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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //== SimpleConstraintManager.h ----------------------------------*- C++ -*--==// |
| 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 | // Simplified constraint manager backend. |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |||
| 13 | #ifndef LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_SIMPLECONSTRAINTMANAGER_H |
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| 14 | #define LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_SIMPLECONSTRAINTMANAGER_H |
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| 15 | |||
| 16 | #include "clang/StaticAnalyzer/Core/PathSensitive/ConstraintManager.h" |
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| 17 | #include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h" |
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| 18 | |||
| 19 | namespace clang { |
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| 20 | |||
| 21 | namespace ento { |
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| 22 | |||
| 23 | class SimpleConstraintManager : public ConstraintManager { |
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| 24 | ExprEngine *EE; |
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| 25 | SValBuilder &SVB; |
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| 26 | |||
| 27 | public: |
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| 28 | SimpleConstraintManager(ExprEngine *exprengine, SValBuilder &SB) |
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| 29 | : EE(exprengine), SVB(SB) {} |
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| 30 | |||
| 31 | ~SimpleConstraintManager() override; |
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| 32 | |||
| 33 | //===------------------------------------------------------------------===// |
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| 34 | // Implementation for interface from ConstraintManager. |
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| 35 | //===------------------------------------------------------------------===// |
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| 36 | |||
| 37 | protected: |
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| 38 | //===------------------------------------------------------------------===// |
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| 39 | // Interface that subclasses must implement. |
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| 40 | //===------------------------------------------------------------------===// |
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| 41 | |||
| 42 | /// Given a symbolic expression that can be reasoned about, assume that it is |
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| 43 | /// true/false and generate the new program state. |
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| 44 | virtual ProgramStateRef assumeSym(ProgramStateRef State, SymbolRef Sym, |
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| 45 | bool Assumption) = 0; |
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| 46 | |||
| 47 | /// Given a symbolic expression within the range [From, To], assume that it is |
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| 48 | /// true/false and generate the new program state. |
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| 49 | /// This function is used to handle case ranges produced by a language |
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| 50 | /// extension for switch case statements. |
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| 51 | virtual ProgramStateRef assumeSymInclusiveRange(ProgramStateRef State, |
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| 52 | SymbolRef Sym, |
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| 53 | const llvm::APSInt &From, |
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| 54 | const llvm::APSInt &To, |
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| 55 | bool InRange) = 0; |
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| 56 | |||
| 57 | /// Given a symbolic expression that cannot be reasoned about, assume that |
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| 58 | /// it is zero/nonzero and add it directly to the solver state. |
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| 59 | virtual ProgramStateRef assumeSymUnsupported(ProgramStateRef State, |
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| 60 | SymbolRef Sym, |
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| 61 | bool Assumption) = 0; |
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| 62 | |||
| 63 | //===------------------------------------------------------------------===// |
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| 64 | // Internal implementation. |
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| 65 | //===------------------------------------------------------------------===// |
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| 66 | |||
| 67 | /// Ensures that the DefinedSVal conditional is expressed as a NonLoc by |
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| 68 | /// creating boolean casts to handle Loc's. |
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| 69 | ProgramStateRef assumeInternal(ProgramStateRef State, DefinedSVal Cond, |
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| 70 | bool Assumption) override; |
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| 71 | |||
| 72 | ProgramStateRef assumeInclusiveRangeInternal(ProgramStateRef State, |
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| 73 | NonLoc Value, |
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| 74 | const llvm::APSInt &From, |
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| 75 | const llvm::APSInt &To, |
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| 76 | bool InRange) override; |
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| 77 | |||
| 78 | SValBuilder &getSValBuilder() const { return SVB; } |
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| 79 | BasicValueFactory &getBasicVals() const { return SVB.getBasicValueFactory(); } |
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| 80 | SymbolManager &getSymbolManager() const { return SVB.getSymbolManager(); } |
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| 81 | |||
| 82 | private: |
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| 83 | ProgramStateRef assume(ProgramStateRef State, NonLoc Cond, bool Assumption); |
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| 84 | |||
| 85 | ProgramStateRef assumeAux(ProgramStateRef State, NonLoc Cond, |
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| 86 | bool Assumption); |
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| 87 | }; |
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| 88 | |||
| 89 | } // end namespace ento |
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| 90 | |||
| 91 | } // end namespace clang |
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| 92 | |||
| 93 | #endif |