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//== DynamicTypeInfo.h - Runtime type information ----------------*- C++ -*--=//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_DYNAMICTYPEINFO_H
#define LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_DYNAMICTYPEINFO_H
#include "clang/AST/Type.h"
namespace clang {
namespace ento {
/// Stores the currently inferred strictest bound on the runtime type
/// of a region in a given state along the analysis path.
class DynamicTypeInfo {
private:
QualType T;
bool CanBeASubClass;
public:
DynamicTypeInfo() : T(QualType()) {}
DynamicTypeInfo(QualType WithType, bool CanBeSub = true)
: T(WithType), CanBeASubClass(CanBeSub) {}
/// Return false if no dynamic type info is available.
bool isValid() const { return !T.isNull(); }
/// Returns the currently inferred upper bound on the runtime type.
QualType getType() const { return T; }
/// Returns false if the type information is precise (the type T is
/// the only type in the lattice), true otherwise.
bool canBeASubClass() const { return CanBeASubClass; }
void Profile(llvm::FoldingSetNodeID &ID) const {
ID.Add(T);
ID.AddInteger((unsigned)CanBeASubClass);
}
bool operator==(const DynamicTypeInfo &X) const {
return T == X.T && CanBeASubClass == X.CanBeASubClass;
}
};
} // end ento
} // end clang
#endif
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