered unsafe,
/// either explicitly (@unsafe) or because it references an unsafe type.
bool isUnsafe(ConcreteDeclRef declRef);
/// Whether the given requirement should be considered unsafe for the given
/// conformance.
bool isUnsafeInConformance(const ValueDecl *requirement,
const Witness &witness,
NormalProtocolConformance *conformance);
/// If the given type involves an unsafe type, diagnose it by calling the
/// diagnose function with the most specific unsafe type that can be provided.
void diagnoseUnsafeType(ASTContext &ctx, SourceLoc loc, Type type,
llvm::function_ref<void(Type)> diagnose);
/// Check for unsafe storage within this nominal type declaration.
void checkUnsafeStorage(NominalTypeDecl *nominal);
}
#endif // SWIFT_SEMA_TYPE_CHECK_UNSAFE_H
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