| 1 | //===- DynamicTypeInfo.h - Runtime type information -------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #ifndef LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_DYNAMICTYPEINFO_H |
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| 10 | #define LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_DYNAMICTYPEINFO_H |
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| 11 | |
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| 12 | #include "clang/AST/Type.h" |
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| 13 | |
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| 14 | namespace clang { |
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| 15 | namespace ento { |
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| 16 | |
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| 17 | /// Stores the currently inferred strictest bound on the runtime type |
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| 18 | /// of a region in a given state along the analysis path. |
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| 19 | class DynamicTypeInfo { |
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| 20 | public: |
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| 21 | DynamicTypeInfo() {} |
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| 22 | |
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| 23 | DynamicTypeInfo(QualType Ty, bool CanBeSub = true) |
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| 24 | : DynTy(Ty), CanBeASubClass(CanBeSub) {} |
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| 25 | |
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| 26 | /// Returns false if the type information is precise (the type 'DynTy' is |
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| 27 | /// the only type in the lattice), true otherwise. |
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| 28 | bool canBeASubClass() const { return CanBeASubClass; } |
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| 29 | |
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| 30 | /// Returns true if the dynamic type info is available. |
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| 31 | bool isValid() const { return !DynTy.isNull(); } |
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| 32 | |
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| 33 | /// Returns the currently inferred upper bound on the runtime type. |
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| 34 | QualType getType() const { return DynTy; } |
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| 35 | |
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| 36 | operator bool() const { return isValid(); } |
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| 37 | |
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| 38 | bool operator==(const DynamicTypeInfo &RHS) const { |
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| 39 | return DynTy == RHS.DynTy && CanBeASubClass == RHS.CanBeASubClass; |
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| 40 | } |
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| 41 | |
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| 42 | void Profile(llvm::FoldingSetNodeID &ID) const { |
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| 43 | ID.Add(DynTy); |
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| 44 | ID.AddBoolean(B: CanBeASubClass); |
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| 45 | } |
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| 46 | |
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| 47 | private: |
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| 48 | QualType DynTy; |
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| 49 | bool CanBeASubClass; |
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| 50 | }; |
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| 51 | |
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| 52 | } // namespace ento |
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| 53 | } // namespace clang |
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| 54 | |
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| 55 | #endif // LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_DYNAMICTYPEINFO_H |
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| 56 | |
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